| 摘要 |
PURPOSE:To retain an apparatus on board at a designated temperature at a low cost without pollution by fitting an apparatus on board, the temperature is controlled in a lunar vehicle to a heat accumulator, and connecting a radiator having a heat pipe embedded in the inner surface thereof and the above heat accumulator to each other by plural heat conduction paths. CONSTITUTION:During the night of the lunar surface, the temperature of a car body 4 of a lunar vehicle is lowered by radiation cooling, and the thermal energy of an apparatus 1 on board and a heat accumulator 2 where the apparatus is installed is transmitted to a radiator 8 through a thermal switch 6 and heat pipes 5, 7. Accordingly, the temperature of the apparatus 1 on board is kept at a melting point of the heat accumulator 2, so that the temperature of the apparatus 1 on board can be kept at a melting point even during the night. On the other hand, during the daytime of the lunar surface, the temperature of the car body rises, and the apparatus 1 on board is caused to generate heat by itself when the power is applied. Whereupon, the thermal energy is transmitted to the radiator 8 through a heat accumulator 2 as described above. Accordingly, the thermal energy is emitted in the space to prevent the temperature rise of the apparatus 1 on board. |
