Experimental development of electric heat pumps in the Greater Copenhagen DH system.
The purpose is testing and optimising large electric HPs (app. 5 MJ/s) using natural refrigerants, as well as testing both high and low temperature heat sources in the form of geothermal and sea and/or wastewater. The long term aim is up-scaling of the HP concept to >75 MJ/s with the purpose of integrating more wind power and delivering green DH.
Large Heat Pumps (HP) for District Heating (DH) face a number of barriers preventing a large scale introduction. Main barriers (in central district heating areas) are feasibility of investment compared to combined heat and power but also lack of knowledge regarding; up-scaled and optimised design and operation experience with large HP (app.5 MJ/s) using natural refrigerants, including testing smart operation strategies and suitable heat sources, all of which can contribute to the economic feasibility of large HPs .
Hence, the specific deliveries are concept development of the technical design (this project, phase 1), construction and testing (phase 2) of two electric driven 5 MJ/s HP based on a) the high temperature heat source of geothermal energy and b) the low temperature heat source of sea and/or waste water.The aim of the project was to accelerate the use of large electric heat pumps (HPs) for district heating (DH) through industrial cooperation, research and experimental development. The project is the first phase of an expected large scale HP demonstration project and concerns development of technology concepts and test programs for two large-scale HPs with the purpose
of demonstrating optimal design, SMART system integration, cost efficiency and maximal climate benefit. The results have been documented in various briefs, including findings concerning: Design criteria, choice of technology and preliminary principle diagrams along with drafts of the connections to heat and power network, building etc. The main findings are
summarised in this report
Key figures
Participants
| Partner | Subsidy | Auto financing |
|---|---|---|
| HOFOR A/S | 0,41 mio. DKK | 1,88 mio. DKK |
| VEKS A/S | 0,02 mio. DKK | 0,04 mio. DKK |
| Centralkommunernes Transmissionsselskab I/S (CTR) | 0,04 mio. DKK | 0,05 mio. DKK |
| Innoterm A/S | 0,37 mio. DKK | 0,28 mio. DKK |
| ALFA LAVAL COPENHAGEN A/S | 0,04 mio. DKK | 0,06 mio. DKK |
| DANSK MILJØ & ENERGISTYRING A/S | 0,13 mio. DKK | 0,09 mio. DKK |
| Biofos | 0,03 mio. DKK | 0,07 mio. DKK |
| Innoterm A/S | 0,37 mio. DKK | 0,28 mio. DKK |
