| 摘要 |
The present invention relates to an apparatus for heating fluid in a heating system, such as central heating, comprising at least one heating device with: a container (3) filled with transfer medium, having an inlet connection (4) and an outlet connection (5) and in the interior thereof an electric heating element (9) and a heat accumulator; a feed-through pipe functioning as heat exchanger which is immersed in the transfer medium and connected to the inlet connection and the outlet connection; and pumping means (6) connected to the feed-through pipe to push the fluid therethrough. Particularly mass and heat characteristics of the transfer medium, heat exchanging surface area of the heating element, heating surface area of the feed-through pipe, power of the heating element and volume of the feed-through pipe are taken such that the transfer medium forms the heat accumulator in the container. |
