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A.Mortezania
24-02-2017, 07:04 AM
Dear Friends,

I have a question. Do you have any document that explains refrigeration compressor compression ratio at air-conditioning system and refrigeration systems ?

Thanks.

Inverter man
24-02-2017, 10:59 AM
Compression ratio = Discharge pressure / Suction pressure. (Absolute pressures should be used).

The smaller the ratio is, the more efficient the pumping is.

If the ratio is high, less refrigerant mass is pumped over a given time especially in piston compressors, therefore more energy is consumed over time by the compressor motor or drive to achieve the same refrigerating effect as opposed to a low compression ratio.

Lower compression ratio = more pumping.
Higher compression ratio = less pumping.

No documents but hope this helps.

Josip
24-02-2017, 12:15 PM
Hi, A.Mortezania :)

it is archived a lot of answered questions here on RE forums ...

but you need to do searching by yourself ...

sometimes much better if you want to learn something .... believe me;)

RE archive is like ... Treasure chest ... https://www.amazon.com/Century-Novelty-12-Treasure-Chest/dp/B002POEQEK




Dear Friends,

I have a question. Do you have any document that explains refrigeration compressor compression ratio at air-conditioning system and refrigeration systems ?

Thanks.

check here,please..

http://www.refrigeration-engineer.com/forums/showthread.php?20350-Compression-Ratios

also www is full of documents like this one ...
http://www.hvacrinfo.com/cope_ae_bulletins/TAE1268.PDF

http://nptel.ac.in/courses/Webcourse-contents/IIT%20Kharagpur/Ref%20and%20Air%20Cond/pdf/R&AC%20Lecture%2019.pdf


Best regards, Josip :)

A.Mortezania
27-02-2017, 08:56 AM
Dear Josip and Inverter man,

Thanks for help of both of you.

Sincerely yours.