Heat pump dual-heat-mass coupled humidification and dehumidification evaporation system and method

Abstract

A heat pump dual-heat-mass coupled humidification and dehumidification evaporation system and a method belong to the fields of energy and power engineering and evaporation. A condenser of a heat pump system is utilized to drive the evaporation system according to the energy transfer and conversion mechanism in a compression heat pump and an air-water system, and the energy utilization efficiency of the evaporation system is improved through humidification, dehumidification and the in-system heat recovery process. The advantage that the heat pump system is high in performance coefficient is fully utilized, restrictions of heat source conditions on the evaporation system are broken through, and meanwhile, mass transfer and heat transfer processes are introduced into the dehumidification process, so that the cost due to application of corrosion-resistant noble metals to a conventional surface condenser is greatly reduced; and sensible heat of in-system fresh water and concentrated solutions is fully utilized, so that the energy utilization efficiency of the evaporation system is improved, the energy-saving effect is obvious, and the heat pump dual-heat-mass coupled humidification and dehumidification evaporation system conforms to the national standards of energy conservation and emission reduction and the sustainable development strategy.

Description

technical field [0001] The invention relates to a heat pump dual heat mass coupled humidification and dehumidification evaporation system and method, belonging to the fields of energy and power engineering and evaporation. Background technique [0002] In the conventional humidification process, thermal energy is usually used to drive the humidification process. The evaporation system is inevitably limited by the heat source, and the energy utilization efficiency is low, and the combustion inevitably produces environmental pollution. The humidified air is directly discharged into the atmosphere, and the moisture and corresponding latent heat in the humid air are not effectively recovered. For the surface condenser used to recover moisture in humid air, the heat transfer coefficient based on the heat transfer between the air and the cold source is low, which eventually leads to a large heat transfer area, and the working fluid such as solution or sewage involved in the evapor...

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Problems solved by technology

For the surface condenser used to recover moisture in humid air, the heat transfer coefficient based on the heat transfer between the air and the cold source is low, which eventually leads to a large heat transfer area, and the working fluid such as solution or sewage involved in the evaporation system is usually caused by corrosive , corrosion-resistant precious metals must be used, resulting in large equipment investment costs

The research on introducing advanced energy-saving technologies, such as heat pump technology, into humidification and dehumidification evaporation systems and integrating energy-saving and high-efficiency evaporation systems has not attracted much attention

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