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The evaporator coil is the component in your AC system that absorbs the heat from the air inside your home. It is often either attached to your furnace or located on the inside of your air handler. It works with a condenser coil to complete the heat exchange process that produces cool air.
What is the main purpose of an evaporator?
The main job of the evaporator coil is to cool the refrigerant so that it can absorb the heat. As the fan blows air over the coil, the refrigerant becomes cold and turns into a vaporous state.
What is the function of evaporator in refrigeration?
Evaporator: This is the part of the refrigeration system that is doing the actual cooling. Because its function is to absorb heat into the refrigeration system (from where you don’t want it), the evaporator is placed in the area to be cooled.
What is the purpose of the evaporator quizlet?
THE EVAPORATOR IS A DEVICE FOR ABSORBING HEAT INTO THE REFRIGERATION SYSTEM AND IS NAMED FOR THE REFRIGERANT EVAPORATION TAKING PLACE INSIDE IT.
What is the purpose of the evaporator in the refrigeration system quizlet?
What is the purpose of the evaporator in the refrigeration system? The evaporator absorbs heat out of the product and into the refrigeration system.
What is the difference between evaporator and condenser?
The evaporator coil is the part of an air-conditioning system that removes heat and moisture from indoor air to cool it. The condenser coil takes that heat and releases it outside.
What is the purpose of multiple passes in a chiller evaporator?
34 Cards in this Set Reciprocatingcompressor capacity is usually accomplished? Unloaders What is the purpose of multiple passes in a chiller evaporator? Lower approach temperature What compressors are used on low pressure chillers? Centrifugal TXV metering devices are used on low pressure chillers. True or False? No.
What is the purpose of epoxy coating on evaporator coils quizlet?
What is the purpose of epoxy coating on evaporator coils? When an evaporator coil gets dirty: The temperature drop across the coil decreases.
How an evaporator can dehumidify the air?
Evaporators are very cold. when the fan blows air into them, it causes the water vapor to become liquid drops. Just like a glass of ice water! The droplets are then drained from the system and the air is less humid.
What two things does the evaporator do to the air in the space it is conditioning?
The evaporator does the exact opposite of the condenser. Instead of turning the refrigerant from gas to liquid, it turns the refrigerant from liquid to gas (thus the name “evaporator”). Instead of expelling heat, it absorbs heat and turns the air cold around it. This is where the “conditioning” of the air occurs.
What is the condition of the refrigerant when it is in the evaporator?
As its name implies, refrigerant in the evaporator “evaporates”. Upon entering the evaporator, the liquid refrigerant’s temperature is between 40° and 50°F; and without changing its temperature; it absorbs heat as it changes state from a liquid to a vapor.
Which component regulates the flow of refrigerant into the evaporator?
The Thermal Expansion Valve function is the control the flow of refrigerant into the evaporator in response to the cooling load.
Is an evaporator a compressor?
Evaporator coils contain the system’s refrigerant as it converts from liquid to gas. The gaseous refrigerant moves to the outdoor unit. Condenser coils in the outdoor unit house the refrigerant during its return to liquid form. The compressor increases pressure on the gas, causing it to condense into liquid.
Is the evaporator the cold side?
Your Evaporator Coil: The Cold Side This valve receives high-pressure liquid refrigerant from the outdoor condenser. It relieves the pressure on the refrigerant, further cooling it. The cold liquid refrigerant then flows into the evaporator coil.
What is evaporator made of?
Evaporator coils are made from copper, steel, or aluminum because these metals conduct heat easily. Most residential AC evaporators consist of tubes bent into U-shapes and set into panels.
What is evaporator approach?
Evaporator approach is the difference between evaporating temperature measured at the well in the evaporator, and leaving chilled water temperature. Evaporator approach can be used to evaluate the refrigerant charge. In a 1 pass evaporator, approach should be 10° to 14°.
What is DX evaporator?
An evaporator or direct expansion (DX) coil works on the “refrigeration effect”. Most refrigeration systems use a refrigerant expansion control valve at the evaporator coil to senses the temperature of the gaseous refrigerant leaving the coil, so as to regulate the amount of liquid refrigerant entering the coil.
What is plate evaporator?
Plate Evaporator is a type of evaporator in which a thin film of liquid is passed and flows between the plates for the process of evaporation. The Plate Evaporators are also known as the gasketed plate and frame evaporators.
What is the purpose of epoxy coating on evaporator coils?
Because they are thicker, epoxy coatings will reduce heat transfer from the air to the refrigerant in the coil, and thus cause a decrease in system efficiency and capacity. Epoxy coatings might best suit new installations where heat transfer losses are accounted for in the system design specifications.
What type of heat does the evaporator absorb?
The evaporator works the opposite of the condenser, here refrigerant liquid is converted to gas, absorbing heat from the air in the compartment.
What is the main purpose of the fins on finned tube evaporators?
The fins on a coil accomplish two major functions: they straighten the air out as it comes in contact with the entering-air side of the coil, and they perform some of the heat transfer. Understand the basics of finned tube coils and maximize coil capacity and efficiency.
