A self-pressurized lithium bromide bubbling absorption device and its control method
An absorption device and lithium bromide technology, applied in the field of absorbers, can solve the problems of toxic ammonia water, restrict the development of lithium bromide bubbling absorption, and cannot guarantee safety, etc., so as to improve the absorption effect, improve the structure miniaturization and optimize the design, and strengthen the thermal mass. The effect of delivering performance
Active Publication Date: 2021-10-08
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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Problems solved by technology
Ammonia water bubbling absorption started earlier and is suitable for producing cooling capacity below 0°C, but due to the characteristics of ammonia water poisoning and high-pressure operation, the safety cannot be guaranteed; while lithium bromide absorption refrigeration is suitable for producing cooling capacity above 0°C, However, the working condition that the absorption process needs to be operated in a vacuum restricts the development of lithium bromide bubbling absorption.
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[0028] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or terminal equipment comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements identified, or also include elements inherent in such a process, method, article, or end-equipment. ...
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The invention discloses a self-pressurized lithium bromide bubbling absorption device and a control method thereof, which use supercharging technology to realize bubbling under negative pressure: in the steam system, the water vapor is pressurized by a frequency conversion booster pump to make the water vapor in a vacuum state The steam bubbles successfully in the lithium bromide solution; micro-pressure one-way balance valve to balance the pressure: a micro-pressure one-way balance valve is installed at the inlet of the gas discharge pipeline to quickly discharge unabsorbed steam and balance the pressure in the system to ensure a stable atmosphere in the absorber. vacuum state. The invention realizes the bubbling absorption process of lithium bromide solution in a vacuum state, provides effective ways and measures for exploring and strengthening the heat and mass transfer performance of lithium bromide absorption refrigeration / heat pump units, and improving the internal absorption effect of lithium bromide absorption refrigeration / heat pump units. It is of great significance to improve the performance of the refrigeration / heat pump system and optimize the design of the structure miniaturization.
Description
technical field [0001] The invention relates to an absorber in an absorption refrigerator, in particular to a self-pressurized lithium bromide bubbling absorption device and a control method thereof. Background technique [0002] Absorption refrigeration / heat pump technology occupies an important position in the field of refrigeration, air conditioning and waste heat recovery due to the advantages of low-grade heat consumption and no pollution to the environment, while the performance of absorption refrigeration machines depends to a large extent on the absorption performance of the absorber. Improving the physical structure and absorption mode of the absorber is an effective means to improve the performance of the whole machine. At present, there are two absorption methods of the absorber: falling film absorption and bubbling absorption. The bubbling absorption has the characteristics of large absorption area and good heat transfer effect because the absorption gas fully co...
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IPC IPC(8): F25B37/00F25B15/06F25B49/04
CPCF25B15/06F25B37/00F25B49/043Y02B30/62Y02A30/27
Inventor 王刚董佩文刘芳张群力徐荣吉
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE