COMBINED DISTRICT COOLING AND DISTRICT HEATING PRODUCTION WITH LARGE CENTRIFUGAL HEAT PUMPS
This presentation describes a very efficient way to combine district cooling and district heating with centrifugal heat pumps. During heating mode the heat pump is producing hot water temperatures up to 90°C and in cooling mode or in combined mode chilled water of 4°C. It allows therefore selling heating capacity and cooling capacity either individually or simultaneously, allowing a short pay back period of the heat pump installation. Furthermore an efficient way to recover heat from flue gas condensation in a waste incineration plant is described, by using a single stage centrifugal heat pump.