Maximum transparency

Heat loss measurement ensures maximum transparency

To offer consumers a maximum amount of transparency, an energy efficiency classification according to EU directive 812/2013 is an indispensable condition. The prerequisite for that is the amount of energy which is necessary to keep the temperature inside of a storage tank steadily. Based on this indicator, the energy efficiency can be calculated and an ErP labeling between A+ and C can be carried out. Due to EU directive 814/2013, higher classes are not allowed anymore.

 

 


CAUSES OF HEAT LOSS

Heat loss is described as the heat dissipation of a hot water storage tank at a certain water and ambient temperature. This is quantified as the amount of heat which is emitted through the surface per hour. Heat loss is caused by several physical heat transfer mechanisms despite the usage of state-of-the-art insulation materials. Nevertheless, innovative solutions can reduce these losses significantly. Ordinary storage tank insulations, such as soft foam and polyester fibre fleece, have a heat conductivity between 0,038 and 0,043W/mK. Innovative technologies like vacuum insulation panels (VIP) reduce the heat conductivity by ten times. This increases the energy efficiency of a storage tank drastically.

 


If you would like to find out more about the energy efficiency labeling, heat losses and how to measure them, the link below contains more detailed information.

 

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We offer comprehensive assistance for heat loss measurement

WE SUPPORT YOU IN MANY AREAS

As a supplier of innovative solutions for energy efficiency improvement, we can assist you with our services. With our in-house test laboratory, the heat loss of your insulated storage tanks (max. 2000 litres) can be determined, according to the DIN EN 12897 test standard. On request, we can classify the energy efficiency based on this measurement. 

 

 

This service is frequently used by our customers. If you are interested, please contact service team.

 

 

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How we work

The storage tank is connected, insulated and filled with water. 1 The storage tank is connected, insulated and filled with water.
The Water is heated up to 65°C and held for 24 hours. 2 The Water is heated up to 65°C and held for 24 hours.
The required energy is recorded over several measuring cycles. 3 The required energy is recorded over several measuring cycles.
The data are evaluated and abstracted in a test report. 4 The data are evaluated and abstracted in a test report.
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