Shanghai Island Korea tells you about the working principle of cold and hot shock test chamber refrigeration and refrigeration use. The thermal shock test chamber, also known as high and low temperature impact test chamber, is a device that realizes the transformation of test temperature at high temperature and low temperature in an instant. The overall configuration can be roughly divided into heating system, refrigeration system and alternating system. Today, Shima Han will focus on the working principle and refrigeration use of the thermal shock test chamber refrigeration.
1. Refrigeration system and compressor: In order to ensure the cooling rate of the test box and the low temperature of the zui, the test box adopts a set of imported French Taikang compressor cold refrigeration system. The cascade cold system comprises a high temperature refrigeration cycle and a low temperature refrigeration cycle. The connecting vessel is an evaporative condenser. The evaporating condenser is also used for energy transfer. The heat energy in the working chamber is transmitted through the two-stage refrigeration system to achieve the enthalpy temperature. the goal of. The design of the refrigeration system uses energy regulation technology, and an effective treatment method can ensure the energy consumption and cooling capacity of the refrigeration system can be effectively adjusted under the normal operation of the refrigeration unit, so that the operation cost of the refrigeration system And the failure rate drops to a more economical state.
2. Refrigeration working principle: Both high and low refrigeration cycles use reverse card cycle, which consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabatically compressed to a higher pressure by the compressor, and the work is exhausted to increase the temperature of the exhaust gas, and then the refrigerant is heat-exchanged with the surrounding medium through the condenser isothermally, and the heat is transferred to the surrounding medium. After the refrigerant is adiabatically expanded by the valve, the temperature of the refrigerant is lowered. After the zui, the refrigerant absorbs heat from the higher temperature object isothermally through the evaporator, so that the temperature of the object to be cooled is lowered. This cycle is repeated to achieve the purpose of cooling.
3, air conditioning mode: forced ventilation internal balance temperature regulation (BTC). The method means that when the refrigeration system is continuously operated, the control system controls the output of the heater according to the result of the PID automatic calculation output according to the set temperature point, and the Zui finally reaches a dynamic balance. (1) Air circulation device: Built-in air-conditioning room, circulation air duct and long-axis centrifugal fan, using efficient chiller and energy regulation system, and effectively exchange with high-efficiency ventilator to achieve temperature change. By improving the air flow, the air flow rate and the heat exchange capacity with the heater and the air cooler are improved, thereby greatly improving the temperature uniformity of the test chamber.
(2) Heating method: high quality nickel-chromium alloy wire electric heater;
(3) Air cooling mode: multi-stage diaphragm air heat exchanger
1. Refrigeration system and compressor: In order to ensure the cooling rate of the test box and the low temperature of the zui, the test box adopts a set of imported French Taikang compressor cold refrigeration system. The cascade cold system comprises a high temperature refrigeration cycle and a low temperature refrigeration cycle. The connecting vessel is an evaporative condenser. The evaporating condenser is also used for energy transfer. The heat energy in the working chamber is transmitted through the two-stage refrigeration system to achieve the enthalpy temperature. the goal of. The design of the refrigeration system uses energy regulation technology, and an effective treatment method can ensure the energy consumption and cooling capacity of the refrigeration system can be effectively adjusted under the normal operation of the refrigeration unit, so that the operation cost of the refrigeration system And the failure rate drops to a more economical state.
2. Refrigeration working principle: Both high and low refrigeration cycles use reverse card cycle, which consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabatically compressed to a higher pressure by the compressor, and the work is exhausted to increase the temperature of the exhaust gas, and then the refrigerant is heat-exchanged with the surrounding medium through the condenser isothermally, and the heat is transferred to the surrounding medium. After the refrigerant is adiabatically expanded by the valve, the temperature of the refrigerant is lowered. After the zui, the refrigerant absorbs heat from the higher temperature object isothermally through the evaporator, so that the temperature of the object to be cooled is lowered. This cycle is repeated to achieve the purpose of cooling.
3, air conditioning mode: forced ventilation internal balance temperature regulation (BTC). The method means that when the refrigeration system is continuously operated, the control system controls the output of the heater according to the result of the PID automatic calculation output according to the set temperature point, and the Zui finally reaches a dynamic balance. (1) Air circulation device: Built-in air-conditioning room, circulation air duct and long-axis centrifugal fan, using efficient chiller and energy regulation system, and effectively exchange with high-efficiency ventilator to achieve temperature change. By improving the air flow, the air flow rate and the heat exchange capacity with the heater and the air cooler are improved, thereby greatly improving the temperature uniformity of the test chamber.
(2) Heating method: high quality nickel-chromium alloy wire electric heater;
(3) Air cooling mode: multi-stage diaphragm air heat exchanger
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