Patent ID: 7758408
Filing Date: 2010-07-20
Classification: F24F,Y02B

Abstract:
1. A system for minimizing humidity in an enclosed structure, comprising: a) an outside humidity sensor for sensing relative humidity outside the enclosed structure; b) an outside temperature sensor; c) an inside humidity sensor for sensing relative humidity in the enclosed structure; d) an inside temperature sensor for sensing temperature in the enclosed structure; e) a ventilation system comprising at least one of a fan and a damper; and f) a computing unit that receives sensor information from the inside and outside temperature and humidity sensors, calculates an inside water vapor pressure and an outside water vapor pressure from the sensor information from the inside and outside temperature and humidity sensors, compares the inside and outside water vapor pressures, and generates one or more output signals to regulate supply ventilation in the enclosed structure based upon the comparison, wherein the ventilation system is regulated based on a difference in water vapor pressure between the inside and the outside of the enclosed structure so that the ventilation system turns on by activating the fan or opening the damper whenever the inside water vapor pressure is higher than the outside water vapor pressure to create a positive air pressure in the enclosed structure, and wherein the ventilation system turns off by deactivating the fan or closing the damper whenever the water vapor pressure is lower on the inside of the enclosed structure than on the outside of the enclosed structure.