Adsorption type refrigeration system based on enhanced mass transfer

Abstract

The invention discloses an adsorption type refrigeration system based on enhanced mass transfer. The adsorption type refrigeration system based on enhanced mass transfer comprises a first work chamberand a second work chamber. The first work chamber and the second work chamber are both independent cavities and connected through a vacuum valve. The first work chamber comprises a first adsorption tool, a first condenser, a first liquid storage device and a first evaporator. The first condenser is arranged in the horizontal direction of the first adsorption bed. The first liquid storage device is located at the lower end of the first condenser. The first evaporator is arranged on the lower side of the first adsorption bed. All units in the first work chamber and the second work chamber are identical in structure and symmetrically arranged. The adsorption bed is of a tube-fin type structure, and a plurality of sub-adsorption beds can be connected in parallel according to different refrigeration amounts. Silica gel / calcium chloride is used as the adsorbing agent, so that the mass transfer performance of the adsorption bed can be enhanced, the volume of a unit can be reduced, and theperformance of the unit is improved. The adsorption type refrigeration system based on enhanced mass transfer can utilize solar energy and other low-grade heat sources and improves resource utilization rate.

Description

technical field [0001] The invention relates to the field of refrigeration and the field of new energy utilization, in particular to an adsorption refrigeration system based on enhanced mass transfer. Background technique [0002] Energy demand and environmental pollution are major issues facing society today. Building energy consumption accounts for 40% of the world's total energy consumption, of which cooling energy consumption is growing steadily at an annual growth rate of 6%. Traditional vapor compression refrigeration uses HCFCs and HFCs as refrigerants, causing ozone layer destruction and greenhouse effect. In response to this problem, the international community has successively reached a series of conventions such as the "Montreal Protocol" and the "Kyoto Protocol", reaching a plan to accelerate the phase-out of HCFCs and an amendment to reduce and control HFCs. Therefore, it is urgent to develop and promote the application of energy-saving and environment-friendl...

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Problems solved by technology

[0003] At present, the adsorption refrigeration technology has the following problems: (1) Due to the small adsorption capacity of the adsorbent cycle, the adsorption refrigeration unit is bulky and the energy efficiency of the system is low; (2) most adsorption refrigeration systems operate in a vacuum environment If the system is operated under low conditions, the use of too many vacuum valves and pipelines will lead to a decrease in system stability, difficulty in vacuum maintenance, and reduced system energy efficiency.

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