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Abstract
A review is given of the available models that have been used to predice the thermal performance of residential attics. The models are first compared qualitatively on the basis of the following features: treatment of ventilation air, inclusion of heat capacities of the roof, ceiling and air space, treatment of radiation heat exchanges, inclusion of heat transfer through gable ends, and dependence of heat transfer coefficients upon temperature and temperature difference. A brief description is then given of a facility for measurements of attic thermal performance under simulated steady state adn dynamic conditions. Included in this description are the boundary conditions to be imposed on attic test sections. Ceileing heat fluxes and attic air temperatures predicted by the various models are then compared to some preliminary results of tests under controlled conditions.
A review is given of the available models that have been used to predice the thermal performance of residential attics. The models are first compared qualitatively on the basis of the following features: treatment of ventilation air, inclusion of heat capacities of the roof, ceiling and air space, treatment of radiation heat exchanges, inclusion of heat transfer through gable ends, and dependence of heat transfer coefficients upon temperature and temperature difference. A brief description is then given of a facility for measurements of attic thermal performance under simulated steady state adn dynamic conditions. Included in this description are the boundary conditions to be imposed on attic test sections. Ceileing heat fluxes and attic air temperatures predicted by the various models are then compared to some preliminary results of tests under controlled conditions.
Date
12/1979
12/1979
Author(s)
Wilkes, Kenneth
Wilkes, Kenneth
Page(s)
436-455
436-455
Keyword(s)
residential attic; modeling; thermal performance; ventilation; heat transfer
residential attic; modeling; thermal performance; ventilation; heat transfer