Adjust the intermediate pressure and intermediate temperature of the chiller reasonably. The intermediate pressure and intermediate temperature are related to the condensing temperature, evaporation temperature and the volume ratio of the high and low pressure machines. It is worth noting that in actual operation, the normal liquid level of the intercooler must be maintained. This not only helps to lower the exhaust temperature of the high-pressure machine and prevent the formation of carbon deposits, but also helps to reduce the temperature of the refrigerant liquid before the throttle valve, increase the unit cooling capacity and improve the coefficient of refrigeration.
The condensing pressure of the refrigeration machine should be compatible with the condensing temperature. If the condensing pressure is too high, it is necessary to check whether the relevant valves of the high-pressure system are open, release air and oil, increase the cooling water volume and cooling air volume, lower the cooling water temperature, reduce the heat load, and rationally configure the condenser.
The evaporation pressure should be adapted to the evaporation temperature. In air conditioning systems and medium-temperature and medium-pressure refrigeration systems, the evaporation pressure is generally higher than the atmospheric pressure, which is conducive to preventing air from entering the refrigeration system. For places that require low temperatures, multi-stage compression refrigerators, cryogenic refrigerators or low-temperature freezers can be selected as refrigeration devices according to the actual situation.
Chillers may be used in many fields. The main application areas include:
The chiller can be used in conjunction with vacuum equipment. This type of chiller also meets the requirements of high-quality vacuum equipment, such as molecular pumps, small vacuum coating machines, etc. Chillers are used in conjunction with semiconductor laser equipment. Due to its special structure, semiconductor laser equipment has high requirements for water quality.
2. The chiller is used in conjunction with medical laser equipment. The unique water quality treatment features of this type of chiller make it an ideal choice for medical laser equipment and laboratory equipment. This series of chillers are also widely used in atomic absorption spectrometers, fermentation equipment, reaction vessels, electrophoresis apparatus, etc
When using a water-cooled machine, it is essential to pay attention to: First, liquid medium should be added to the tank before use. Secondly, the working power supply should be determined according to the model of this machine, and the power of the power supply should be greater than or equal to the total power of the instrument. The power supply must have a good grounding. Thirdly, the chiller should be placed in a dry and well-ventilated area, and the rear side should be 400mm away from obstacles. Finally, after using the chiller, all switches should be turned off. Unplug the power cord and use a suction ball or hose to dry the liquid in the tank.
3. The chiller can be used in conjunction with the experimental condensing equipment. Such as rotary evaporators, distillers and condensers, they feature controllable temperature, stable temperature and high condensation efficiency, which can effectively increase the recovery rate. At the same time, its fluid purification function can prevent the blockage of flow pipelines and the growth of microorganisms.
