| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell power generator capable of prompting a user for maintenance beforehand before any trouble in operation occurs, by detecting degradation of quality of cooling water in a simple and low-cost structure, without using an expensive device such as a deionization device. <P>SOLUTION: A water quality treatment means 8 for adjusting quality of water supplied to a cooling water tank 5 and a water quality detecting means 13 for detecting quality of cooling water are provided. When a speed of water quality degradation as detected by the water quality detecting means 13 reaches a given value, a water quality control means 14 directs a warning means 15 to warn on maintenance, judging that the water quality treatment means 8 is at end of life. With this, the problem is solved that condensed water in a condensed water tank released in the air has contaminant infiltrate in it to degrade water quality, and a volume and an extent of conductive ion seeping into a cooling water channel 10 from a heat exchanger 12 are varied, on which nothing was available for detecting in a simple structure before to warn the user on the quality degradation of the cooling water before any trouble in operation occurs. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
