KR100680305B1 - Control device and method for cooling system using Ondol and cooling apparatus - Google Patents

Abstract

According to the present invention, a control method of a heating and cooling system using an ondol and an air system includes: a heat source unit for supplying hot water or cold water; A radiation panel unit embedded in a floor of the living room and including a bottom pipe through which hot or cold water supplied from the heat source part passes and a heat storage layer covering the floor pipe; A method of controlling an air conditioning system including an air system for supplying air in a living room, the method comprising: (a) acquiring an indoor temperature measurement of the living room, and storing an indoor temperature set value and an indoor temperature control deviation; (b) when the indoor temperature measurement value is greater than the indoor temperature set value plus the indoor temperature control deviation, the operating state of the air system is cooled, and when the indoor temperature measurement value is smaller than the indoor temperature set value, the air system Determining an operating state of the vehicle as a stationary state; And (c) comparing the current operation state of the air system with the result determined in step (b) to maintain or change the operation state of the air system, thereby providing sub-cooling and By applying pre-cooling control method, time lag problem can be solved, condensation can be controlled, and residents can be comfortable and operate the system efficiently.

Air conditioning system, Ondol, Air system, Dehumidification, Auxiliary cooling, Pre-cooling

Description

Control device and method for controlling heating and cooling system using ondol and air system {Control device and method for cooling system using Ondol and cooling apparatus}

1 is a conceptual diagram showing the configuration of a heating and cooling system using a combination of an ondol and an air system according to an embodiment of the present invention.

Figure 2 is a block diagram showing the configuration of the distribution unit of the heating and cooling system using the ondol and the air system according to an embodiment of the present invention.

Figure 3 is a conceptual diagram showing the configuration of a heating and cooling system using a combined ondol and air system according to another embodiment of the present invention.

4 is a cross-sectional view showing a living room and a balcony installed with a heating and cooling system using an ondol and an air system according to another preferred embodiment of the present invention.

Figure 5 is a graph showing the effect of applying the air system as auxiliary cooling through the experiment of the control method of the heating and cooling system using the ondol and the air system according to a preferred embodiment of the present invention.

6A is a graph illustrating a control method concept for applying an air system as auxiliary cooling in a control method of a heating and cooling system using an ondol and an air system according to a preferred embodiment of the present invention.

6b is a graph illustrating a control method concept for applying an air system as auxiliary heating in a control method of a cold heating system using an ondol and an air system according to a preferred embodiment of the present invention;

7A, 7B, and 7C are flowcharts illustrating a control method for applying an air system as auxiliary cooling in a method of controlling a heating and cooling system using an ondol and an air system according to a preferred embodiment of the present invention.

Figure 8a is a graph showing a control method concept for applying the initial cooling reservation operation of the control method of the heating and cooling system using both the ondol and the air system according to a preferred embodiment of the present invention.

8b is a graph illustrating a control method concept for applying an initial heating reservation operation to a control method of a heating and cooling system using an ondol and an air system according to a preferred embodiment of the present invention.

Figure 9 is a flow chart showing a control method for applying the initial cooling reservation operation of the cooling method of the heating and cooling system using the ondol and the air system in accordance with a preferred embodiment of the present invention.

10 is a schematic diagram of a floor structure according to the configuration of the control variable for the prediction of the floor surface temperature in the configuration of the control method of the heating and heating system using the ondol and the air system in accordance with a preferred embodiment of the present invention.

11 is a perspective view showing a control device to which a control method of a heating and cooling system using an ondol and an air system according to a preferred embodiment of the present invention is applied.

<Description of the symbols for the main parts of the drawings>

100: heat source portion 200: distribution portion

300: radiation panel 400: air system

500: control unit 510: measuring unit

520: operation unit 530: operation unit

541: main power switch 542: air conditioning switch

543: auxiliary cooling operation switch 544: indoor environment display

545: operation state control unit 546: reservation time control unit

The present invention relates to a control method, and more particularly, to a control method of a cooling and heating system using an ondol and an air system.

In general, there are three types of radiation cooling systems using water as a refrigerant. First, in the case of using a cooling panel, second, in the case of using a cooling grid, third, based on the principle of floor heating (ondol) is a case of embedding a tube of cold water flowing inside the floor structure.

The cooling panel attaches a metal cold water pipe to an aluminum panel to cool an indoor space by using a copy plate under the panel. Cooling grid is a method of embedding cold gypsum boards without dangling panels and embedding them on gypsum board or by attaching them to the ceiling. Currently, the most commonly used method in Europe is to attach a cooling panel to the ceiling. In this case, the factor limiting the cooling capacity of the cooling system is the discomfort caused by the dew condensation and the unevenness of the vertical temperature distribution. In general, the radiant cooling can reduce the discomfort caused by the draft (draft) compared to the electric air system, but in the case of the ceiling panel method of the radiant cooling method, if the cooling load is more than 100W / ㎡ there is a risk of draft generation.

In the case of embedding a cold water pipe inside the floor structure, it is called Radiant Floor Cooling, and Cooling Floor, Surface Cooling, and the like also refer to this method. In Europe, as more buildings radiate floor radiant heating in recent decades, interest in floor radiant cooling has increased. The biggest problem with this technique is that there is a risk of condensation on the floor. And the floor surface temperature should be controlled within the comfort range of the occupants, so it should not be lowered below the preferred floor surface temperature according to the characteristics of the occupants.

Therefore, in order to apply the floor-ondol structure of existing residential buildings to cooling, the construction of a cooling system considering dehumidification and a control method for operating the same are required. To this end, control of the set room temperature, as well as condensation of the floor surface should be prevented, and the cooling capacity of the floor radiation cooling should be compensated for by the comfort of the floor surface temperature.

When the floor radiation cooling method is applied in Korea, it has the following advantages as well as the general advantages of the radiation cooling method. First, Korean homes have a floor radiant heating method, which means that most existing heating facilities are ondol, so it would be very advantageous from an economic point of view if floor radiant cooling is applicable. In other words, the initial investment and maintenance cost for the cooling equipment is reduced.

Second, it enables power demand management. Power demand management (DSM) affects the power usage patterns of consumers in the power use, inducing the form of load in the desired direction, delaying the investment in power supply facilities by reducing or leveling the predicted power demand. To reduce the cost of power supply by improving the utilization and efficiency of the installation.

In terms of the primary system, when using a local cooling source or a gas absorption cooling heat source to obtain a heat source, it may bring a peak clipping effect. In terms of the secondary system, unlike conventional convection cooling, radiant cooling that uses the heat storage effect of building structures requires continuous operation due to the characteristics of the system, which distributes the load over the entire operating time. It can have the effect of Load Shifting.

Third, it is superior to convective cooling in terms of comfort, and less uncomfortable risk due to vertical temperature difference than the ceiling panel method. However, due to time lag due to the heat storage effect of concrete, it will be difficult to control the immediate response to changes in the cooling load of the room. Therefore, when selecting the control method, it is necessary to consider the time lag characteristic of the structure.

The control of the existing floor radiation cooling system is made to prevent condensation and to maintain the set room temperature, and thus, there is a problem due to the time lag in the cooling operation in an intermittently operated residential building. In foreign countries, convection-based air conditioning equipment is applied in parallel with floor radiation cooling, and the floor humidity is kept constant so that condensation does not occur.

As a related art of the control method for preventing condensation of floor radiation cooling, Korean Patent Publication No. 10-0403237 ('radiation cooling system using a floor ondol structure and operation control method for preventing condensation of the radiation cooling system') Can be mentioned. In the present invention, the dew point temperature of the room air is maintained below the floor surface temperature by operating a ventilation fan or a package air conditioner to prevent condensation of the floor radiation cooling. Not included.

On the other hand, as a technique for supplementing the reaction time delay characteristics of the floor radiant heating using the existing ondol there is an application example to supplement the reaction time by using the auxiliary heating system and the reservation operation method.

1) The prior art of the method using the auxiliary heating device is the Republic of Korea Patent Publication No. 10-0378743 ('Ondol floor structure of a multi-family house equipped with auxiliary heating device'). In the case of the present invention, in order to complement the conventional heating method using hot water, the electric heating part is buried to enable partial heating, but it does not fundamentally compensate for the heat transfer reaction time through the floor structure. There is no solution for fast control within range. In addition, since the electric ondol is applicable only to heating, it cannot be a method for fundamentally solving the reaction time delay characteristics in operating the cooling system using the ondol.

2) The prior art supplementing the reaction time through the reservation operation method is the Republic of Korea Patent Publication No. 10-0072672 ('How to set the heating reservation time of the gas boiler room cone'), Republic of Korea Patent Publication No. 10-0058595 (' Reserved operation method of the air conditioner '), Republic of Korea Patent Publication No. 10-0011645 (' Reserved operation method of the fan heater ').

Republic of Korea Patent Publication No. 10-0072672 ('Method for setting the heating reservation time of the gas boiler room cone') relates to the method of setting the heating reservation time in the gas boiler room cone, the conventional heating reservation time every 10 to 15 minutes Although the method of setting the heating reservation time of the gas boiler room cone with a key input function is faster than that of the gas boiler room cone, it does not reflect the fundamental characteristics related to the time delay of floor radiant heating. It is difficult to apply to the control method and there is a problem that a separate reserved operation control method is not derived.

Republic of Korea Patent Publication No. 10-0058595 ('Reserved operation method of the air conditioner') relates to the reservation operation method of the air conditioner, an air conditioner that can be scheduled for weekly and monthly units depending on the characteristics of the day Although the reservation operation method is proposed, it is difficult to apply it to the control method of the cooling system using the ondol because there is no consideration of the operation reservation time associated with the delay of the reaction time.

Republic of Korea Patent Publication No. 10-0011645 ('Reserved operation method of the fan heater') relates to the reservation operation method of the fan heater, the user sets the operating time and heating temperature of the fan heater to set the room temperature and the reserved heating temperature Although a control method is proposed as a standard, the control is based only on the occupancy time of the occupants, and thus does not reflect the fundamental characteristics related to the time lag of floor radiant heating. When the operation is started based on the reserved room time during the reservation operation in the floor radiation cooling using the ondol, the reaction time of the radiation panel unit 300 due to the supply of cold and hot water may be late, causing inconvenience to the occupants. Therefore, it is necessary to determine reservation operation time and derive operation control plan before real time.

The present invention has been made to solve the above problems, the object of the present invention is to solve the problem according to the time lag of the floor radiation cooling (cooling), to control the occurrence of condensation during cooling, In order to make the system operate efficiently, it is to provide the control method of the heating and cooling system using the ondol and the air system together.

In other words, by using an air-cooled freezer in parallel with an existing boiler, or by using a cold water-cooled water heater using gas, it reduces the use of electricity during the summer, applies the floor ondol structure used for the existing heating to cooling, and prevents condensation. In addition to applying the same air system, it is to provide a concrete control method for applying it to sub-cooling and pre-cooling.

According to a preferred aspect of the present invention to achieve the above technical problem, a heat source for supplying hot or cold water; A radiation panel unit embedded in a floor of the living room and including a bottom pipe through which hot or cold water supplied from the heat source part passes and a heat storage layer covering the floor pipe; A method of controlling an air conditioning system including an air system for supplying air in a living room, the method comprising: (a) acquiring an indoor temperature measurement of the living room, and storing an indoor temperature set value and an indoor temperature control deviation; (b) when the indoor temperature measurement value is greater than the indoor temperature set value plus the indoor temperature control deviation, the operating state of the air system is cooled, and when the indoor temperature measurement value is smaller than the indoor temperature set value, the air system Determining an operating state of the vehicle as a stationary state; And (c) comparing the current operation state of the air system with the result determined in step (b) to maintain or change the operation state of the air system. A control method of is provided.

In the step (b), if the indoor temperature measurement value is greater than or equal to the indoor temperature set value and less than or equal to the indoor temperature set value plus the indoor temperature control deviation, determining to maintain the operation state of the air system. It is preferable to further include.

In addition, the heat source unit for supplying hot or cold water; A radiation panel unit embedded in a floor of the living room and including a bottom pipe through which hot or cold water supplied from the heat source part passes and a heat storage layer covering the floor pipe; A method of controlling an air conditioning system including an air system for supplying air in a living room, the method comprising: (a) acquiring indoor temperature measurement, indoor humidity measurement, and floor surface temperature measurement of the living room, and controlling the indoor temperature set value and the indoor temperature control. Storing a dew point, a safety factor, a dew point temperature calculated from the indoor temperature measurement and the indoor humidity measurement; (b) cooling the operating state of the air system when the room temperature measurement is greater than the room temperature set value plus the room temperature control deviation or when the floor surface temperature measurement is less than the dew point temperature plus the safety factor. Determining the operating state of the air system when the indoor temperature measurement value is less than or equal to the indoor temperature set value and the floor surface temperature measurement value is greater than the dew point temperature plus two times the safety factor. ; And (c) comparing the current operating state of the air system with the result determined in step (b) to maintain or change the operating state of the air system. A control method is provided.

In the step (b), if the indoor temperature measurement value is greater than the indoor temperature setting value and less than or equal to the room temperature control value plus the room temperature control deviation, or the floor surface temperature measurement value provides the safety factor at the dew point temperature. It is preferable to further include the step of determining to maintain the operating state of the air system if greater than or equal to the added value and less than or equal to the dew point temperature plus 2 times the safety factor.

In any one of the steps (a) to (c), (d) the indoor temperature measurement value is greater than the indoor temperature set value multiplied by the indoor temperature control deviation multiplied by a weight selected between 0 and 1. When the cold water is supplied to the radiation panel unit, the cold water is not supplied to the radiation panel unit when the indoor temperature measurement value is smaller than the room temperature setting value minus the value obtained by multiplying the indoor temperature control deviation by the weight. Determining that it is not in a state; And (e) maintaining or changing the state of supplying cold water to the radiation panel unit by comparing the current operation state of the radiation panel unit with the result determined in step (d).

In the step (d), the indoor temperature measurement value is greater than or equal to the room temperature control value minus the product of the indoor temperature control deviation multiplied by the weight, and the room temperature control value is multiplied by the indoor temperature control deviation by the weight value. It is preferable to further include the step of determining to maintain the state of supplying the cold water to the radiation panel unit if less than or equal to the value.

Any one of the steps (a) to (c) may include: (d) storing a floor surface temperature set value and a floor surface temperature control deviation of the living room; (e) When the bottom surface temperature measurement value is greater than the bottom surface temperature setting value plus the bottom surface temperature control deviation, cold water is supplied to the radiation panel unit, and the bottom surface temperature measurement value is the bottom surface temperature setting value. Determining that the cold water is not supplied to the radiation panel unit if smaller; And (f) maintaining or changing the state of supplying cold water to the radiation panel unit by comparing the current operation state of the radiation panel unit with the result determined in step (e).

In the step (e), when the bottom surface temperature measurement value is greater than or equal to the bottom surface temperature set value and is less than or equal to the bottom surface temperature set value plus the bottom surface temperature control deviation, cold water is supplied to the radiation panel unit. It is preferable to further include the step of determining to maintain the state.

In any one of the steps (a) to (c), (d) the operating state of the air system may be stopped when the indoor temperature measurement value is greater than the indoor temperature set value plus the indoor temperature control deviation. And when the room temperature measurement value is less than the room temperature control value minus the room temperature control deviation, the operating state of the air system is heated, and the room temperature measurement value is the room temperature control value minus the room temperature control deviation. Determining to maintain an operating state of the air system when greater than or equal to a value and less than or equal to the indoor temperature set value plus the indoor temperature control deviation; And (e) comparing the current operation state of the air system with the result determined in step (d) to maintain or change the operation state of the air system.

In any one of the steps (a) to (c), (d) the indoor temperature measurement value is greater than the indoor temperature set value multiplied by the indoor temperature control deviation multiplied by a weight selected between 0 and 1. When the hot water is not supplied to the radiating panel unit, the hot water is supplied to the radiating panel unit when the room temperature measurement value is less than the value obtained by subtracting the value obtained by multiplying the indoor temperature control deviation by the weight. In the state, the room temperature measured value is greater than or equal to the room temperature set value minus the value obtained by multiplying the room temperature control deviation by the weight, and the room temperature set value is obtained by adding the room temperature control deviation multiplied by the weight. Determining to maintain a state in which hot water is supplied to the radiation panel unit if smaller than or equal to; And (e) maintaining or changing the state of supplying hot water to the radiation panel unit by comparing the current operation state of the radiation panel unit with the result determined in step (d).

In addition, the heat source unit for supplying hot or cold water; A radiation panel unit embedded in a floor of the living room and including a bottom pipe through which hot or cold water supplied from the heat source part passes and a heat storage layer covering the floor pipe; An apparatus for controlling a cooling and heating system including an air system for supplying air in a living room, comprising: a measuring unit for acquiring a room temperature measurement, an indoor humidity measurement, and a floor surface temperature measurement of the living room; A storage unit for storing a dew point temperature calculated from an indoor temperature set value, an indoor temperature control deviation, a safety factor, the indoor temperature measurement value and the indoor humidity measurement value; If the indoor temperature measurement value is greater than the room temperature set value plus the room temperature control deviation, or the floor surface temperature measurement value is smaller than the dew point temperature plus the safety factor, the operating state of the air system is cooled. A calculation unit for determining an operating state of the air system as a stop state when the indoor temperature measurement value is less than or equal to the indoor temperature setting value and the floor surface temperature measurement value is greater than the dew point temperature plus a multiple of the safety factor; A control apparatus for an air conditioning and heating system using an ondol and an air system including an operation unit for maintaining or changing an operation state of the air system by comparing a current operation state of the air system with a result determined by the calculating unit.

In addition, the heat source unit for supplying cold water; A radiation panel unit embedded in a floor of the living room and including a bottom pipe through which cold water supplied from the heat source part passes and a floor structure covering the floor pipe; A method of controlling an air conditioning system including an air system for supplying air in a living room, the method comprising: (a) acquiring the cold water temperature measurement, the indoor temperature measurement of the living room, and the floor surface temperature measurement; Storing heat transfer coefficients between the indoor air in the living room, the heat transfer coefficients between the floor structure and the cold water, and the heat capacity of the floor structure; (b) calculating a reservation driving time that satisfies the following equation as a time taken for changing the floor surface temperature of the living room; And

, T_{F_limit}는 상기 바닥표면온도 한계치,

,

, U_D 는 상기 바닥표면과 상기 거실의 실내공기 간의 열전달 계수, U_S 는 상기 바닥구조체와 상기 냉수 간의 열전달계수, C_F는 상기 열용량, T_W 는 상기 냉수온도 측정치, T_R은 상기 실내온도 측정치, T_F-initial 는 상기 바닥표면온도 측정치임 -- here,

, T _{F_limit} is the floor surface temperature limit,

,

, U _D is the heat transfer coefficient between the floor surface and the indoor air of the living room, U _S is the heat transfer coefficient between the floor structure and the cold water, C _F is the heat capacity, T _W is the cold water temperature measurement, T _R is the room temperature Measured value, T _F-initial is the bottom surface temperature measurement-

(c) A control method of an air conditioning and heating system using an ondol and an air system including supplying the cold water to the radiation panel unit in advance by the calculated reservation operation time is provided.

Preferably, the floor surface temperature limit value is a larger value of a floor surface temperature set value of the living room, a value obtained by adding a safety factor to a dew point temperature calculated from the indoor temperature measurement and the indoor humidity measurement of the living room.

In addition, the heat source unit for supplying cold water; A radiation panel unit embedded in a floor of the living room and including a bottom pipe through which cold water supplied from the heat source part passes and a floor structure covering the floor pipe; An apparatus for controlling a cooling and heating system including an air system for supplying air in a living room, the apparatus comprising: a measuring unit obtaining the cold water temperature measurement value, the indoor temperature measurement value of the living room, an indoor humidity measurement value, and a floor surface temperature measurement value; Calculated from the floor surface temperature set value of the living room, the heat transfer coefficient between the floor surface and the indoor air of the living room, the heat transfer coefficient between the floor structure and the cold water, the heat capacity of the floor structure, the safety factor, the room temperature measurement and the room humidity measurement A storage unit for storing the dew point temperature; A calculation unit for calculating a reservation driving time satisfying the following equation as a time required for the floor surface temperature of the living room to change;

, T_{F_limit}=Max(T_Fset, T_D+SF),

,

, U_D 는 상기 바닥표면과 상기 거실의 실내공기 간의 열전달 계수, U_S 는 상기 바닥구조체와 상기 냉수 간의 열전달계수, C_F는 상기 열용량, T_Fset은 상기 바닥표면온도 설정치, T_D는 상기 노점온도, SF는 상기 안전율, T_W 는 상기 냉수온도 측정치, T_R은 상기 실내온도 측정치, T_F-initial 는 상기 바닥표면온도 측정치임 -- here,

, T _{F_limit} = Max (T _Fset , T _D + SF),

,

, U _D is the heat transfer coefficient between the floor surface and the indoor air of the living room, U _S is the heat transfer coefficient between the floor structure and the cold water, C _F is the heat capacity, T _Fset is the floor surface temperature set value, T _D is the dew point Temperature, SF is the safety factor, T _W is the cold water temperature measurement, T _R is the room temperature measurement, T _F-initial is the floor surface temperature measurement-

A control apparatus for an air conditioning and heating system using an ondol and an air system including an operation unit for supplying the cold water to the radiation panel unit in advance for the calculated reservation operation time is provided.

In addition, the present invention is a heat source that can be configured separately from the heating source of the existing residential building, such as a local cooling source or gas-absorbing cold water heater, or applied simultaneously to cooling and heating in order to apply floor ondol structure and various devices used for existing heating to cooling The unit 100 and the cold and hot water supplied from the heat source unit 100 are radiated to the radiation panel unit 300 such as the floor radiant cooling and heating system of each room in the household, and the air system 400 such as the auxiliary cooling device and the window system for the ventilation bottle. Radiation for removing the load of each chamber in the household by receiving cold and hot water from the distribution unit 200 and the distribution unit 200 including a pipe, a pump, a heat exchanger, a three-way valve, an open / close valve and a hot / cold water distributor for delivery. The panel unit 300 is operated in parallel with the floor radiant heating during heating and is operated by dehumidification and auxiliary cooling during cooling to maintain room temperature and to prevent condensation on the floor surface. In order to control the operation of the stem 400, the radiation panel 300, and the air system 400, a measurement unit 510 and a measurement unit for measuring room temperature, indoor humidity, floor surface temperature, outdoor air temperature, and supply cold water temperature. Calculation unit 520 for calculating the state value of the device to be operated according to the control method considering the maintenance of room temperature, floor condensation, and comfort through the value input at 510, the state value of the actual device of the operation unit 520 It characterized in that it comprises a control unit 500 consisting of an operation unit 530 for operating the device according to.

In addition, to solve the problems of room temperature and floor surface temperature control according to the reaction time delay of the structure during floor radiation cooling operation, to control the occurrence of dew condensation during the cooling, 1) the specific cooling of the system for the comfortable operation of the residents and efficient operation of the system Control method, characterized in that it comprises a specific control method of 2) reservation cooling for operating the system before re-real time in advance.

1) The specific algorithm of the auxiliary cooling is included in the calculation unit 520 of the control unit 500, and (a) room temperature, room humidity and floor surface temperature, outside air temperature, supply water temperature, setting room temperature, setting of each room in the household. An input step of receiving and storing the floor temperature; (b) a state setting step for determining heating and cooling modes of each room; (c) In the case of the cooling mode in the step (b), (c-1-1) the first-first operation step for calculating the dew point temperature, the set dew point temperature, the dew point temperature error of each room, (c-1- 2) Step 1-2 for determining the possibility of dew condensation according to the dew point temperature error value of each room, (c-1-3) Auxiliary cooling operation for each room according to room temperature, set room temperature and room temperature control deviation of each room Step 1-3 for determining whether or not (c-1-4) Step 1-4 for determining whether cooling is required for each room according to the room temperature, set room temperature, and room temperature control deviation of each room, (c- 1-5) Step 1-5 to determine whether the floor surface temperature is unpleasant according to the floor surface temperature, set floor temperature, and floor temperature control deviation of each room, (c-1-6) Supply cold water in household In the cooling mode calculation step including the first to sixth operation steps for determining the temperature, and in the heating mode in step (b), (c-2-1) according to the room temperature, set room temperature, and room temperature control deviation of each room.Step 2-1 for determining whether or not auxiliary heating is performed by each operation; (c-2-2) Step 2-2 for determining whether heating is required for each room based on the room temperature, set room temperature, and room temperature control deviation of each room. , (c-2-3) a heating mode calculation step including a 2-3 operation step of determining an in-house supply hot water temperature; (d) In the cooling mode in the step (b), the operation of the air system is determined according to the possibility of dew condensation and the auxiliary cooling operation of each chamber, and the necessity of cooling the chamber and whether the floor surface temperature is uncomfortable. Data synthesis step comprising determining whether the floor radiation cooling operation according to; (e) Provided is a control method of a cooling and heating system including an output step for exporting the operation of the air system and whether or not the floor radiation cooling operation to the control unit 530 of the control unit 500.

2) the specific algorithm of the reservation cooling is included in the calculation unit 520 of the control unit 500, (a) an input step of receiving and storing the current time and the room reservation time of each room in the household; (b) determining whether the pre-cooling time of each room is set to (b-1-1) a predetermined time or (b-1-2) automatically calculated time; and A state determination step including determining (b-2-1) heating mode and (b-2-2) cooling mode of each room; (c) In the case of (b), in the step (b-1-1), when the reservation operation is performed at a predetermined time, the system operation time is determined by subtracting the predetermined time from the reservation time in the room in the heating mode and the cooling mode. In the operation 1-1, when the reservation operation is performed with the time calculated automatically in (b-1-2) in the step (b), (b-2-1) the floor surface temperature set by the occupant in the heating mode. 1-2-1 operation step of estimating the time it takes for the current floor surface temperature to reach this value by subtracting the estimated time from the room reservation time, as the system operation time, (b-2- 2) In the cooling mode, the first step 2-2-operation step of comparing the setting value of the floor surface temperature by the occupant with the current dew point temperature to determine the larger value as the floor surface temperature limit value, and the current floor surface temperature is the floor. Predict the time it takes to reach the surface temperature limit, Step 1-2-3, which calculates the system operation time by subtracting the estimated time from the actual reservation time, and determines whether the current time has passed the system operation time. 1-2-4 operation step of making true and if the current time has not passed the system operation time, making the floor copy cooling operation according to the reservation operation. A 1-2-5 operation step comprising the step; (d) Provided is a control method of a cooling and heating system including an output step for exporting floor radiant heating and heating operation to the operation unit 530 of the control unit 500.

Hereinafter, with reference to the accompanying drawings will be described in more detail with respect to a preferred embodiment of the heating and cooling system control method using the ondol and the air system according to the present invention.

1 is a conceptual diagram showing the configuration of a heating and cooling system using a combination of an ondol and an air system according to an embodiment of the present invention. Referring to FIG. 1, a heat source unit 100 configurable separately from a heating source of an existing residential building, such as an area cooling source or a gas absorption cold or hot water heater, or simultaneously applicable to cooling and heating, and cold / hot water supplied from the heat source unit 100 may be used in a household. Distribution unit 200, distribution unit 200, including a pipe, a pump, a heat exchanger, a three-way valve, an open / close valve, a hot / cold water distributor for delivering to the radiation panel unit 300 and the air system 400 of each chamber. Radiation panel unit 300 to remove the load of each room in the household receiving cold and hot water from the house, and operated in parallel with the floor radiant heating during heating, and operated in parallel with dehumidification and auxiliary cooling during cooling to maintain room temperature and floor surface. Measurement to measure room temperature, indoor humidity, floor surface temperature, outside air temperature and supply water temperature to control the operation of the air system 400, the radiation panel unit 300 and the air system 400 applied to prevent condensation 510, arithmetic unit 520, arithmetic unit 520 for calculating the state values of the devices to be operated according to the control method considering the maintenance of room temperature, prevention of condensation of the floor surface, and comfort through the values input from the measuring unit 510 A control unit 500 is shown which comprises an operation unit 530 for manipulating the device according to the actual state of the device. The present invention is applied to the existing floor ondol structure installed in each room in the residential building in the cooling, heating and heating by supplying hot water during the heating operation to the combined air system 400 to prevent condensation of the floor surface during the cooling operation Integrated operation is possible.

Figure 2 is a block diagram showing the configuration of the distribution unit of the heating and cooling system using the ondol and the air system according to an embodiment of the present invention. In order to send the cold and hot water supplied from the heat source unit 100 to 1) the radiation panel unit 300 and 2) the air system 400, 1) by using the three-way valve 220 of the cold and hot water passing through the heat exchanger 210 By adjusting the flow rate (203), by re-adjusting the temperature of the hot and cold water supplied to the radiation panel unit 300 (204) by passing through the cold / hot water distributor 240 using the circulation pump 230 for the bottom radiation panel radiation panel unit ( A portion 201 for supplying 300;

2) Without directly controlling the temperature of the hot water or cold water supplied from the heat source unit 100 and directly supplied to the air system 400 using a circulation pump 110 that is built in or installed separately from the heat source unit, the air system 400 In the case of not operating), the hot and cold water is recycled to the heat source, and the flow control valve 260 is installed to be divided into portions 202 for maintaining the design flow rate on the heat source part 100 at all times.

When the gas absorption type cold water heater is applied to the heat source unit 100, 60- or about hot water is supplied during heating, and when the external air compensation control is applied thereto, the heat exchanger 210 and the 3-way valve 220 are used. The temperature of the hot water 204 to be supplied to the radiation panel unit 300 according to the outside temperature can be adjusted, and the air system 400 is directly supplied with hot water of about 60 ℃ to control in conjunction with the radiation panel unit 300 By doing so, it is possible to eliminate the discomfort of the occupant due to the reaction time delay (lag) of the radiation panel unit 300;

When cooling, cold water of about 7 ° C. is supplied, and when the existing air compensation control is applied thereto, it is supplied to the radiation panel unit 300 according to the outside temperature by using the heat exchanger 210 and the three-way valve 220. The temperature of the cold water 204 can be adjusted to a range of 12 to 20 ° C., and the risk of condensation can be reduced by keeping the cold water temperature relatively high at about 20 ° C. during a period of high risk of condensation, and the air system 400. By supplying cold water at about 7 ° C. immediately in conjunction with the radiation panel 300 to control the dew point temperature of the room below the floor surface temperature to prevent condensation and the residents' response according to the reaction time of the radiation panel 300. Unpleasantness can be prevented.

3 is a conceptual diagram showing the configuration of a heating and cooling system using a combination of an ondol and an air system according to another embodiment of the present invention. Referring to FIG. 3, a heat source unit 100, a distribution unit 200, a radiation panel unit 300, an air system 400, and a control unit 500 are illustrated.

The present invention is a heat source unit 100 for producing cold water and hot water using a gas absorption cold or hot water heater or district heating and medium temperature water absorption freezer, radiant panel unit 300 and air system 400 of each room in the generation of hot and cold water Distribution unit 200 for supplying, radiation panel unit 300, air system 400 including ventilation, dehumidification, total heat exchange and air cleaning function, room temperature and humidity, floor surface temperature, outside air temperature and CO ₂ concentration And a control unit 500 for detecting and the like and operating the calculation and the device.

In the case of the heat source unit 100, the central type is installed in the same unit or complex unit, and can be branched for each household. The individual type is installed by providing a separate heat source chamber in the household, and in the case of the air system 400, the supply fan and the piping The coil and air-cleaning part are installed adjacent to or integrated with the window that separates the living room and the balcony in the household, and the heat exchange part and the exhaust fan 414 part are installed in the balcony space.

The distribution unit 200 includes an open / close valve that can control the flow rate of each chamber, a three-way valve that can adjust the temperature, a heat exchanger, a pump, and the like. In the case of the control unit 500, a control unit is installed in each room in the household at a height where the existing room temperature controller is installed, and this can be operated in connection with the home automation system of the whole household. The indoor temperature sensor, the indoor humidity sensor, and the CO ₂ sensor are included in the control unit and can be installed, and the floor temperature sensor is embedded in the place where the indoor pipe is introduced. The outside air temperature sensor and the outside air humidity sensor are installed in the air inlet which is supplied with air, and the window position sensor is installed at a predetermined position of the window.

4 is a cross-sectional view showing a living room and a balcony in which an air conditioning and heating system using both an ondol and an air system according to an exemplary embodiment of the present invention is installed. 4, the indoor temperature sensor 511, the indoor humidity sensor 512, the CO ₂ sensor 513, the outside air temperature sensor 514, the outside air humidity sensor 515, the floor temperature sensor 516, and the window opening / closing sensor ( 517 is shown.

The present invention detects the indoor temperature and humidity, the temperature and humidity of the outside air, the floor temperature, and heating and cooling, and in addition to detecting the opening or closing of the windows to prevent condensation on the floor when the windows are opened. In order to prevent cold water from being supplied to the bottom pipe and to operate the air system 400, and more preferably, increase the rotational speed of the air supply fan 411 of the air system 400 to serve as an air curtain. To help.

5 is a graph showing the effect of applying the air system as auxiliary cooling through the experiment of the control method of the heating and cooling system using the ondol and the air system according to a preferred embodiment of the present invention. It is confirmed that the room temperature fall time can be significantly reduced when the air system is operated simultaneously as auxiliary cooling (b) than when the cooling operation initial stage 10 operates only the bottom radiant cooling (a). During the period in which the cooling operation continues (20), it can be seen that the room temperature set by only the bottom radiation cooling operation can be stably maintained without the operation of the auxiliary cooling. Thus, the control method of the air conditioning system for applying the air system as auxiliary cooling in the structure of the present invention is as follows.

6A is a graph illustrating a control method concept for applying an air system as auxiliary cooling in a control method of an air conditioning and heating system using an ondol and an air system according to a preferred embodiment of the present invention. When operating the floor radiation cooling system as in the present embodiment so that the room temperature is controlled within the control deviation (Diff) around the set room temperature (a0), the floor is set based on the set upper limit (a1) and the set lower limit (a2). When the operation control of radiative cooling is made and the room temperature rises more than the control deviation (Diff) from the set room temperature (a0) during the initial operation or during the operation, the air system is set to the auxiliary cooling set upper limit (a3) and the auxiliary cooling set lower limit (a0). Operation is performed as auxiliary cooling on the basis of.

If you want to operate the floor radiant cooling and air system within a certain control range based on the room temperature, operate the floor radiant cooling system and the air system at the same time at the beginning of operation, and if the room temperature reaches the set room temperature (a0), Operation of the air system as cooling is stopped, and afterwards, continuous cooling operation is enabled by the operation of only the bottom radiation cooling system. If the room temperature rises above a certain control deviation (Diff) from the set room temperature (a0) due to a sudden increase in the internal load, the air system operation as auxiliary cooling is started again. As described above, the operation of the air system as auxiliary cooling is based on the sum of the set room temperature (a0) or the auxiliary cooling set lower limit (a0) and the sum of the set room temperature (a0) and the control deviation (Diff), that is, the auxiliary cooling set upper limit (a3). 2 position control.

6B is a graph illustrating a control method concept for applying an air system as auxiliary heating in a control method of a heating and cooling system using an ondol and an air system according to a preferred embodiment of the present invention. When operating the floor radiant heating system as in the present embodiment so that the room temperature is controlled within the control deviation Diff around the set room temperature b0, the floor is set based on the set upper limit b1 and the lower limit b2. When the operation of radiant heating is controlled and the room temperature drops below the control deviation (Diff) from the set room temperature (b0) during the initial operation or during operation, the auxiliary heating set upper limit (b0) and auxiliary heating are supplied by supplying hot water to the air system. Operation is performed as auxiliary heating based on the set lower limit b3.

7A, 7B, and 7C are flowcharts illustrating a control method for applying an air system as auxiliary cooling in a control method of a cooling and heating system using an ondol and an air system according to a preferred embodiment of the present invention. The present invention relates to a method for controlling a cooling and heating system using an ondol and an air system, and to prevent the condensation of the bottom surface when applying the existing floor radiant heating system to cooling, the discomfort caused by the floor surface temperature according to the characteristics of the occupants It is necessary to prevent the enemy from occurring, which limits the cooling capacity of the cooling system.

This can be controlled to the set room temperature and the control deviation range by applying the air system as auxiliary cooling. Even in the case of existing heating, if there is unpleasantness due to the floor surface temperature depending on the occupants, the heating capacity is limited, which causes problems in room temperature control.However, room temperature control is possible by applying convection heating by supplying hot water to the coil of the air system. .

As described above, the present invention applies a floor ondol structure used for existing heating to cooling, applies an air system to prevent condensation, and also applies it as auxiliary cooling. The prior art (Korea Patent Publication No. 10-0403237 It is to overcome the limitations of the room temperature control in operation of the radiation cooling system using the floor, the floor ondol structure and the operation control method to prevent the dew condensation of the radiation cooling system. An embodiment of a control method for applying to sub-cooling will now be described with reference to FIG. 5.

The control unit is largely composed of (a) an input stage, (b) a state setting stage, (c) an operation stage, (d) a data synthesis stage, and (e) an output stage. (a) In the input stage, room temperature (T _R ), room humidity (H _R ), floor surface temperature (T _F ), set room temperature (T _SET ), set floor temperature (T _FSET ), room temperature control deviation (Diff), condensation In this step, the safety factor (SF) and the floor temperature control deviation (FDiff) of the control are input. (b) The state setting step (a) is a step of determining whether the cooling mode 10 and the heating mode 60 of the room with the variable values input in the input step, in the case of the cooling mode 10 and the heating mode ( In case of 60), a separate calculation step is performed for each.

(b) In the cooling mode (10) in the state setting step, (a) calculates the dew point temperature (T _D ) of the room with room temperature (T _R ) and room humidity (H _R ) input in the input step, ( a) _{Calculate the} set dew point temperature (T _Dset , the value obtained by subtracting the safety factor of the condensation control from the floor surface temperature) with the floor surface temperature (T _F ) and the safety factor (SF) of the dew condensation input in the input step. (C-10-1) C-1 operation step of calculating dew point temperature error (T _Derror , minus dew point temperature minus set dew point temperature) with dew point temperature (T _D ) and set dew point temperature (T _Dset ),

When the calculated dew point temperature error (T _Derror ) is less than zero (11), the condensation is true, and the dew point temperature error (T _Derror ) is not less than zero (12). ) If the dew point temperature error (T _Derror ) is greater than (a) the safety factor (SF) of the condensation control input in the input stage (13), the condensation is set to false, and the dew point temperature error (T). _{If the} value of _Derror is not less than 0 (12) and the dew point temperature error (T _Derror ) is not (a) greater than the safety factor (SF) of the dew condensation control entered at the input stage (14), the condensation is transferred. (C-10-2) operation C-2 of exporting the value of the state,

(a) When the room temperature (T _R ) input at the input stage is greater than the sum of the set room temperature (T _SET ) and the room temperature control deviation (Diff) (15), the subcooling operation is set to true. (a) The room temperature (T _R ) input at the input stage is not greater than the sum of the set room temperature (T _SET ) and the room temperature control deviation (Diff) (16), and (a) the room temperature (T _R ) input at the input stage. If it is smaller than this set room temperature (T _SET ) (17), SubCooling is set to false, and (a) The room temperature (T _R ) input at the input stage is set to the set room temperature (T _SET ). Subcooling is not greater than the sum of the room temperature control deviations (16) and (a) if the room temperature (T _R ) entered at the input stage is not less than the set room temperature (T _SET ) (18). (C-10-3) C-3 operation step of exporting to the previous state value,

(a) The room temperature (T _R ) entered at the input stage is greater than the sum of the product of the set room temperature (T _SET ) and the room temperature control deviation (Diff) multiplied by α (0 <α <1, generally 0.5). (19), CoolingOn is set to true, and (a) The room temperature (T _R ) input in the input step is set to α (0) between the set room temperature (T _SET ) and the room temperature control deviation (Diff). <α <1, generally 0.5.) and not greater than the sum of the products multiplied by (20), and (a) the room temperature (T _R ) entered at the input stage is the set room temperature (T _SET ) and room temperature control deviation (Diff). ) Is less than the difference of multiplying α (0 <α <1, generally taking 0.5) (21), CoolingOn is set to false, and (a) Input at the input stage. The room temperature (T _R ) is not greater than the sum of the set room temperature (T _SET ) and the room temperature control deviation (Diff) multiplied by α (0 <α <1, generally 0.5) (20), (a ) the room temperature input at the input step (T _R) is set to the room temperature (T _sET) and room temperature control deviation (Diff) α (0 < If it is not smaller than the difference of multiplying α <1, generally 0.5) (22), operation C-4 of exporting cooling on to the previous state (c-10-4) ,

(a) When the floor surface temperature (T _F ) input in the input step is smaller than the set floor temperature (T _FSET ) (23), the floor surface temperature Tfdiscomfort is true, and (a) The floor surface temperature (T _F ) input at the input stage is not less than the set floor temperature (T _FSET ) (24), and (a) The floor surface temperature (T _F ) input at the input stage is the set floor temperature (T _FSET ). If it is larger than the sum of the FDiff and the floor temperature control deviation (25), the floor surface temperature Tfdiscomfort is set to false, and (a) the floor surface temperature (T _F ) input at the input stage is It is not less than the set floor temperature (T _FSET ) (24), and (a) the floor surface temperature (T _F ) input at the input stage is not greater than the sum of the set floor temperature (T _FSET ) and the floor temperature control deviation (FDiff). (C-10-5) the C-5 operation step of exporting the tfdiscomfort to the previous state of the floor surface temperature (26),

(C-10-6) C-6 operation step of determining the supply cold water temperature (T _w-floor ) of the radiation panel unit 300 and the supply cold water temperature (T _w-DH ) of the air system,

Condensation derived from the second operation step (c-10-2) and (C-10-3) the truth value of sub-cooling operation derived from the sub-cooling operation (C-10-3). If condensation is true or SubCooling is true (27), DHOn of the air system is true and condensation is possible. If Condensation is false and SubCooling is false (28), DHOn of the air system is set to false and the above (c-10) -4) with the truth value of CoolingOn derived from C-4 operation stage and Tfdiscomfort of floor surface temperature derived from C-5 operation stage, If CoolingOn is true and floor surface temperature Tfdiscomfort is false (29), RFOperation is set to true and cooling is performed. Need (C) When (CoolingOn) is false or Tfdiscomfort is true (30), the floor radiation heating and cooling operation (RFOperation) is false. step,

(b) In the heating mode 60 in the state setting step, (a) When the room temperature (T _R ) input in the input step is smaller than the difference between the setting room temperature (T _SET ) and the room temperature control deviation (Diff) (61). , SubHeating is true, and (a) The room temperature (T _R ) input at the input stage is not smaller than the difference between the set room temperature (T _SET ) and the room temperature control deviation (Diff) (62). ), (a) When the room temperature (T _R ) input at the input stage is greater than the set room temperature (T _SET ) (63), the subheating operation is set to false, and (a) at the input stage. The entered room temperature (T _R ) is not smaller than the difference between the set room temperature (T _SET ) and the room temperature control deviation (Diff) (62), and (a) The room temperature (T _R ) input at the input stage is set to room temperature (T _SET ). If not greater than (64), substep (1) (c-60-1) operation of exporting SubHeating to the value of the previous state,

(a) The room temperature (T _R ) input at the input stage is smaller than the difference between the set room temperature (T _SET ) and the room temperature control deviation (Diff) times α (0 <α <1, generally 0.5). (65), Heating On (HeatingOn) is true, and (a) The room temperature (T _R ) input at the input stage is α (0) between the set room temperature (T _SET ) and the room temperature control deviation (Diff). <α <1, generally 0.5.), but not less than the difference of the product of (), and (a) the room temperature (T _R ) entered at the input stage is the set room temperature (T _SET ) and room temperature control deviation (Diff). ) Is greater than the sum of α (0 <α <1, generally 0.5) .HeatingOn is false and (a) input at the input stage. The room temperature (T _R ) is not less than the difference between the set room temperature (T _SET ) and the room temperature control deviation (Diff) multiplied by α (0 <α <1, generally 0.5) (66), (a ) The room temperature (T _R ) input at the input stage is equal to α (0 <) between the set room temperature (T _SET ) and the room temperature control deviation (Diff). If not greater than the sum of the product multiplied by α <1, generally 0.5) (68), the H-2 calculation step of exporting heating or not (HeatingOn) to the previous value (c-60-2) ,

(a) When the floor surface temperature (T _F ) input in the input step is greater than the set floor temperature (T _FSET ) (69), the floor surface temperature Tfdiscomfort is true, and (a) The floor surface temperature (T _F ) input at the input stage is not greater than the set floor temperature (T _FSET ) (70), and (a) The floor surface temperature (T _F ) input at the input stage is the set floor temperature (T _FSET ) If it is smaller than the difference between the FDiff and the floor temperature control (71), the floor surface temperature Tfdiscomfort is set to false, and (a) the floor surface temperature (T _F ) input at the input stage is It is not greater than the set floor temperature (T _FSET ) (70), and (a) the floor surface temperature (T _F ) input at the input stage is not smaller than the difference between the set floor temperature (T _FSET ) and the floor temperature control deviation (FDiff). (72) step (c-60-3) step H-3 of exporting the bottom surface temperature offensive (Tfdiscomfort) to the previous value;

(C-60-4) H-4 operation step of determining the supply hot water temperature (T _w-floor ) of the radiation panel unit 300 and the supply hot water temperature (T _w-DH ) of the air system,

In the case where the sub-heating operation (Sub-Heating) is true and the sub-heating operation (Sub-Heating) is true (73), the air system If DHOn is true and SubHeating is false (74), DHOn of the air system is false, and the above ( c-60-2) Truth value of heating need derived from operation H-2 and (c-60-3) Tfdiscomfort floor surface temperature derived from operation H-3. If heating on is true and floor surface temperature Tfdiscomfort is false (75), floor radiating heating and cooling (RFOperation) is true. If heating on is false or floor surface temperature Tfdiscomfort is true (76), floor radiating heating / heating operation (RFOperation) is set to false. (D) the data synthesis stage,

In the case of the cooling mode 10 or the heating mode 60 in the (b) state setting step, in the cooling mode 10 (c-10-6), the radiation derived from the C-6 operation step Supply cold water temperature (T _w-floor ) of the panel unit 300, supply cold water temperature (T _w-DH ) of the air system, in the heating mode 60 (c-60-4) The supplied cold water temperature (T _w-floor ) of the radiation panel unit 300 and the supplied cold water temperature (T _w-DH ) of the air system, (d) whether the operation of the air system (DHOn) derived from the data synthesis step and And (e) an output step of outputting the truth value of RFOperation.

It will be apparent to those skilled in the art that the dew point temperature can be calculated from room temperature and room humidity. That is, according to Udagawa's "Pasoconniyoru Variation Law", O-M Corporation, 1986, p28, the temperature of saturated wet air having the same absolute humidity as the absolute humidity of a given wet air under the same pressure is determined by dew point temperature (T). _D ), if the partial pressure of water vapor of wet air is Pw, the temperature at which Pw becomes saturated steam pressure Pws becomes the dew point temperature T _D. Therefore, if we know the steam partial pressure of a certain humid air, we can find the inverse function of the function to find the steam partial pressure from the room temperature and substitute Pw.However, the equation to find the steam partial pressure cannot be solved for temperature. Use an approximation.

i) between 0 ° C and 50 ° C

T _D = -77.199 + 13.198Y-0.63772Y ² + 0.71098Y ³

ii) between -50 ° C and 0 ° C

T _D = -60.662 + 7.4624Y-0.20594Y ² + 0.016321Y ³

Where Y is ln (1,000 Pw)

To solve the dew point temperature using an iterative calculation method, the above-mentioned document by Udagawa Kogaku et al. Or Michael J. Brandemuehl et al., HVAC 2 Toolkit- A toolkit for secondary HVAC system energy calculations, ASHRAE, 1993, pp. It is apparent to those skilled in the art that the calculation can be made with reference to 7-1 to 7-40.

8A is a graph illustrating a control method concept for applying an initial cooling operation to an initial cooling operation among a control method of an air conditioning and heating system using an ondol and an air system according to a preferred embodiment of the present invention. In determining the required room reservation time (a5), reservation operation time (a7), and system operation time (a0) required to apply the cooling operation reservation, the occupant reservation time (a5) is input from the occupant and the initial floor surface temperature is cooled. Predicts the time it takes for the temperature to fall to the limit floor temperature (T _F-limit ), that is, the reservation operation time (a7) by reflecting the room temperature, the floor temperature and the structure characteristics of the non-cooling system, and uses the system operation time (a0). Determine.

In other words, by controlling the room temperature of each room in the range of the set upper limit (a1) and the set lower limit (a2) by using an open / close valve, the set floor temperature (T _FSET ) previously input by the occupant to apply the reservation operation and , a value from among threshold (condensation plus a safety factor (SF) of the control value for the dew point temperature (T _D) calculated from the room temperature and room humidity) for a ground temperature of condensation of the bottom surface does not cause the bottom temperature (T _{F- By setting a limit} (a4), the time when the floor surface temperature becomes the limit floor temperature is predicted by the reserved operation time (a7), and the floor radiation cooling is operated from the system operation time (a0) to the reserved operation time (a7), As shown in section A of FIG. 8A, the floor structure is cooled beforehand. In the cooling operation reservation, the reservation operation is carried out before the return time, and the occupant performs the cooling operation up to the limit floor temperature (T _F-limit ) in advance, thereby reducing the time it takes to reach the reset operation room temperature (T _set ). Can be.

During operation of the floor radiative cooling system, the initial operation temperature is lowered before the room temperature, and the room temperature is lowered due to a delay in the reaction over time, so that the room temperature is set as shown in section B of FIG. 8A after the reservation time (a5). If the temperature range is not reached, auxiliary cooling should be operated in parallel.

8B is a graph illustrating a control method concept for applying an initial heating reservation operation to a heating and cooling system control method using an ondol and an air system according to a preferred embodiment of the present invention. In determining the necessary room reservation time (b5), reservation operation time (b7), and system operation time (b0) required to apply the heating operation reservation, the occupant reservation time (b5) is input from the occupant and the initial floor surface temperature of the heating is Predict the time required to reach the limit floor temperature (T _F-limit ), that is, the reservation operation time (b7) by reflecting the room temperature, the floor temperature, and the structure characteristics of the non-discharge method, and use it to calculate the system operation time (b0). Decide

In other words, by controlling the room temperature of each room in the range of the set upper limit (b1) and the set lower limit (b2) by using an open / close valve, the set floor temperature (T _FSET ) previously input by the occupant in order to apply the reserved operation. By setting the limit floor temperature (T _F-limit ) (b3), the time when the floor surface temperature becomes the limit floor temperature is predicted as the reserved operation time (b7), and the system operation time (b0) to the reserved operation time (b7). By operating the floor radiant heating, the floor structure is thermally stored in advance before the real time as shown in section C of FIG. 8B. The reservation for heating operation is made before the return time and the reservation operation is performed first, so that the occupant performs the heating operation up to the limit floor temperature (T _F-limit ) in advance, thereby reducing the time it takes to reach the room setting (T _set ). Can be.

During operation of the floor radiant heating system, the initial temperature rises earlier than the room temperature, and the room temperature rises due to a delayed reaction over time, so that the room temperature is set as shown in the section D of FIG. 8B after the reservation time (b5). If the temperature cannot be reached, the auxiliary heating should be operated in parallel.

FIG. 10 is a simplified conceptual diagram of a floor structure according to a configuration of a control variable in order to predict floor surface temperature in the construction of a control method of a heating and cooling system using an ondol and an air system according to a preferred embodiment of the present invention.

In the present invention, a method of modeling the floor surface temperature change is applied to obtain a reservation operation time in which the floor radiant heating and cooling is operated before the reserving room reservation time, as shown in FIG. 10 of the cooling and heating system using the ondol and the air system of the present invention. In the control method configuration, when the radiation panel 300 is simplified in one dimension according to the configuration of the control variable for the bottom surface temperature prediction, it is expressed by the following equation.

As shown in FIG. 10, when the control variables are plotted around the radiation panel unit 300, the temperature Tw of the water supplied to the radiation panel unit 300, the heat transfer Qs in the pipe, the heat transfer coefficient U of the cold water and the floor structure U _S ), the temperature of the floor structure (T _F ), the heat capacity of the floor structure (C _F ), the heat transfer from the floor (Q _D ), the heat transfer coefficient of the floor surface (U _D ), room temperature (T _R ). . According to the temperature Tw of the water supplied to the radiation panel unit 300 and the heat transfer coefficient U _S of the cold water and the floor structure, the heat transfer Qs in the pipe is changed, which is dependent on the temperature T _F of the floor structure. Will be affected.

In addition, the heat transfer at the bottom (Q _D ) is changed according to the heat capacity (C _F ) of the floor structure and the heat transfer coefficient (U _D ) of the floor surface, thereby affecting the room temperature. During the time that the bottom surface temperature reaches the limit, the bottom temperature (T _{F_limit)} to predict the time, the temperature of the water supplied (Tw) and the bottom surface temperature of the marginal bottom temperature (T _{F_limit)} to reach the room temperature (T _R) is Assuming that there is little change, the differential equation is derived as follows.

here,

In order to find the floor surface temperature,

If you solve the homogeneous equation,

here,

Therefore, the estimated value of floor surface temperature is as follows.

Here, when t = 0, the initial value of T _F is (T ₀ + T _C ). So using this,

So if we take the value of T _C ,

For the cooling, a larger value compared to a bottom temperature limit value (T _{F_condensation)} for the calculated dew receiving resident enters the room temperature and room humidity in a bottom temperature limit value for comfort input (T _{F_discomfort)} and non-cooling condition for limit the bottom temperature, and a (T _{F_limit)} heating, to a bottom temperature limit value for a pleasant resident input (T _{F_discomfort)} to limit the bottom temperature (T _{F_limit),} as follows: when calculating the time to reach it.

Here, the change in room temperature is small compared to the change of floor surface temperature during the reservation operation time, and it is assumed that the room temperature is constant. When the temperature of the cold and hot water supplied at the initial stage of cooling and heating is constantly controlled, the value of T _C and T ₀ are constant. It becomes a constant, and it is possible to estimate the time taken for the bottom surface temperature to reach the _limit floor temperature (T _{F_limit} ).

here,

C _F : heat capacity of floor structure [J / m ² K]

T _R : room air temperature [K]

T _{F_limit} : limit of the floor surface temperature [K]

T _D : indoor dew point temperature [K]

SF: Safety factor of dew condensation control [K]

T _Fset : Limit of the floor surface in consideration of comfort

temperature for comfort) [K]

T _F-initial : Initial floor surface temperature before heating and cooling operation

temperature) [K]

T _F : temperature of the floor mass ≒ floor surface temperature [K]

T _W : temperature of the water in the floor pipes [K]

Q _D : heat transfer from the floor structure to room

[W / m ² ]

Q _S : heat transfer from heat carrier to floor mass

[W / m ² ]

U _D : heat transfer coefficient between floor

surface and room) [W / m ² K]

U _S : heat transfer coefficient between cold water and floor structure

heat carrier and floor mass) [W / m ² K]

, [kg/s]), 흐르는 유체의 특성에 따라 달라질 수 있다. 이를 고려한 배관에서의 대류열전달은 Nu_D와 Re_D를 이용한 아래와 같은 식으로 유도될 수 있다. The heat transfer coefficient (U _D ) of the floor surface has been previously documented by Bjarne W. Olesen, Eric Michel, Frederic Bonnefoi, and Michele De Carli, Heat exchange coefficient between floor surface and space by floor cooling-theory or a question of definition, ASHRAE According to 2000 Winter meeting, DA-00-8-2), it is about 7.5 W / m ² K, and the heat transfer coefficient of cold water and floor structure reflects the characteristics of floor structure in general residential building as the following table. It can be calculated by separating convective heat transfer in piping and heat transfer in structure. Convective heat transfer in a pipe is characterized by the diameter (D, [m]) of the pipe or the design flow rate in the pipe (

, [kg / s]), depending on the nature of the flowing fluid. Convective heat transfer in the pipe considering this can be induced by the following equation using Nu _D and Re _D.

here,

)에 대한 대류열전달계수값(h)으로 정리하면,This is the design flow rate of each chamber

Summarized by the convective heat transfer coefficient (h) for

Examples of physical properties according to the temperature of the fluid in the pipe, that is, water, are shown in the following table.

Tw (K) Pr (-) K (W / mK) μ (N · s / m ² ) 280 10.26 582 × 10 ^-3 1422 × 10 ^-3 285 8.81 590 × 10 ^-3 1225 × 10 ^-3 290 7.56 598 × 10 ^-3 1080 × 10 ^-3 295 6.62 606 × 10 ^-3 959 × 10 ^-3 300 5.83 613 × 10 ^-3 855 × 10 ^-3 305 5.2 620 × 10 ^-3 769 × 10 ^-3

Property composition Thermal Conductivity (W / mK) Density (kg / m ³ ) Specific heat (J / kgK) Thickness (m) Floorboard 0.1856 1200 1260 0.002 Morter 0.72 1865 840 0.045 pipe 0.034 30 1470 0.002

9 is a flowchart illustrating a control method for applying an initial cooling operation to an initial cooling operation among a control method of an air conditioning and heating system using both an ondol and an air system according to a preferred embodiment of the present invention. The heating / cooling reservation operation is divided into the case where the reservation operation is performed for a predetermined time before the real time and the reservation operation for the time calculated automatically.

When the reservation operation is applied based on the automatically calculated time, the time at which the floor surface temperature reaches the limit floor temperature T _{F_limit} as the reservation operation time Δt _pre based on the equation predicted as shown in FIG. 8. Reflect. An embodiment of a control method for applying an initial cooling / cooling operation to a reserved operation will now be described with reference to FIG. 7.

It is composed of (a) input step, (b) state setting step, (c) calculation step, and (d) output step of the control unit for initial cooling and heating operation. (a) In the input stage, it is necessary to estimate the time required for the present time (t _p ), the reserved room time (t _r ), the reserved operation time (Δt _pre ), and the floor surface temperature to reach the limit floor temperature (T _{F_limit} ). Enter the coefficient (A ₀ , T _C , T ₀ ) and the reserved operation time determination method. (b) In the state setting step, according to the reservation driving time determination method inputted in the input step (a), whether the reservation driving time determination is a value designated by the occupant (80) or whether it is automatic by a prediction equation (90). If the determination is made automatically by a predictive equation (90), the cooling mode 91 and the heating mode 92 are determined.

(c) In the calculating step, when the reservation operation time determination is set to the value designated by the occupant (80), the system operation reservation time (t _st ) is the reserved operation time (Δt _pre ) specified by the occupant at the actual reservation time (t _r ). Is determined by subtracting the value, and the reservation operation time is automatically determined by the reservation formula (90). In the cooling mode (91), the set floor temperature (T _Fset ) and dew point temperature (T _D ) in consideration of floor comfort are determined. Set the larger value of the condensation control factor (SF) plus the limit floor temperature (T _F-limit ), and in the heating mode (92), set floor temperature (T _Fset ) considering the floor comfort (T _fset ). and the step of computing a reserved operation time (Δt _pre) by setting the _F-limit) by applying them to the reservation in for the reserved operation time determined, in the system operation scheduled time (t _st) the occupancy reservation time (t _r) By subtracting the reservation operation time Δt _pre calculated through the cooling mode 91 and the heating mode 92, respectively. Decide

(A) If the current time input in the input step exceeds the system operation reservation time (t _st ) derived in the calculation process (93), the truth value of the reservation operation (PreOperation) is set to true. (a) If the current time input in the input step does not exceed the system operation reservation time (t _st ) derived in the calculation process (94), the truth value of the reservation operation (PreOperation) is set to false. It includes the process of operation.

(d) In the outputting step, the truth value of the pre-operation operation determined in the calculation process is output. In the output step (d), if PreOperation is true, the floor radiant heating and cooling system is operated, and the cold or hot water is adjusted to the predetermined water temperature in the system initialization process to the radiant panel unit 300. Supplied.

When cold or hot water is supplied to the radiation panel unit 300 during the time that the occupant is not occupied, the structure is cooled or stored in advance, and when the room temperature reaches the set temperature range by reaching the room reservation time t _r , the floor radiant heating and heating When the operation of the system is stopped and the room temperature does not reach the set temperature range because the room reservation time (t _r ) is reached, the air system is applied as auxiliary cooling in the control method of the air conditioning system using the ondol and the air system of the present invention. The control measures to do this are applied in parallel.

11 is a perspective view showing a control device to which a control method of a heating and cooling system using an ondol and an air system according to a preferred embodiment of the present invention is applied. Referring to Figure 11, the control device according to a preferred embodiment of the present invention, the main power switch 541, air conditioning switch 542, auxiliary air conditioning switch 543, the indoor environment display unit 544, the operating state control unit ( 545), the reservation time adjustment unit 546. In order to implement the control method of FIGS. 7A, 7B, 7C, and 9, the control apparatus of the present invention should include a heating / cooling switching switch 542, and the occupant decides whether to operate the auxiliary heating / cooling operation. It is preferable to include an auxiliary cooling operation switch 543 which can be selected from the outside.

The indoor environment display unit 544 displays the outdoor air temperature, the supply water temperature, the room temperature of each room, the indoor humidity, the floor surface temperature, and the dew point temperature. The operation state control unit 545 selects whether to operate each room. The operation mode of each room such as the operation switch part, the normal mode and the sub-heating and sub-cooling mode, the sleeping mode, the outing mode, and the timer mode It consists of a selectable part, a part to adjust the set room temperature of each room, and a part to adjust the set floor temperature considering the floor comfort of each room.

The value input to the part to adjust the set floor temperature in consideration of the floor comfort of each room corresponds to the floor temperature lower limit value in the case of the cooling operation in the air-conditioning switching switch 542, the heating in the air-conditioning switching switch 542 In operation, this corresponds to the upper floor temperature limit. The reservation time adjusting unit 546 may include a reservation driving operation switch part for determining whether to apply reservation driving, a part for inputting a reservation reservation time, a part for inputting a stop time, and a resident inputting a reservation driving time (Δt _pre ). It is composed of the part which designates so that the reservation operation time (Δt _pre ) is given as 0 so that the reservation operation time determination can be automatically determined by the reservation formula.

In FIG. 10, a switch for determining whether to automatically perform the reservation driving time is not installed, but a separate switch may be installed to allow the occupant to set manually or automatically.

Although the technical spirit of the present invention has been described in detail with reference to the above-described embodiments, the above-described embodiments are not intended to be limiting and not for limitation thereof, and a person of ordinary skill in the art will appreciate It will be understood that various embodiments are possible within the scope.

According to the present invention having the above configuration, by using the existing ondol heating system, which is mostly installed in residential buildings in the cooling system, it is possible to configure a cooling and heating system using both the ondol and the air system, as a control method By applying sub-cooling and pre-cooling control methods, time lag problems can be solved, condensation can be controlled, and the occupants can be comfortable and operate the system efficiently.

In addition, by using air-cooled freezers or gas-absorbed cold and hot water in parallel with existing boilers, the use of summer electricity is reduced, by applying the floor ondol structure used for conventional heating to cooling and applying air systems to prevent condensation. It can improve occupant comfort and reduce energy consumption.

Claims (14)

A heat source unit for supplying hot or cold water; A radiation panel unit embedded in a floor of the living room and including a bottom pipe through which hot or cold water supplied from the heat source part passes and a heat storage layer covering the floor pipe; In the method of controlling a cooling and heating system including an air system for supplying air in the living room, (a) obtaining a room temperature measurement of the living room and storing a room temperature set value and a room temperature control deviation; (b) when the indoor temperature measurement value is greater than the indoor temperature set value plus the indoor temperature control deviation, the operating state of the air system is cooled, and when the indoor temperature measurement value is smaller than the indoor temperature set value, the air system Determining an operating state of the vehicle as a stationary state; And (c) comparing the current operating state of the air system with the result determined in step (b) to maintain or change the operating state of the air system. Control method. The method of claim 1, In the step (b), if the indoor temperature measurement value is greater than or equal to the indoor temperature set value and less than or equal to the indoor temperature set value plus the indoor temperature control deviation, determining to maintain the operation state of the air system. Control method of a cooling and heating system using an ondol and an air system further included. A heat source unit for supplying hot or cold water; A radiation panel unit embedded in a floor of the living room and including a bottom pipe through which hot or cold water supplied from the heat source part passes and a heat storage layer covering the floor pipe; In the method of controlling a cooling and heating system including an air system for supplying air in the living room, (a) acquiring indoor temperature measurement, indoor humidity measurement, and floor surface temperature measurement of the living room, and storing a dew point temperature calculated from an indoor temperature set value, an indoor temperature control deviation, a safety factor, the indoor temperature measurement and the indoor humidity measurement. step; (b) cooling the operating state of the air system when the room temperature measurement is greater than the room temperature set value plus the room temperature control deviation or when the floor surface temperature measurement is less than the dew point temperature plus the safety factor. In the state, Determining the operating state of the air system as a stop state when the indoor temperature measurement value is less than or equal to the indoor temperature set value and the floor surface temperature measurement value is greater than the dew point temperature plus two times the safety factor; And  (c) comparing the current operating state of the air system with the result determined in step (b) to maintain or change the operating state of the air system; Way. The method of claim 3, In the step (b), if the indoor temperature measurement value is greater than the indoor temperature setting value and less than or equal to the room temperature control value plus the room temperature control deviation, or the floor surface temperature measurement value provides the safety factor at the dew point temperature. The control of the heating and heating system using both the ondol and the air system further comprising the step of determining to maintain the operating state of the air system if greater than or equal to the value and less than or equal to the dew point temperature plus 2 times the safety factor. Way. The method of claim 3, Any one of the steps (a) to (c), (d) When the indoor temperature measurement value is greater than the indoor temperature set value plus the value obtained by multiplying the indoor temperature control deviation by a weight selected between 0 and 1, cold water is supplied to the radiation panel unit. Determining that the cold water is not supplied to the radiation panel unit when the room temperature measurement value is smaller than the room temperature setting value minus the value obtained by multiplying the room temperature control deviation by the weight; And (e) comparing the current operation state of the radiation panel unit with the result determined in step (d) to maintain or change the state of supplying cold water to the radiation panel unit. Control method of a heating and cooling system. The method of claim 5, In the step (d), the indoor temperature measurement value is greater than or equal to the room temperature control value minus the product of the indoor temperature control deviation multiplied by the weight, and the room temperature control value is multiplied by the indoor temperature control deviation by the weight value. The control method of the heating and cooling system using an ondol and an air system further comprising the step of determining to maintain the state of supplying the cold water to the radiation panel unit if less than or equal to the value. The method of claim 3, Any one of the steps (a) to (c), (d) storing the floor surface temperature set value and the floor surface temperature control deviation of the living room; (e) When the bottom surface temperature measurement value is greater than the bottom surface temperature setting value plus the bottom surface temperature control deviation, cold water is supplied to the radiation panel unit, and the bottom surface temperature measurement value is the bottom surface temperature setting value. Determining that the cold water is not supplied to the radiation panel unit if smaller; And (i) comparing the current operation state of the radiation panel unit with the result determined in step (e) and maintaining or changing the state of supplying cold water to the radiation panel unit. Control method of a heating and cooling system. The method of claim 7, wherein In the step (e), when the bottom surface temperature measurement value is greater than or equal to the bottom surface temperature set value and is less than or equal to the bottom surface temperature set value plus the bottom surface temperature control deviation, cold water is supplied to the radiation panel unit. The control method of the heating and cooling system using the ondol and the air system further comprising the step of determining to maintain the state. The method of claim 3, Any one of the steps (a) to (c), (d) If the indoor temperature measurement value is greater than the indoor temperature set value plus the indoor temperature control deviation, the operating state of the air system is stopped. When the room temperature measurement value is less than the room temperature set value minus the room temperature control deviation, the operating state of the air system is heated. If the room temperature measurement value is greater than or equal to the room temperature set value minus the room temperature control deviation and less than or equal to the room temperature set value plus the room temperature control deviation, determine to maintain the operating state of the air system. Doing; And (e) comparing the current operating state of the air system with the result determined in step (d) to maintain or change the operating state of the air system. Control method. The method of claim 3, Any one of the steps (a) to (c), (d) If the indoor temperature measurement value is greater than the indoor temperature set value plus the value obtained by multiplying the indoor temperature control deviation by a weight selected between 0 and 1, hot water is not supplied to the radiation panel unit. In a state in which hot water is supplied to the radiation panel unit when the indoor temperature measurement value is smaller than the indoor temperature setting value minus the value obtained by multiplying the indoor temperature control deviation by the weight. The room temperature measurement value is greater than or equal to the room temperature set value minus the value obtained by multiplying the room temperature control deviation by the weight value and is less than the room temperature set value plus the room temperature control deviation multiplied by the weight value. In the same case, determining to maintain a state of supplying hot water to the radiation panel unit; And (e) comparing the current operating state of the radiation panel unit with the result determined in step (d) to maintain or change the state of supplying hot water to the radiation panel unit. Control method of a heating and cooling system. A heat source unit for supplying hot or cold water; A radiation panel unit embedded in a floor of the living room and including a bottom pipe through which hot or cold water supplied from the heat source part passes and a heat storage layer covering the floor pipe; An apparatus for controlling a cooling and heating system including an air system for supplying air in a living room, A measuring unit for acquiring indoor temperature measurement values, indoor humidity measurement values, and floor surface temperature measurement values of the living room; A storage unit for storing a dew point temperature calculated from an indoor temperature set value, an indoor temperature control deviation, a safety factor, the indoor temperature measurement value and the indoor humidity measurement value; If the indoor temperature measurement value is greater than the room temperature set value plus the room temperature control deviation, or the floor surface temperature measurement value is smaller than the dew point temperature plus the safety factor, the operating state of the air system is cooled. A calculation unit for determining an operating state of the air system as a stop state when the indoor temperature measurement value is less than or equal to the indoor temperature setting value and the floor surface temperature measurement value is greater than the dew point temperature plus a multiple of the safety factor; And a control unit for maintaining or changing the operation state of the air system by comparing the current operation state of the air system with the result determined by the operation unit. A heat source unit for supplying cold water; A radiation panel unit embedded in a floor of the living room and including a bottom pipe through which cold water supplied from the heat source part passes and a floor structure covering the floor pipe; In the method of controlling a cooling and heating system including an air system for supplying air in the living room, (a) obtaining the cold water temperature measurement, the room temperature measurement of the living room, and the floor surface temperature measurement, the floor surface temperature limit value, the heat transfer coefficient between the floor surface and the indoor air of the living room, the heat transfer coefficient between the floor structure and the cold water, Storing heat capacity of the floor structure; (b) calculating a reservation driving time that satisfies the following equation as a time taken for changing the floor surface temperature of the living room; And

- here,

, T _{F_limit} is the floor surface temperature limit,

,

, U _D is the heat transfer coefficient between the floor surface and the indoor air of the living room, U _S is the heat transfer coefficient between the floor structure and the cold water, C _F is the heat capacity, T _W is the cold water temperature measurement, T _R is the room temperature Measured value, T _F-initial is the bottom surface temperature measurement- And supplying the cold water to the radiation panel unit in advance by the calculated reservation operation time. The method of claim 12, The floor surface temperature limit value, A floor surface temperature set point of the living room, The control method of the heating and heating system using the ondol and the air system, characterized in that for storing the larger value of the dew point temperature calculated from the room temperature measurement value and the room humidity measurement value of the living room plus the safety factor. A heat source unit for supplying cold water; A radiation panel unit embedded in a floor of the living room and including a bottom pipe through which cold water supplied from the heat source part passes and a floor structure covering the floor pipe; An apparatus for controlling a cooling and heating system including an air system for supplying air in a living room, A measuring unit obtaining the cold water temperature measurement value, the indoor temperature measurement value of the living room, an indoor humidity measurement value, and a floor surface temperature measurement value; Calculated from the floor surface temperature set value of the living room, the heat transfer coefficient between the floor surface and the indoor air of the living room, the heat transfer coefficient between the floor structure and the cold water, the heat capacity of the floor structure, the safety factor, the room temperature measurement and the room humidity measurement A storage unit for storing the dew point temperature; A calculation unit for calculating a reservation driving time satisfying the following equation as a time required for the floor surface temperature of the living room to change;

- here,

, T _{F_limit} = Max (T _Fset , T _D + SF),

,

, U _D is the heat transfer coefficient between the floor surface and the indoor air of the living room, U _S is the heat transfer coefficient between the floor structure and the cold water, C _F is the heat capacity, T _Fset is the floor surface temperature set value, T _D is the dew point Temperature, SF is the safety factor, T _W is the cold water temperature measurement, T _R is the room temperature measurement, T _F-initial is the floor surface temperature measurement- And an on-dol and an air system in combination with an air system including an operation unit for supplying the cold water to the radiation panel unit in advance for the calculated reservation operation time.

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