| 摘要 |
PROBLEM TO BE SOLVED: To obtain a boiler of improved fuel efficiency by simply improving a normal steam boiler, a hot-air boiler, a hot-water boiler, an oil boiler, etc. SOLUTION: This boiler is a pollution-free boiler, in which heat energy of exhaust gas is utilized without using any fossil fuel. Heat energy of an exhaust gas discharged from an incinerator, a pottery furnace, a blast furnace, a boiler, an engine, a generator, etc., is reused to a normal boiler. Two or more boilers can be operated in fuel consumption of one boiler, so the expense of fuel can be reduced.
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