Absorption plate for air conditioner

Abstract

The invention relates to an absorption plate, in particular of an absorption air conditioner for a vehicle, crossed by a stream of liquid absorbent fluid (10) flowing between two exchange surfaces (35) arranged relatively opposite one another, the exothermal absorption of a so-called coolant fluid in vapour phase taking place through said exchange surfaces (35) by increasing a concentration of the coolant fluid in the absorbent fluid (10), characterised in that the relative arrangement of the two exchange surfaces (35) forces at least one portion of the stream of absorbent fluid (10) to pass at least once through one of the exchange surfaces (35) and causes mixing of the stream of absorbent fluid (10).

Description

technical field [0001] The invention mainly relates to an absorber panel for an air conditioner installed in a motor vehicle. Background technique [0002] Devices for air conditioning by absorption are known from the prior art. For example, document FR2941773 describes an absorption air conditioner comprising absorption plates in which an absorption fluid, lithium bromide, circulates and absorbs a refrigerant fluid, water vapour. On the other hand, this system in particular has the disadvantage that the efficiency is limited by the absorption capacity of the absorption fluid refrigerant. In fact, during the exothermic absorption reaction on the surface, the absorption fluid, lithium bromide, heats up in contact with the refrigerant fluid, water vapor, and the surface layer is rapidly saturated with the refrigerant fluid. Absorption is limited by the transfer velocity at the center of the exothermic liquid stream and / or refrigerant fluid stream. The result is a rather wea...

AI Technical Summary

Problems solved by technology

This implementation is expensive because the process of making protrusions on the surface of the tube is not easily implemented, and its feasibility for large-scale production has not yet been demonstrated

Furthermore, this embodiment connects the protrusion to the surface on which the fluid flows and this makes it difficult to make any modifications to the protrusion or the surface

This also complicates supply, as the complexity of this part limits the number of suppliers

Therefore, this particular embodiment cannot be adapted to the automotive field, where flexibility and cost are parameters guiding the design

Finally, the bulkiness of such a system does not allow it to be integrated into a motor vehicle due to form constraints

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