The refrigeration and heating thermostat is a high and low temperature temperature control system commonly used in the chemical industry. It can refrigerate and heat reactors, reactors, fer...View details
As we all know, the low temperature chiller is a kind of professional refrigeration design widely used in industry. Although it can provide an effective cryogenic environment, there are some abnormal phenomena in over-refrigeration. Usually, the lowest temperature of the low temperature chiller can only reach – 40 degrees. The main reason is limited by the limit operating conditions of single-stage piston compressor. If the evaporator temperature of the chiller is too low, the following problems will arise when it exceeds the limit operating conditions.
If the low temperature chiller is excessively refrigerated, it will have a great impact on the use function of the low temperature chiller product itself. The actual compression process deviates from the equal compression process to a great extent. The compressor gas transmission coefficient of the chiller decreases, and the compressor gas transmission capacity will be greatly reduced. This is very disadvantageous to the service life of the low temperature chiller products.
If the low temperature chiller is over-refrigerated for a long time, the influence on the compressor inside the low temperature chiller can not be ignored. When the compressor is over refrigerated, the exhaust temperature of the compressor is too high, and the lubricating oil on the cylinder surface of the compressor becomes thinner, which makes the lubricating condition worse. It may even cause the carbonization of lubricating oil, the phenomenon of cylinder pulling and the improper sealing of valve plates.
Heating cooling circulator is a process that refrigerant transfers heat from low temperature state to high temperature state, so that its cooling can reach the state of low temperature envi...View details
In the pharmaceutical and biochemical industry, the fermentation tank needs to be equipped with a heating, cooling and temperature control system to control the temperature in the ...View details
In recent years, China's economy has continued to grow. Under the development opportunity of professional high and low temperature integrated machines, laboratory scientific and technologic...View details