| 摘要 |
<p>[PROBLEMS] To attain safely and sanitarily indirect heating at 100°C or higher with the use of a wide variety of liquids by carrying out heating of a heating medium liquid in a vacuum atmosphere without the occurrence of fire due to oxidation deterioration of heating medium liquid, overheating of heating medium liquid, etc. and without the danger of apparatus breakdown through no use of high-pressure boiler, etc. [MEANS FOR SOLVING PROBLEMS] A heating medium liquid (2) for heating a target liquid (3) to be heated is heated at 100°C or higher in a vacuum atmosphere.</p> |
