1. A REFRIGERATING SYSTEM OPERATES A REVERSED CARNOT CYCLE BETWEEN TEMPERATURES OF 15F AND 128F. IF THE CAPACITY IS 420 000 Btu/hr. DETERMINE THE COP, HEAT REJECTED FROM THE SYSTEM IN kcal/min, THE...

Answer 3problems

Extracted text: 1. A REFRIGERATING SYSTEM OPERATES A REVERSED CARNOT CYCLE BETWEEN TEMPERATURES OF 15F AND 128F. IF THE CAPACITY IS 420 000 Btu/hr. DETERMINE THE COP, HEAT REJECTED FROM THE SYSTEM IN kcal/min, THE NET WORK IN Kw, AND THE НР. 2. A REFRIGERATING SYSTEM OPERTES ON THE REVERSED CARNOT CYCLE WITH A COP OF 4 AND A MINIMUM TEMPERATURE OF 27C. IF THE REFRIGERATING CAPACITY IS 6000 KJ/min, DETERMINE THE MAXIMUM TEMPERATURE IN THE CYCLE, THE HEAT REJECTED AND THE POWER INPUT REQUIRED. 3. A REVERSED CARNOT CYCLE IS USED FOR REFRIGERATION AND REJECTS 200 000 Btu/min OF HEAT AT 152.6F WHILE RECEIVING HEAT AT 450.6R. DETERMINE THE COP, THE POWER REQUIRED IN KJ/min AND THE REFRIGERATING CAPACITY IN TR.