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Dairy Farming
Heat recovery from fridge compressors
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<blockquote data-quote="Tullyvernon" data-source="post: 5906134" data-attributes="member: 89"><p>The heat recovery is only as good as how you utilize the hot water available, it's all well and good seeing it at 50-60'C'C in the heat recovery but what happens next?</p><p></p><p>For example a pressurised water heater for the bulk milk tank, it draws off the water from the heat recovery while the tank is washing, then the water sits there for almost 48 hours to the water heater comes on. If you loose 20'C for every 24hours, then you have lost the best part of 40'C </p><p></p><p>On a farm with demand for hot water a heat recovery will have a very decent pay back, but if it's not plumbed correctly or you don't actually use enough not water to begin with you won't getting return on investment.</p><p></p><p>A plate cooler isn't an alternative, in my opinion every dairy farm should have BOTH.</p><p></p><p> But two completely separate systems.</p><p>If you NEED more not water it is more efficient to heat the water with HR rather than cool the milk with the plate cooler and heat the water with electricity.</p></blockquote><p></p>
[QUOTE="Tullyvernon, post: 5906134, member: 89"] The heat recovery is only as good as how you utilize the hot water available, it's all well and good seeing it at 50-60'C'C in the heat recovery but what happens next? For example a pressurised water heater for the bulk milk tank, it draws off the water from the heat recovery while the tank is washing, then the water sits there for almost 48 hours to the water heater comes on. If you loose 20'C for every 24hours, then you have lost the best part of 40'C On a farm with demand for hot water a heat recovery will have a very decent pay back, but if it's not plumbed correctly or you don't actually use enough not water to begin with you won't getting return on investment. A plate cooler isn't an alternative, in my opinion every dairy farm should have BOTH. But two completely separate systems. If you NEED more not water it is more efficient to heat the water with HR rather than cool the milk with the plate cooler and heat the water with electricity. [/QUOTE]
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Heat recovery from fridge compressors
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