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Quotes - Engineering - SalesCondenser Heat Recovery
Turning Rejected Heat Into Hot Water
A refrigeration system rejects everything it removes from the product plus the compressor work. On a dairy, a cold store or a food plant that is a substantial and completely predictable quantity of heat leaving through the condenser.
Where it goes instead. Pre-heating water on its way to the hot water system, warming washdown water, or supplying a process that needs modest-temperature heat. The temperature available is limited by condensing conditions, so the sink has to be one that can use warm rather than hot water.
Separation matters. Where recovered heat enters potable water, the arrangement must guarantee that refrigerant and potable water never share a single barrier. Double-wall construction is the usual answer.
On the farm. The Mueller Fre-Heater is a packaged version of exactly this for dairy refrigeration, recovering compressor heat into farm hot water automatically.
Common FAQs
It is limited by the condensing temperature of the refrigeration system, so think warm rather than hot. That suits pre-heating water on its way to a heater far better than trying to replace the heater outright.
With the right arrangement, yes. What matters is that refrigerant and potable water never share a single barrier, which is why double-wall construction is normally specified for this duty.
Done properly it can help, because removing heat from the discharge reduces condensing pressure and compressor work. Done badly it can raise discharge pressure, which is why the arrangement has to be designed rather than improvised.
Yes, the Mueller Fre-Heater. It is designed specifically to recover heat from milk cooling refrigeration into farm hot water, and it operates automatically without intervention.
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