Question

A refrigenartion system requires 1.3kw power of refrigenartion rate of 3 kj and heat reaction 60° degree.. Calculate the coefficient of Perfamence and lowest temperature

Answer 1

Answer:

Refrigerator:

A refrigerator is a device that works on the reversed Carnot cycle and extracts heat from a lower temperature body to keep the temperature of the body lower than the surrounding temperature. And by taking work input it transfers heat to the higher temperature body or surrounding.

Refrigerating Effect R.E.= QL

Work input = QH - QL

For a reversible engine,

Calculation:

Given:

RE = Refrigeration effect = 3.5 kW [1 TR = 3.5 kW], Winp = 1.25 kW, TL = 233 K

TH = 316 K

Answer 2

Answer:

Dear Parent,

The school timing from (22/11/2021) Monday onwards will be 8:15 am - 1:30 pm.

The parents of the Supervision students are expected to collect their wards between 1.30pm to 2:00pm

Regards

Team

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