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Thread: charge and condensing pressure
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27-01-2012, 06:56 AM #1
charge and condensing pressure
HI there,
hope you are fine.
Please, I would like to discuss with you about following topic related to condensing temperature and charge of refrigerant.
Following is the topic.
Let's suppose to have a system with an electronic expansion valve.
I would expect that this valve would regulate the flux so that we would have always the same superheating.
The base case is having the unit charged so that I can have a subcooling of 9F.
Let's suppose that I will now keep away some refrigerant - I will therefore reduce the refrigerant charge.
I would expect
- condensation temperature to reduce
- subcooling to reduce
- superheating to stay constant.
What would I expect from evaporation temperature ?
According to my point of view, since I have an electronic valve, it should be constant.
And about capacity of the unit ?
Basically, if condensation will reduce, considering the compressor curves, I would expect the capacity to increase.
Nonetheless, if this would be true, the lower the charge - up to when we get an acceptable subcooling, the higher the capacity.
Please, can anybody help me to understand better this scenario ?
Many thanks