Wood Moisture Content

1.0 Objective The purpose of this exercise is for students to understand the relationship among miscellaneous variables, such as; dew back breaker, sexual intercourse humidness, fond(p) dehyd dimensionnisation touch and saturated vapor pressure. In addition, this lab familiarizes the student with sundry(a) tempers of amount channel relative humidity. 2.0 Background The triangular bandage psychrometer mode and Dew-point method are twain basic techniques in measuring air relative humidity in the environment. Air is a mix of gases, with 78% Nitrogen, 21% Oxygen and traces of Argon, Carbon Dioxide and piss vapor (Benson 2008). Relative humidity is defined as the ratio of partial vapor pressure in the air to the saturated vapor pressure(Siau 1995). Relative humidity directly relates to climate check into as it impacts comfort and health meaning that undefiled measurements of relative humidity are crucial. The sling psychrometer consists of two thermom eters, integrity with a wet taper attached, and the relative humidity toilet be calculated by the differences in readings on the two thermometers. If the contact air is dry, more moisture evaporates from the wick and a greater difference between the temperatures exist (Tannenbaum 1989). In contrast, the dew point method records the temperature at which condensation begins to form on the beakers impertinent surface.

Accurate measurements of relative humidity and dew point in distinguishable environments allow for a better understanding of climate ascendance and the vapor pressure associated with humidit y. 3.0 Materials and Methods This experi! ment required the accustom of sling psychrometers, metal beakers, ice, thermometers, acetone and distilled water. In the following paragraphs, a exposition of each method to measure relative humidity get out be provided. Sling psychrometer method: First, the wick of the wet-bulb was dipped in distilled water for 5-10 seconds. Then, one member rotates the psychrometer at a take velocity for at least 2 minutes until equilibrium has...If you want to get a sound essay, order it on our website: OrderCustomPaper.com

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