JP2017044388A - Performance evaluation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform performance evaluation more easily as compared with that of the prior art.SOLUTION: A performance evaluation device 100 comprises upstream side thermocouples 103 arranged at an upstream side of an outdoor heat exchanger 23 to measure a temperature of air blown to the outdoor heat exchanger 23 as an upstream average temperature; a downstream side thermocouple 104 to measure a temperature of air discharged out of an outdoor device 20; an air velocity sensor 105 for measuring an air velocity of air discharged out of the outdoor device 20; and a heat exchanger radiation amount calculating part 110 for weighting a temperature difference between an upstream average temperature and a downstream average temperature for every grid on the basis of an air velocity ratio for every grid, and calculating radiation amount of the outdoor heat exchanger 23 on the basis of wind speed measured by the air velocity sensor 105.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a performance evaluation apparatus that performs performance evaluation of an air conditioner that air-conditions a room.

  A conventional performance evaluation apparatus for evaluating the performance of an air conditioner has an upstream temperature sensor arranged on the upstream side and a downstream temperature sensor on the downstream side for each grid in which a plurality of outdoor unit heat exchangers (condensers) are partitioned. And a wind speed sensor.

  Then, based on the upstream temperature measured by the upstream temperature sensor, the downstream temperature measured by the downstream temperature sensor, and the wind speed measured by the wind speed sensor, the heat release amount for each grid is derived, and the release of each grid is released. The amount of heat is integrated to derive the amount of heat released from the heat exchanger (for example, Non-Patent Document 1).

Tatsuo Nobe, Yusuke Haga, Hokuto Nakamura, Kotaro Tanaka, Masayuki Kiguchi, Performance Evaluation Method for Multi-Package Air Conditioner by Probe Insertion Method, Architectural Institute of Japan Environmental Studies, Vol.76, No.668, 927-933 October 2011

  In the above-described performance evaluation apparatus, a sheath thermocouple is used as the downstream temperature sensor, and the tip portion (joining point) is arranged on the downstream side from the upstream side of the heat exchanger so as to pass through the gaps between the fins of the heat exchanger. It was like that. However, the pitch between the fins of the heat exchanger is becoming narrower with higher performance, and the diameter of the sheathed thermocouple needs to be reduced accordingly, making it difficult to use a ready-made sheathed thermocouple. It was. In addition, it is difficult to install the sheath thermocouple having a small diameter through the gap between the fins.

  The present invention has been made in view of such problems, and an object thereof is to provide a performance evaluation apparatus capable of performing performance evaluation more easily than in the past.

  In order to solve the above-mentioned problems, the performance evaluation device of the present invention is arranged on the upstream side of a heat exchanger provided in an outdoor unit of an air conditioner, and the average temperature of air blown to the heat exchanger is increased upstream. An upstream temperature sensor that measures the average temperature, a downstream temperature sensor that measures the average temperature of the air discharged from the outdoor unit as a downstream average temperature, a wind speed sensor that measures the wind speed of the air discharged from the outdoor unit, The upstream average temperature measured by the upstream temperature sensor based on the wind speed ratio between the wind speed on the upstream side of the grid and the wind speed measured by the wind speed sensor in each grid that divides the heat exchanger into a plurality of grids. And the temperature difference with the downstream average temperature measured by the downstream temperature sensor is weighted for each grid, the weighted temperature difference, and the wind speed sensor Based on the speed, and a heat exchanger heat radiation amount deriving unit that derives the heat radiation amount of the heat exchanger.

  Moreover, the said upstream temperature sensor is arrange | positioned for every said grid in the said heat exchanger, The said upstream average temperature is good in the upstream average temperature for every grid measured by the said upstream temperature sensor being a value averaged.

  In addition, the upstream temperature sensor is a thermocouple in which a pair of lead wires made of different metals are joined at joint points, and the joint points are arranged for each grid in the heat exchanger, The lengths of the lead wires made of at least the same metal respectively joined to the joint points are the same, and each lead wire has one end joined to one of the joint points and the other end made of another same metal. The other end of the lead wire is preferably coupled.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the performance evaluation apparatus which can perform a performance evaluation easily compared with the past.

It is a figure for demonstrating the structure of the performance evaluation system concerning embodiment. (A) is a figure which shows arrangement | positioning of an upstream thermocouple, a downstream thermocouple, and a wind speed sensor. (B) is a figure which shows arrangement | positioning of the junction of an upstream thermocouple.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(Performance evaluation system 1)
FIG. 1 is a diagram for explaining a configuration of a performance evaluation system 1 according to the present embodiment. As shown in FIG. 1, the performance evaluation system 1 is installed in a facility such as a building or a school, and includes a performance evaluation device 100 that evaluates the performance of a GHP (gas heat pump air conditioner) 10 that cools and heats the air in the facility. . Although the GHP 10 can perform cooling and heating, the performance evaluation system 1 of the present invention performs performance evaluation of the GHP 10 during cooling operation. A description of the heating operation is omitted. Further, in FIG. 1, the flow of the refrigerant during the cooling operation is indicated by a solid line arrow.

  The GHP 10 includes an outdoor unit 20 installed on the rooftop of a facility, and an indoor unit 30 installed inside the facility. The outdoor unit 20 includes a gas engine 21, a compressor 22, an outdoor unit heat exchanger 23, an exhaust gas heat exchanger 24, a radiator 25, an outdoor unit fan 26, an outdoor unit motor 27, a GHP control unit 28, and a housing 29. Is done. In the GHP 10, a gas engine 21, a compressor 22, an outdoor unit heat exchanger 23, an exhaust gas heat exchanger 24, a radiator 25, an outdoor unit fan 26, an outdoor unit motor 27, and a GHP control unit 28 are accommodated in a housing 29. .

  The indoor unit 30 includes an indoor unit heat exchanger 31 that exchanges heat between indoor air and a refrigerant, an indoor unit fan 32 that sends indoor air to the indoor unit heat exchanger 31 to promote heat exchange, and an indoor unit fan An indoor unit motor 33 that rotationally drives 32 is included.

  The GHP 10 includes a refrigerant circulation system including a refrigerant pipe 41 that circulates a refrigerant between the outdoor unit 20 and the indoor unit 30, a four-way valve 42 that switches a circulation direction of the refrigerant, and an expansion valve 43 that expands the refrigerant, A cooling water circulation system including a cooling water pipe 51 for circulating cooling water in the machine 20 is provided.

  In the refrigerant circulation system during the cooling operation, the outlet of the compressor 22 and the outdoor unit heat exchanger 23 are connected by a refrigerant pipe 41 via a four-way valve 42. Further, the outdoor unit heat exchanger 23 and the indoor unit heat exchanger 31 are connected by a refrigerant pipe 41 via an expansion valve 43. The indoor unit heat exchanger 31 and the inlet of the compressor 22 are connected by a refrigerant pipe 41 via a four-way valve 42.

  In the cooling water circulation system during the cooling operation, the gas engine 21, the exhaust gas heat exchanger 24, and the radiator 25 are connected by a cooling water pipe 51.

  The gas engine 21 burns fuel gas (city gas or the like) to generate rotational power, and the compressor 22 is rotated by the generated rotational power. The compressor 22 is rotationally driven by the rotational power of the gas engine 21, compresses the refrigerant flowing through the refrigerant pipe 41, and sends it to the outdoor unit heat exchanger 23. The outdoor unit heat exchanger 23 is disposed along an air inlet 29 a provided in the housing 29, and air blown into the housing 29 from the outside by the outdoor unit fan 26 and refrigerant flowing into the outdoor unit heat exchanger 23. To exchange heat and cool the refrigerant. The refrigerant that has passed through the outdoor unit heat exchanger 23 flows into the expansion valve 43 through the refrigerant pipe 41, is expanded by the expansion valve 43, and then passes through the refrigerant pipe 41 to the indoor unit heat exchanger 31 of the indoor unit 30. Flow into.

  The refrigerant flowing into the indoor unit heat exchanger 31 is heated by exchanging heat with the air blown into the indoor unit 30 by the indoor unit fan 32, and then the outdoor unit through the four-way valve 42 by the refrigerant pipe 41. 20 compressor 22 flows. In this way, in the GHP 10, the refrigerant circulates in the refrigerant pipe 41, and the indoor unit heat exchanger 31 cools the air in the room where the indoor unit 30 is installed.

  The exhaust gas heat exchanger 24 cools the exhaust gas discharged from the gas engine 21 and discharges it to the outside. The radiator 25 exchanges heat between the cooling water circulating through the cooling water pipe 51 and the air blown into the housing 29 by the outdoor unit fan 26 to cool the cooling water.

  The outdoor unit fan 26 is disposed in the vicinity of an air outlet 29b provided in the housing 29, is driven to rotate by an outdoor unit motor 27, and passes from the air inlet 29a to the air outlet 29b via the outdoor unit heat exchanger 23 and the radiator 25. By blowing air, air is sent to the outdoor unit heat exchanger 23 and the radiator 25 to promote heat exchange.

  The GHP control unit 28 is configured by a semiconductor integrated circuit including a CPU (Central Processing Unit), and controls the entire GHP 10 (for example, the gas engine 21, the outdoor unit motor 27, the indoor unit motor 33, etc.).

  The indoor unit fan 32 is rotationally driven by the indoor unit motor 33, sends air to the indoor unit heat exchanger 31 to promote heat exchange, and blows the air cooled by the indoor unit heat exchanger 31 into the room.

  The performance evaluation apparatus 100 includes a performance evaluation unit 101, a data logger 102, an upstream thermocouple 103, a downstream thermocouple 104, and a wind speed sensor 105. The performance evaluation unit 101 is composed of a semiconductor integrated circuit including a CPU (Central Processing Unit), and serves as a heat exchanger heat release deriving unit 110, an outdoor unit production heat deriving unit 112, and a COP (Coefficient Of Performance) deriving unit 114. Function.

  The data logger 102 is connected to the performance evaluation unit 101 and is connected to the upstream thermocouple 103, the downstream thermocouple 104, and the wind speed sensor 105, and the upstream average temperature measured by the upstream thermocouple 103 and the downstream thermocouple 104. In addition, the downstream average temperature is collected and stored, and the wind speed measured by the wind speed sensor 105 is collected and stored.

  2A is a diagram illustrating the arrangement of the upstream thermocouple 103, the downstream thermocouple 104, and the wind speed sensor 105, and FIG. 2B is a diagram illustrating the arrangement of the junction points 120 of the upstream thermocouple 103. . In FIG. 2A, for convenience of explanation, a part of the first thermocouple wire 122 and the second thermocouple wire 124 of the upstream thermocouple 103 is omitted.

  As shown in FIG. 2A, the upstream thermocouple 103 includes a plurality of (18 in the present embodiment) first thermocouple wires 122 and second thermocouple wires 124 made of different metals, and a first thermocouple. A first lead wire 126 made of the same metal as the pair wire 122 and a second lead wire 128 made of the same metal as the second thermocouple wire 124 are provided.

  Further, the junction 120 of the first thermocouple wire 122 and the second thermocouple wire 124 is spaced apart from the side face of the outdoor unit heat exchanger 23 facing the air inlet 29a by a predetermined distance, as shown in FIG. As described above, the outdoor unit heat exchanger 23 is arranged on each grid 160 (160a to 160i) obtained by dividing the side face facing the air inlet 29a into nine equal parts. The grid 160 and the number of joint points 120 arranged in each grid 160 will be described in detail later.

  Further, the lengths of the first thermocouple wires 122 joined to the joint points 120 (the lengths from the joint points 120 to the first joint points 130) are all the same, and all the first thermocouple wires 122 at the first joint points 130 are the same. One thermocouple wire 122 is coupled to the first lead 126. One end of the first lead wire 126 is joined to the first thermocouple wire 122 joined to each joining point 120, and the other end of the first lead wire 126 is connected to the data logger 102.

  Similarly, the lengths of the second thermocouple wires 124 joined to the respective joint points 120 (the length from the joint point 120 to the second joint point 132) are all the same, and all the second thermocouple wires 124 at the second joint point 132 are the same. Two thermocouple wires 124 are coupled to the second lead 128. One end of the second lead wire 128 is joined together with a second thermocouple wire 124 joined to each joint point 120, and the other end of the second lead wire 128 is connected to the data logger 102.

  In this way, by making the lengths of the first thermocouple wire 122 and the second thermocouple wire 124 joined to each joint point 120 the same for each of the first thermocouple wire 122 and the second thermocouple wire 124. The resistance can be the same. As a result, the upstream thermocouple 103 can measure the average temperature at each junction 120, that is, the average temperature upstream of the outdoor unit heat exchanger 23 (hereinafter also referred to as upstream average temperature).

  The downstream thermocouple 104 includes a plurality of (four in the present embodiment) first thermocouple wires 142 and second thermocouple wires 144 made of different metals, and first thermocouple wires 142 made of the same metal. One lead wire 146 and a second lead wire 148 made of the same metal as the second thermocouple wire 144 are provided.

  The junction 140 of the first thermocouple wire 142 and the second thermocouple wire 144 is disposed at a predetermined distance from the air outlet 29 b of the housing 29. Further, the lengths of the first thermocouple wires 142 joined to the respective joint points 140 (the lengths from the respective joint points 140 to the first joint points 150) are all the same, and all the first thermocouple wires 142 are joined at the first joint points 150. One thermocouple wire 142 is coupled to the first lead 146. One end of the first lead wire 146 is coupled to the first thermocouple wire 142 joined to each joint point 140, and the other end of the first lead wire 146 is connected to the data logger 102.

  Similarly, the lengths of the second thermocouple wires 144 joined to the respective joint points 140 (the lengths from the respective joint points 140 to the second joint points 152) are all the same, and all of the lengths at the second joint points 152 are all. A second thermocouple wire 144 is coupled to the second lead 148. One end of the second lead wire 148 is joined together with the second thermocouple wire 144 joined to each joint point 140, and the other end of the second lead wire 148 is connected to the data logger 102.

  In this way, by making the lengths of the first thermocouple wire 142 and the second thermocouple wire 144 joined to each joint point 140 the same, the first thermocouple wire 142 and the second thermocouple wire 144 respectively The resistance can be the same. Thereby, in the downstream thermocouple 104, the average temperature at each junction 140, that is, the average temperature of the air discharged from the housing 29 (hereinafter also referred to as the downstream average temperature) can be measured. The downstream thermocouple 104 may be provided with only one thermocouple (junction point) as long as the average temperature of the air discharged from the housing 29 can be measured.

  The wind speed sensor 105 is disposed at the air outlet 29 b of the housing 29 and measures the wind speed of the air discharged from the housing 29.

  Here, the grid 160 partitions the outdoor unit heat exchanger 23 into nine on a plane orthogonal to the wind direction. The upstream side surface of the outdoor unit heat exchanger 23 is disposed so as to face the air inlet 29a of the housing 29. However, depending on the position where the outdoor unit 10 is disposed, the outdoor unit heat exchanger 23 is fed for each location of the outdoor unit heat exchanger 23. Air temperature (upstream temperature) changes. Further, the wind speed varies depending on the location of the outdoor unit heat exchanger 23 depending on the relationship between the position of the outdoor unit fan 26 and the position of the air outlet 29 b in the housing 29. Therefore, the grid 160 is divided so that the upstream temperature is the same and the wind speed is the same (for example, a square having a side of 30 cm) so as to be the same grid. The number of sections can be arbitrarily set.

  In this embodiment, the wind speed ratio of the upper three grids 160a to 160c close to the air outlet 29b, the three central grids 160d to 160f, and the three grids 160g to 160i far from the air outlet 29b is 3. : 2: 1 It is assumed that the number of junction points 120 corresponding to the wind speed ratio is arranged in each grid 160. Specifically, as shown in FIG. 2B, three joints 120 are arranged in the grids 160a to 160c having a wind speed ratio of 3, and two grids 160d to 160f having a wind speed ratio of 2 are arranged. One joint point 120 is disposed on the grids 160g to 160i in which the joint point 120 is disposed and the wind speed ratio is 1.

ここで、Ｔは重み付け平均温度差（Ｋ・ｍ^２）であり、ａ_ｎは各グリッド１６０での上流側の風速と、ハウジング２９の空気出口２９ｂでの風速との風速比であり、Ｓ_ｎは各グリッド１６０の面積（ｍ^２）であり、ｔ_{ｉｎ，ａｖｅ}は上流平均温度（Ｋ）であり、ｔ_{ｏｕｔ，ａｖｅ}は下流平均温度（Ｋ）であり、ｎはグリッド数である。なお、各グリッド１６０の風速比ａ_ｎは、各グリッド１６０の上流側に風速センサを配置して、予め計測することにより導出することができる。また、各グリッド１６０の風速比ａ_ｎは、一度導出すれば、風速によらずほぼ変化しないことが過去の測定実績（非特許文献１）により確認されている。 Returning to FIG. 1, the performance evaluation apparatus 100 can always perform performance evaluation during cooling operation (in real time). Specifically, the heat exchanger heat radiation amount deriving unit 110 calculates the temperature difference between the upstream average temperature measured by the upstream thermocouple 103 and the downstream average temperature measured by the downstream thermocouple 104 as the wind speed for each grid 160. A weighted average temperature difference T weighted based on the ratio is derived from the equation (1).

Here, T is the weighted average temperature difference _{^{(K · m 2), a}} n is the velocity of the upstream side of each grid 160, a wind speed ratio of the wind speed at the air outlet 29b of the housing 29, _{S n} Is the area (m ² ) of each grid 160 _{, tin, ave} is the upstream average temperature (K), t _{out, ave} is the downstream average temperature (K), and n is the number of grids. Incidentally, the wind speed ratio a _n of each grid 160 may place the wind velocity sensor on the upstream side of each grid 160, it can be derived by pre-measurement. Further, the wind speed ratio a _n of each grid 160 Once derived, it does not substantially change regardless of the wind speed is confirmed by the past measurement results (Non-Patent Document 1).

ここで、Ｑは室外機総熱交換量（Ｗ）であり、ρは空気密度（ｋｇ／ｍ^３）であり、Ｃ_ｐは定圧比熱（ｋＪ／（ｋｇ／Ｋ））である。 Further, the heat exchanger heat radiation amount deriving unit 110 derives the outdoor unit total heat exchange amount Q by the equation (2) using the derived weighted average temperature difference T.

Here, Q is the outdoor unit total heat exchange amount (W), ρ is the air density (kg / m ³ ), and C _p is the constant pressure specific heat (kJ / (kg / K)).

  In this way, by deriving the weighted average temperature difference T obtained by weighting the temperature difference for each grid 160 by the wind speed ratio, the heat release amount for each grid 160 in which the heat release amount increases in proportion to the wind speed ratio is obtained for each grid 160. The downstream temperature may not be measured and derived individually, and the outdoor unit total heat exchange amount Q obtained by integrating the heat radiation amount for each grid 160 can be easily derived.

ここで、Ｅ_Ｐは室外機製造熱量（Ｗ）であり、Ｅ_ＣＤは室外機熱交換器２３の放熱量（Ｗ）であり、Ｅ_ＩＧはガス消費量（Ｗ）であり、Ｅ_Ｒはラジエーター２５の放熱量（Ｗ）であり、Ｅ_Ｘは排ガス熱量（Ｗ）である。なお、上記の室外機総熱交換量Ｑは、室外機熱交換器２３の放熱量Ｅ_ＣＤとラジエーター２５の放熱量Ｅ_Ｒとの合計量である。また、ガス消費量Ｅ_ＩＧは、ガスエンジン２１で消費されたガス量から導出することができ、排ガス熱量Ｅ_Ｘは、排気ガス熱交換器２４から排出される排気ガスの熱量から導出することができる。 The outdoor unit production heat quantity deriving unit 112 derives the outdoor unit production heat quantity by Equation (3).

Here, _{E P} is the outdoor unit producing heat _{(W), E CD} is the heat radiation amount of the outdoor unit heat exchanger 23 _{(W), E IG} is a gas consumption (W), _{E R} is the radiator a heat radiation amount of 25 (W), _{E X} is exhaust heat (W). Note that the outdoor unit total heat exchange rate Q of the above, the total amount of the heat radiation amount E _R of the heat radiation amount E _CD and radiator 25 of the outdoor unit heat exchanger 23. The gas consumption E _IG may be derived from the amount of gas consumed by the gas engine 21, the exhaust gas heat E _X is be derived from heat of the exhaust gas discharged from the exhaust gas heat exchanger 24 it can.

According to (3), the power of the compressor 22 is derived by subtracting the heat radiation amount E _R and the exhaust gas heat E _X radiator 25 from gas consumption E _IG, heat radiation amount of the outdoor unit heat exchanger 23 E By subtracting the power of the compressor 22 from the _{CD, the} outdoor unit manufacturing heat amount E _P manufactured by the outdoor unit 10, that is, the cooling heat amount output from the indoor unit heat exchanger 31 is derived.

ここで、Ｅ_ＩＥは、電力消費量（Ｗ）であり、本実施形態においては室外機モータ２７および室内機モータ３３の電力消費量が主である。 Then, COP derivation unit 114 derives the COP by and (4) using the derived outdoor unit produced heat _{E P.}

Here, E _IE is power consumption (W), and in this embodiment, the power consumption of the outdoor unit motor 27 and the indoor unit motor 33 is mainly used.

  As described above, the performance evaluation apparatus 100 arranges the junction 120 of the upstream thermocouple 103 for each grid 160 on the upstream side of the outdoor unit heat exchanger 23, and arranges the downstream thermocouple 104 at the air outlet 29 b of the housing 29. did. Then, the temperature difference between the upstream average temperature measured by the upstream thermocouple 103 and the downstream average temperature measured by the downstream thermocouple 104 is weighted based on the wind speed ratio for each grid 160 previously derived, and weighted. The outdoor unit total heat exchange amount Q is derived based on the weighted average temperature difference T and the wind speed measured by the wind speed sensor 105. Thereby, it is not necessary to arrange a thermocouple downstream of each grid 160 of the outdoor unit heat exchanger 23, the installation of the measuring device is facilitated, and the performance evaluation can be performed more easily than before.

  In particular, in the prior art, when a thermocouple is arranged for each grid 160 on the downstream side of the outdoor unit heat exchanger 23, a custom sheathed thermocouple having a diameter smaller than the fin pitch of the outdoor unit heat exchanger 23 is used. In addition, it is necessary to prepare an advanced installation technique in which the sheath thermocouple is arranged on the downstream side of the outdoor unit heat exchanger 23. On the other hand, in the performance evaluation apparatus 100, since there is no such need, performance evaluation can be performed at low cost and installation work can be simplified.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

ここで、Ｅ_ＴはＥＨＰのコンプレッサの消費電力（Ｗ）である。 For example, in the above embodiment, the performance evaluation of the GHP 10 is performed. However, the present invention is not limited to this, and the performance evaluation of an EHP (electric motor heat pump air conditioner) may be performed. When evaluating the performance of EHP, equations (5) and (6) are used instead of equations (3) and (4).

Here, _{E T} is the power consumption of the compressor EHP (W).

  In the above embodiment, the thermocouple (upstream thermocouple 103, downstream thermocouple 104) is adapted as the temperature sensor (upstream temperature sensor, downstream temperature sensor), but the present invention is not limited to this. A temperature sensor, such as a thermistor, may be applied.

  Moreover, in the said embodiment, although the junction 120 of the upstream thermocouple 103 was arrange | positioned for every grid 160, if there is no temperature distribution in the upstream of the outdoor unit heat exchanger 23, 1 will be divided without grid division. Only one joint point 120 may be arranged.

In the above embodiment, (1) and (2) by equation outdoor unit total heat exchange rate as the total amount of the heat radiation amount E _R of the heat radiation amount E _CD and radiator 25 of the outdoor unit heat exchanger 23 Q However, the present invention is not limited to this, and if the heat radiation amount E _R of the radiator 25 can be derived separately, the heat radiation amount E _CD of the outdoor unit heat exchanger 23 can be obtained by the equations (1) and (2). As described above, the outdoor unit total heat exchange amount Q may be derived.

  INDUSTRIAL APPLICABILITY The present invention can be used for a performance evaluation device that performs performance evaluation of an air conditioner that air-conditions a room.

10 GHP (Air Conditioner)
23 Outdoor unit heat exchanger (heat exchanger)
100 Performance Evaluation Device 103 Upstream Thermocouple (Upstream Temperature Sensor)
104 Downstream thermocouple (downstream temperature sensor)
105 Wind Speed Sensor 110 Heat Exchanger Radiation Derivation Unit

Claims (3)

An upstream temperature sensor that is arranged on the upstream side of the heat exchanger provided in the outdoor unit of the air conditioner and measures the average temperature of the air blown to the heat exchanger as the upstream average temperature;
A downstream temperature sensor for measuring an average temperature of air discharged from the outdoor unit as a downstream average temperature;
A wind speed sensor for measuring the wind speed of the air discharged from the outdoor unit;
The upstream average temperature measured by the upstream temperature sensor based on the wind speed ratio between the wind speed on the upstream side of the grid and the wind speed measured by the wind speed sensor in each grid that divides the heat exchanger into a plurality of grids. And the downstream average temperature measured by the downstream temperature sensor are weighted for each grid, and the heat exchanger discharge is based on the weighted temperature difference and the wind speed measured by the wind speed sensor. A heat exchanger radiating amount deriving section for deriving heat,
A performance evaluation apparatus comprising: The upstream temperature sensor is arranged for each grid in the heat exchanger,
The performance evaluation apparatus according to claim 1, wherein the upstream average temperature is a value obtained by averaging the upstream temperatures for each grid measured by the upstream temperature sensor. The upstream temperature sensor is a thermocouple in which a pair of thermocouple wires made of different metals are joined at a joint point, and the joint point is arranged for each grid of the heat exchanger, and the plurality of joints The lengths of the thermocouple wires made of at least the same metal bonded to each point are the same,
The performance according to claim 2, wherein one end of each thermocouple wire is joined to one of the joining points and the other end is joined to the other end of another thermocouple wire made of the same metal. Evaluation device.

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