Ideas and Proposals

HPT welcomes ideas and topics for new international collaborations!

If you have a suggestion for an international collaborative project of the IEA Heat Pumping Technologies, please contact the Heat Pump Centre. The HPT aims to increase the number of collaborative projects and your suggestions are therefore very welcome.

The strategy for the TCP for 2018-2023 includes performing RDD&D activities within the areas of heating, cooling and refrigeration for the building, community, transport and industrial sectors, while widening the scope to include the following points to a larger extent:

  • Affordable and competitive technologies for heating;
  • More efficient cooling and air-conditioning, especially in warm and humid climates;
  • Flexible, sustainable and clean system solutions (e.g. in urban areas) using combinations of heat pumping technologies with energy storage, smart grid, solar and wind energy, thermal networks, energy prosumers, etc.;
  • Possibilities offered by the developments in the area of digitalisation and Internet of Things;
  • New or special markets and applications, including automotive, industry and consumer products (e.g. white goods);
  • New, alternative or natural refrigerants with lower global warming potential, high thermodynamic potential and low toxicity for both new and existing applications

The following ideas/proposals are right now under development of becoming a new Annex in the Heat Pumping Technologies TCP. If you are interested in any of the ideas or have other ideas, please contact the person listed in the table below, your ExCo delegate or the Heat Pump Centre.

Idea/Proposal description Status
Flexibility by implementation of heat pump in multi-vector energy systems and thermal networks.

This proposed Annex will focus on the implementation of heat pumps in district heating and cooling systems and describe possible solutions and barriers for heat pumps on these markets. Creation of the possible flexibility in the thermal network and electrical grid, is a main part of the annex. The possibilities of increasing a larger share of renewable energy and excess heat as well as reduce the CO2 emission in the used heating systems by using heat pumps will be a focus area of the Annex. In addition, minimizing the system losses by using heat pumps will also be an objective as will the reduction of CO2 emissions.

Contact: Svend Pedersen,

Annex 57 start in January 2021.
High Temperature Heat Pumps.

The worldwide ambitions to decrease the GHG emissions require a considerable reduction of fossil-fuel based heat supply for industrial processes, industrial heat pumps and especially high temperature heat pumps can contribute to this reduction. Heat pump-based heat supply at high temperatures is often facing various challenges. The high supply temperatures are typically associated with large temperature lifts and thereby limited thermodynamic performances. The overall objective of the Annex is to provide an overview of the technological possibilities and applications as well as to develop best practice recommendations and strategies for the transition towards heat pump-based process heat supply.

Contacts: Benjamin Zühlsdorf,,

Heat pumps for drying.

Contacts: Thomas Fleckl,

Heat Pumps in Positive Energy Districts.

Contacts: Carsten Wemhoener,

Comfort & Climate Box for warm and humid climates.

Contacts: Monica Axell, or Peter Wagener,

Large demonstration project for flexibility.

Contacts: Jesper Juffermans,

Health and energy-efficiency, win-win or not?

Contacts: Marion Bakker

Retrofit Heat Pump Systems in Larger existing Buildings.

Contacts: Roger Hitchin

How to improve the channel between manufacturer and end-user, to extend the good use of heat pumps.

Contact: Marion Bakker,

Energy storage with heat pumps in smart energy grids.

Contact: Peter Wagener,

Communication/diagnostic Protocols for Heat Pumps.
This Annex proposal is a continuation of Annex 36 “Quality Installation / Quality Maintenance Sensitivity Studies”.

Contact: Antonio Bouza,