Specify The C.O.P. of the cycle refrigeration vapor compression a simple R-717. Temperature evaporation is -20 °C and the temperature of the condenser is 30 °C

Four methods for controlling head pressure in an air-cooled condenser are ______, ______, _______, and

The subcooling temperature in a condenser can be measured by taking the difference between the A. suction pressure converted to temperature and the boiling refrigerant. B. boiling temperature and the condensing temperature. C. condensing temperature and the leaving-refrigerant temperature. D). condensing temperature and the entering-refrigerant temperature.

A typical temperature relationship between a high-efficiency condenser and the ambient temperature is A. 10F. B. 20F. C. 30F. D. 40F.