Next heat pump generation for retrofit buildings

GreenHP aims at developing and highlighting the potential of heat pumps for retrofitting buildings in urban areas. It addresses key features of future heat pump technology, which include the use of low global warming potential (GWP) refrigerants, advanced component design for minimum environmental impact and intelligent system integration with a focus on smart power grids.

GreenHP follows the following research approach:

1) System levelinteraction with smart electric grids, other energy systems and components as well as control of different system components

2) Heat pump unitdeveloping, assembling and testing of a 30 kW lab-scale air/water pilot heat pump under stationary and transient conditions

3) Component level: Refrigerant: charge reduction and the use of refrigerants with low GWP

Compressor: modulating compressor with a large turndown ratio and low oil charge

Evaporator: brazed aluminum micro-channel heat exchanger with high performance fin designs offering good defrosting and optimized refrigerant flow distribution

Condensator: brazed aluminum shell and tube heat exchangers based on MPE tubes

Compressor: modulating compressor with a large turndown ratio and low oil charge

Fan and air duct: high efficiency, low noise air duct for the evaporator including an advanced fan concept

Project start

December 2012

Project duration

45 months

Project partners

Funding line

This project is financed by funds of the European Commission and is implemented  within the framework of FP7-ENERGY-2012-1.

Links to publications

Final Report

Further information on the project can be found here.

AIT contact

Andreas Zottl