In the context of a large DX system with a remote condenser and liquid receiver, Im trying to understand the ratio of liquid to vapour, especially during off cycle, and the behaviour of the refrigerant.
- Why can you reclaim a large % of the refrigerant from the high side (liquid), but the pressure will remain the same? Or in other words, the pressure does not decrease lineraly with the amount of refrigerant you have pulled out, so it seems the pressure/volume (in lbs of refrigerant) are not proprtional in this example. I've noticed this alot working on large-ish systems (e.g 220lb+).
Is it the case, that the pressure/saturation temp of the refrigerant does decrease, but at the same time the % of vapour increases, until there is no more/not enough liquid left to boil off?
-Is it the case then, that when you reclaim all of the liquid from the highside, the vapour that is left is a tiny amount (in lbs) compared to the liquid you just pulled out? I understand the density of vapour is alot lower, but I didnt quite undestand the dyanmics behind these examples clearly.
- What determines the gas/vapour propotions in the high side off the system while its off? The temperature of the condenser/high side pipework (obviously?)?
Few years in to the trade, have covered enthalpy charts etc in school, but the behaviour of the refrigerant in situations like this isnt so clear to me Sorry if they seem like basic questions but any fridge wizards out there i'd appreciate the help, Cheers!
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