30 May 2005

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.