Smart Home, Smart Building, Smart Consumer

Hot water supply with electronically controlled water heater

„Esplanade Residence“ case study at the Sony Center in Berlin
CLAGE GmbH aims to draw attention to the savings potential in water heating. A sensible, economical and efficient hot water supply saves energy and water, thereby contributing to the turnaround in energy policy. The Sony Center in Berlin serves as a good example to show how separating heating and hot water leads to efficient, targeted results with huge savings.

The Sony Center at Potsdamer Platz in Berlin

Around 80% of a household’s energy requirements is attributed to heating and hot water. The topic of water heating is still being neglected when compared to household heating, but it is beginning to take on a more prominent role because better insulation technology has contributed to lowering home heating requirements. Consequently, it makes sense to separate heating and hot water demands and no longer pursue a central and combined system solution. The Sony Center is one of Berlin’s most distinguished architectural landmarks, an internationally acclaimed building that combines work, living and entertainment spaces in one complex. The 134 apartments in the Esplanade Residence had their central hot water heater decoupled from the heating unit and replaced with a decentralised system comprised of energy-saving, electronically controlled water heaters. They cater to the high comfort levels of the residents and save energy because they only heat the water as needed. Having electronic water heaters installed directly at the tap makes circulation processes unnecessary. The requirement that hot water be available instantaneously is implemented more efficiently with the decentralised alternative. The goal for the transition to a decentralised system in the Sony Center was to attain the expected savings of approximately 240,000 kilowatt hours of electricity per year, resulting from the absence of circulation processes and electrical trace heating in the pipe system of the hot water distribution network. This is equivalent to the average consumption of 60 households and contributes to CO2 savings of more than 130 tonnes (UBA 2010, emissions factor of 544 g CO2/kWh). Modern water heating technology can therefore also make a significant contribution to the turnaround in energy policy. An electronically controlled water heater in a decentralised system can save up to 40% compared to a central storage system. The potential is enormous! <object classid="clsid:38481807-CA0E-42D2-BF39-B33AF135CC4D" id="ieooui"></object>

contact details/company:
Pirolweg 1 – 5
21337 Lüneburg

contact person:
Jürgen Unseld
04131 890131