Tower type solar chimney salt, water and electricity cogeneration system and operation method thereof

Abstract

The invention discloses a tower type solar chimney salt, water and electricity cogeneration system and an operation method thereof. The tower type solar chimney salt, water and electricity cogeneration system is characterized by comprising a heat-collecting shed and a solar chimney located at the center of the heat-collecting shed, and the heat-collecting shed comprises a heat-collecting shed cover plate, heat-collecting shed supports, a heat accumulation layer and a salt water pool. The tower type solar chimney salt, water and electricity cogeneration achieves the beneficial effects that the tower type solar chimney salt, water and electricity cogeneration comprises a non-light-condensing type solar hot airflow system, a reflective type Fresnel light condensation system and a humidification-dehumidification seawater desalination system; by utilizing the solar hot airflow system generating electric energy and a strong upflow, seawater in the salt water pool is evaporated; by utilizing the reflective type Fresnel light condensation system, air is further heated in the chimney, part of heat is conducted to the salt water pool at the same time to improve temperature of salt water, and then evaporation is enhanced; and by utilizing a humidification-dehumidification seawater desalination scheme, seawater desalination is performed. Through adoption of a reflective type Fresnel light condensation lens, the radius of the heat-collecting shed cannot be too large, the height of the chimney also cannot be too high, multiple types of energy are fully recovered, and heat efficiency of the system is provided.

Description

technical field [0001] The invention relates to a tower-type solar chimney salt, water and electricity cogeneration system and an operation method thereof, belonging to the technical field of energy optimization utilization. Background technique [0002] Our country is a big ocean country with a long coastline, and we can use solar energy to desalinate seawater. There are two main methods of existing solar desalination technology: one is to use solar power to drive the reverse osmosis process; the other is to use solar energy to generate heat to distill seawater to make it evaporate through phase change. The solar reverse osmosis method requires high-pressure pumps, reverse osmosis membranes, heat exchangers, condensers and other components, so the system is complex and the initial investment cost is high. The solar distillation method is simple, widely used, mature technology, and does not require additional power input. Therefore, thermal seawater desalination using sola...

AI Technical Summary

Problems solved by technology

Most of the existing invention patents use the accumulated high-temperature heat energy to indirectly heat seawater to generate water vapor, thereby desalinating to obtain fresh water or concentrating to obtain sea salt. There are multiple heat exchange devices in this system, which affects the thermal efficiency of the system.

At the same time, this type of system needs to store a large amount of heat energy, so it needs to arrange a large-scale environment and strictly control each heliostat

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