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Abstract
The method currently used to screen construction types for possible condensation in the steady state ASHRAE dew point technique. This method estimates the outside conditions involved in daily and seasonal cycling of temperature and humidity. Other important characteristics of walls include the total amount of moisture accumulated during the winter and the length of time the moisture remains in the wall during the spring and summer months. This paper examines the effect of location and magnitude ofthe permeance of building materials, solar heating, daily and seasonal climatic variations, indoor relative humidity, and insulation level on the dynamic moisture behavior of a wall. Hourly calculations using weather data from the Minneapolis area are used to determine dynamic behavior for several wall types. Limitations ofthis method are discussed.
The method currently used to screen construction types for possible condensation in the steady state ASHRAE dew point technique. This method estimates the outside conditions involved in daily and seasonal cycling of temperature and humidity. Other important characteristics of walls include the total amount of moisture accumulated during the winter and the length of time the moisture remains in the wall during the spring and summer months. This paper examines the effect of location and magnitude ofthe permeance of building materials, solar heating, daily and seasonal climatic variations, indoor relative humidity, and insulation level on the dynamic moisture behavior of a wall. Hourly calculations using weather data from the Minneapolis area are used to determine dynamic behavior for several wall types. Limitations ofthis method are discussed.
Date
12/1979
12/1979
Author(s)
Michael Stewart
Michael Stewart
Page(s)
887-897
887-897
Keyword(s)
moisture analysis; thermal performance; condensation; solar heating; climatic variations; insulation
moisture analysis; thermal performance; condensation; solar heating; climatic variations; insulation