Method and apparatus for the desorption of a material which adsorbs moisture
AssigneeBehr GmbH & Co.
InventorsNoureddine Khelifa, Karl Lochmahr
Life of this patent
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Abstract
The invention relates to a method for the desorption of a sorbent by an air stream which is delivered by a blower and, prior to entering the sorbent, is heated. In order to reduce the desorption time, provision is made for adjusting the mass of the air stream as a function of the outlet temperature of the air stream exiting from the sorbent, in such a way that, when a preset temperature limit value is reached, the mass of the air stream is reduced, and the desorption is continued with an air stream heated to a higher temperature. The method is particularly suitable for the desorption of adsorbent in sorption reactors contained in refrigerant-free air conditioning plants.
Claims16
A method for the desorption of a sorbent material which adsorbs moisture, comprising the steps of:
- heating an air stream to a first inlet temperature, prior to entering the sorbent material, in a heating device;
- passing the heated air stream through the sorbent material at a first mass flow rate to desorb moisture therefrom;
- measuring the exit temperature of the air stream as it exits from the sorbent material;
- in response to said exit temperature reaching a predetermined temperature limit value, adjusting the first mass flow rate of the air stream to a second mass flow rate, lower than said first mass flow rate, as a function of the exit temperature of the air stream exiting from the sorbent material, whereby said first inlet temperature increases to a second inlet temperature higher than said first inlet temperature;
- and
- continuing desorption with the air stream at said second mass flow rate and said second inlet temperature.
A device for implementing a method for the desorption of a sorbent material which absorbs moisture, comprising:
- a blower having an air exit conduit;
- a heating device connected downstream of said air exit conduit to receive and heat air exiting from said blower;
- a container for containing sorbent material, connected downstream of said heating device for receiving heated air from said heating device;
- a temperature sensor disposed in the outlet air stream exiting from said container;
- and
- a control unit connected to control the speed of said blower in response to temperature information received from said temperature sensor.
Dependencies are inferred from the claim text.