The performance of a boiler with a built-in thermal storage unit is presented. The thermal storage unit is an insulated water tank that absorbs surplus heat from the boiler. The stored heat in the thermal storage unit makes it possible to heat even when the boiler is not operating, thus...

On the basis of their thermodynamic properties and their historical development, some “Strength-Ideas” proposed which lead to the conclusion that, properly designed, heat pumps have a good future and will contribute to lessen the global CO2 emission burden.