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Process and device to detect a risk of water condensation on a surface being in contact with a wet air volume

  • US 5,568,977 A
  • Filed: 02/03/1994
  • Issued: 10/29/1996
  • Est. Priority Date: 02/24/1993
  • Status: Expired due to Fees
First Claim
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1. A process for detecting risk of water condensation on a surface in contact with a volume of wet air, comprising the steps of:

  • (a) placing a sensitive element on the surface causing the element to take on a temperature corresponding to the surface'"'"'s temperature,(b) heating the sensitive element during a first heating phase with a heating device until a temperature higher than the surface'"'"'s temperature is reached,(c) recording time duration and increase in temperature of the element during the first heating phase,(d) cooling the sensitive element during a cooling phase with a cooling device having the same thermal capacity as the heating device until a temperature lower than the surface'"'"'s temperature is reached,(e) recording time duration and decrease in temperature of the element during the cooling phase,(f) comparing (1) the ratio of the first heating phase time duration to the temperature increase during the first heating phase to (2) the ratio of the cooling phase time duration to the temperature decrease during the cooling phase, wherein a difference between the ratios (1) and (2) corresponds to a risk of condensation on the surface.

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