The working principle of the constant temperature and humidity test box

1.
The constant temperature and humidity test box is mainly composed of a control panel, a switchboard, a thermal insulation layer, a blower, a heater, a humidifier, and a refrigerator.
The main specifications can be divided into 6 standard sizes and 10 specifications for different conditions
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2.
The controller can be connected to the computer via the LAN interface, and the user can design programs on the computer screen, collect test data and records, call program execution, and remotely control the machine to switch on and off
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3.
The use of multi-blade air blower for strong air circulation avoids any dead angle and makes the indoor temperature and humidity evenly distributed
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4.
Complete safety protection device, if an abnormal situation occurs, the controller screen will automatically display the fault status, cut off the power switch, and provide troubleshooting methods
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5.
The function of the compressor: It is used to supplement the energy, and the low-temperature and low-pressure refrigerant in the evaporator is compressed into the high-temperature and high-pressure superheated steam by the steam compressor, and then sent to the condenser
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6.
The function of the condenser: it condenses the high temperature and high pressure steam into a high pressure and normal temperature liquid, and releases a lot of heat
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7.
The filter is a device that uses a porous filter medium to intercept the solid particles in the mixture of liquid and solid particles to achieve solid and liquid separation
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　8.
Evaporator heat exchange: The low-temperature and low-pressure refrigerant absorbs heat and evaporates inside, so as to take away the heat in the test space and achieve the purpose of cooling; the evaporator independently developed and produced by Hengzhun plays an irreplaceable role in the low-temperature and low-humidity test.
It plays an important role in taking away high temperature for heat energy exchange and realizing the characteristics of low temperature and low humidity
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9.
Expansion valve: The flow adjustment range is wide, and it can act according to various preset adjustment rules to obtain good superheat adjustment quality, which greatly improves the start-up characteristics and variable load dynamic characteristics of the refrigeration unit
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High efficiency, stable operation, low energy consumption and good temperature control accuracy 10.
Refrigerant: American environmental protection refrigerant R-404: a working fluid used to transfer heat energy and produce freezing effect
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11.
Nickel-chromium heater: Nickel-chromium material has high strength, high temperature resistance, low temperature, damp heat, and strong plasticity.
12.
Heating system: used to increase space temperature 13.
Air circulation system: unique space air circulation system to avoid airflow In the test area, the flow dead angle is generated, which improves the high and low temperature accuracy and uniformity of the test chamber
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