Consider an ice-producing plant that operates on the ideal vapor-compression refrigeration cycle and uses refrigerant-134a as the working fluid. The refrigeration cycle operating conditions require an evaporator pressure of 180 kPa and the condenser pressure of 1400 kPa. Cooling water flows through the water jacket surrounding the condenser and is supplied at the rate of 250 kg/s. The cooling water has a 10°C temperature rise as it flows through the water jacket. To produce ice, potable water is supplied to the chiller section of the refrigeration cycle. For each kg of ice produced, 333 kJ of energy must be removed from the potable water supply.   (Take the required values from saturated refrigerant-134a tables.)   Determine the mass flow rate of the refrigerant, in kg/s. Take cp of water as 4.18 kJ/kg·K. (You must provide an answer before moving on to the next part.)   The mass flow rate of the refrigerant is _________kg/s.

Question

Consider an ice-producing plant that operates on the ideal vapor-compression refrigeration cycle and uses refrigerant-134a as the working fluid. The refrigeration cycle operating conditions require an evaporator pressure of 180 kPa and the condenser pressure of 1400 kPa. Cooling water flows through the water jacket surrounding the condenser and is supplied at the rate of 250 kg/s. The cooling water has a 10°C temperature rise as it flows through the water jacket. To produce ice, potable water is supplied to the chiller section of the refrigeration cycle. For each kg of ice produced, 333 kJ of energy must be removed from the potable water supply.

 

(Take the required values from saturated refrigerant-134a tables.)

 

Determine the mass flow rate of the refrigerant, in kg/s. Take cp of water as 4.18 kJ/kg·K. (You must provide an answer before moving on to the next part.)

 

The mass flow rate of the refrigerant is _________kg/s.

 

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