A vapor compression heat pump cycle requires that the evaporator and condenser operate within 10°C of their respective heat reservoirs. The cycle employs R134a as the working fluid, which exits the evaporator as a saturated vapor and exits the condenser as a saturated liquid. The compressor operates with an isentropic efficiency of 82%. If the desired inside temperature is 21 °C and the outside temperature is 0 °C, determine:

What is a monomer? how do they form a ploymer from the view point of chemical bonding?

A)-explain briefly the importance of standards in engineering design. b)- what is patent? c)-explain the relationship between these standards: b.s. and b.s.en d)- in engineering design concepts, types of loads and how they act are important factors. explain.

Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain