Düsseldorf, Germany:

Lange E., Freelance Technical Journalist, e-mail: redaktion@stahleisen.de

The research project conducted by ThyssenKrupp and its partner, Stiebel-Eltron company, has displayed steel possibilities based on efficient conditioning. The designed storehouse has been calculated in cubic mode and consists of usual sandwich elements made from two flat steel pieces, including tubing system and intermediate isolated layer. Heat accumulated by fl at steel under the sun is distributed in the low-temperature circulating system with assistance of a heat pump and then transferred to the northern cold side. Therefore, the system «absorber-collector» can turn easily the heat flow, otherwise, in summer the cold from the northern part of the building can be transported to more warm walls. It is shown that only 21 % of relevant energy should be spent for generation of 100% of the required heating energy and for operation of a thermal pump. So-called «season- factor» SPF (seasonal performance factor) makes 3.9 for warm season, and even higher for cold season. At present time, the first smallserial production of such wall panels is planned to be started.