How big is the expansion valve of the cold storage?

According to your present configuration, the low-temperature semi-closed piston machine with 10 wheel, if the storage temperature is -25℃, the refrigeration capacity is about 5~6kw under the working condition of -32/+35. In fact, the air cooler should be about DJ60, and the 6-ton expansion valve can be selected according to Danfoss. ?

Nominal capacity of thermal expansion valve. ?

Taking the TG valve as an example, the nominal refrigeration capacity of the valve at the top cover of the valve body will be 32Kw, of which 32Kw is the actual refrigeration capacity of R4 10A refrigerant corresponding to the thermal expansion valve, which is measured according to the ASERCOM standard working conditions when the static superheat degree is 4 degrees and the superheat degree is 4 degrees. The capacity of the valve is proportional to the superheat, and the linear adjustable range is 30% ~ 120.

Moreover, the static superheat of the valve can be adjusted within the range of 0~8 degrees, which has a great choice space. At the same time, the test standard is close to the practical application of water-cooled air conditioning units, and the capacity under other working conditions will definitely be very different. The greater the high and low pressure difference, the greater the capacity of the valve.