HEAT EXCHANGER FOR REFORMER OF FUEL CELL GENERATOR

摘要

PURPOSE: To eliminate a necessity for arranging an auxiliary heater to energize a power generator by a method wherein three different flow passage cores are stored in a single housing and all these flow passage cores are thermally connected to each other by heat exchanging fin plates. CONSTITUTION: Hydrocarbon fuel of raw material to be pre-heated passes through a conduit 58 into a heat exchanger 2 and is not only heated by discharged gas from a catalyst reforming device passing through a central core section 14, but also heated by cooling water flowing from a power generator fed from the conduit 28. Then, when the power generator is energized, the heat exchanger 2 is pre-heated with cooling water of high temperature flowing through the pipe 34. This cooling water is sufficiently heated when the fuel cell is energized, the lower half mass of the core section 14 is heated sufficiently more than a dew point of the initial discharged gas flowed from the reforming device and similarly, the upper half mass of the core section 14 is sufficiently pre-heated by the discharged gas and each of them is prevented from being coagulated. It is not necessary to arrange any heater for pre-heating and adjustment of the heat exchanger 2.