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?

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter22: Condensers

Section: Chapter Questions

Problem 7RQ: When a standard-efficiency air-cooled condenser is used, the condensing refrigerant will normally be...

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