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What is the expected temperature drop through a direct expansion evaporator coil is?
Wiki User
∙ 9y ago
The expected temperature drop through a direct-expansion evaporator coil is 20°F. The evaporator coil became clogged during the adjustment period.
Wiki User
∙ 9y ago
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Do all solids expand by the same amount when heated through same temperature?
no , all solids do not expand by the same amount when heated through same temperature. it depends upon the coefficient of its linear expansion. We define avergae co-efficient of linear expansion in the temperature range deltaT as α=(1/L)(ΔL/ΔT) where L is initial length of the solid at the temperature T.. It varies from material to material , higher the value of alpha , it expands more..
What is the evaporator coil?
An evaporator coil is a vital part of any heating or cooling system. It is usually found in an air conditioner, because evaporator coils are particularly good at absorbing heat when air is passed through their system. Evaporator coils look like a series of pipes.
Why does sound travel faster through hot water?
equation for speed of sound in a medium: c=sqrt(B/rho) B=bulk modulus rho=density all else being constant, and increase in temperature will cause an expansion (usually) of the material. The expansion will decrease the density (mass per unit volume) and thus increase the speed of sound through the material.
What role does an evaporator coil perform?
The evaporator coil places a big role in your home's air supply. When the coils expand, cold air pumps through the coils, traveling into the system to keep a hot/cold balance in the home.
What is apparent and real expansion of liquids expansion?
Apparent expansion of a liquid is the increase in volume which appears to have taken place if no notice is taken. Real expansion is the actual increase in volume of a liquid per unit volume per degree rise in temperature
Dry expansion evaporator?
In dray expansion evaporator, the liquid refrigerant is generally fed by an expansion valve. the expansion valve controls the rate of flow of refrigerant to the evaporator. In the evaporator the liquid refrigerant is vaporized and superheated by the time it reaches to the end of evaporator. At inlet of the evaporator, the refrigerant is predominantly in the liquid form with a small amount of vapor formed as a result of flashing at the expansion valve. the liquid refrigerant passes through the evaporator, more and more refrigerant is vaporized by the load. according to the load, the liquid will come into evaporator and vaporize and reaches to superheat at the end of the evaporator. The inside of the evaporator is far from dry but wetted with liquid so named as dry expansion evaporator.
What role does a compessor play in a refrigeration system?
In vapour compressor refrigeration system the low pressure and temperature vapour refrigerant from evaporator is compressed. where it is compressed to a high pressure and temperature. From compressor refrigerant goes to condenser where where it changes the phase. from condenser refrigerant goes to evaporator through expansion device.
Where is the expansion valve on your Toyota Corolla?
next to the evaporator core, under the dash. Access it through the passenger footwell
Function of evaporator condenser expansion valve and condenser?
Condesor- cools the liquid formed gas after compressor compresses. After condensor it pass through the expansion valve, then again liquid formed gas expanses to gas form and produses cooling .this cooled gas then passes through the evaporator coils
Where is the AC expansion valve located on a 1990 Toyota Camry?
the expansion valve is sandwiched between the a/c evaporator and the pipe assembly that the refrigerant passes through. the evaporator is inside the heater/cooler assembly under the dashboard. (not an easy fix for the uninitiated)
What Is Hissing Sound When Air Conditioning Is On?
Refrigerant flowing through the system. Focused on the expansion device at the start of the evaporator coil.
Where is the expansion valve on my 1994 Toyota Camry?
The expansion valve is located inside the evaporator core housing on the evaporator core. If you see the large and small pipes coming through the firewall on the passenger side of the engine compartment and trace them into the plastic box behind the glove box, you will find the evaporator core inside this box and the expansion valve is the little aluminum block that is in between those pipes and the evaporator core. It should have a little quarter- like bell on the rear of it. Hope this helps and is in time.
How is the temperature drop through a direct expansion coil on an air conditioning system determined?
It is determined through measurement and temperature.
How do you measure environmental temperature using a liquid in glass thermometer?
through thermal expansion
What is termal expansion?
tendency of matter to change in volume in response to a change in temperature, through heat transfer.
Does refrigerant enter the compressor as a low temperature low pressure gas?
Yes. The basic components of the refrigeration system are the refrigerant, compressor, condenser and receiver, expansion device and the evaporator. One cycle: Refrigerant travels to Compressor (A) to Condenser (B) to Expansion device (C) to evaporator (D). The refrigerant gas at low pressure and temperature is drawn into the compressor. The gas is compressed to a higher pressure, which causes an increase in the temperature. The refrigerant gas at a high pressure and temperature passes to the condenser (point B), where it is cooled (the refrigerant gives up its latent heat) and then condenses to a liquid. The high pressure, low temperature liquid is collected in the receiver. The high pressure liquid is routed through an expansion valve (point C), where it undergoes an abrupt reduction in pressure. That pressure reduction causes part of the liquid to immediately vaporize or flash. The vapor and remaining liquid are cooled to the saturation temperature (boiling point) of the liquid at the reduced pressure. At this point most of the refrigerant is a liquid. The boiling point of the liquid is low, due to the low pressure. When the liquid refrigerant enters the evaporator (point D), it absorbs heat from the process and boils. The refrigerant gas is now at low pressure and temperature, and enters the suction side of the compressor, completing the cycle.
What is an evaporator and what does it do?
The evaporator is the heat exchanger in the dashboard duct-work that gets cold when the A/C cycle is running. A warm liquid refrigerant under pressure expands across the "expansion valve" as it enters the evaporator, and becomes a (very) cold gas. Cabin air or outside air (recirc or ventilate) blows through the other side of the evaporator eat exchanger with the aid of fans, transfers cabin heat to the "evaporator" and the evaporates (boils at a very low temperature) the coolant. Air leaving the evaporator and coming through the ducts is now cold and the refrigerant gas leaving the evaporator is "warm". The whole cycles contains the following major devices. 1) The refrigerant compressor, run by the engine of the car by belt, (with a clutch so it can be switched off and on as required0 2) The condenser, a heat exchanger usually mounted in front of the radiator that transfer heat from the refrigerant to the air. 3) The receiver ( a small reservoir) that holds a small amount of refrigerant and usually has some form of drier chemical in it to absorb moisture (if present) in the refrigerant. It sometimes has combined pressure and temperature switches mounted on it. 4) The expansion valve and tube, warm liquid expands into a cold gas and enters the evaporator. 5) The evaporator is the heat exchanger that absorbs the heat from the cabin air and boils the refrigerant So the cycle, more or less is, starting at the compressor suction (low side); Compressor, compresses warm gas at a low pressure to a hot gas at a high pressure, send to condenser. Condenser, cools a hot gas at a high pressure and it condenses it to a warm liquid at a high pressure, send to expansion valve. Expansion Valve, expands the high pressure warm liquid to a low pressure cold gas, send to evaporator. Evaporator, transfers heat (from the air) to the low pressure cold gas and warms that to a low pressure warm gas, send to compressor.
