Saturated vapor pressure temperature sensitive dehumidification solution

Abstract

The invention discloses a saturated vapor pressure temperature-sensitive dehumidification solution, which comprises a solute and a solvent, the solute comprises the following components in percentage by weight: 5.63-54.40% of calcium bromide and 0.82-32.13% of an auxiliary agent, the auxiliary agent is a non-volatile salt, and the solvent is the balance of water. The dehumidification solution has the good saturated vapor pressure characteristic, namely, the saturated vapor pressure is as low as possible at the dehumidification working condition temperature and as high as possible at the regeneration working condition temperature, and therefore the dehumidification solution has the good dehumidification performance and regeneration performance at the same time. When the dehumidification solution prepared according to the invention preserves better dehumidification performance, the required regeneration temperature is lower, and the requirement on the grade of renewable energy is reduced.

Description

technical field [0001] The invention relates to a dehumidifying solution, in particular to a dehumidifying solution sensitive to changes in saturated vapor pressure with temperature. Background technique [0002] Dehumidifying solutions are widely used in industry, such as liquid desiccant refrigeration and heat pump systems. As the working carrier of the system, the physical properties of the dehumidifying solution have a great influence on the performance of the system. Among them, the saturated vapor pressure of the dehumidifying solution is the driving potential for mass transfer in dehumidification and regeneration, and is the most important physical parameter affecting the performance of the system. A dehumidifying solution with excellent properties must first have a low saturated vapor pressure, and then consider its corrosiveness. , viscosity, price and other factors. [0003] At present, the main focus of looking for a superior dehumidifying solution is to have the...

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Problems solved by technology

[0003] At present, the main focus of looking for a superior dehumidification solution is the vapor pressure as low as possible under the dehumidification working temperature (for example, 15-30°C), that is, it has good dehumidification performance. Commonly used dehumidification solutions include lithium bromide, lithium chloride, and calcium chloride. When these dehumidification solutions meet good dehumidification performance, their regeneration performance is poor, that is, a higher heat source temperature is required to drive and complete regeneration

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