Hot water pure water coproduction device by solar energy

Abstract

The invention discloses a hot water pure water coproduction device by solar energy, comprising an evacuated tube collector, a hot water tank, a cooling water tank, a condenser, a defrosting tray, a water pump, a water level sensor, a motor operated valve and a pipeline. The process for the device to prepare pure water comprises the following steps: the water tank of a solar energy water heater isunder the high-temperature and high-moisture environment; damp air enters the condenser on the upper part by natural convection to generate pure water; after cooling water adsorbs latent heat of condensation, a temperature rises; and then, the cooling water serves as water heater make-up water to utilize the regenerative heat of steam latent heat of condensation. The pure water coproduction device has the advantages of simple structure and small assistant energy consumption, and is especially suitable for dispersed water supply for areas lacking in freshwater, such as islands, brackish water areas and the like, the purpose of hot water pure water coproduction is realized, and the problem of home drinking water is solved.

Description

1. Technical field [0001] The present invention relates to an integrated pure water and hot water method for producing pure water by solar energy, in particular to a method for producing pure water and hot water by using hot water generated by solar water heaters to humidify and dehumidify air through natural convection device. 2. Background technology [0002] Freshwater resources in my country are very scarce. According to statistics, more than 38 million people in my country drink brackish water. Most coastal cities north of the Yangtze River are in a state of severe water shortage. Water resource pollution also poses a threat to drinking water quality. Drinking pure water has become a common choice. At present, the methods of producing pure water are mainly reverse osmosis, multi-stage flash evaporation, and low-temperature multi-effect. These methods are mainly used for centralized water supply in densely populated areas, while rural areas, islands and other areas lack ...

AI Technical Summary

Problems solved by technology

The current domestic pure water dispensers use reverse osmosis membranes to produce pure water. The main problems are: the reverse osmosis membrane has low efficiency and short life; it needs pre-treatment such as filtration and adsorption, and has high requirements for water quality; High energy consumption is not suitable for application in power-scarce areas, so it is urgent to develop a small-scale low-energy seawater desalination device

[0005] The above technologies all have certain deficiencies. Some of them use high-temperature concentrated light as the heat source. The disadvantages of this method are that high-temperature scaling is difficult to solve and the thermal efficiency of the system is low; The problem of low water rate, but the life of the permeable membrane is short, and the water quality requirements are high; some technologies do not explain the recovery and utilization of steam latent heat, which reduces the thermal efficiency of the system; some technologies use low-temperature multi-effect or multi-stage flash evaporation This method has high requirements on the negative pressure of the evaporation chamber, high energy consumption, complicated operation, and is not suitable for scattered users.

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