This case study presents results from high pressure heat pump solution using ammonia and screw compressors up to 90°C for reducing the Nestle Halifax factories refrigeration and heating energy demands. This enabled Star to comfortably take heat from the 0°C process glycol at -5°C and lift it to 60°C in one stage for heating. Nestle can save an estimated £143,000pa in heating costs, and 119,100kg in carbon emissions by using a Star Neatpump. Despite the new refrigeration pla
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