Geothermal power generation system by adopting photo-thermal twice evaporating

Abstract

The invention relates to a geothermal power generation system by adopting photo-thermal twice evaporating, which is characterized by comprising an evaporator, a heat regenerator, a fractional distillation and condensation unit, a solar energy ammonia heat collector, a separator, a turbonator and an ammonia supplying pump. The invention provides the geothermal power generation system by adopting the photo-thermal twice evaporating, and belongs to the field of thermoelectric conversion devices for converting geothermal energy and solar energy. Compared with the traditional geothermal power generation technology, Kalina cycle technology is adopted; a middle-low-temperature heat source is utilized; the circulating efficiency is 20 to 50 % larger than the conventional Rankine cycle in the middle-low-temperature range, which is considerable on the energy utilization; the running reliability and the power generation efficiency are improved; and the solar energy ammonia heat collector is adopted to form natural cycle with the separator to collect solar energy to enable the ammonia water to evaporate twice to produce ammonia vapour, thereby realizing efficient switch of the photo-thermal power generation on the basis of geothermal power generation. The technology is mature; the economy is feasible; and the photo-thermal conversion efficiency reaches up to more than 95% which cannot be transcended by other solar energy heat collectors.

Description

technical field [0001] The invention relates to a geothermal power generation system using photothermal secondary evaporation, and belongs to the technical field of geothermal energy and solar photothermal power generation devices. Background technique [0002] World economic development has an increasing demand for energy, and at the same time, the ecological environment on which human beings depend is deteriorating. Human beings have begun to consider vigorously developing new energy sources, especially renewable clean energy sources, to replace traditional energy sources. As new energy sources, geothermal energy and solar energy have attracted more and more attention. Countries have successively formulated policies to encourage the development and utilization of geothermal energy and solar energy, and new progress has been made in technology and equipment for the development and utilization of geothermal energy and solar energy. Geothermal solar power generation uses nat...

AI Technical Summary

Problems solved by technology

Although at present, in the design of some more sophisticated tower systems, different heliostats start to use spherical surfaces with different curvature radii to reduce the size of the sun’s focused spot on the tower, but the complexity of optical design has greatly increased and the manufacturing cost has also increased. followed by substantial growth

[0032] Second, many heliostats are built around the central tower. The establishment of the huge central tower must ensure that the heliostats cannot block the light from each other.

The disadvantage of the disc system is that it is expensive, and it is also the first in this system

At present, the initial investment cost of the dish thermal power generation system is as high as 47,000 to 64,000 yuan

Although the concentration ratio of the dish system is very high and can reach high temperatures of 2000°C, such high temperatures are not necessary or even destructive for current thermal power generation technologies.

Therefore, the receiver of the dish system is generally not placed in the focus, but is properly placed in a lower temperature zone according to the performance index requirements, so that the advantages of high concentration cannot actually be fully utilized and heat storage Difficult, hot molten salt heat storage technology is dangerous and expensive

[0045] To sum up, the existing three solar thermal power generation technologies are all high-temperature solar power generation technologies, which greatly increase the performance requirements of solar collectors, and will inevitably increase the capital investment in solar collectors. , increasing the initial investment

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