WS 6 – Heat Pumps and Solar Energy, a win-win combination

Heat Pumps and Solar Energy, a win-win combination (Program overview)

The workshop focuses on Increasing the synergies of the combination of heat pumps and solar energy (thermal and photo-voltaic) in a smart environment in order to get to an optimal application in the domestic market of new NZEB and existing buildings.

The topic has a close relation with the running HPT Annex 46 on Domestic Hot Water Heat Pumps and the workshop has been organized by the Operating agent of this Annex together with experts from the Technical Collaboration Program on Solar Heating and Cooling.

The goal of the workshop was Increasing the synergies of the combination of heat pumps and solar energy (thermal and pv) in a smart environment in order to get to an optimal application in the domestic market of new NZEB and existing buildings. By gathering a diverse group of researchers and practitioners we trust to get leads to strenghten the work under the running HPT Annex 46 in synergistic perspective regarding what is currently unknown and what can be learned from ongoing developments and projects.

The workshop started with number of presentations focusing on the combination of heat pumps and solar thermal of solar pv.

  1. The Potential and Challenges of Solar Boosted Heat Pumps for Domestic Hot Water Heating – Stephen Harrison (Queens University – Canada)
  2. Integrating solar PV/Thermal collectors with ground source heat pumps in Multi Family Houses – Nelson Sommerfeldt (KTH Royal Institute of Technology – Sweden)
  3. Optimisation models for the combination of heat pumps with solar thermal in domestic applications – Jacob van Berkel (ENTRY – Netherlands)
  4. Long term practical experience with in large scale renovation projects – John Braakman – (ZON Energie – Netherlands)
  5. PV replacements offer an opportunity that heat pumps – Krystyne Dawson (BSRIA – UK)
  6. Market potential of Domestic Hot Water systems in Germany – Lucas Bergman (Delta-EE – UK)
  7. Domestic Hot Water, solar energy and heat pumps in low temperature district heating grids – Brian Elmegaard (Technical University of Denmark)

All presentations can be downloaded as ZIP file.

During the Conference three of the workshop presentations were presented as full paper:

This broad perspective shows the potential especially in the domestic applications. In the Conference itself some other potential was shown by:

Under the Technical Collaboration Program on Solar Heating and Cooling a number of Annexes/Tasks are running covering this subject:

In the 2015 SHC Conference a number of papers have been published under Science Direct and it is expected that this will be the case again in the upcoming Conference in Dubai

The conclusions of the workshop were presented by Jacob van Berkel at the plenary closing session of the Conference:

  1. The heat pump market is hindered by the increasing E-price.
  2. Electricity market and pricing is volatile and may develop in a flat rate system.
  3. There is synergy between Solar and Heat pumps. (without heat pumps solar thermal probably has no future).
  4. The market is more interested in the PV-HP combination.
  5. The business case for Solar Heat Pumps very much depends on the (national) conditions, pricing, regulation.

Solar & HP is a win-win, provided that costs decrease!