17 October 2006

Measurement of the performance of an air/water heat pump using CO2 or R744 for the production of hot water for use in a hospital


The main objective of this project is to explore the capacities of a 60 kW air/water heat pump using CO2 (or
R744) as refrigerant for the production of hot water at the Le Locle hospital (canton of Neuchâtel, Switzerland).
The goal is to produce hot water with a temperature of 60 ° to 80 °C from cold water at a temperature of 10 °C.
The project will permit real-time measurement of the coeffi cient of performance of the heat pump under differing
conditions of use (e.g. changes in the temperature of the cold water), as well as its verifi cation over an extended
period of time in order to evaluate its performance under changing seasonal conditions.