Spatial day-and-night temperature difference generating device and method

Abstract

The invention discloses a spatial day-and-night temperature difference generating device and method and belongs to the technical field of spatial thermal power generation. The spatial day-and-night temperature difference generating device is composed of a heat storage system, a generation system and a cold storage system sequentially. The spatial day-and-night temperature difference generating method is as follows: the day-and-night temperature difference generating device is placed in an atmospheric outer space or on the lunar surface; a heat accumulator can simultaneously absorb and release heats and a regenerator only absorbs the heats under the illumination; and the heat accumulator only releases the heats and the regenerator can simultaneously absorb and release the heats without illumination, thus the generation system can realize the uninterrupted work. The device and method provided by the invention have the beneficial effects that two energy storage devices (one device is equipped with heat storage materials and the other device is equipped with cold storage materials) can be used for converting the temperature difference at different time in the outer space into the temperature difference at the same time to carry out heat exchange, thus the problem of the low generating efficiency of the existing spatial thermal generation system during the sunshine period can be solved, and the continuous and efficient power supply can be realized by virtue of alternative storage and release of the energy.

Description

Technical field [0001] The invention belongs to the technical field of space thermal power generation, and particularly relates to a space day and night temperature difference power generation device and method. Background technique [0002] In the aerospace field, access to energy occupies a very important position. There is no atmosphere on the surface of space and the moon. The temperature difference between day and night varies greatly. The outer space of the atmosphere has a temperature of about 120°C during the day and -270°C at night with a temperature difference of 390°C. On the surface of the moon, the average temperature during the day is 123°C. The average temperature at night is -183°C, with a temperature difference of 306°C, which meets the conditions for thermal power generation. The existing space thermal power generation system is mainly composed of solar energy concentrators, heat accumulators, power conversion components and radiators. Its principle is to use t...

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Problems solved by technology

Its disadvantage is that the radiator is used as the cooling source during the sunshine period, and the radiator will inevitably receive solar radiation. At the same time, since the radiator is installed on the space station or the surface of the moon, the temperature of the space station and the surface of the moon is about 120°C during the sunshine period. The heat dissipation performance is greatly reduced, the working medium cannot be sufficiently cooled, the temperature difference between the cold and heat sources is reduced, and the efficiency of the power generation system is reduced; therefore, the existing space thermal power generation system has a low energy utilization rate during the sunshine period and cannot achieve uninterrupted and efficient power supply day and night

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