Gas source type heat pump-solar membrane distillation composite system

The technology of a solar film and a composite system is applied in the field of heating raw water by a solar vacuum heat collector tube, which can solve the problem of high overall energy consumption, and achieve the effects of reducing electric energy consumption, improving energy consumption level, and improving thermal energy utilization efficiency.

Active Publication Date: 2018-10-09
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the device heats the raw water through electric heating, so the overall energy consumption is still high

Method used

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  • Gas source type heat pump-solar membrane distillation composite system
  • Gas source type heat pump-solar membrane distillation composite system
  • Gas source type heat pump-solar membrane distillation composite system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Most areas in my country belong to category 3 and above sunshine areas (areas where solar energy can be utilized), and the annual sunshine hours are more than 2,000 hours. Therefore, the air source heat pump-solar-solar-membrane distillation composite system has broad application prospects, especially in areas where fresh water resources are scarce but brackish water is abundant, and this system can be used to prepare drinking water and domestic water. In addition, the heat pump-solar-membrane distillation composite system is used to treat industrial high-salt wastewater. The produced water can be used as circulating water and industrial water, and the concentrated concentrated water can enter the evaporation crystallization unit to achieve near-zero discharge of high-salt wastewater. processing requirements.

[0062] In a city in my country's Type 3 sunshine area, under typical sunny weather conditions in summer. The intensity of solar radiation gradually increases fr...

Embodiment example 2

[0070] In a city in the third type of sunshine area in my country, it is a typical summer night. The outdoor ambient temperature is between 26-29°C.

[0071] At night, the raw water is heated by an air source heat pump system. Use reverse osmosis concentrated water with a conductance of 80,000 μs / cm as the raw water, and when the temperature of the raw water rises to 60°C, the flow rate of the raw water in the raw water tank is controlled to 250L h by the rotameter 17 -1 , running continuously for 10 hours, the maximum membrane flux obtained is 18L m -2 h -1 , with an average membrane flux of 17.7L m -2 h -1 ; The conductivity of the product water is maintained at 130-200μS·cm -1 Around, the desalination rate is higher than 99.6%. The use of air-source heat pump system can completely replace electric heating at night, and the calculated theoretical energy-saving efficiency is 60%.

[0072] Precautions:

[0073] Due to the high conductivity of raw water, when the raw wa...

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Abstract

The invention discloses a novel solar membrane distillation system using a gas source type heat pump. According to the present invention, when sunshine is sufficient at a sunny day, the raw water in the membrane distillation process is heated by the solar heat collection device, such that the energy consumption of the membrane distillation process is overall reduced; when the working efficiency ofthe solar heat collection system is not high at a cloudy day or night, the raw water is heated by the gas source type heat pump as the assisted heat source while the two membrane distillation assemblies connected in series and having heat recovery function can completely recover the water vapor phase change heat so as to improve the thermal efficiency of the process; and the gas source type heatpump-solar membrane distillation composite apparatus has the high integration degree, and can simplify the operation and reduce the installation maintenance cost.

Description

technical field [0001] The invention relates to a solar membrane distillation composite system, specifically relates to using a solar vacuum heat collecting tube to heat raw water when the light intensity is sufficient on a sunny day; when it is cloudy or at night, an air source heat pump is started to obtain heat from the surrounding environment to assist heating Raw water. The system can make the membrane distillation process achieve the purpose of saving energy and reducing consumption as a whole. At the same time, the membrane distillation module with a special structure can recover the phase change heat of water vapor and improve the thermal efficiency of the process. Background technique [0002] Solar membrane distillation technology is a new technology that combines membrane distillation with solar thermal collectors. Since the raw water needs to be heated by an electric heating device in the traditional membrane distillation process (when there is no industrial wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/36B01D63/02B01D65/02C02F1/44
CPCB01D61/364B01D61/368B01D63/02B01D65/02B01D2321/162B01D2321/164C02F1/447C02F2303/10
Inventor 郭智张新妙栾金义彭海珠
Owner CHINA PETROLEUM & CHEM CORP
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