What is the function of the evaporation in a refrigeration or air conditioning system?

1 Answer

Answer :

The three main functions of the evaporator are to:a. absorb heat from the medium being cooled.b. allow the heat to boil off the liquid refrigerant to a vaporc. allow the heat to superheat the refrigerant vapor

Related questions

Description : Air refrigeration cycle is used in (a) domestic refrigerators (b) commercial refrigerators (c) air conditioning (d) gas liquefaction

Last Answer : Ans: d

Description : The benchmarking parameter for air conditioning equipment is a) kW/Ton of Refrigeration b) kW/ kg of refrigerant handled c) kcal/m3 of chilled water d) Differential temperature across chiller

Last Answer : kW/Ton of Refrigeration

Description : The benchmarking parameter for air conditioning equipment is a) kW/Ton of Refrigeration b) kW/ kg of refrigerant handled c) kcal/m3 of chilled water d) Differential temperature across chiLLER

Last Answer : kW/Ton of Refrigeration

Description : Which of the following is a source of emissions leading to the eventual formation of surface ozone as a pollutant? (A) Transport sector (B) Refrigeration and Air conditioning (C) Wetlands (D) Fertilizers

Last Answer : (A) Transport sector 

Description : Which is the source of chlorofluorocarbons? (A) Thermal power plants (B) Automobiles (C) Refrigeration and Air-conditioning (D) Fertilizers

Last Answer : (C) Refrigeration and Air-conditioning 

Description : Reducing suction pressure in refrigeration cycle (a) lowers evaporation temperature (b) increases power required per ton of refrigeration (c) lowers compressor capacity because vapour is lighter (d) all of the above.

Last Answer : Ans: d

Description : For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphereis high, then (a) bigger cabinet should be used (b) smaller cabinet should ... tight vapour seal should be used (d) refrigerant with lower evaporation temperature should be used

Last Answer : Ans: c

Description : The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy-diagram represents (a) condensation of the refrigerant vapour (b) evaporation of the refrigerant liquid (c) compression of the refrigerant vapour (d) metering of the refrigerant liquid

Last Answer : Ans: b

Description : Can Arduino be used for building a smart air conditioning system?

Last Answer : Yes, Arduino can be used for building a smart air conditioning system by using sensors to measure temperature and humidity, and by using actuators to control the air conditioning system, and by using communication modules to transmit data to a mobile app or a control system to optimize energy usage.

Description : How does adding energy into a system cool it down? (How does air conditioning work)?

Last Answer : I'm not 100% on how an A/C works, but I do know a basic concept of how adding energy will actually cool something. Every molecule will become a liquid at some temperature (EVERYTHING). For some molecules ... out of your A/C. The side that faces outside actually pumps out quite a bit of hot air.

Description : What is the most common problem of air failure on an air conditioning system?

Last Answer : The evaporator coil may be frozen making the AC freeze up or a blocked vents and ducts, dirty filters or faulty fan can also be the cause of insufficient airflow.

Description : How to install a Central Air Conditioning System?

Last Answer : Most new homes in the United States are built with central airconditioning systems installed during their construction. Whilemany older homes do not have these systems, it is not difficult toinstall a central ... the system, and the homeowner's budget. Once the system hasbeen chosen, the first ste

Description : How can I service my air conditioning system?

Last Answer : Contact the company which installed your air conditioning system. From there, request to have a service man come out and check that your air conditioning system is functioning properly.

Description : How big of an air conditioning system does a 4000 square foot house need?

Last Answer : To conserve energy I would buy one conditioning unit but add more ducts through out the house. It would save energy and it would save more money on installation.

Description : How much does a heating and central air conditioning system, when you start from scratch?

Last Answer : From what I know they are cheap to purchase, but you need to take into account you will be paying for them on a monthly basis. Which means if you run your air all the time you will be ... run out air in California straight during the summer it's pretty pricey, but this is also California pricing.

Description : Air refrigeration cycle is used in (a) domestic refrigerators (b) gas liquefaction (c)commercial refrigerators (d) Chillers

Last Answer : Ans: b

Description : Air refrigeration operates on (a) Carnot cycle (b) Reversed Carnot cycle (c) Rankine cycle (d) Brayton cycle.

Last Answer : Ans: d

Description : Refrigeration in aeroplanes usually employs the following refrigerant (a) Co2 (b) Freon-11 (c) Freon-22 (d) Air

Last Answer : Ans: d

Description : Pick out the wrong statement. (A) Economy of a multiple effect evaporator is not influenced by the boiling point elevation (B) Two identical cubes of iron and copper will have the same heat ... in the field of refrigeration (D) Finned tube heat exchangers are suitable for heating air by steam

Last Answer : (B) Two identical cubes of iron and copper will have the same heat content under the same conditions of temperature

Description : Domestic refrigerator usually works on the __________ refrigeration cycle. (A) Carnot (B) Air (C) Absorption (D) vapour-ejection

Last Answer : (C) Absorption

Description : Which of the following has the minimum value of COP for a given refrigeration effect? (A) Reverse Carnot cycle (B) Ordinary vapour-compression cycle (C) Vapour-compression process with a reversible expansion engine (D) Air refrigeration cycle

Last Answer : (D) Air refrigeration cycle

Description : Out of the following refrigeration cycles, which one has the minimum COP (Co-efficient of performance)? (A) Air cycle (B) Carnot cycle (C) Ordinary vapour compression cycle (D) Vapour compression with a reversible expansion engine

Last Answer : A) Air cycle

Description : Out of the following refrigeration cycles, which one has maximum COP? (A) Air cycle (B) Carnot cycle (C) Ordinary vapor compression cycle (D) Vapor compression with a reversible expansion engin

Last Answer : (B) Carnot cycle

Description : Air-refrigeration cycle (A) Is the most efficient of all refrigeration cycles (B) Has very low efficiency (C) Requires relatively large quantities of air to achieve a significant amount of refrigeration (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

Description : The following cycle is used for air craft refrigeration  (a) Brayton cycle  (b) Joule cycle  (c) Carnot cycle  (d) Bell-Coleman cycle  (e) Reversed-Brayton cycle.

Last Answer : Answer : e

Description : For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because (A) Water has a high latent heat of evaporation (B) Lewis number is close to unity (C) They are always equal under all circumstances

Last Answer : (A) Water has a high latent heat of evaporation

Description : Our air conditioning compressor went out. The bedrooms are hot now.What is a decent air conditioning brand?

Last Answer : Why not just replace the compressor on the unit you have right now?

Description : Teenager, obsessed with laundry and air conditioning smells. Can anyone relate?

Last Answer : Not odd at all. I too love many of those scents. My daughter (also a teenager) loves the smell the clothes dryer vent gives off. Scent can be very powerful in terms of evoking certain emotions. And hey… Welcome to Fluther!!

Description : Are commercial air conditioning units superior to home units?

Last Answer : Commercial units usually are rated at a higher BTUs than home units. And the larger the unit, the more efficiently the unit cools without running constantly, so they don't work as hard. ... coils which makes for more efficiency since the heat gathered from inside can be dissipated outside quicker.

Description : Do you think that in hot climates, jails and prisons should have air conditioning?

Last Answer : Large swamp coolers would suffice, if the climate is dry enough. Otherwise, the prison could be built underground.

Description : Do you have any schedule or rules regarding your air conditioning use?

Last Answer : answer:I am, for the first time in my life, living in an AC compromised situation. It can get very hot here, 100+ at times, but it is a dry heat and usually doesn't last more than a ... hot tub cold all summer. Nothing better than immersing yourself in cool water to take down your core body temp.

Description : How effective would a normal refrigerator be as a replacement for air-conditioning?

Last Answer : Not very, the fridge is designed to cool a small area not a whole room. It also does not circulate air. You’ll likely end up burning out the compressor before you notice any cool air.

Description : Do you wait until your outside air conditioning unit dies, or do you go ahead and replace it knowing it is on its last leg?

Last Answer : answer:I would start shopping for a new AC, but I would try to hold out until Autumn when the temps start to fall to put it in if possible. Then you would have the best chance of getting a new AC ... early, you could end up sweating or paying a premium to get if fixed the hottest week of the year.

Description : Why do you get sick if you have a fan or air-conditioning on while you sleep?

Last Answer : I think the air stirred up, circulates germs, especially if the fan is blowing towards you.

Description : Can someone help me with some air conditioning questions? (Details follow)

Last Answer : answer:There are newer A/C units that mount on the walls of rooms inside the house. Some even follow your body and blow the air right at you. I don't know brands, but yes, there's ... with the new, white roofing material, which is expensive, will also significantly cool your house in the summer.

Description : Do you know anyone who loves the warm summer months who doesn't have air conditioning?

Last Answer : answer:My adoptive grandmother. She lives in a house in the country that doesn’t have air conditioning. She is 83 years old and she has been living there her entire life. She loves the summer. she is absolutely ridiculous.

Description : How to keep a room cool in hot-humid weather without air conditioning (science!)

Last Answer : I keep my windows open and use a fan,blinds lowered.

Description : Anyone Living Without Air Conditioning?

Last Answer : answer:Usually fans. What we like to do is open up the windows at night when it is cooler. Then in the morning we will close up all of the windows and the blinds/drapes to trap the cool air in and block the ... we have is a bit small for the large space it has to cool. But it feels AMAZING to us :)

Description : Whats wrong with my cars air conditioning?

Last Answer : John, you might go here. It seems to be a very thorough site: http://www.freeautomechanic.com/airconditioning.html .

Description : Does anyone know the cost (estimate) to install central air conditioning in an older two story house?

Last Answer : We installed central air in a 1920s house about 10 years ago. The heating is steam so they didn't have vents to go through. They went down from the attic and put the tubing in the walls and ... ceilings. It cost about $7,000 for the installation. If you have more questions, feel free to ask.

Description : Air conditioning will not turn on, is it electrical?

Last Answer : Pull the Thermostat off the wall and see if it is connected correctly to the AC switch. There should be no dangling wires, and the post labeled for the AC should have an attached wire.

Description : What's a good way to level an air conditioning pad?

Last Answer : Maybe like a small wooden board to even it out?

Description : Is a block of ice in an air conditioning unit 'normal'?

Last Answer : One cause of that in an AC unit is that there isn't enough freon (or what passes for freon these days - I guess it should just be called coolant) in the system. When our AC developed a tiny leak ... , that is what ours did. We had to replace the bit with the leak, and have the coolant replaced.

Description : Does opening the blinds have any effect on the air conditioning?

Last Answer : Yes, it changes the insulation properties of the house or room. The better insulated, the more effective the air conditioning. Blinds should closed for the best result and the lowest running costs.

Description : Why is there a lot of water collecting in the floorboard of my Camry when I turn on the air conditioning on a humid day? If this is just condensation, shouldn't it drain outside the car?

Last Answer : This is a common problem with a lot of cars the last couple of years. The water should be draining on the ground. Chances are there is a clog in the drain line from the air conditioner. You may ... Get it fixed ASAP. You have water in your AC ducts which will eventually burn out your blower motor.

Description : Who is the largest air-conditioning controls manufacture?

Last Answer : We sell to Honeywell, Trane, Carrier, Rheem, Friedrich, TAC. It is a highly fragmented market. Manufacturers of air conditioners also make heat pumps and building climate control systems, among ... residential products and commercial products. Kind of hard to make a blanket statement about this. srm

Description : Why don't the air conditioning vent fans work when planes are on the ground?

Last Answer : They do don’t they? The only reason the cabin shouldn’t be air conditioned is if the plane isn’t powered or the plane is having problems with that particular system.

Description : How much evergy does central air conditioning save?

Last Answer : answer:It depends on your climate and how much you use the air conditioning per this site: Room air conditioners cool rooms rather than the entire home. If they provide cooling only where ... than central units, even though their efficiency is generally lower than that of central air conditioners.

Description : My air conditioning stop cooling after around 15 minutes. What could be the problem? What could I do?

Last Answer : answer:I had a similar problem with mine, many years ago, and it turned out to be a water drainage problem. Over a period of years, the water drainage tube gets impacted with a kind of sludge that looks ... is a danger that the unit could overheat and burst into flames. August 30, 2008, 11:44 AM EDT

Description : You are in your home, and your air conditioning is broken. The temperature in your house is 40 degrees. To warm yourself up, do you stand in an acute corner, or an obtuse corner? -Riddles

Last Answer : An obtuse angle because it will be at least 91 degrees.