Ground-to-air heat pump

To analyze this type of pump let us consider the example of heat pump with a system of heat take-off from the closed ground (i.e. a cooling medium is circulated in a closed loop, thus taking off the low-grade heat) and with a horizontal ground manifold.

The ground, as known, is the most universal source of dissipated (low-grade) heat, since Continue reading

Operation features of air purgers and liquid separators of ammonia refrigerating machines

4. Air purgers .

The air penetrates into the refrigeration unit system on the low-pressure side when operating at boiling pressure lower than atmospheric one and during repair and maintenance works performance. The air builds up in a condenser and a steam part of linear receiver. The air entrained into the condenser leads to the following negative developments:

Continue reading