What is refrigerator in thermodynamics?
A refrigerator is a device which is designed to remove heat from a space that is at lower temperature than its surroundings. The same device can be used to heat a volume that is at higher temperature than the surroundings. In this case the device is called a Heat Pump.
On which law of thermodynamics does a fridge work?
Figure 1: According to the Second Law, all refrigerators must have work done on them in order for heat to flow from a cold body to a hot body. The Second Law of Thermodynamics describes the limitations of heat transfer.
Do refrigerators increase entropy?
Notice which way the heat flows here. From the refrigerator (cold) to your kitchen (warm). Entropy increases when heat flows from warm to cold. So here, when heat flows from cold to warm, it must decrease! Another apparent violation of the second law of thermodynamics.
Do refrigerators violate the second law of thermodynamics?
Refrigerators appear to violate the Second Law of Thermodynamics, but the key reason they do not is because of the work needed as input to the system. They are essentially heat pumps, but work to cool a region instead of heat it.
What is the second law of thermodynamics?
The law describes the relationships between thermal energy, heat and other form of energy affects matter. Why did we talk about thermodynamics? Because the refrigerator is formed by the second law of thermodynamics. The second law of thermodynamics is talked about the quality of energy.
What is the working principle of refrigerator?
The refrigerator works on the basics of second law of thermodynamics. 1. Motor: In refrigerator, motor is used to drive the compressor. The commonly used motors are induction motor, synchronous motor, asynchronous motor.
How many laws of thermodynamics are there?
There are four laws of thermodynamics. The law describes the relationships between thermal energy, heat and other form of energy affects matter. Why did we talk about thermodynamics?