NH3 large heat pump at Nestle factory

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 plant providing both heating and cooling, it consumes £120,000 less electricity per annum than the previous cooling only plant.