IICRC WRT Study Questions and Answers Graded A+

Psychrometry - ans ----Study of the relationship between air, humidity, and temperature and their effects on materials and comfort levels Evaporation - ans ----Process of changing a liquid to a vapor Dehumidification - ans ----Reducing moisture content in the air Dry Bulb Temperature - ans ----Temperature degree registered by a thermometer Dew Point - ans ----The point at which humidity in the air reaches saturation or 100 Percent RH Saturation Point - ans ----Point at which air or materials can absorb no more moisture, drying stops, and air temperature reached dew point Condensation - ans ----Conversion of water from vapor state back to liquid state Relative Humidity (RH) - ans ----The amount of moisture in a given volume of air, expressed as a percentage, at a given temperature Infiltration - ans ----Migration of air into an area from an outside area due to high VP differential Balanced Drying - ans ----Ideal drying situation in which the rate of evaporation is equal to or slightly less than the rate of dehumidification or ventilation GPP - ans ----Unit used to measure humidity ratio 7000 Grains of water vapor - ans ----Equals 1 pound of water 14 cubic feet of dry air - ans ----Equals 1 pound Humidity Ratio - ans ----The weight of suspended moisture in air expressed in GPP Hygroscopic - ans ----Material that readily absorbs and retains moisture