Lexikon J
- Yearly heat energy demand
It comprises the yearly heat energy demand and the losses of heating systems, which are used for heating a building and heating water.
- Yearly heat warmth demand
It is a scalar size in the "EnEV" for the amount of energy needed for heating a building.
- Yearly warmth usage demand
It is a scalar of the "EnEV" to determinate the amount of energy required for the heating of water in a building.
- Yearly primary energy demand
The "EwEV" therewith describes the amount of energy that will be required to cover the heat energy demand for the heating of a building and the heating of water. By measuring the kind of heat plant, it also considers the amount of energy necessary for gain, transformation and distribution of the respective fuels (gas, oil or current) as well as the losses of the heat plant itself, so to say all losses in generating heat. With the "EnEV", the first call for warmth protection in the yearly primary energy demand was made.
