KR102129840B1 - An energy performance test apparatus and test method which can control accurately the schedules of variable flow rate and variable calorie following the real usage pattern - Google Patents

Abstract

The present invention is a water heater energy performance test apparatus capable of accurately realizing a given water discharge amount and a target heat amount during a certain use period by reflecting a real use pattern, in order to implement a real use pattern, the use patterns and test procedures recorded in the database A piping component for controlling and supplying the flow rate and the amount of heat to and from the sample of the water heater; In order to control the flow rate and the amount of heat, a temperature sensor, a water flow meter, and a water flow meter installed on the input/output means of the water heater sample are included, and the difference in the flow rate to and from the water heater sample and the bypass flow rate can be observed and controlled. Thermal flow rate sensor; And the actual use pattern can be stored, recalled, or edited, linked to the final actual use pattern, control of the piping component control valve and the supply of the energy source supplied to the sample of the water heater, and setting conditions It is possible to control the temperature and water supply pressure of the constant temperature water tank according to the temperature, the temperature of the piping component and the constant temperature water tank, the temperature sensor of the pressure sensor and the air-conditioning room operation and data acquisition and supervise data acquisition and calculate the amount of heat output from the water heater sample The control unit includes: a flow control of the piping component through the control valve to follow the actual use pattern provided from the database based on the heat flow rate information transmitted from the heat flow rate detection unit, and the It is characterized by controlling the supply power of the sample of the water heater.

Description

Water heater energy performance test device that can control variable flow rate and variable heat schedule according to the actual usage pattern and energy performance test method using the same USAGE PATTERN}

The present invention relates to a water heater energy performance test apparatus capable of controlling a variable flow rate and a variable heat schedule according to a practical use pattern and an energy performance test method using the same, more specifically, various energy sources (electricity, gas, oil, solar heat, air heat, Geothermal heat, etc.) and various types (storage type, instantaneous type, heat pump type, hybrid type, etc.) of the water heater to understand the energy performance of the existing steady state as well as the existing steady state (actual use pattern). It is composed of a main pipe, a bypass pipe, and a control valve in order to accurately monitor, control, and supply the flow rate and heat amount to and from the water heater according to the usage pattern and test order recorded in the database. And it is possible to clearly know the operation status of the sample according to the data condition by judging the temperature data in and out, and also improves the method for measuring the volume of the tank capacity of the water heater, and consists of a database and a control calculation unit considering the ease of use of the tester. Water heater energy performance test apparatus and energy performance test method using the same.

In general, a water heater is a device that supplies water above a certain temperature for use as a shower, toilet, sanitary, and kitchen use in a bathroom, toilet, kitchen, etc. As an energy source, electricity, gas, oil, and solar heat , Air heat, geothermal heat, etc. are used.

Gas is mainly used in Korea, but the environment of energy sources varies by country. In particular, in Korea, where a gas boiler is used, a combination product of a gas boiler and a water heater (combi-boiler) or a single gas water heater product is frequently used.

In the form of a product, a storage tank is provided to store intermittently warmed water in a storage tank, and then discharged whenever necessary, and the instantaneous heating of a large capacity energy source only when hot water is needed without a storage tank. There is a form.

In addition, there is a heat pump type water heater that uses air heat and geothermal energy by applying a refrigerant compression cycle, there is also a water heater that uses solar heat, and an independent water heater that uses one heat source such as electricity and gas, as well as other energy sources (solar heat , Geothermal, etc.)

A gas operated water heater according to the prior art generally includes a cylindrical or parallelepiped container in which a tank containing a gas burner and water to be heated is located, and the burner generally occupies the lower portion of the container and the tank from the top. It is connected to a heat exchanger placed across and heats the water contained therein, and the container is generally formed as a double wall, and the space between them is arranged with the insulating material necessary to prevent heat loss by obviously lowering the energy efficiency of the water heater. do.

In particular, a polymer insulation, for example, polyurethane foam, is inserted in the interspace portion adjacent to the tank, and a glass wool or rock wool is used as an insulating material in the portion adjacent to the burner position.

There are various test devices and test methods for verifying the energy performance of these water heater products, and mainly in Korea, the test devices and test methods for verifying the energy performance of gas products are mainly focused. Test equipment and test methods have been implemented to view the rated performance in a state where the supplied water and hot water are constantly discharged (normal state).

However, it is necessary to judge not only the energy performance of the water heater in the normal state, but also the energy performance when the water heater is operated according to the actual usage pattern. To this end, some international standards provide guidelines at a basic level.

As shown in Fig. 4, the test device lay-out according to the international standard consists of simple intake, outflow and bypass piping, one outflow control valve, and one bypass control valve. It is supposed to simply discharge at the rear end of the valve.

In addition, each valve is simply controlled by taking only the flow (bypass or outflow) from one pipe, and it is not interlocked with each other, so it is possible to precisely implement the outflow quantity and target heat quantity according to the actual usage pattern or There is a limit to accurately grasp the driving condition.

Background art of the present invention is disclosed in Republic of Korea Patent Publication No. 10-2005-0004272 (published on January 12, 2005, the name of the invention: gas-operated water heater).

Normally, the test apparatus and test method for viewing the rated capacity in the steady state of operation of a water heater consist of a simple, inflow/exit piping and a flow meter, and an in/out thermometer, but the actual water heater product is not continuously operated. Since a variable load that operates only when necessary is common, there is a problem in that it is difficult to grasp the energy performance of a water heater operating according to a practical use pattern.

In order to solve the above problems, the piping configuration, valve configuration, and control logic are specified, for example, after the flow rate of 3LPM at 7 o'clock, the discharge of 105 Wh of heat, the intermediate atmosphere, the condition of 7:15 of 6LPM, and the discharge of 1820 Wh of heat. If it is necessary to perform a performance test according to the actual use pattern, it is impossible to precisely control the step shape in the process of supplying 3LPM, then stopping, and then supplying 6LPM with the configuration of the simple one-path I/O piping.

Even if the water obtained through the bypass configuration as shown in FIG. 4 is disposed in the middle atmosphere state and is disposed sideways, it is necessary to stabilize in the state of passing the product (that is, considering the frictional load of the product) in the outgoing state after waiting anyway. Overshoot and vibration damping until the flow rate and pressure supplied to the sample are stabilized are inevitable.

In addition, there is a need to recycle by returning to the water tank, if necessary, without discarding the bypassed supply water. To solve this problem, more complex piping configuration, valve configuration, and control logic are needed.

In order to supply the inlet according to the actual use pattern of the water heater, a water tank (a constant temperature water tank) capable of adjusting the inlet temperature, pressure, and flow rate as shown in FIG. 2 is required, and in the water tank, cooling, heating, and inverter pumps are generally used. Etc. are provided.

The characteristic curve of the inverter pump can move up and down the characteristic curve of the pump according to the output of the inverter, from the curve at the minimum operation to the curve at the maximum 100% operation.

On the other hand, the load curve (system curve) is a curve determined by the system's piping configuration, friction resistance, and sample resistance, and the cloud point of the pump is determined at the point where the pump characteristic curve meets the load curve. Point, 300kPa, 6LPM)

However, it is necessary to lower the flow rate according to the actual water heater usage pattern (eg Op.2 point, 300kPa, 3LPM). In this case, the load curve should be adjusted as a dotted line, and for this, the opening degree is controlled at the suction end of the inverter pump. A suction valve is required.

Therefore, whenever the inlet pressure and flow rate conditions change, the speed output value% of the inverter pump obtained through PID control and the opening output value% of the intake valve are stabilized at the same time, and only the desired supply pressure and flow rate test conditions are obtained. .

Usage pattern of the water heater In the example of Table 1, the target water discharge quantity (Qtap), the water discharge flow rate (f), and the heat calculation start temperature (Tm) for each time zone according to the water heater capacity (..M,L,XL..) ), the minimum target reaching temperature (Tp), etc. are specified, and in this case, it is necessary to change the flow rate in a step shape according to the specified time (eg, XL: 3 => 6=> 3=> 10.. .) If the inverter speed output value and the intake valve opening output value% are adjusted for each time period through the PID control mentioned above, overshoot and vibration damping by PID control will occur at the beginning of the flow rate change, causing unstable pressure. And a flow rate.

Therefore, in order to use the actual use pattern of the water heater more precisely, it is required to improve it.

In addition, there is a need to measure the capacity of the storage water tank before the energy performance test according to the actual usage pattern.For example, it is measured manually by measuring the weight of the product before filling the water and measuring the weight of the water filled product. When measuring the capacity, it is physically cumbersome, and there is a problem in that the exact filling degree must be judged visually or empirically.

In addition, considering the user convenience of this test apparatus and test method, it is necessary to judge the logic of the sample's standby state, water filling state, stable water discharge state, unstable water discharge state, whether or not the sample heater is operating, leak and reverse flow conditions, In the energy performance test according to the actual use pattern, it is necessary to load or modify the edited actual use pattern, and to determine the NG status of each item for the final result.

Therefore, there is a need to improve this.

In the present invention, in the present invention, to solve these problems, through the addition of a flow meter, the addition of a three-way valve, the specification of the piping configuration, the specification of a control logic, the addition of test methods and test steps for realization of a stable practical use pattern, etc. It is an object of the present invention to provide a water heater energy performance test apparatus capable of controlling a variable flow rate and a variable heat schedule according to a practical use pattern and an energy performance test method using the same.

In addition, the present invention provides a water heater energy performance test apparatus that can be automatically and precisely measured when a complex piping configuration, valve configuration, control logic test apparatus and test method are used, and an energy performance test method using the same. have.

In addition, the present invention, in order to accurately implement the actual use pattern, according to the use pattern and test order recorded in the database, the main pipe, bypass pipe to precisely observe, control, and supply the flow rate and heat flow into and out of the water heater , The control valve is composed of a complex, and by adding a flow meter, it is possible to clearly know the operation status of the sample according to the data status of the flow meter and thermometer, and precedes the energy performance test according to the actual use pattern (in the case of the low-floor type) water heater The purpose of the present invention is to improve the method for measuring the volume of the tank capacity, to provide a database and a control calculation unit that can be composed of a manual energy performance test apparatus and an energy performance test method using the same.

The present invention, in a water heater energy performance test apparatus capable of realizing a given usage amount and target heat during a certain usage period by reflecting an actual usage pattern, according to usage patterns and test procedures recorded in a database in order to implement an actual usage pattern A piping component for controlling and supplying the flow rate and heat amount to and from the water heater sample; In order to control the flow rate and the amount of heat, a temperature sensor, a water flow meter, and a water flow meter installed on the input/output means of the water heater sample are included, and the difference in the flow rate to and from the water heater sample and the bypass flow rate can be observed and controlled. Thermal flow rate sensor; And the actual use pattern can be stored, recalled, or edited, linked to the final actual use pattern, control of the piping component control valve and the supply of the energy source supplied to the sample of the water heater, and setting conditions It is possible to control the temperature and the water supply pressure of the constant temperature water tank according to the temperature, the temperature of the piping component and the constant temperature water tank, the temperature sensor of the pressure sensor and the air-conditioning room operation and data acquisition and supervise data acquisition and calculate the amount of heat output from the water heater sample The control unit includes: a flow control of the piping component through the control valve to follow the actual use pattern provided from the database based on the heat flow rate information transmitted from the heat flow rate detection unit, and the It is characterized by controlling the supply power of the sample of the water heater.
In addition, the piping configuration portion of the present invention is installed between the constant temperature water tank and the sample of the water heater, the main pipe providing a flow path for circulating water between the constant temperature water tank and the sample of the water heater; A bypass pipe branching from the main pipe and bypassing and circulating the water supplied along the main pipe to the constant temperature water tank when the heat amount of water discharged from the water heater sample exceeds a set value; And being installed in the main pipe or the bypass pipe, controlling whether water is supplied to the sample of the water heater, controlling a bypass operation for bypassing water from the main pipe, and controlling the operation of discharging water outside the main pipe. It characterized in that it comprises a control valve that can.
In addition, the control valve of the present invention, the first pipe is installed in the connection portion of the discharge pipe and the bypass pipe, the first three to control the operation of the water bypassed along the bypass pipe is circulated to the constant temperature water tank Way valve; And a second three-way valve installed on the connection portion of the discharge pipe and the drain pipe to supply hot water by discharging hot water discharged to the constant temperature water tank along the discharge pipe to the outside of the main pipe. When water flows through, the first three-way valve is controlled to open in the direction of the water heater sample and the constant temperature water tank, and in the standby state where no water heater sample is used according to the actual usage pattern, the first three-way valve is the The first three-way valve is controlled to close in the direction of the sample of the water heater, and when the heat capacity of the sample of the water heater is large, the first three-way valve can be discharged to the outside without being returned to the constant temperature water tank to reduce the heat load of the constant temperature water tank. And it is characterized in that it is opened to the water heater sample direction, the second three-way valve is controlled to open in the external direction with the water heater sample.
In addition, the calorific flow rate detection unit of the present invention is installed in the water supply pipe of the main pipe for supplying water to the water heater sample, the temperature and flow rate of the water supplied to the water heater sample to detect the temperature and flow rate of the water supply and water meter; And an outlet thermometer and an outlet flow meter installed in the discharge pipe through which water is discharged from the sample of the water heater, and supplying data by sensing the temperature and flow rate of the discharged water from the sample of the heater and supplying data. According to the water supply pipe of the sample of the water heater, the data state measured by a flow meter and a thermometer installed in the discharge pipe through which water is discharged from the sample of the water heater, and the judgment value and control logic input to the control unit,
(FMin, FMout) = (0, 0): Standby state, (Fin, 0): Water filling state
(Fin = Fout) Stable outflow condition,
(Fin> Fout) Unstable water or leak
(Fin = Fout, Tin = Tout), water heater water sample outflow
(Fin = Fout, Tin <Tout), water heater sample normal extraction
(Fout <0) Backflow
Since it is determined as the above formula, it is characterized in that it is possible to determine the standby state, the water filling state, the stable water discharge state, the unstable water discharge state, the presence or absence of the water heater sample, the leakage, and the reverse flow state of the water heater sample.
In addition, the control unit can call a previously stored actual use pattern, or the user can modify and apply it, and control the flow of water through the valve control according to the final use pattern, test environment (water temperature, air conditioning environment, product) Electricity, gas supply) control, energy performance and thermal efficiency calculation, and compare with the water supply flow rate, water flow rate, water flow temperature, and standby time for each time zone targeted in the pre-stored actual use pattern, according to the judgment criteria input in advance. If it is not satisfactory on the basis, the tester outputs NG for each item for easy cause analysis, and in the case of NG that can be solved during repetition, the tester further includes a control logic that can be repeated and processed as many times as specified in advance. It is characterized by.
In addition, the present invention, the variable flow rate variable heat capacity schedule control according to the actual use pattern in the storage water heater, comprising: (a) measuring the tank capacity of the water heater sample; (b) filling a water heater sample with a constant temperature water tank connected to a main pipe; (c) a heat-up step of driving the sample of the water heater and heating the water supplied from the constant temperature water tank to a set temperature; (d) The output% output value for the number of revolutions of the inverter pump of the constant temperature water tank and the output for the inlet valve openness of the inverter pump, which are necessary to implement the conditions of each flow rate and pressure in the actual use pattern simulation step. % Automatic search step of searching for output value; (e) a database storage step of storing output% output values searched in the automatic search of the output values in the database for each water heater for each test so that they can be loaded and applied without re-discovery if necessary; A real-life pattern simulation step of actually applying the output% output values searched in the auto search step of the output values made in steps (d) and (e); And (f) characterized in that it comprises a real-life pattern simulation step driven under the conditions of actual use of the water heater sample according to the data provided from the control unit.
In addition, in the step (a) of the present invention, a load cell for weighing is additionally installed on the sample holder of the water heater, and the weight of the sample of the water heater is measured using a load cell before being obtained in step (a), and after obtaining When stabilization is determined (F _in = F _out , T _in = T _out ), after stabilization, a method of measuring the weight of the sample of the water heater and converting the difference between the two weights into volumes based on the density by the average temperature do.
In addition, the step (a) of the present invention, without addition of a load cell, after stabilization (F _in = F _out , T _in = T _out ), the volume of the difference between the accumulated amount of the inlet-side flow meter and the accumulated amount of the outlet-side flow meter It characterized in that it comprises a method for calculating.
In addition, the step (a) of the present invention, after measuring the weight in the state of placing the weighing pedestal and the water heater sample directly on the scale, add a flexible pipe between the water heater sample and the main pipe of the inlet and outlet Circulate the water until it is stabilized by connecting (F _in = F _out , T _in = T _out ), and after stabilization, separate the piping and measure the weight of the water heater sample and the pedestal in the state filled with water to measure the difference between the weights before and after. Characterized in that using a method for converting the volume by using.
In addition, the present invention, the instantaneous water heater in which a variable flow rate variable heat schedule control is performed according to a practical use pattern, comprising: (a) a water circulation step performed when power is applied to a product; And (b) a real-use pattern simulation step driven under conditions of actual use of the water heater sample according to data provided from a control unit, between the water circulation step and the real-use pattern simulation step, before the water circulation step. , Output% output value for the number of revolutions of the inverter pump and output% output value for the inlet valve openness of the inverter pump are automatically searched in advance to realize the conditions of each flow and pressure in the simulation pattern of the actual use. It characterized in that it further comprises an automatic search step (Auto search) the output value.

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A water heater energy performance test apparatus capable of controlling variable flow rate and variable heat schedule according to a practical use pattern according to the present invention and an energy performance test method using the same are provided with a piping component for controlling the flow rate and heat flow to and from the water heater, and sample input and output. The heat flow rate detection unit that can accurately observe and control the difference in the flow rate and the flow rate being bypassed, the energy supplied to the control valve and sample of the piping component, the temperature and water supply pressure of the water tank, the piping section and the water tank The temperature and pressure sensor and temperature and humidity sensor operation and data acquisition of the air-conditioning room govern the operation and data acquisition and calculate the amount of heat output from the sample, and the control and calculation section, and the main and bypass flow control through the control valve and the sample supply power automatically Since the control database and the control calculation unit are provided, it is possible to precisely test the energy performance of the water heater under a practical use pattern, which has the advantage of effectively grasping the energy performance of the water heater.

In addition, the energy performance test apparatus and the energy performance test method using the water heater capable of controlling the variable flow rate and the variable heat according to the actual use pattern according to the present invention, when water flows through the water heater according to the actual use pattern, the two-way valve is closed. The first three-way valve opens in the direction of the sample and the water tank, and according to the actual use pattern, the two-way valve opens in the standby state where the water heater is not used, and the first three-way valve closes in the direction of the sample, and when the water heating capacity of the water heater is large In order to reduce the heat load of the water tank, it has an advantage of providing a test apparatus simulating various cases since it includes a piping configuration part including a second three-way valve that is discharged to the outside without being returned to the water tank.

In addition, according to the practical use pattern according to the present invention, a water heater energy performance test apparatus capable of controlling a variable flow rate and a variable heat schedule, and an energy performance test method using the same, include a flow meter and a thermometer installed in the main pipe before the sample acquisition side bypass, and sample extraction Since it is equipped with a flowmeter and a thermometer installed on the side main pipe, it has the advantage of determining the sample's atmospheric state, water filling state, stable water discharge state, unstable water discharge state, whether the sample heater is normal, leaks, and reverse flow.

In addition, according to the actual use pattern according to the present invention, the energy performance test apparatus and the energy performance test method using the water heater capable of controlling the variable flow rate and the calorific value schedule are additionally installed with a load cell for weighing on the sample holder, so that before and after the manual water introduction. Instead of measuring the weight of, there is an advantage in that the volume of the volume can be automatically measured using the piping configuration of the above 1 and the flowmeter and thermometer of the above 3 as it is.

1 is a conceptual diagram showing the difference between a test apparatus according to an embodiment of the present invention and a known test method.
Figure 2 is a graph showing the configuration and flow rate of the test apparatus according to an embodiment of the present invention.
Figure 3 is a graph showing the flow rate versus time of the test apparatus according to an embodiment of the present invention.
4 is a basic test apparatus known in the test standard.

Hereinafter, an embodiment of a water heater energy performance test apparatus capable of controlling a variable flow rate and a variable calorie schedule according to a practical use pattern according to the present invention and an energy performance test method using the same will be described with reference to the accompanying drawings.

In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice.

Therefore, the definition of these terms should be made based on the contents throughout the specification.

1 is a conceptual diagram showing a difference between a test apparatus according to an embodiment of the present invention and a conventionally known test method, and FIG. 2 is a graph showing the configuration and flow rate of a test apparatus according to an embodiment of the present invention, Figure 3 is a graph showing the flow rate versus time of the test apparatus according to an embodiment of the present invention.

1 to 3, the energy performance test apparatus for a water heater capable of controlling a variable flow rate and a variable amount of heat according to a practical use pattern according to an embodiment of the present invention reflects a practical use pattern, and a given amount of water discharged during a certain period of use In a water heater energy performance test device that can accurately implement the target heat quantity, a piping component that controls and supplies the flow rate and heat quantity to and from the water heater according to the use pattern and test order recorded in the database to implement the actual use pattern (12, 14, 16, 18), and a water heater sample including a temperature sensor, a water flow meter 32, and a water flow meter 34 installed in the input/output means of the water heater sample 50 to accurately control the flow rate and heat amount ( 50) The flow rate detection unit (32, 32a, 34, 34a) that can observe and control the difference between the flow rate to and from the flow rate and the bypass flow rate, and can be saved, loaded or edited by specifying the actual usage pattern Characterized in that and interlocked with the final practical use pattern, it is possible to automatically control the supply of energy supplied to the piping components (12, 14, 16, 18) control valve and the water heater sample (50), It is possible to control the temperature and the water supply pressure of the constant temperature water tank 10, and the temperature and pressure sensors of the piping unit and the constant temperature water tank 10 and the temperature and humidity sensor operation and data acquisition of the air conditioning room are supervised and the water heater sample 50 is discharged. And a control unit comprising a database for calculating the amount of heat and a control calculation unit.

The test apparatus of this embodiment, the main pipe (12, 14) consisting of a water supply pipe (12) and a discharge pipe (14) between the constant temperature water tank (10) and the water heater sample (50) is installed is water provided in the constant temperature water tank (10) It is heated while passing through the water heater sample 50 and circulated to the constant temperature water tank 10.

Bypass piping 16 is branched to the water supply pipe 12 and connected to the discharge pipe 14, so that water that is not to be supplied to the water heater sample 50 depending on whether the control valve is opened or closed is provided along the discharge pipe 14 to the constant temperature water tank 10 As it is circulated to, the supply of water may not be made, which may be made when the water filled in the water heater sample 50 exceeds a set value.

The control unit of this embodiment, the main piping (12, 14) through the control valve to follow the actual use pattern provided from the database based on the heat flow rate information transmitted from the heat flow rate detection unit (32, 32a, 34, 34a) , Controls the flow of the bypass piping 16 and controls the water heater sample 50 supply power.

The piping components 12, 14, 16, and 18 are installed between the constant temperature water tank 10 and the water heater sample 50, and provide a flow path through which water is circulated between the constant temperature water tank 10 and the water heater sample 50. If the amount of water branched from the main pipe (12, 14) and the main pipe (12, 14), and the amount of fresh water in the water heater sample (50) exceeds a set value, the water supplied along the main pipe (12, 14) is a constant temperature water tank (10). Bypass pipe to circulate by circulating and installed in the main pipe (12, 14) or bypass pipe (16), and controls the supply of water supplied to the water heater sample (50), the main pipe (12, 14) to control the bypass operation to bypass the water, and includes a control valve that can control the operation of discharging water to the outside of the main pipe (12, 14).

In addition, the control valve of the present embodiment is installed on the connecting portion of the discharge pipe 14 and the bypass pipe 16 of the main pipes 12 and 14, and the water bypassed along the bypass pipe 16 is a constant temperature water tank 10 ), the first three-way valve 72 for regulating the work circulated, and the drain pipe to discharge hot water discharged to the constant temperature water tank 10 along the discharge pipe 14 outside the main pipes 12 and 14 It includes a second three-way valve (74) installed on (18).

Therefore, when water flows through the water heater sample 50 according to the actual use pattern, the first three-way valve 72 is controlled to open in the direction of the water heater sample 50 and the constant temperature water tank 10.

In addition, according to the actual use pattern, the first three-way valve 72 is controlled to close in the direction of the water heater sample 50 in a standby state in which the water heater sample 50 is not used.

In the case where the heat capacity of the water heater sample 50 is large, the first three-way valve 72 is provided in the constant temperature water tank 10 so that it can flow out without being returned to the constant temperature water tank 10 in order to reduce the heat load of the constant temperature water tank 10. ) And the water heater sample 50 are opened, and the second three-way valve 74 is controlled to open in the direction of the water heater sample 50 and the drain pipe 18.

The calorific flow rate detection units 32, 32a, 34, and 34a of this embodiment are installed in the water supply pipe 12, and the temperature and flow rate of the water supplied to the water heater sample 50 are detected to supply data. And an inflow water meter 32, an outflow water temperature meter 34a and an outflow water flow meter 34 installed in the discharge pipe 14 and sensing the temperature and flow rate of water discharged from the water heater sample 50 to supply data.

It is determined according to Equation 1 according to the data state measured by the flow meter and the thermometer installed in the water supply pipe 12 and the discharge pipe 14 of the water heater sample 50, and the judgment values and control logic input to the database and the control calculation unit.

[Equation 1]

(FMin, FMout) = (0, 0): Standby state, (Fin, 0): Water filling state

(Fin = Fout) Stable outflow condition,

(Fin> Fout) Unstable water or leak

(Fin = Fout, Tin = Tout), water heater water sample outflow

(Fin = Fout, Tin <Tout), water heater sample normal extraction

(Fout <0) Backflow

The control unit of the present embodiment determines the standby state, the water filling state, the stable water discharge state, the unstable water discharge state, the presence or absence of the water heater sample 50, the leakage and the backflow state of the water heater sample 50 because it is determined as in Equation 1 above. It becomes possible.

The database and control calculation section of the control unit can recall the actual usage patterns stored in advance, or modify and apply them by the user, and control the flow of water through valve control according to the final usage pattern, various test environments (water temperature pressure, air conditioning Environment, product electricity, gas and other energy supply) control, energy performance and thermal efficiency calculation, and in advance compared with the actual flow pattern, the target water flow rate, water flow, water temperature, and standby time If it is not satisfied based on the input criteria, the tester outputs NG for each item for easy cause analysis, and in case of NG that can be solved when repetitively repeated, the tester can repeat and process the number of repetitions specified in advance. Further logic.

Therefore, errors that can be easily corrected by repetition can be automatically corrected by the control logic.

The water heater load patterns shown in Table 1 are data showing the target heat amount, flow rate, and temperature condition for each time zone of the discharged water to implement a practical use pattern.

For example, when the time is 07:00, it means that the discharged water is discharged at a flow rate of 3 (l/min) until the heat amount of the discharged water reaches 0.105 (kWh). The target heat quantity, flow rate, and temperature conditions for each time zone were displayed according to the capacity (M, L, XL) of the tank installed in ).

Therefore, it is possible to test the energy performance of the sample 50 of the water heater while implementing the target heat amount, flow rate, and temperature for each time zone shown in Table 1 by the experiment apparatus of this embodiment.

Looking at the energy performance test method using the energy performance test apparatus for a water heater sample 50 capable of controlling a variable flow rate and variable heat schedule according to a practical use pattern according to an embodiment of the present invention configured as described above is as follows.

According to an embodiment of the present invention, an energy performance test method using an energy performance test apparatus for a water heater sample 50 capable of controlling a variable flow rate variable calorie schedule according to a practical use pattern has a variable flow variable calorie schedule control according to a practical use pattern. In the storage-type water heater sample (50) made, measuring the tank capacity of the water heater sample (50), and filling step of filling water in the constant temperature water tank (10) connected to the main pipe (12, 14) to the water heater sample (50) and , A heat-up step of driving the water heater sample 50 to heat the water supplied from the constant temperature water tank 10 to a set temperature, and the water heater sample 50 and the constant temperature water tank 10 by driving the water heater sample 50. It includes a stabilization step in which the temperature of the circulating water reaches a set temperature, and a real-life pattern simulation step driven under conditions in which the water heater sample 50 is actually used according to data provided from the control unit.

F_out, T_in

T_out) 안정 후 온수기 시료(50)의 무게를 측정하여 두 무게의 차이를 평균온도에 의한 밀도에 의하여 부피로 환산하는 방법을 포함한다.In the step of measuring the tank capacity, a load cell for weighing is additionally installed on the water heater sample 50 cradle, and the weight of the water heater sample 50 is measured using a load cell prior to acquisition, and stabilization is determined after acquisition (F _in

F _out , T _in

T _out ) After stabilization, a method of measuring the weight of the water heater sample 50 and converting the difference between the two weights into a volume according to the density by the average temperature.

F_out, T_in

T_out), 입수측 유량계의 적산량과 출수측 유량계의 적산량의 차이로 부피를 계산하는 방법으로 이루어질 수 있다.In addition, the step of measuring the tank capacity of the water heater sample 50 is stabilized (F _in

F _out , T _in

T _out ), a method of calculating the volume by the difference between the accumulated amount of the inlet-side flow meter and the accumulated amount of the outlet-side flow meter.

F_out, T_in

T_out) 때까지 물을 순환시키고 안정화 후, 배관을 분리하여 물이 채워진 상태에서의 온수기 시료(50)와 받침대의 무게를 측정하여 전후의 무게차이를 이용하여 부피를 환산하는 방법으로 이루어질 수 있다.In addition, the step of measuring the tank capacity, after measuring the weight in the state of placing the weighing pedestal and the water heater sample 50 directly on the scale, between the water heater sample 50 and the inlet and outlet main pipes 12 and 14 The flexible pipe can be additionally connected to stabilize (F _in

F _out , T _in

After circulating and stabilizing the water until T _out ), the piping can be separated to measure the weight of the water heater sample 50 and the pedestal in a state filled with water and convert the volume using the difference in weight before and after. .

In addition, the present embodiment, the filling step, the heat-up step, between the filling step and the heat-up step, or before the filling step, the number of revolutions of the inverter pump required to implement the conditions of each flow rate and pressure in the actual pattern simulation step The output value automatic search step for searching the output% output value for and the output% output value for the inlet valve openness of the inverter pump, and the output% output values searched for in the automatic search step of the output value for each test, water heater sample (50 Also includes a database storage step to store in each database and load it if necessary, so that it can be applied without re-discovery, and a real-world pattern simulation step of actually applying the output% output values searched in the auto search step. do.

As another embodiment of the present invention, an experimental apparatus and an experimental method may be applied to the instantaneous water heater sample 50, and the test method according to another embodiment is an instantaneous water heater in which a variable flow rate variable heat schedule is controlled according to a practical use pattern. The sample 50 includes a water circulation step performed in a normal case when power is applied to the product, and a practical use pattern simulation step driven under the conditions of actually using the water heater sample 50 according to data provided from the control unit. do.

In addition, between the water circulation step and the actual use pattern simulation step of the present embodiment, before the water circulation step, the output% output value for the number of revolutions of the inverter pump and the inverter required to implement the conditions of each flow rate and pressure in the actual use pattern simulation step and the inverter The automatic search step (Auto search) of the output value automatically searches in advance the output% output value for the inlet valve openness of the pump.

Thus, in order to grasp the energy performance of samples of water heaters of various energy sources (electricity, gas, oil, solar heat, air heat, geothermal heat, etc.) and various types (storage type, instantaneous type, heat pump type, hybrid type, etc.) In order to be able to test not only the (steady state) but also the energy performance under the actual usage pattern, the main piping and the bi can be precisely monitored, controlled, and supplied to the water heater sample according to the usage pattern and test order recorded in the database. It is composed of a pass pipe and a control valve, and by adding a flow meter, it is possible to clearly determine the operation state of the sample according to the data state by judging the input/output flow rate and the input/output temperature data in a complex manner. It is possible to provide an energy performance test apparatus for a water heater sample and an energy performance test method using the same, which is composed of a database considering the ease of use of the tester and a control calculation unit.

The present invention has been described with reference to one embodiment shown in the drawings, but this is only exemplary, and those skilled in the art to which the art pertains may have various modifications and other equivalent embodiments. Will understand

In addition, the energy performance test apparatus for air conditioners and the method for testing the energy performance of air conditioners (air conditioners or heat pumps) according to the temperature conditions of each region using them has been described as an example, but this is only an example, and the energy performance test apparatus for air conditioners and the use thereof The test apparatus of the present invention and a test method using the same may be used for products other than the energy performance test method of the air conditioner according to the temperature condition of each region.

Therefore, the true technical protection scope of the present invention should be defined by the claims below.

10: constant temperature water tank 12: supply pipe
14: discharge pipe 16: bypass pipe
18: drain pipe 32: water flow meter
32a: Water temperature meter 34: Water flow meter
34a: water temperature meter 50: water heater sample
72: first three-way valve 74: second three-way valve

Claims (10)

In a water heater energy performance test apparatus that can realize a given amount of water withdrawal and target heat during a certain period of use by reflecting the actual usage pattern,
A piping configuration unit for controlling and supplying the flow rate and the amount of heat to and from the water heater sample according to the use pattern and test order recorded in the database to implement the actual use pattern;
In order to control the flow rate and the amount of heat, a temperature sensor, an inlet flow meter, and an outflow flow meter installed in the inlet/outlet means of the water heater sample can be observed and controlled, and the difference in the flow rate to and from the water heater sample and the bypassed flow rate can be observed and controlled. Thermal flow rate sensor; And
The actual use pattern can be specified to be saved, recalled, or edited, linked to the final actual use pattern, and the supply of energy sources supplied to the control valve of the piping component and the water heater sample can be adjusted, and the setting conditions of the water supply can be adjusted. It is possible to control the temperature and water supply pressure of the constant temperature water tank according to the temperature, pressure sensor and the temperature and humidity sensor operation and data acquisition of the air conditioning room and the piping component and the constant temperature water tank to control the data acquisition and calculate the heat output of the water heater sample It includes a control unit,
The control unit controls the flow of the piping component through the control valve and supplies power to the sample of the water heater through the control valve to follow the actual use pattern provided from the database based on the heat flow rate information transmitted from the heat flow rate sensor. A water heater energy performance test device capable of controlling a variable flow rate and variable heat schedule according to a practical use pattern characterized by controlling.
According to claim 1, The piping component,
A main pipe installed between the constant temperature water tank and the sample of the water heater, and providing a flow path through which water is circulated between the constant temperature water tank and the sample of the water heater;
A bypass pipe branching from the main pipe and bypassing and circulating the water supplied along the main pipe to the constant temperature water tank when the heat amount of water discharged from the water heater sample exceeds a set value; And
It is installed in the main pipe or the bypass pipe, it controls the supply of water supplied to the sample of the water heater, it controls the bypass operation for bypassing water from the main pipe, and it can control the operation of discharging water out of the main pipe. A water heater energy performance test device capable of controlling a variable flow rate and variable heat schedule according to a practical use pattern, which includes a control valve.
According to claim 2, The control valve,
A first three-way valve that is installed on the discharge pipe of the main pipe and the connecting portion of the bypass pipe and controls the operation of the water bypassed along the bypass pipe to be circulated to the constant temperature water tank; And
And a second three-way valve installed at a connection portion between the discharge pipe and the drain pipe to supply hot water by discharging hot water discharged to the constant temperature water tank along the discharge pipe to the outside of the main pipe,
When water flows through the water heater sample according to the actual use pattern, the first three-way valve is controlled to open in the direction of the water heater sample and the constant temperature water tank,
According to the actual use pattern, the first three-way valve is controlled to close in the direction of the water heater sample in a standby state in which no water heater sample is used,
When the heat capacity of the sample of the water heater is large, the first three-way valve is opened in the direction of the sample of the constant temperature water tank and the water heater so that it can flow out without being returned to the constant temperature water tank to reduce the heat load of the constant temperature water tank. The second three-way valve is a water heater energy performance test device capable of controlling a variable flow rate and a variable flow rate schedule according to a practical use pattern, characterized in that it is controlled to open in the outside direction with the sample of the water heater.
The method of claim 3, wherein the heat flow rate sensor,
An inlet thermometer and an inlet flow meter installed in a water supply pipe of the main pipe supplying water to the sample of the water heater, and supplying data by sensing temperature and flow rate of water supplied to the sample of the water heater; And
It is installed in the discharge pipe from which the water is discharged from the sample of the water heater, and includes an outflow thermometer and an outflow flow meter that detects the temperature and flow rate of the water discharged from the water heater sample and supplies data.
According to the water supply pipe of the water heater sample supplying water to the water heater sample, the data state measured by a flow meter and a thermometer installed in the discharge pipe through which water is discharged from the water heater sample, and a judgment value and control logic input to the controller ,
(FMin, FMout) = (0, 0): Standby state, (Fin, 0): Water filling state
(Fin = Fout) Stable outflow condition,
(Fin> Fout) Unstable water or leak
(Fin = Fout, Tin = Tout), water heater water sample outflow
(Fin = Fout, Tin <Tout), water heater sample normal extraction
(Fout <0) Backflow
Since it is determined as the above formula, it is possible to determine the standby state, the water filling state, the stable water discharge state, the unstable water discharge state of the water heater sample, the presence or absence of the water heater sample, the leakage, and the reverse flow condition. Energy performance test device for water heater with variable flow rate schedule control.
According to claim 4,
The control unit,
Recall the actual usage pattern saved in advance, or modify and apply it by the user, and control the flow of water and control the test environment (intake temperature pressure, air conditioning environment, product electricity, gas supply) through valve control according to the final usage pattern , Perform energy performance and thermal efficiency calculation,
In case that it is not satisfactory based on the judgment criteria entered in advance compared to the water flow rate, water flow rate, water flow temperature, and standby time for each time zone targeted in the actual usage pattern stored in advance, each item is analyzed so that the tester can easily analyze the cause. Output NG stars,
In the case of NG that can be solved during repetition, the water heater energy performance test capable of controlling the variable flow rate and variable heat schedule according to the actual usage pattern, further comprising a control logic that can be repeated and processed as many times as the repetition number specified in advance by the tester. Device.
In the storage type water heater in which a variable flow rate variable heat schedule control is performed according to a practical use pattern,
(A) measuring the tank capacity of the sample of the water heater;
(b) filling a water heater sample with a constant temperature water tank connected to a main pipe;
(c) a heat-up step of driving the sample of the water heater and heating the water supplied from the constant temperature water tank to a set temperature;
(d) The output% output value for the number of revolutions of the inverter pump of the constant temperature water tank and the output for the inlet valve openness of the inverter pump, which are necessary to implement the conditions of each flow rate and pressure in the actual use pattern simulation step. % Automatic search step of searching for output value;
(e) a database storage step of storing output% output values searched in the automatic search of the output values in the database for each water heater for each test so that they can be loaded and applied without re-discovery if necessary;
A real-life pattern simulation step of actually applying the output% output values searched in the auto search step of the output values made in steps (d) and (e); And
(f) a water heater energy performance test capable of controlling a variable flow rate and a variable heat schedule according to a practical use pattern, characterized by including a practical use pattern simulation step driven under conditions of actual use of the water heater sample according to data provided from a controller. Energy performance test method using a device.
The method of claim 6,
In the step (a), a load cell for weight measurement is additionally installed on the sample holder of the water heater, and the weight of the sample of the water heater is measured using a load cell prior to the acquisition in step (a), and if stabilization is determined after the acquisition (( F _in = F _out , T _in = T _out ) After stabilization, measure the weight of the water heater sample and convert the difference between the two weights into volumes by density by the average temperature. Energy performance test method using a water heater energy performance tester that can control variable flow rate schedule according to variable flow rate.
The method of claim 6,
In step (a), after stabilization (F _in = F _out , T _in = T _out ), without adding a load cell, a method of calculating a volume by the difference between the accumulated amount of the inlet-side flow meter and the accumulated amount of the outlet-side flow meter is calculated. Energy performance test method using a water heater energy performance test apparatus capable of controlling variable flow rate and variable heat schedule according to a practical use pattern comprising a.
The method of claim 6,
In step (a), after measuring the weight while placing the weighing pedestal and the sample of the water heater directly on the scale, it is to be stabilized by additionally connecting a flexible pipe between the sample of the water heater and the main pipe of the I/O ( After circulating and stabilizing water until F _in = F _out , T _in = T _out ), separate the piping and measure the weight of the water heater sample and the pedestal in the water-filled state to determine the volume using the difference in weight before and after. An energy performance test method using a water heater energy performance test device capable of precisely controlling a variable flow rate and a variable calorie schedule according to a practical use pattern characterized by using a conversion method.
In the instantaneous water heater in which a variable flow rate variable calorie schedule control is performed according to a practical use pattern,
(a) a water circulation step performed when power is applied to the product; And
(b) real life pattern simulation step driven under the conditions of actual use of the water heater sample according to data provided from the control unit; includes,
Between the water circulation step and the actual use pattern simulation step, before the water circulation step, the output% output value for the number of revolutions of the inverter pump required to realize the conditions of each flow rate and pressure in the actual use pattern simulation step and the output of the inverter pump. A water heater energy capable of controlling a variable flow rate and a variable heat schedule according to a practical use pattern, further comprising an automatic search step (Auto search), which automatically searches in advance an output% output value for an inlet valve openness. Energy performance test method using a performance tester.

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