| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat medium composition which has a liquid form at normal temperature of about 20°C and has excellent heat stability and heat resistance even in use at a temperature of 400°C or more.SOLUTION: The heat medium composition is characterized by comprising 5 to 40 mass% of biphenyl, 10 to 70 mass% of diphenyl ether, 5 to 30 mass% of diphenylene oxide and 5 to 30 mass% of naphthalene. The heat medium composition is used in solar thermal power generation. |
