What is the function of refrigerator?
What is the function of refrigerator?
The fundamental reason for having a refrigerator is to keep food cold. Cold temperatures help food stay fresh longer. The basic idea behind refrigeration is to slow down the activity of bacte- ria (which all food contains) so that it takes longer for the bacteria to spoil the food.
What is a refrigerator 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. Effectively any heat engine cycle, when reversed, becomes a refrigeration cycle.
What is refrigeration simple words?
Refrigeration, or cooling process, is the removal of unwanted heat from a selected object, substance, or space and its transfer to another object, substance, or space. Removal of heat lowers the temperature and may be accomplished by use of ice, snow, chilled water or mechanical refrigeration.
Is a refrigerator adiabatic?
A refrigerator or air conditioner consists of a fluid pumped through a closed system. This is essentially an adiabatic expansion – the fluid vaporizes and cools down. The cool gas is colder than the inside of the fridge, so heat is transferred naturally from the fridge to the gas.
What are the basic parts of refrigerator?
The main working parts of a refrigerator include: a compressor, a condenser, an evaporator, an expansion valve, and refrigerant.
How is a refrigerator an example of thermodynamics?
According to the Second Law of Thermodynamics, heat will always flow spontaneously from hot to cold, and never the other way around. A refrigerator causes heat to flow from cold to hot by inputting work, which cools the space inside the refrigerator.
What are the types of refrigeration?
4 Types of Refrigeration Systems
- Evaporative Cooling. Evaporative cooling units are also referred to as swamp coolers.
- Mechanical-Compression Refrigeration Systems. Mechanical compression is used in commercial and industrial refrigeration, as well as air conditioning.
- Absorption.
- Thermoelectric.
What are different applications of refrigeration?
Applications of Refrigeration in 7 Different Industries
- District Cooling.
- Electricity Production.
- Chemical and Petrochemicals.
- Pharmaceutical.
- Food & Beverages.
- Data Centres.
- Other industries.
How is refrigerator cop calculated?
For a refrigerator the coefficient of performance is COP = Qlow/(-W). Details of the calculation: (a) COP = Qlow/(-W). (-W) = Qlow/COP = 120/5 J = 24 J.
What are the major components of a refrigerator?
The 4 Main Refrigeration Cycle Components
- The compressor.
- The condenser.
- The expansion device.
- The evaporator.
How does thermodynamic system work in a refrigerator?
Typically the thermodynamic system in a refrigerator analysis will be a working fluid, a refrigerant, that circulates around a loop, as shown in Figure 3.7. The internal energy (and temperature) of the refrigerant is alternately raised and lowered by the devices in the loop.
Where does the energy from a refrigerator go?
It is at this point where the internal energy of the contents of the refrigerator and the energy used to drive the compressor or pump are transferred to the surroundings. The refrigerant then continues on to the turbine or expansion valve, repeating the cycle. Next: 3.5 The Internal combustion Up: 3.
How does the freezer work in a refrigerator?
The freezer is surrounded by the evaporator tube. When we keep something on the refrigerator, the evaporator tube absorbs the heat from the object. Then the liquid refrigerant is converted into vapor. The vapor is compressed by the compressor to high pressure and temperature.
What are the different uses of a refrigerator?
Applications of Refrigerator 1 Refrigerator is used in the processing and preservation of food items. 2 Refrigerator is used in industrial applications like in chemical and petroleum industry. 3 Some special kind of applications. 4 In food processing and preservation
