ReplyMade this irs own thread.
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Refrigeration theory question;
If we have two evaporators in parallel (equal piping sizes, lengths etc.), but one evaporator is hotter than the other, will it (or the cooler evaporator) see more flow? Wondering if the higher temp one (with correspondingly higher pressure) will ‘lock out’ flow through the lower temp one. Happy to provide more specifics...
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Made this irs own thread.
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Suction pressure & saturated temp will be the same. Can only be differences in ssh if no components in suction line. So only minor differences in coil lat if coils same.
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what do mean by hotter?Originally Posted by Flane
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The expansion valve on the evap in the colder part of the box will be coasting along and maintaining it's superheat, while the expansion valve on the evap in the warmer part of the box will be struggling to bring down it's superheat, meaning that valve will be more open. Therefore, I'd say the "hotter" evap would have more refrigerant flow.
This is assuming that these aren't pressure limiting (ZP) expansion valves. If they are, then the results would be flip-flopped, as the TXV on the warmer coil would likely be throttled closed to limit the flow.
And if they were cap-tubes, then I'd say the one over the colder part of the box would have more flow, since it would have the bigger pressure differential through it.
In other words, I guess it depends.
Would you like to add the "more specifics" that you promised?
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