Patent ID: 6364002
Filing Date: 2002-04-02
Classification: F24D,F28D,Y02B,Y02E,Y10S

Abstract:
A heat storage apparatus for a heat temperature range of substantially 10 to 90Â° C., comprising a low-temperature latent heat storage means, a water reservoir downstream of the low-temperature latent heat storage means, a first heat exchanger arranged in the low-temperature latent heat storage means and having inlet means for connection with a water feed duct so that water supplied by the feed duct can be preheated in the low-temperature latent heat storage means, a second heat exchanger arranged to extend through the water reservoir and to be in series connection with the first heat exchanger and having outlet means for connection with a water outlet duct, a solar heat collector for heating a heat carrier liquid by solar heating, a third heat exchanger arranged in a lower part of the water reservoir and having inlet means connected with a liquid feed from the collector, and a fourth heat exchanger arranged in the low-temperature latent heat storage means to be in series connection with the third heat exchanger and having outlet means connected with a liquid return for the collector so that the carrier liquid can be cooled down in the low-temperature latent heat storage means before return to the collector.