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Thread: basic fridge question
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01-05-2009, 04:28 PM #1
basic fridge question
looking in a book for some reseach and i cant get my head around one thing
if the refrigerant from the compressor comes out as high pressure high temp how does it loose enough heat to become a liquid again in the condenser coil?
ie r22 boils off at -42c so anything below that its a liquid. Its got to be a liquid going into the evap right?
so from compressor to evap inlet it can loose 50-60 degrees?
basic i know i just cant grasp it
many thanks
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01-05-2009, 04:54 PM #2
Re: basic fridge question
All I can understand from your post is you do need to go back to basic for a while........
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01-05-2009, 05:12 PM #3
Re: basic fridge question
not really the answer i was lookin for.....
but you input is greatly appreciated
thanks
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01-05-2009, 05:34 PM #4
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Re: basic fridge question
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01-05-2009, 10:42 PM #5
Re: basic fridge question
Go right back to basics.
At what temperature does water boil half way up Mount Everest?
Now reconsider your refrigeration circuit pressures/temperatures.Brian - Newton Abbot, Devon, UK
Retired March 2015
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02-05-2009, 11:15 AM #6
Re: basic fridge question
hey Alec, if you are a student its the wright question to ask,but please , dont tell us that you are a refrig-engeneer,because then you are in trouble M8.
ice
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02-05-2009, 03:51 PM #7
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02-05-2009, 04:05 PM #8
Re: basic fridge question
hey quality, i think you have to go back to school to.....(lol)
ice
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02-05-2009, 04:24 PM #9
Re: basic fridge question
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02-05-2009, 05:16 PM #10
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Re: basic fridge question
Mount everest height is 8850m.
Half of that is 4425m.
At that height barometric pressure is 59 kPa
At that pressure water boils at 85,51°C! (CoolPack calculation of water saturation temperature).
Easy, 5 min job with internet connection!
You don't need to be that much smart today!
But you need to use that gray thing between ears!
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02-05-2009, 05:31 PM #11
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02-05-2009, 05:32 PM #12
Re: basic fridge question
are you sure it is grey??? mi father told me as a kid the brain is pits black,as you get smarter its get lighter,so when youre very-very smart,its gets white. so as mine are starting to get grey,whe have still a long way to go......(lol)
ice
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06-05-2009, 09:26 PM #13
Re: basic fridge question
if u know ur fridge stuff the refridgerent turns to liquid 1-2 3rds of the way thru the condenser there fore giving u subcooling it needs to change state cause dont forget basics it needs to dump heat
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08-05-2009, 07:52 AM #14
Re: basic fridge question
MY FRIEND ITS VERY EASY TO UNDERSTAND!
INFACT ITS A PROPERTY OF REFRIGERANT WHICH IS BEING USED IN THAT SYSTEM ie (Boils at a very low temprature and pressure and rejects heat at a very high temprature and pressure) please stick on the ph chart form moderen refrigeration book. u can get whole u desire.
thanks.
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