Photovoltaic-thermal collectors, or PVT, are in vogue. Because they simultaneously produce electricity and heat, they are a suitable energy source for heat pumps. Also, a PVT collector achieves a significantly higher...
Final episode of a series on heat pumps in existing buildings: We should have courage to bet on the right technology “The signs are unmistakable. […] the cost of inaction is — keeps mounting. […] We have to move quickly...
Episode 11 of a series on heat pumps in existing buildings focuses on heat pumps in multi-family houses. Heat pumps are required in multi-family houses Heat pumps have a very wide range of applications. The building...
Episode 10 of a series on heat pumps in existing buildings that raises the question whether there is a benefit in installing a hybrid system in an existing building. To evaluate the usefulness of hybrid systems, we...
Episode 9 of a series on heat pumps in existing buildings Whether it’s worth waiting any longer to install a heat pump depends on two considerations: Is the technology at today’s level ready for satisfactory...
Episode 8 of a series on heat pumps in existing buildings with economic considerations on operating costs However ecologically sound a technology may be, it will only gain acceptance if it brings economic benefits to...
Episode 7 of a series on heat pumps in existing buildings To mitigate the consequences of climate change, a drastic decrease in CO2 emissions is essential. As part of the “European Green Deal”, European...
Episode 6 of a series on heat pumps in existing buildings with two exemplary houses Good examples make complex topics more accessible. But what would be a “good” example of an old building with a heat pump...
Episode 5 of a series on heat pumps in existing buildings Heating systems with heat pumps are usually equipped with a direct-electric back-up heater. Usually, the electric back-up heater takes over the heat supply from...
Episode 4 of a series on heat pumps in existing buildings: Results from a monitoring project of air-source and ground-source heat pumps The question of how well a heat pump works can be answered by looking at several...
Episode 3 of a series on heat pumps in existing buildings Clearly, the less energy needed to create a comfortable indoor climate, the better. That’s why renovation measures to reduce heating energy demand always...