Energy consumption value
The energy consumption value or power consumption value indicates the measured specific energy consumption in kilowatt hours per year and m² area (abbr. KWh / (a m²)) of a building and should evaluate the building energetically.
The characteristic value always applies to the building as a whole. In the case of small buildings, the individual user behavior has a greater influence on the result than in the case of larger buildings, in which the different usage habits of the residents are statistically averaged out.
In contrast to the calculation of the energy requirement, the determination of the energy consumption value is possible using just a few parameters and allows a quick energetic assessment of the building, the finding of weak points, however, requires a detailed analysis of the building parts and system technology.
The characteristic value is determined differently, which must be taken into account when comparing buildings. So the reference size can be z. B. the living space or the net floor area . The energy consumption can be made up of different consumption for heating, hot water, cooling and electricity. In some cases, the primary energy consumption is evaluated in addition to the measured consumption .
The energy consumption value in the German Energy Saving Ordinance 2007
In the case of residential buildings , the energy reference area is the usable area of the building ; in the case of non-residential buildings, the net floor area. The value is determined as a result in the energy certificate in the variant of the consumption certificate. In the case of residential buildings, the value includes at least the energy consumption for heating; it can also include consumption for hot water. The certificate for non-residential buildings differentiates between heating energy consumption and consumption for electrical energy .
The characteristic value is to be calculated as the mean value from the climate-adjusted energy consumption characteristic values for three consecutive years.
Heating mirror
The so-called heating mirror also determines an energy consumption parameter. It is published by many municipalities in Germany. It is related to the living space and only includes the heating energy consumption. It applies to a specific year and a specific region and is unsuitable for cross-regional or time-independent comparisons.
Individual evidence
- ↑ www.heizspiegel.de , accessed on Dec. 15, 2008
Web links
- baumarkt.de: Energy consumption value calculator
- consumer center.de Energy pass: What does this profile say for residential buildings? , on March 9, 2018
- German Weather Service: Climate Factors (KF) for energy consumption certificates