Refrigeration unit in artificial environment simulation laboratory

Refrigeration unit in artificial environment simulation laboratory The artificial environment simulation laboratory can simulate the temperature and humidity environment, as well as the climatic environment of rainfall, snowfall, sunshine, wind, sand and dust. The laboratory can be applied to the environmental adaptability testing of basic materials, structural parts and large-scale integral parts in the fields of automobiles, wind power, building materials, electricity, communications, textile and agriculture. It can simulate various extreme climatic and environmental conditions (high and low temperature, sunshine, wind, rain, snow, etc.) according to user needs, and collect test data in real time, generate visual and graphical analysis reports. This article introduces the choice of refrigeration unit in the laboratory. 1. Small artificial environment simulation laboratory Using digital scroll, piston refrigeration compressor Features: 1) Digital scroll refrigeration compressor It has the advantages of novel structure, precision, small size, low noise, light weight, small vibration, low energy consumption, long life, continuous and stable gas transmission, reliable operation, clean air source, etc. 2) Piston refrigeration compressor ① Can adapt to a wider pressure range and cooling capacity requirements; ②The thermal efficiency is high, and the unit power consumption is relatively small, especially when it deviates from the design conditions; ③ Low requirements on materials, more common steel materials are used, the processing is easier, and the cost is lower; ④It is relatively mature in technology, and has accumulated rich experience in production and use; ⑤ The device system is relatively simple. 2. Large and medium-sized artificial environment simulation laboratory Use screw refrigeration compressor Features: 1) Simple structure, few moving parts, less wearing parts, low failure rate and long service life; 2) The circular motion is stable, there is no "surge" phenomenon during low-load operation, the noise is low, and the vibration is small; 3) The compression ratio can be as high as 20, and the EER value is high; 4) Convenient adjustment, stepless adjustment within the range of 10% -100%, high efficiency at part load, and significant power saving; 5) Small size and light weight, can be built into a fully enclosed large capacity unit; 6) Not sensitive to wet stroke; 7)It is operated under positive pressure, and there is no problem of external air intrusion and corrosion. 8)3. Super large artificial environment simulation laboratory 9)Using centrifugal refrigeration compressor 10)Features: 1) Small outline size, light weight and small footprint; 2) Good dynamic balance and low vibration; 3) The centrifugal compressor has a simple and compact structure, few moving parts, reliable operation, durability, and low operating cost; 4) High heat transfer performance; 5) It is easy to realize multi-stage compression and throttling, realize multiple evaporation temperatures, and make the power consumption lower; 6) There is very little lubricant mixed in the centrifugal unit, which has little effect on the heat transfer effect of the heat exchanger, and the unit has high efficiency; 7) The stepless adjustment can be carried out economically; 8) High speed, high requirements on the shaft end seal; 9) Large cooling capacity and low noise; 10) Balanced operation, reliable operation, high operation rate, low maintenance costs and fewer personnel

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