| 摘要 |
PURPOSE: To prevent significant displacement during heat cycle by providing a heat exchanger for heating fluid by touching heat storage bricks having an electric heating means, constructing a chamber of opposed plates arranged at an interval smaller than the side dimension. CONSTITUTION: The heat exchanger 7 touches heat storage bricks 8 surrounded by heat insulating panel wherein the bricks 8 are heated by a heating coil 13 and charged electrically during off-peak period. The heat exchanger 7 comprises identical chambers 17, 18, 19 consisting of opposed pan-type plates welded along flanges constituting the rims of the pan. Depressions in each plate abut corresponding depressions in an opposing plate. Each chamber is coupled with upper and lower header pipes, respectively. Consequently, a large area is available for contact with the bricks and each side thereof does not displace significantly during heat cycle. |
