A 50-ton vapor compression refrigeration system is to evaporate R-12 at -20°C and to  condense it at 40°C. The vertical compressor is to run at 10000 rpm; it is double acting, has the bore equal  to the stroke, and has 10% clearance. Vapor enters the compressor at -10°C and liquid enters the expansion  valve at 30°C. draws the PH and Ts diagram  _____________ 1.1 What refrigeration flow rate is required? _____________ 1.2 What would be the bore and stroke of the compressor? _____________ 1.3 What power is required by the compressor? _____________ 1.4 What is the quantity of the cooling water required in the condenser for a 8-degree  increase in temperature?

A 50-ton vapor compression refrigeration system is to evaporate R-12 at -20°C and to 
condense it at 40°C. The vertical compressor is to run at 10000 rpm; it is double acting, has the bore equal 
to the stroke, and has 10% clearance. Vapor enters the compressor at -10°C and liquid enters the expansion 
valve at 30°C.

draws the PH and Ts diagram 
_____________ 1.1 What refrigeration flow rate is required?
_____________ 1.2 What would be the bore and stroke of the compressor?
_____________ 1.3 What power is required by the compressor?
_____________ 1.4 What is the quantity of the cooling water required in the condenser for a 8-degree 
increase in temperature?