Evaporator is that part of mechanical refrigeration system or Vapour compression refrigeration system.The Evaporator work on liquid to convert vapour refrigerant.There are two different types of the Evaporator Air cooling coil and Liquid cooling coil or chiller.
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| Figure show - cooling coil or evaporator |
What is a Evaporator
Evaporator is that part of mechanical refrigeration system or Vapour compression refrigeration system. Which liquid refrigerant or gas Evaporates to be vaporized( inside of the tube) in an enclosed space by absorbing heat of warm materials or Substance placed around it. the Vaporized is a couses cooling.
How does a evaporator work
The Basic working principle of the, Evaporator Receive liquid refrigerant or gas from the Expansion valve at low pressure and low temperature liquid refrigerant to Evaporate (by the absorb latent heat from enclosed space or room, by the help of air and liquid or brine) then liquid refrigerant is Evaporated to vaporized inside the Evaporator Convert vapour at to lower pressure and lower temperature vapour refrigerant through the suction line of Accumulator, the compressor.
Installed or fitted of the evaporator
The Evaporator Installed of the, between Expansion valve and accumulator, compressor. the Expansion valve outlet pipe are connected to the Evaporator inlet pipe and The Evaporator outlet pipe are connected to the compressor inlet pipe in the mechanical refrigeration system or Vapour compression refrigeration system.
Figure show - Installation of the Evaporator
Where is the evaporator used
Use Or application of the, Evaporator is both domestic and commercial refrigeration and air conditioning system, HVAC system.The Commercial, plants uses Evaporator is known as ‘‘chiller’’.
what is Domestic and domestically used equipments or system ?
Domestic is know as house hold like Refrigerators, bottle coolers,water cooler, deep freezes, window ac, split ac etc. The small and medium capacity of the tonnage are used is called a domestic.
What is commercial and Commercially used to system?
commercial is know as large area(refrigerated space) or plant to be cooled like a commercial refrigeration system, truck or contener refrigeration system, ice cream plants, bus air conditioning, train air conditioning, commercial air conditioning system, central air conditioning plants, HVAC system, chilled water flows system etc. The medium and large capacity of the tonnage are used is called a commercial.
Types of the evaporator
. Air cooling coil Or evaporator (Direct system)
. Liquid cooling coil or chiller (Indirect system)
What is Air cooling coil Or Evaporator (Direct system or direct expansion system)
In air cooling coil Or Direct system of the evaporator is that cooling in the primary Refrigerant by the help of natural convection air (only natural air) and force convection air(uses in fan Or blower) directly in an refrigerated space is called.
The Air cooling coil Or air cooled evaporator Direct system is know as direct expansion system.The evaporator function are same of the air cooling coil or Evaporator direct system or direct cooling system.
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| Figure show - air cooling coil or evaporator |
Which type of expansion valves used to air cooling coil Or direct system (direct expansion system)
The system used to expansion valves or refrigerant control device like a Thermostatic expansion valve, automatic expansion valve, Capillary tube used small capacity of the machine like a refrigerators, split ac, window ac, water or bottle coolers etc. the large capacity of the machine or system used to expansion valve like high side float valve and low side float valve.
Air cooling coil Or evaporator (Direct system or direct expansion system) used
This types of evaporators are generally used in both domestic and commercial refrigeration and air conditioning system. For Example, Refrigerators, bottle coolers, visible coolers, Deep freezers, windows ac, split air conditioner, HVAC system, central air conditioning plants, small refrigeration and air conditioning plants etc.
What is Liquid cooling coil Or chiller (Indirect system or indirect expansion system)
The Liquid cooling coil or indirect system is that in which an evaporator or chiller is used secondary refrigerant to cool of liquid or brine and this cool liquid or brine is further used to cool other substance like a refrigeration and air conditioning loads.
In this system the evaporator is known as a ‘‘chiller’’.
The liquid cooling coil Or chiller indirect system is known as indirect Expansion system.The evaporator or chiller function are same as The liquid cooling coil Or chiller indirect system.
Which type of expansion valve is used to liquid cooling coil Or chiller (indirect system or indirect expansion system)
In the indirect expansion system the expansion valve or refrigerant control device is used to like a Thermostatic expansion valve, hand operating expansion valve, low side and high side float valve or expansion valve, electronic expansion valve, other one of the solenoid valve.
liquid cooling coil Or chiller (indirect system or indirect expansion system) used
This types of system is generally used in commercial Refrigeration and air conditioning plants. For example, ice factories, ice cream plants, ice candy plants, large air conditioning plants and central air conditioning plants etc.
classification of the Air cooling coil Or evaporator (Direct system)
The air cooling coils are further classified as the
. dry Expansion type evaporator (Dry system)
Figure show - dry expansion type Evaporator
. Flooded Expansion type evaporator ( flooded system)
Figure show - flooded expansion type evaporator
Types of the construction in air cooling coil Or evaporator (direct system)
Evaporators are constructed in a variety of ways to suit various requirements. Some of the important types are below :
. Bare Tube Evaporator
. Plate Surface Evaporator
. Finned Tube Evaporator
. Plate Tube Evaporator
Classification of Liquid cooling coil Or chiller (Indirect system)
The water cooling coils are further classified as the
. dry Expansion type chiller(shell and tube type)
. Flooded Expansion type chiller(shell and tube type)
Types of construction in liquid cooling coil Or chiller ( indirect system)
The liquid cooling coil Or chiller are constructed in the variety of ways to various requirements are :
. Shell and tube type chiller
. Shell and coil Type chiller
. Double Pipe Type chiller
. Plate type heat exchanger (chiller)
Related links :-
. What is difference between Evaporator and Condenser
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