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What is the principle of constant temperature and humidity incubator?
The constant temperature and humidity humidification incubator operates through a well-structured refrigeration cycle. The process begins with the compressor, which adiabatically compresses the refrigerant to a higher pressure. This compression increases the refrigerant’s temperature due to the work applied. Next, the high-pressure refrigerant flows through the condenser, where it undergoes isothermal heat exchange with the surrounding environment. During this stage, the heat from the refrigerant is transferred to the ambient medium, allowing the refrigerant to release its thermal energy.
After leaving the condenser, the refrigerant passes through an expansion valve, where it undergoes adiabatic expansion. This rapid reduction in pressure causes the refrigerant's temperature to drop significantly. The cooled refrigerant then enters the evaporator, where it absorbs heat from the object being cooled. This heat absorption lowers the temperature of the object, completing one cycle of the refrigeration process.
This cycle repeats continuously to maintain the desired temperature and humidity levels inside the incubator. The refrigeration system used in this test chamber is based on a fully enclosed compressor unit that uses freon as the refrigerant. The system incorporates energy-adjusting technology, ensuring stable and efficient operation while allowing precise control over energy consumption and cooling capacity. This helps the system operate at optimal performance levels.
To maintain a balanced temperature, the control system continuously monitors the set temperature point. Using PID (Proportional-Integral-Derivative) control, the system automatically calculates the necessary adjustments and regulates the heater output accordingly. This dynamic balancing ensures that the incubator maintains a stable and consistent internal environment, even under varying operational conditions. The entire process is designed for reliability, efficiency, and precision, making it ideal for laboratory and industrial applications requiring strict environmental control.