How to select the refrigerant

in steam tightening machine, refrigerant selection in addition to good thermal properties and physical and chemical properties, more should have good environmental characteristics.

choose skills refrigerant selection is a complex technical and economic problems, many factors to consider, when the choice should be according to the specific situation, technical analysis.

1。 Considering environmental protection requirements.

must conform to the national environmental protection laws and regulations of the refrigerant.

2。 Considering the refrigeration temperature requirements.

according to different coolant temperature and cooling conditions, the selection of high temperature ( Low pressure) , medium temperature ( Medium voltage) And low temperature ( High pressure) Refrigerants. Generally choose the specification of refrigerant evaporation temperature is lower than the refrigeration temperature 10 ℃. Select refrigerant refrigeration equipment cooling conditions should also be considered, such as the use environment. The condensing pressure at work should not be more than tightening machine safety with conditions specified value. Automotive air conditioning can only make a cooling medium car outside air, in the influence of temperature, wind speed, solar radiation, thermal radiation elements such as all the frequent changes, the working condition is determined by it can only choose high temperature ( Low pressure) Refrigerants, choose R12 bag yesterday, now everything is chosen mostly.

3。 Considering the nature of the refrigerant. According to the refrigerant thermodynamic properties, physical properties and chemical properties, choose those non-toxic, blasting, burning the refrigerant; Should choose refrigerant heat transfer is good, small resistance, good compatibility with refrigeration system with material.

4。 Consider tightening machine type. Different cooling of the tightening machine work principle is different. Volumetric tightening machine is a narrowing of the refrigerant vapor volume on the pressure, refrigerant refrigerating capacity per unit volume is big, is generally selected as everything, R22, etc. New working medium are present to suitable for different refrigeration equipment.

the above introduction about how to select the refrigerant is over here, hope to be able to bring you some help, if you have a demand on refrigerant, welcome consultation discussion with us, we wholeheartedly at your service.

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