Gas and renewables
A framework programme has been agreed with the gas companies' Technical Committee on Gas Utilisation and Installations for the demonstration of natural gas in combination with renewable energy technologies. In the domestic area, four projects are in progress on high-efficiency gas heat pumps and gas boilers combined with electric heat pumps in hybrid solutions. The latter can both produce higher energy efficiency and contribute to good interaction with the power grid. Until now, the focus has been on air/liquid-based gas heat pumps. The most recent project concerns a soil/liquid-based gas heat pump in which very high efficiency is expected. Energy consumption and output are measured continuously by DGC for later analyses.
Another form of technology that can help realise a sensible transition to a greener energy system is micro CHP. DGC has worked in this area for many years, among other things as a partner in the Danish national project in the area, known as Danish Micro Combined Heat and Power (www.dmkv.dk). This project focuses on developing and testing fuel cells in micro CHP plants for homes.
Micro CHP plants produce both electricity and heat. In the long term, they are able to provide the power grid with flexibility as they are also able to take surplus electricity from the power grid and store it as hydrogen or methane, for example. There is talk of a demonstration project involving the plants being moved out of the laboratories and into homes. This would allow the plants to be tested under real conditions and the developers would receive essential feedback.
Our part of the project involves safety assessment and laboratory testing of the fuel cells to achieve CE approval. DGC also has a number of tasks in connection with gathering and analysing data, teaching, etc. A strong national joint venture by Danish energy companies is behind the project: Topsoe Fuel Cell, IRD Fuel Cells, Dantherm Power, DONG Energy, SEAS-NVE, Syd Energi, COWI and DGC. The project is managed by SEAS-NVE.