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The fundamental reason for having refrigerator is to keep food cold.Cold temperature help food stay fresh longer. The basic idea behind refrigeration is to slow down the activity of bacteria so that it takes longer for the bacteria to spoil the food.
asked Jun 24 in Electrical by Akhila99
edited Jun 25 by Akhila99 | 56 views

2 Answers

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The refrigeration work on second law of thermodynamics.

Second law of thermodynamics state that " heat cannot flow from colder body to hotter body without any work".

Or

"Heat can flow from high temperature to lower temperature but it cannot flow from lower temperature to higher temperature without any external work".

answered Jun 30 by anonymous
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Second Law of Thermodynamics- It is not possible for heat to flow from a colder body to a warmer body without any work having been done to accomplish this flow. Energy will not flow spontaneously from a low temperature object to a higher temperature object..the Second Law of Thermodynamics states that heat will spontaneously always flow from a hot region to a cold region. ... It is the work done by this compressor (using electrical energy from the household electricity supply) that makes the refrigerator work without violating the Second Law of Thermodynamics.

Ekeeda - Applied Electronics and Instrumentation Engineering

answered Oct 16 by anonymous