WO2013190747A1 - Dispositif de test environnemental - Google Patents

Dispositif de test environnemental Download PDF

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Publication number
WO2013190747A1
WO2013190747A1 PCT/JP2013/001660 JP2013001660W WO2013190747A1 WO 2013190747 A1 WO2013190747 A1 WO 2013190747A1 JP 2013001660 W JP2013001660 W JP 2013001660W WO 2013190747 A1 WO2013190747 A1 WO 2013190747A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
cooling heat
auxiliary cooling
air
temperature
Prior art date
Application number
PCT/JP2013/001660
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English (en)
Japanese (ja)
Inventor
康晴 神
Original Assignee
ナガノサイエンス株式会社
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Filing date
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Application filed by ナガノサイエンス株式会社 filed Critical ナガノサイエンス株式会社
Publication of WO2013190747A1 publication Critical patent/WO2013190747A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/002—Test chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/147—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with both heat and humidity transfer between supplied and exhausted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0042—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater characterised by the application of thermo-electric units or the Peltier effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
    • F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
    • F25B2321/025—Removal of heat
    • F25B2321/0251—Removal of heat by a gas

Definitions

  • the present invention relates to an environmental test apparatus such as a constant temperature and humidity chamber, and more particularly to a technique for performing an energy saving operation.
  • an environmental test apparatus such as a constant temperature and humidity chamber
  • a temperature sensor and a humidity sensor are provided in a test chamber of a thermo-hygrostat surrounded by a heat insulating wall, and an air conditioner including a refrigerator, a humidifier, and a heater is based on these measured values. I have control. By doing so, air is circulated between the test chamber of the constant temperature and humidity chamber and the air conditioner so that the temperature and humidity in the test chamber are kept constant at the target temperature and humidity (see, for example, Patent Document 1). ).
  • an evaporator of a refrigerant circuit that performs a refrigeration cycle is used for air cooling and dehumidification, and a heater and a humidifier provided separately from the refrigerant circuit are used to generate air at a target temperature and humidity. It is trying to generate.
  • the air is cooled by the evaporator of the refrigerant circuit from the current point A to point B on the saturated water vapor pressure curve.
  • the air is cooled to point B, condensation occurs in the evaporator.
  • cooling the air to point C reduces the temperature and humidity.
  • air is heated with the heater from the point C to the point D, the air of target temperature / humidity will be obtained.
  • the present invention has been made in view of such problems, and an object thereof is to enable energy saving during steady operation with a small control amount in an environmental test apparatus such as a constant temperature and humidity chamber. .
  • the first invention includes a cooling heat exchanger that cools and dehumidifies air, a heater that heats air, and a humidifier that humidifies air, and sets the temperature and humidity of the air in the test room to a target temperature and humidity. Assume an environmental testing device configured to control.
  • the environmental test apparatus includes a main cooling heat exchanger constituted by an evaporator of a refrigerant circuit and an auxiliary cooling heat exchanger having a smaller heat capacity than the main cooling heat exchanger. It is characterized by comprising an electronic cooler.
  • the “cooling heat exchanger” means a heat exchanger that also performs dehumidification by cooling air.
  • the air in the test chamber is cooled and dehumidified by the main cooling heat exchanger, and the temperature and humidity of the test chamber are adjusted by adjusting the temperature and humidity of the air by the heater and the humidifier.
  • the value can be controlled.
  • the auxiliary cooling heat exchanger has a smaller heat capacity and a smaller heat exchange area than the main cooling heat exchanger. Therefore, the input to the auxiliary cooling heat exchanger can be reduced.
  • the main cooling heat exchanger with a large heat exchange area if the cooling capacity is reduced, dew condensation may not occur on the surface of the heat exchanger and dehumidification may not be performed, whereas auxiliary cooling with a small heat exchange area. If a heat exchanger is used, dehumidification is possible even at low output.
  • the auxiliary cooling heat exchanger includes a first auxiliary cooling heat exchanger and a second auxiliary cooling heat exchanger, and the first auxiliary cooling heat exchanger and the second auxiliary cooling are included.
  • the exchanger is characterized in that any one of them is configured as an air cooler alternately.
  • air dehumidification is performed by alternately using the first auxiliary cooling heat exchanger and the second auxiliary cooling heat exchanger.
  • the second auxiliary cooling heat exchanger can be stopped or operated at a low capacity, or can be on the heat dissipation side, and the second auxiliary cooling heat exchanger can be cooled.
  • the first auxiliary cooling heat exchanger can be stopped or operated with low capacity, or can be on the heat dissipation side.
  • either the first auxiliary cooling heat exchanger or the second auxiliary cooling heat exchanger is an air cooler.
  • the operation mode in which defrosting is performed on the other side is configured to be possible.
  • the second auxiliary cooling heat exchanger when the first auxiliary cooling heat exchanger is on the cooling dehumidifying side, the second auxiliary cooling heat exchanger is on the defrost side, and when the second auxiliary cooling heat exchanger is on the cooling side, the first auxiliary cooling heat exchanger is on the cooling side.
  • the heat exchanger can be on the defrost side.
  • the auxiliary cooling heat exchanger on the defrost side may perform a heat radiation operation, may gradually defrost by stopping the cooling operation, or may continue cooling slightly. Thus, defrosting may be performed at the same time while cooling with low capacity.
  • the electronic cooler is constituted by a Peltier effect element, the first electric heating surface of the Peltier effect element faces the inside of the machine, and the second electric heating surface is the machine. It is characterized by being configured to face the outside.
  • the operation of cooling and dehumidifying the air becomes possible, and the heat radiation is performed on the air outside the apparatus.
  • the evaporator of the refrigerant circuit is the main cooling heat exchanger, while the auxiliary cooling heat exchanger having a smaller heat capacity than that of the main cooling heat exchanger is provided.
  • a small amount of auxiliary cooling heat exchanger during steady operation can be used properly.
  • the auxiliary cooling heat exchanger it is possible to perform a dehumidifying operation at a low output, which is difficult with a main cooling heat exchanger having a large cooling capacity, and energy saving can be realized.
  • the first auxiliary cooling heat exchanger and the second auxiliary cooling heat exchanger are alternately used to cool and dehumidify the air, while the other auxiliary cooling heat exchanger is stopped or has a low capacity. Since it is possible to perform the operation or to perform the operation to the heat radiation side, for example, the air can be cooled and dehumidified simultaneously while defrosting the frosted auxiliary cooling heat exchanger.
  • the continuous operation may stop when the main cooling heat exchanger is frosted, whereas according to the second invention, the auxiliary cooling is performed. Continuous operation is possible by using two heat exchangers alternately.
  • the second aspect of the invention includes a defrost operation when the auxiliary cooling heat exchanger is used alternately. However, if the defrost operation is not necessary depending on the operation condition, the auxiliary cooling heat exchanger that does not become the cooling side is stopped or The cooling operation may be performed with a low capacity.
  • the first auxiliary cooling heat exchanger and the second auxiliary cooling heat exchanger are alternately used to cool and dehumidify the air while the other auxiliary cooling heat exchanger is set to the defrost side. Therefore, the air can be cooled and dehumidified while defrosting the frosted auxiliary cooling heat exchanger.
  • the structure using only the main cooling heat exchanger of a refrigerant circuit when a main cooling heat exchanger frosts, continuous operation will stop, In this 3rd invention
  • continuous operation is possible by using two auxiliary cooling heat exchangers alternately.
  • the operation of cooling and dehumidifying the air becomes possible, and the heat radiation is performed on the air outside the apparatus. It is possible to prevent the air temperature from rising more than necessary.
  • FIG. 1A is a central longitudinal sectional view showing a constant temperature and humidity chamber of an environmental test apparatus according to an embodiment of the present invention
  • FIG. 1B is a sectional view taken along line BB in FIG.
  • FIG. 2 is a flowchart showing the operation of the environmental test apparatus of FIG.
  • FIG. 3A is an explanatory diagram showing the temperature change of the air by the main cooling heat exchanger
  • FIG. 3B is an explanatory diagram showing the temperature change of the air by the auxiliary cooling heat exchanger.
  • 4A is a central longitudinal sectional view showing a constant temperature and humidity chamber of an environmental test apparatus according to another embodiment
  • FIG. 4B is a sectional view taken along line BB of FIG. 4A. It is a flowchart which shows the modification of the driving
  • This embodiment relates to a constant temperature and humidity chamber 11 of an environmental test apparatus 10 used for a stability test of pharmaceuticals and the like.
  • 1A is a central longitudinal sectional view showing a constant temperature and humidity chamber 11 of the environmental test apparatus 10, and FIG. 1B is a sectional view taken along the line BB of FIG. 1A.
  • This constant temperature and humidity chamber 11 is a rectangular parallelepiped box fixed on the base 12, in order to maintain the temperature and humidity in the following test chamber C ⁇ b> 1 formed inside within a preset range. Used for.
  • the constant temperature and humidity chamber 11 includes a front plate 13 provided with a door 13a, a back plate 14 facing the front plate 13, side plates 15 and 16 on both left and right sides, a top plate 17 positioned at the upper end of the box, And a bottom plate 18 located at the lower end.
  • a partition plate 18 that divides the inside of the constant temperature and humidity chamber 11 into a test chamber C1 located on the front side and an air conditioning chamber C2 located on the back side.
  • a shelf board (not shown) that divides the inside of the test chamber C1 into a plurality of stages is provided inside the test chamber C1.
  • the test chamber C1 inside the constant temperature and humidity chamber 11 is opened so that a sample can be put in the test chamber C1 and a sample in the test chamber C1 can be taken out. It has become.
  • a humidifier 21, a cooling heat exchanger 22, a heater 23, and a fan 24 are arranged in order from the bottom to the top. Further, an air outlet plate 25 having an air outlet 25 a is provided on the upper portion of the fan 24.
  • the fan 24 the air in the test chamber C1 is sucked into the air conditioning chamber C2 from below, the temperature and humidity are adjusted, and conditioned air is blown out from above the air conditioning chamber C2. In this way, air circulates between the test chamber C1 and the air conditioning chamber C2.
  • the humidifier 21 includes a heater 21a and a receiving tray 21b for storing water for humidification.
  • the heater 21a heats the water for humidification with a heating amount corresponding to the supplied electric energy.
  • Water is supplied to the receiving tray 21b from a water supply tank (not shown) provided outside the test chamber C1.
  • the humidifier 21 performs the operation
  • the cooling heat exchanger 22 is a heat exchanger that cools and dehumidifies air, and includes a main cooling heat exchanger 31 and an auxiliary cooling heat exchanger 32 having a smaller heat capacity than the main cooling heat exchanger 31.
  • the main cooling heat exchanger 31 is constituted by an evaporator of a refrigerant circuit that performs a vapor compression refrigeration cycle, and is disposed so as to be entirely located inside the air conditioning chamber C2. Moreover, what is necessary is just to install suitably other components, such as a compressor of a refrigerant circuit, and a condenser, outside the machine.
  • the main cooling heat exchanger 31 is mainly used at the start of operation or when the temperature and humidity greatly deviate from the target set value for some reason, and during most of the operation, auxiliary cooling heat exchange is performed.
  • a vessel 32 is used.
  • the auxiliary cooling heat exchanger 32 is configured by an electronic cooler. Specifically, the auxiliary cooling heat exchanger includes a Peltier effect element 33 that is an electronic cooler, a first fin 34 provided on the first electrothermal surface 33 a of the Peltier effect element 33, and a second Peltier effect element 33. It has the 2nd fin 35 provided in the electrothermal surface 33b.
  • the auxiliary cooling heat exchanger 32 is arranged such that the first electric heating surface 33a faces the air conditioning chamber C2 in the apparatus and the second electric heating surface 33b faces the outside space.
  • the auxiliary cooling heat exchanger 32 includes a first auxiliary cooling heat exchanger 32a and a second auxiliary cooling heat exchanger 32b that are positioned in parallel with the air flow direction in the air conditioning chamber C2.
  • the first auxiliary cooling heat exchanger 32a and the second auxiliary cooling heat exchanger 32b are configured in the same manner.
  • the first auxiliary cooling heat exchanger 32a and the second auxiliary cooling exchanger are configured to be a cooler that alternately cools and dehumidifies air.
  • the second auxiliary cooling heat exchanger 32b stops or dissipates heat at the first electric heating surface 33a, and the second auxiliary heating heat exchanger 32a
  • the first auxiliary cooling heat exchanger 32a stops or dissipates heat at the first electric heating surface 33a.
  • auxiliary cooling heat exchanger 32 under the operating conditions in which the auxiliary cooling heat exchanger 32 is frosted, when one of the first auxiliary cooling heat exchanger 32a and the second auxiliary cooling heat exchanger 32b is an air cooler, defrost is performed on the other. Operation mode is enabled. In this operation mode, when the first electric heating surface 33a of the first auxiliary cooling heat exchanger 32a becomes a cooling surface, the first electric heating surface 33a of the second auxiliary cooling heat exchanger 32b becomes a heat dissipation surface, When the first electric heating surface 33a of the auxiliary cooling heat exchanger 32b becomes a cooling surface, the state can be switched between the first electric heating surface 33a of the first auxiliary cooling heat exchanger 32a becoming a heat dissipation surface.
  • auxiliary cooling heat exchangers 32a and 32b on the defrost side can be defrosted slowly even if they are stopped as well as being switched to the heat radiation side. Further, even if the auxiliary cooling heat exchangers 32a and 32b on the defrost side continue to operate with a slight cooling capacity, it is possible to perform the defrosting simultaneously while continuing the cooling operation slightly.
  • the cooling heat exchanger 22 (the main cooling heat exchanger 31 and the auxiliary cooling heat exchanger 32) performs an operation of reducing the air flowing through the air conditioning chamber C2 to a dew point temperature calculated based on the set temperature and the set humidity. . As a result, a necessary amount of water at the set temperature and set humidity is secured. This control is performed in consideration of the operation amount of the temperature and humidity by the humidifier 21 and the heater 23.
  • the heater 23 is, for example, an electric heater, and performs an operation of raising the air cooled by the cooling heat exchanger 22 to a set temperature based on a control signal output from the controller 40 described later. Thereby, the heater 23 heats the inside of the test chamber C1 with the heating amount according to the supplied electric energy.
  • the fan 24 operates so that conditioned air whose temperature and humidity are adjusted by the humidifier 21, the cooling heat exchanger 22, and the heater 23 is circulated in the test chamber C1.
  • the air in the test chamber C1 is circulated by the fan 24, and the humidifier 21, the cooling heat exchanger 22, and the heater 23 are operated as necessary, so that the temperature and humidity in the test chamber C1 can be controlled. It is stably maintained within a preset range.
  • a temperature / humidity sensor is provided in the test chamber C1, and feedback control based on, for example, a detection value is performed.
  • the controller 12 is provided on the base 12.
  • the controller 40 is connected to each of the devices 21, 22, 23, and 24 provided in the air-conditioning room C2, and has a temperature sensor (not shown) provided in the test room C1 and a constant temperature and humidity. It is connected to the input part (not shown) of the operation panel provided in the tank 11.
  • the controller 40 controls the humidifier 21, the cooling heat exchanger 22, and the heater 23 based on the input setting signal and the detected temperature of the test chamber C1, and the temperature and humidity of the air in the test chamber C1 are targeted. Adjusted to temperature and humidity.
  • step ST1 the temperature and humidity of the test chamber C1 are measured in step ST1 and step ST2.
  • step ST3 convergence determination is performed, and it is determined whether or not the measured temperature and humidity have converged within a predetermined temperature and humidity range with respect to the set temperature and humidity.
  • step ST4 air is cooled and dehumidified by the main cooling heat exchanger 31 (refrigerant refrigerator) in step ST4, and the temperature and humidity are adjusted by the humidifier 21 and the heater 23 in steps ST5 and ST6. To return to step ST1.
  • the main cooling heat exchanger 31 refrigerant refrigerator
  • step ST3 If the determination result in step ST3 is “YES”, the room temperature of the test chamber C1 converges to a predetermined temperature range with respect to the set value and enters a steady operation. In this case, the process proceeds to step ST7. In this steady operation, the main cooling heat exchanger 31 is stopped, and the cooling and dehumidifying operation by the auxiliary cooling heat exchanger 32 is performed.
  • the heat exchange area of the main cooling heat exchanger 31 is S.
  • the air temperature does not decrease in the main cooling heat exchanger 31 during steady operation
  • the auxiliary Since the air temperature is lowered only by the cooling heat exchanger 32, the temperature T3 of the air flowing out from the cooling heat exchanger 22 is T3 T1 ⁇ T. Therefore, the temperature becomes higher than that when the main cooling heat exchanger 31 is used, and the dehumidification amount is also reduced accordingly.
  • the ratio of the heat exchange area between the main cooling heat exchanger 31 and the auxiliary cooling heat exchanger 32 is not simply proportional to the heat capacity or cooling capacity of the main cooling heat exchanger 31 and the auxiliary cooling heat exchanger 32. Here, it is assumed to be roughly proportional. Note that the heat exchange area of the auxiliary cooling heat exchanger 32 is determined based on the cooling capacity required during steady operation.
  • the cooling and dehumidifying capacity can be reduced by using the auxiliary cooling heat exchanger 32 during steady operation.
  • the capacity of the heat exchanger is reduced too much, dew condensation cannot occur without dew condensation. Since it does not stop, dehumidification is not disabled.
  • the steady operation is a state in which the temperature and humidity in the test chamber C1 are converged within a predetermined range. Therefore, rapid cooling and rapid dehumidification are not necessary, and the operation using the auxiliary cooling heat exchanger 32 is performed. Even so, it is sufficient to keep the temperature and humidity at the set values. Moreover, if the capacity of the heat exchanger is too large, there is a risk that hunting is likely to occur in the control. However, with the auxiliary cooling heat exchanger 32 of the present embodiment, stable operation with reduced hunting is performed.
  • step ST7 the frosting state of the auxiliary cooling heat exchanger 32 is determined. If the auxiliary cooling heat exchanger 32 is frosted, an operation of switching between the cooling side and the defrosting side is executed in step ST8, and the process proceeds to step ST9 and after. If not, the auxiliary cooling heat exchanger 32 is switched. Without proceeding to step ST9.
  • the auxiliary cooling heat exchanger 32 on the defrosting side may be de-energized and stopped to perform defrosting by a gradual temperature rise, or the auxiliary cooling heat exchanger 32 on the defrosting side Defrosting may be performed relatively quickly by switching the direction of voltage application so that one electrothermal surface 33a is on the heat radiation side. What is necessary is just to set control of the auxiliary
  • step ST9 the temperature and humidity are controlled by the auxiliary cooling heat exchanger 32 on the dehumidifying cooling side.
  • the temperature and humidity are adjusted by the humidifier 21 and the heater 23, and the process returns to step ST1.
  • the auxiliary cooling heat exchanger 32 is provided in addition to the main cooling heat exchanger 31, and air is cooled and dehumidified by the auxiliary cooling heat exchanger 32 having a small heat exchange area during steady operation. . Since the auxiliary cooling heat exchanger 32 has a smaller heat capacity than the main cooling heat exchanger 31, less temperature is required to change the temperature of the auxiliary cooling heat exchanger 32, and power consumption is reduced. In addition, when a heat exchanger having a large cooling capacity is used during low-power steady operation, air may not be dehumidified without causing condensation on the surface of the heat exchanger, whereas the auxiliary cooling heat exchanger 32 is used. As a result, dehumidification can be reliably performed even during steady operation, and energy consumption at that time is also reduced.
  • the evaporator of the refrigerant circuit is not suitable for a low output heat exchanger (main cooling heat exchanger 31), in this embodiment, a low output auxiliary cooling heat exchange is performed using the Peltier effect element 33.
  • the device 32 can be easily put into practical use.
  • the first auxiliary cooling heat exchanger 32a and the second auxiliary cooling heat are used. It is effective to operate the exchanger 32b by alternately switching between the cooling and dehumidifying side and the defrosting side.
  • the setting condition is 10 ° C. and 50% RH
  • the dew point temperature is 0 ° C.
  • the setting temperature is 5 ° C. and 60% RH
  • the dew point temperature is ⁇ 2 ° C.
  • frost formation is likely to occur.
  • switching between the two auxiliary cooling heat exchangers 32 enables continuous operation.
  • the position and shape of the humidifier 21 in FIG. 1 may be changed as in the humidifier 26 shown in FIG.
  • the humidifier 26 in FIG. 4 is a water spray type humidifier 26. Even with this configuration, it is possible to obtain air having the desired temperature and humidity on the outlet side of the fan 24.
  • the interval between the main cooling heat exchanger 31 and the heater 23 is widened, and the auxiliary cooling heat exchanger 32 is shifted upward in FIG. 1 so as to be positioned downstream of the main cooling heat exchanger 31. It may be arranged (not shown). Even if comprised in this way, it is possible to acquire the effect similar to the said embodiment.
  • the frosting state determination in step ST7 shown in the flowchart of FIG. 2 can be specifically determined based on the time period as shown in step ST7 'of FIG.
  • a time period in which frost formation is likely to occur is determined in advance according to the temperature and humidity setting conditions, and the auxiliary cooling heat exchanger 32 is preferably switched between the cooling and dehumidifying side for each time period.
  • the frost determination is performed by providing a photoelectric sensor in the vicinity of the auxiliary cooling heat exchanger 32 and detecting a change in the reflection state of light in the auxiliary cooling heat exchanger 32. You may make it discriminate
  • the number of auxiliary cooling heat exchangers 32 may be one instead of two.
  • the present invention is useful for a technique for performing an energy saving operation of an environmental test apparatus such as a constant temperature and humidity chamber.

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Abstract

L'invention porte sur un dispositif de test environnemental (10), lequel dispositif comprend un échangeur de chaleur de refroidissement (22) pour refroidir et déshumidifier l'air, un élément chauffant (23) pour chauffer l'air et un humidificateur (21) pour humidifier l'air, et lequel régule la température et l'humidité d'un évaporateur (C1) à une humidité et une température cibles, un évaporateur dans un circuit de réfrigérant jouant le rôle d'échangeur de chaleur de refroidissement principal (31), un échangeur de chaleur de refroidissement auxiliaire (32) présentant une capacité thermique inférieure à celle de l'échangeur de chaleur de refroidissement principal (31) étant disposé, l'échangeur de chaleur de refroidissement auxiliaire (32) étant configuré à partir d'un dispositif de refroidissement électronique (33) tel qu'un élément Peltier, et, par conséquent, un bon rendement en énergie étant possible pendant des opérations stables avec une régulation réduite.
PCT/JP2013/001660 2012-06-20 2013-03-13 Dispositif de test environnemental WO2013190747A1 (fr)

Applications Claiming Priority (2)

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JP2012139191A JP2014002118A (ja) 2012-06-20 2012-06-20 環境試験装置
JP2012-139191 2012-06-20

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WO2013190747A1 true WO2013190747A1 (fr) 2013-12-27

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CN110006118A (zh) * 2019-03-29 2019-07-12 中国飞机强度研究所 一种大型综合气候实验室空气处理系统
JP2019219205A (ja) * 2018-06-18 2019-12-26 株式会社島津製作所 サンプル温調機能を備えた装置
US10578544B2 (en) 2016-08-25 2020-03-03 Shimadzu Corporation Flow cell
CN111024595A (zh) * 2019-11-27 2020-04-17 安徽科技学院 一种干湿交替条件下硫化矿物风化氧化的模拟装置
CN111023604A (zh) * 2018-10-10 2020-04-17 爱斯佩克株式会社 环境试验装置和空气调节装置

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EP3179230A1 (fr) * 2015-12-08 2017-06-14 Voestalpine Stahl GmbH Procede et dispositif d'essai reactionnel d'au moins un echantillon
JP6389859B2 (ja) * 2016-11-29 2018-09-12 ダイキン工業株式会社 空調システム

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