Chimney generation and desalination device by solar

Abstract

A device which utilizes the solar energy to carry out chimney generating and seawater desalting relates to the technical field of utilizing the solar energy to carry out generating and seawater desalting. The invention includes a solar chimney, a transparent heat collecting shed, a solar distilling pool and a turbine generator set. The transparent heat collecting shed is covered on a supporting group; the turbine generator set is arranged in the solar chimney arranged at the connection location of the solar chimney and the transparent heat collecting shed; the solar distilling pool and a rock heat accumulating layer are arranged at the lower side of the transparent heat collecting shed; a transparent cover plate is obliquely arranged at the upper end of the solar distilling pool; the lower end of the solar distilling pool is respectively connected with a seawater input pipe, a brine output pipe and a fresh water output pipe. The device of the invention improves the comprehensive operating factor of the solar energy, improves the comprehensive operating factor of land resource and simultaneously reduces the cost of each product such as power, heat accumulating amount, fresh water in another way.

Description

Technical field [0001] The invention relates to the technical field of using solar energy for power generation and seawater desalination. Background technique [0002] The solar chimney power generation system mainly consists of four parts: solar chimney, heat collection shed, heat storage layer and turbine generator set. The heat collection shed composed of a transparent cover and a bracket is centered on the solar chimney, distributed in a circle shape, and has a certain distance from the ground heat storage layer. The light-transmitting heat-collecting shed is equivalent to a huge glass greenhouse. The surface heat storage layer in it absorbs the solar short-wave radiation and the temperature rises and heats the air in the shed. The air absorbs heat, the temperature increases, and the density decreases. The external environment creates a density difference and thus a pressure difference. The chimney acting as a negative pressure tube increases the pressure difference between t...

AI Technical Summary

Problems solved by technology

[0005] The water production of traditional solar distillation devices is relatively low. There are three reasons: First, the latent heat of condensation of steam is not reused, but is lost to the atmosphere through the cover plate

The second is the natural convection heat transfer mode in the traditional solar distillation device, which greatly limits the improvement of the thermal performance of the distillation device

The third is that the heat capacity of the seawater to be evaporated in the traditional solar distillation device is too large, which limits the increase of the operating temperature, thereby weakening the driving force of evaporation

At the same time, the solar distillation device occupies a large area and the land utilization rate is low

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