The operation of the temperature and humidity vibration test box is inseparable from the refrigeration system and the dehumidification system. The cooling and dehumidification system of the test box will be described one by one for everyone. Refrigeration compressor: A refrigeration system composed of semi-closed industrial compressor units produced by the French "Taikang" or the German "Bizel" company. This type of compressor has a large cooling capacity, low noise, low energy consumption, high efficiency, and can operate for a long time, stable and reliable; the refrigeration system also uses advanced PLC control, and the energy-regulated cold-end output mode exceeds the traditional cooling. The thermal balance control method meets the requirements through PID adjustment, which greatly reduces the user's cost of use, extends the service life of the equipment, and improves the economics of the equipment; it is beneficial to reduce the noise of the equipment and improve the working environment of the laboratory. Refrigeration evaporator and smooth tube dehumidifier adopt American complete equipment, one-side welding, cold expansion; Cooling method: air-cooled or water-cooled (when water-cooled, water temperature ≤ 25 ℃, water supply pressure should be 0.15Mpa ~ 0.3Mpa); main Refrigeration accessories: solenoid valves, globe valves, filters, pressure controllers, oil separators, plate heat exchangers, etc. all use imported brand-name products. Refrigerant: using environmentally friendly refrigerant R404A, using high-quality oxygen-free copper tube, nitrogen-filled welding process (traditional method uses ordinary copper tube, direct welding method, it is easy to cause oxide on the inner wall of the copper tube, causing refrigeration system blockage, so that the test box does not cool down Or slow down)
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