KR100879629B1 - Cooling and heating system with middle cold accumulator for preventing heat damage of bladder type expansion tank - Google Patents

Abstract

A cooling and heating system is provided to prevent damage to a bladder type expansion tank by keeping the expansion water from directly flowing into the expansion tank. A cooling and heating system comprises a circulation pipe(10) having a heating source facility(1), a pump and a load(10a), a closed bladder type expansion tank(20) accommodating the expansion water flowing out of the circulation pipe, and an intermediate storage tank(30) preserving water as much as the amount of the expansion water flowing out through an expansion pipe(10b) and keeping the expansion water from directly flowing into the expansion tank in order to prevent thermal damage to the expansion tank.

Description

COOLING AND HEATING SYSTEM WITH MIDDLE COLD ACCUMULATOR FOR PREVENTING HEAT DAMAGE OF BLADDER TYPE EXPANSION TANK}

The present invention relates to a cooling and heating system, and more particularly, in a cooling and heating system having a diaphragm sealed expansion tank, to prevent the rubber diaphragm provided in the expansion tank from being damaged by hot or cold circulating water for cooling and heating. The present invention relates to a cooling and heating system having an intermediate storage tank capable of cushioning thermal shock between a circulation pipe and an expansion tank.

Currently, incineration plants, community energy systems (CES) or district heating and cooling by incorporating cogeneration are being activated. District heating or district heating is used to heat the heating, hot water supply, and cooling required by individual heat production facilities (oil, etc.) in a heat source facility (eg, cogeneration plant) concentrated in residential, commercial, and public customers within a city or a certain area. It is a method of supplying heat produced economically from a concentrated heat source facility through a pipe network without having a gas boiler, etc.). This district heating or district heating heat supply is as follows.

First, the district heating or district heating and heating medium produced by the heat source equipment is supplied to the customer heat exchanger chamber through the pipe network with good insulation. The heat medium supplied to the heat exchanger chamber transfers heat to the internal circulation heat medium of the customer through a separate customer heat exchanger, and is then recovered to the heat source facility. The consumer circulating water, which receives heat from the heat exchanger chamber, is supplied to each floor of each household and building. As the heat medium for district cooling or district heating, water is mainly used. Due to the characteristics of the district cooling and district cooling, water is generally heated to a high temperature (100 ° C. or more) and circulated through the pipe.

As shown in FIG. 1, the conventional air conditioning and heating system includes a circulation pipe 10 connected to a load 10a of a customer, for example, a cooling and heating device, and a pipe water on one side of the circulation pipe 10. A heat source facility (1) installed to cool, a pump installed to circulate the heated or cooled pipe water through the heat source facility (1) on one side of the circulation pipe (10), and one side of the circulation pipe (10) It is composed of an expansion tank (20) installed to accommodate the water branched to expand in accordance with the temperature.

Looking at the operation of the conventional air-conditioning system as described above, first heating the pipe water by using the heat source equipment (1), and then circulating the heated water by driving the pump (P), the transfer equipment, the circulated water The air is heated and cooled through the load 10a such as a heating and cooling device installed in the building while passing in the building along the pipe. In this case, as the temperature of the pipe water circulating in the sealed pipe increases, the pipe water expands, and the expanded pipe water expands through the expansion pipe 10b formed on one side of the circulation pipe 10. 20) and when the expansion water contracts as the temperature decreases again, the expansion water in the expansion tank 20 is sent to the circulation pipe 10 through the expansion pipe 10b and recycled.

The expansion tank 20 used in such a conventional heating and cooling system is divided into an open expansion tank and a closed expansion tank according to whether the inside of the expansion tank is open to the outside atmosphere, and the closed expansion tank has a rubber diaphragm therein. It is divided into a diaphragm expansion tank and a non-diaphragm expansion tank according to whether or not.

Conventionally, open expansion tanks in which the inside of the tank is opened to the outside atmosphere have been widely used because of low installation cost and easy supply of supplemental water, but corrosion and evaporation or overflow of pipes due to air mixing and dissolution in the pipes from the atmosphere There are disadvantages such as energy damage, high installation position, freezing concerns, and the like.

As a way of improving the disadvantages of the open expansion tank as described above, a non-diaphragm sealed expansion tank has been developed. The non-diaphragm sealed expansion tank has a structure in which the expansion amount is sucked while the pressure is changed by an air cushion in contact with the expansion water in the pressure tank. In such a non-diaphragm sealed expansion tank, air is continuously dissolved in water and consumed during use, and air is discharged out of the pipe through an air vent, so that the air in the tank disappears and water only becomes full over time. Water logging, which can't absorb the expansion water, occurs, so in most cases air compressors continue to supply air.

The diaphragm expansion tank is provided with a rubber diaphragm 22 in a sealed expansion tank. The outside of the rubber diaphragm 22 consists of an air chamber filled with air or nitrogen gas for pressure regulation in the tank, and the rubber diaphragm 22. The interior is composed of a water chamber that accommodates the pipe water (expansion water) is expanded from the circulation pipe 10 to flow out. In the case of a diaphragm expansion tank having such a rubber diaphragm 22, air or nitrogen gas is separated from the plumbing water by the rubber diaphragm 22 and is not directly contacted. There is an advantage that can significantly reduce the problem.

However, in the conventional cooling and heating system having such an expansion tank, since the expansion tank 20 is directly connected to the circulation pipe 10, the heat of the expanded pipe water (expansion water) is transferred to the expansion tank (20). It is delivered as it is. In particular, when the temperature of the expanded water is a high temperature (100 ℃ or more) in the case of the diaphragm expansion tank having a rubber diaphragm 22, there is a risk that the rubber diaphragm 22 is deformed or broken by heat. In addition, even when the temperature of the expanded water is excessively low (-5 ° C. or less), there is a fear that damage due to exceeding the limit temperature of the rubber diaphragm 22 may occur. To avoid this, when the non-diaphragm expansion tank without the rubber diaphragm 22 is used, the system becomes complicated and the installation and maintenance is required because it requires various facilities such as nitrogen gas filling and control device for pressure adjustment in the tank. Due to the high cost, a small heating and cooling system is too expensive for the size of the system, there is a disadvantage that is not economical. Therefore, there is an urgent need for an apparatus or facility that can prevent the rubber diaphragm 22 from being damaged by the heat of the expansion water while using a diaphragm expansion tank having low system installation and maintenance costs.

The present invention has been made to solve the problem of the air-conditioning system having a diaphragm expansion tank as described above, the heating and cooling system that can prevent the thermal damage of the diaphragm expansion tank by the high temperature or low temperature cooling and cooling circulation The purpose is to provide.

The objects and advantages of the present invention will be described in more detail below, and will be further embodied by the examples. Furthermore, the objects and advantages of the invention are realized by the means indicated in the claims and combinations thereof.

The heating and cooling system according to the present invention for solving the problems as described above, the conventional circulation pipe 10 having a heat source (1), a pump and a load (10a) and from one side of the circulation pipe (10) A cooling and heating system connected to the branched expansion pipe (10b) to receive the expansion water is expanded from the circulation pipe (10) and outflow, but includes a sealed diaphragm expansion tank having a rubber diaphragm 22 therein, wherein Between the circulation pipe (10) and the expansion tank, from the circulation pipe (10) by always receiving and storing an amount of water corresponding to the amount of expansion water that is expanded from the circulation pipe (10) and flows out through the expansion pipe (10b) An intermediate storage tank is provided to prevent the outflowing water from flowing directly into the expansion tank to prevent thermal damage of the expansion tank.

Here, the intermediate storage tank 30 is connected to the circulation pipe 10 by the expansion pipe (10b), and the expansion tank (20) is connected to the cold water transfer pipe (34), when the expansion pipe (10b) Is connected to the upper side of the intermediate storage tank 30 and the cold water transfer pipe 34 is connected to the lower side of the intermediate storage tank 30, while the cooling pipe 10b is lower side of the intermediate storage tank 30 during cooling Is connected to the cold water transfer pipe 34 is preferably connected to the upper side of the intermediate storage tank (30).

In addition, the intermediate storage tank is provided with a plurality of partitions at predetermined intervals so that the inner space is separated by forming a multi-layered layer in the vertical direction, each side of the partition is formed with a through-hole so that water between the layers can pass through, the through-hole It is preferable that the horizontal positions of the through-holes formed in each of the diaphragms are spaced apart from each other in a zigzag form in order to delay the time that the water moves through each layer so that water is not mixed as much as possible.

The apparatus may further include automatic temperature control means for automatically maintaining the temperature of the water within a safe range in response to the temperature change of the water stored in the intermediate storage tank 30 during heating. The temperature control means may include the intermediate storage tank 30. A temperature sensor 36 which is stored inside and senses a temperature of water which is transported out through the cold water transfer pipe 34; The solenoid valve 52 for selectively discharging the water stored in the intermediate storage tank 30 to the outside as installed and opened in the drain pipe 50 connected to the lower portion of the intermediate storage tank 30; A level transmitter 24 for sensing the water level of the expansion tank 20; Receives the temperature detection signal value from the temperature sensor 36 and compares it with the pre-stored high and low temperature limits, and receives the water level detection signal value from the level transmitter 24 and compares it with the pre-stored water level reference value. When it is determined that the temperature sensing signal value transmitted from the control unit 36 is greater than or equal to the pre-stored high temperature limit value and the level sensing signal value transmitted from the level transmitter 24 provided in the expansion tank 20 is less than the previously stored level reference value, It includes a control unit 100 for controlling to discharge the water stored in the intermediate storage tank 30 to the outside by opening the solenoid valve 52 provided in the lower drain pipe 50 of the storage tank 30 It is preferable.

Here, the supplementary water pump is connected to the cold water transfer pipe 34 connected to the intermediate storage tank, and is driven according to the control command of the control unit to compensate for the lack of water stored in the intermediate storage tank and pressurize and supply the supplemental water. It is preferable to further include.

In addition, the air conditioner further includes automatic temperature control means for automatically maintaining the temperature of the water within a safe range in response to the temperature change of the water stored in the intermediate storage tank 30, wherein the temperature control means, the intermediate storage tank ( 30) a temperature sensor 36 which is stored inside and senses the temperature of the water which is transferred out through the cold water transfer pipe 34; A heater 38 for temporarily heating water in the intermediate storage tank 30; The control unit 100 further controls to operate the heater 38 when it is determined that the temperature detection signal value of the water in the intermediate storage tank 30 sensed by the temperature sensor 36 is less than or equal to a pre-stored low temperature limit value. It is desirable to.

Meanwhile, between the circulation pipe 10 and the expansion pipe 10b, the cold water stored in the intermediate storage tank flows into the circulation pipe 10 or the pipe of the circulation pipe 10 while the pipe water circulates along the circulation pipe 10. It is preferable that a heat trap is further provided to prevent the water from flowing into the intermediate storage tank to generate heat.

According to the air-conditioning system according to the present invention as described above, it is possible to prevent the expansion water flowing out of the circulation pipe to flow out into the expansion tank directly, and to maintain the temperature of the water flowing into the expansion tank in a safe range, so that The expansion water at low temperature has an excellent effect of preventing the diaphragm expansion tank from being damaged by heat.

Hereinafter, with reference to the accompanying drawings and preferred embodiments with respect to the configuration and operation of the cooling and heating system having an intermediate storage tank for preventing thermal damage of the diaphragm expansion tank according to the present invention will be described in detail.

Figure 2a is a connection diagram of the intermediate storage tank during heating in the heating and cooling system according to a preferred embodiment of the present invention, Figure 2b is connected to the intermediate storage tank for cooling in the air conditioning system according to a preferred embodiment of the present invention A schematic is shown. As shown in Figure 2a and 2b, the heating and cooling system according to an embodiment of the present invention is a conventional circulation pipe 10 having a heat source (1), a pump and a load (10a) and the circulation pipe ( It is connected to the expansion pipe (10b) branching from one side of 10) accommodates the pipe water expanded from the circulation pipe 10, but basically includes a sealed diaphragm expansion tank 20 having a rubber diaphragm 22 therein And, the intermediate storage tank 30 is further provided between the circulation pipe 10 and the expansion tank 20.

The intermediate storage tank 30 is usually expanded from the circulation pipe 10 to always receive and store the amount of water corresponding to the amount of expansion water flowing out through the expansion pipe (10b), from the circulation pipe (10) It is a device for buffering the outflowing expansion water does not directly enter the expansion tank (20).

The intermediate storage tank 30 is connected to the circulation pipe 10 by the expansion pipe 10b, and is connected to the expansion tank 20 by the cold water transfer pipe 34, as shown in Figure 2a during heating Expansion tube (10b) is connected to the upper side of the intermediate storage tank 30, cold water transfer pipe 34 is connected to the lower side of the intermediate storage tank (30). On the other hand, during cooling, as shown in FIG. 2B, the expansion pipe 10b is connected to the lower side of the intermediate storage tank 30, and the cold water transfer pipe 34 is connected to the upper side of the intermediate storage tank 30. It follows the principle that the hot water floats on the light and the cold water is heavy and located below, and when this is contradicted, the mixing action occurs in the intermediate storage tank 30, so that the temperature of the water stored in the intermediate storage tank 30 is maintained substantially constant. It is not desirable because it will not let you.

Through this configuration, the expansion water flowing out from the circulation pipe 10 flows into the intermediate storage tank 30. In this case, when the expansion water is introduced into the intermediate storage tank 30, the intermediate storage tank 30 is always filled with cold water, and thus the intermediate storage tank 30 is introduced through the expansion pipe 10b among the water stored in the intermediate storage tank 30. The amount of water flows out along the cold water transfer pipe 34 connected to the intermediate storage tank 30 is transferred to the expansion tank (20).

Here, the storage capacity of the intermediate storage tank 30 may be determined by measuring or predicting the maximum capacity or the average capacity of the expansion water flowing out of the circulation pipe 10 in advance, and the intermediate storage tank 30. Cold water stored in) is a water in a temperature range in which the rubber diaphragm 22 provided in the expansion tank 20 is not damaged as a relative meaning, and is preferably in the range of about 60 ° C. at room temperature.

Through such a configuration, when the expanded water of the high temperature (100 ℃ or more) from the circulation pipe 10 flows out into the intermediate storage tank 30 through the expansion pipe (10b), stored in the intermediate storage tank (30) The water which has been used is transferred to the expansion tank 20 along the cold water transfer pipe 34. That is, the intermediate storage tank 30 does not directly transfer the expansion water that is expanded and circulated in the circulation pipe 10 to the expansion tank 20, but by flowing water that is stored by itself into the expansion tank 20. It is to prevent the thermal damage of the expansion tank 20 due to the inflow of high temperature expansion water. Accordingly, the diaphragm expansion tank 20 can be safely used even in a small air conditioning system using mid-temperature or higher temperature hot water.

On the other hand, the intermediate storage tank 30 is preferably made of a stratified structure. Here, the stratified structure is defined as a structure that maintains a constant bed without mixing water of different temperatures when water of high temperature (or low temperature) is introduced into a tank in which water of low temperature (or high temperature) is stored. In short, convection of water is prevented, so that the structure of the tank is divided into multiple layers so that water at different temperatures does not mix with each other. As such, in order to prevent the temperature of the water flowing into the expansion tank 20 from becoming high due to the thermal equilibrium between the cold water and the high-temperature expansion water stored in the intermediate storage tank 30, the intermediate storage tank 30 is It is preferable to have a temporary layered structure.

2A and 2B schematically show an intermediate storage tank 30 having such a stratified structure. As shown, the intermediate storage tank 30 is provided with a plurality of diaphragms 32 at predetermined intervals so that the inner space is separated by forming a multi-stage layer in the vertical direction, each of the diaphragm 32 on one side Through holes are formed to allow water to pass through. In the through hole, the horizontal positions of the through holes formed in each of the diaphragms 32 are preferably spaced apart in a zigzag form in order to delay the time that the water moves through each layer so that the water does not mix as much as possible. And, it is preferable that two or three diaphragms 32 are formed.

In addition, as shown in Figure 2a and 2b, between the circulation pipe 10 and the expansion pipe (10b) the cold water stored in the intermediate storage tank 30 while the pipe water is circulated along the circulation pipe 10 circulates A thermal trap 40 may be additionally provided to prevent the movement of heat by flowing into the pipe 10 or the pipe water of the circulation pipe 10 to the intermediate storage tank 30.

On the other hand, Figure 3a is a block diagram of the facility during heating of the heating and cooling system according to another embodiment of the present invention, Figure 3b is a block diagram of the cooling facility of the cooling and heating system according to another embodiment of the present invention. As shown in Figure 3a and 3b, the heating and cooling system according to another embodiment of the present invention is provided with an intermediate storage tank 30 between the circulation pipe 10 and the expansion tank 20 as in the first embodiment In response to the temperature change of the water stored in the intermediate storage tank 30, automatic temperature control means for automatically maintaining the temperature of the water within the safety range is provided. Such automatic temperature control means includes a temperature sensor 36, a solenoid valve 52, a level transmitter 24, a replenishment water pump 64 and a controller 100 as shown in FIG. As shown in FIG. 3B, a temperature sensor 36, a heater 38, and a controller 100 are included.

The temperature sensor 36 is provided in the intermediate storage tank 30, the temperature stored in the intermediate storage tank 30 to sense the temperature of the water to be transported out through the cold water transfer pipe 34 and the temperature to the controller 100 to be described later Send the detection signal value.

The solenoid valve 52 is installed in the drain pipe 50 connected to the lower portion of the intermediate storage tank 30 and opened and closed by the control command of the controller 100 to be described later to store the water stored in the intermediate storage tank 30. It selectively discharges to the outside.

The level transmitter 24 detects the level of water stored in the rubber diaphragm 22 provided in the expansion tank 20, that is, the water chamber, and transmits the level detection signal value to the controller 100 to be described later.

The replenishment water pump 64 is a pump which is driven according to a control command of the controller 100 to replenish water when the water stored in the intermediate storage tank 30 is insufficient, and supplies the supplementary water under pressure. It is provided in the replenishment water pipe (60) extending from the cold water transfer pipe 34 connected to (30), the check valve 62 for preventing the back flow of the replenishment water is provided on the discharge side of the replenishment water pump (64).

The heater 38 is operated according to a control command of the controller 100, and when the temperature of the water stored in the intermediate storage tank 30 is excessively low, it performs a function of heating the water to a safe temperature range. The heater 38 is required only when the temperature of the pipe water circulating in the circulation pipe 10 is low and is unnecessary when heating.

This temperature control means is automatically controlled by the controller 100. The control unit 100 is a part for controlling the overall operation of the above-described components, and consists of a memory and a microcontroller described above, the temperature sensor 36, the solenoid valve 52, the level transmitter 24, the supplemental water pump 64, a drive program for operating and controlling the heaters 38 and various data are stored in the memory in advance, and these programs and data, and the detection signal received from the temperature sensor 36 and the level transmitter 24 Based on the value, the microcontroller automatically controls the solenoid valve 52, the replenishment water pump 64, and the heater 38 to maintain the temperature of the water stored in the intermediate storage tank 30 in a safe range.

Specifically, the control unit 100 receives the temperature detection signal value from the temperature sensor 36 installed in the intermediate storage tank 30, and receives the water level detection signal value from the level transmitter 24 installed in the expansion tank 20. Receive it and store it temporarily. The control unit 100 has previously stored a high temperature limit value and a low temperature limit value as a limit value of the safe temperature range of the water stored in the intermediate storage tank 30, and the water stored in the intermediate storage tank 30 is expanded to the expansion tank 20. The water level reference value is stored in advance as the water level value of the expansion tank 20 at the time when both tanks are in dynamic equilibrium with each other without being transported.

Referring to FIG. 3A, when heating, the controller 100 compares a temperature detection signal value transmitted from the temperature sensor 36 with a pre-stored high temperature limit value and a low temperature limit value, and transmits the value from the level transmitter 24. The level detection signal value and the previously stored level reference value are compared with each other. As a result of the comparison, when it is determined that the temperature detection signal value is within a normal range, that is, between a high temperature limit value and a low temperature limit value, the water is normally operated as usual and the water stored in the intermediate storage tank 30 when the circulation pipe 10 is expanded. The expansion tank 20 is to be transferred.

On the other hand, when it is determined that the temperature sensing signal value transmitted from the temperature sensor 36 is equal to or higher than the high temperature limit value previously stored in the controller 100, the water stored in the intermediate storage tank 30 is transferred to the expansion tank 20. It may be necessary to prevent flow or to lower the temperature. Therefore, in this case, the water level of the expansion tank 20 should be sensed to check whether there is a possibility that water is transferred from the intermediate storage tank 30 to the expansion tank 20. When the level detection signal value transmitted from the level transmitter 24 provided in the expansion tank 20 is equal to or greater than the previously stored level reference value, that is, when the expansion tank 20 is full to form a high water level, Since there is no room for water to be transferred from the storage tank 30 to the expansion tank 20, even if the water stored in the intermediate storage tank 30 is high temperature, there is no risk of damaging the rubber diaphragm 22 of the expansion tank 20. No action is required.

However, when the temperature detection signal value transmitted from the temperature sensor 36 is greater than or equal to the previously stored high temperature limit value, and the water level detection signal value transmitted from the level transmitter 24 provided in the expansion tank 20 is less than the previously stored water level reference value. That is, when the expansion tank 20 is not filled to the proper level to form a low water level, high temperature water stored in the intermediate storage tank 30 flows into the expansion tank 20 to form a rubber diaphragm 22. There is a probability of damaging it. Accordingly, the controller 100 opens the solenoid valve 52 closing the drain pipe 50 connected to the lower portion of the intermediate storage tank 30 to externally store the water stored in the intermediate storage tank 30. To be discharged. In this way, hot water does not flow into the expansion tank 20.

In addition, when the drainage is performed by opening the solenoid valve 52, water is insufficient in the intermediate storage tank 30, in order to fill it, the controller 100 closes the solenoid valve 52 and replenishes the filling. The water pump 64 is started. Accordingly, the replenishment water in the safe temperature range is filled in the intermediate storage tank 30 so that the temperature of the water in the intermediate storage tank 30 is readjusted to the safe temperature range.

Referring to FIG. 3B, in the case of cooling, when it is determined that the temperature detection signal value transmitted from the temperature sensor 36 is equal to or less than a pre-stored low temperature limit value, the controller 100 includes a heater 38 provided in the intermediate storage tank 30. ) Is temporarily operated to maintain the safe temperature range by heating the water stored in the intermediate storage tank (30).

Since the operation as described above is automatically controlled in real time according to the control command of the control unit 100 based on the signal values transmitted in real time from the temperature sensor 36 and the level transmitter 24, the intermediate storage tank 30 The temperature of the water stored therein is always adjusted to a safe range, thereby preventing the thermal damage of the expansion tank (20).

So far, the present invention has been described in detail with reference to embodiments of the present invention. However, the scope of the present invention is not limited thereto, and the present invention is intended to include practically equivalent ranges.

1 is a block diagram of a conventional conventional heating and cooling system,

Figure 2a is a connection diagram of the intermediate storage tank during heating in the heating and cooling system according to an embodiment of the present invention,

Figure 2b is a connection diagram of the intermediate storage tank during cooling in the cooling and heating system according to an embodiment of the present invention,

Figure 3a is a block diagram of the facility during heating of the heating and cooling system according to another embodiment of the present invention,

Figure 3b is a block diagram of the facility during the cooling of the air conditioning system according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: heat source equipment 10: circulation piping

10a: load 10b: expansion tube

20: expansion tank 22: rubber diaphragm

24: level transmitter 30: intermediate storage tank

32: plate 34: cold water transfer pipe

36: temperature sensor 38: heater

40: heat trap 50: drain pipe

52: solenoid valve 60: replenishment water pipe

62: check valve 64: make-up water pump

100: control unit

Claims (7)

It is connected to a conventional circulation pipe 10 having a heat source facility 1, a pump and a load 10a, and an expansion pipe 10b branching from one side of the circulation pipe 10 to expand from the circulation pipe 10. In the air-conditioning system including a closed-type diaphragm expansion tank 20 to accommodate the expansion water is discharged and has a rubber diaphragm 22 therein, Between the circulation pipe 10 and the expansion tank 20, the circulation pipe in accordance with the storage of the amount of water corresponding to the amount of expansion water is expanded from the circulation pipe 10 to flow through the expansion pipe (10b) at all times Cooling and heating system characterized in that the intermediate storage tank (30) for preventing thermal damage of the expansion tank (20) is provided by preventing the expansion water flowing out from the 10 directly to the expansion tank (20). The method of claim 1, The intermediate storage tank 30 is connected to the circulation pipe 10 by the expansion pipe 10b, and is connected to the expansion tank 20 by the cold water transfer pipe 34, when the expansion pipe 10b is the heating It is connected to the upper side of the intermediate storage tank 30 and the cold water transfer pipe 34 is connected to the lower side of the intermediate storage tank 30, while the cooling pipe 10b is connected to the lower side of the intermediate storage tank 30 during cooling And cold water transfer pipe 34 is a cooling and heating system, characterized in that connected to the upper side of the intermediate storage tank (30). The method according to claim 1 or 2, The intermediate storage tank 30 is provided with a plurality of diaphragms 32 at predetermined intervals so that the inner space is separated by forming a plurality of layers in the vertical direction, so that the interlayer water can pass through one side of each diaphragm 32. Through-holes are formed, the through-holes are air-conditioned, characterized in that the horizontal position of the through-holes formed in each of the diaphragm 32 is spaced apart in a zigzag form in order to delay the time the water moves through each layer so that the water is not mixed as much as possible system. The method according to claim 1 or 2, In addition to the temperature change of the water stored in the intermediate storage tank 30 when heating further includes automatic temperature control means for automatically maintaining the temperature of the water within a safe range, the temperature control means, A temperature sensor 36 stored in the intermediate storage tank 30 and sensing a temperature of water which is transferred out through the cold water transfer pipe 34; The solenoid valve 52 for selectively discharging the water stored in the intermediate storage tank 30 to the outside as installed and opened in the drain pipe 50 connected to the lower portion of the intermediate storage tank 30; A level transmitter 24 for sensing the water level of the expansion tank 20; Receives the temperature detection signal value from the temperature sensor 36 and compares it with the pre-stored high and low temperature limits, and receives the water level detection signal value from the level transmitter 24 and compares it with the pre-stored water level reference value. When it is determined that the temperature detection signal value transmitted from (36) is greater than or equal to the pre-stored high temperature limit value and the water level detection signal value transmitted from the level transmitter 24 provided in the expansion tank 20 is less than the previously stored water level reference value, It includes a control unit 100 for controlling to discharge the water stored in the intermediate storage tank 30 to the outside by opening the solenoid valve 52 provided in the lower drain pipe (50) of the intermediate storage tank (30) Air conditioning system characterized in that. The method of claim 4, wherein It is provided in the replenishment water pipe (60) extending from the cold water transfer pipe (34) connected to the intermediate storage tank (30), if the lack of water stored in the intermediate storage tank (30) of the control unit 100 of the Cooling and heating system characterized in that it further comprises a replenishment water pump (64) which is driven in accordance with the control command for supplying pressurized water. The method according to claim 1 or 2, When cooling, the temperature control means further includes automatic temperature control means for automatically maintaining the temperature of the water within a safe range in response to the temperature change of the water stored in the intermediate storage tank (30), A temperature sensor 36 which is stored in the intermediate storage tank 30 and senses a temperature of water which is transferred out through the cold water transfer pipe 34; A heater 38 for temporarily heating water in the intermediate storage tank 30; The control unit 100 further controls to operate the heater 38 when it is determined that the temperature detection signal value of the water in the intermediate storage tank 30 sensed by the temperature sensor 36 is less than or equal to a pre-stored low temperature limit value. Air conditioning system characterized in that. The method according to claim 1 or 2, Cold water stored in the intermediate storage tank 30 is introduced into the circulation pipe 10 or the circulation pipe 10 between the circulation pipe 10 and the expansion pipe 10b while the water is circulated along the circulation pipe 10. The heating and cooling system, characterized in that the heat trap 40 is further provided to prevent the pipe water flows into the intermediate storage tank (30) to prevent the movement of heat.

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