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Simulation

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Articles 31 - 32 of 32

Full-Text Articles in Energy Systems

A Stratified Air Model For Simulation Of Attic Thermal Performance, Florida Solar Energy Center, Danny Parker Jan 1991

A Stratified Air Model For Simulation Of Attic Thermal Performance, Florida Solar Energy Center, Danny Parker

FSEC Energy Research CenterĀ®

An improved computer simulation model for attics has been developed. The model accounts for detailed radiation, buoyancy and wind driven air flows and thermal stratification within the attic airspace. Through comparison with measured data, the paper examines the relative importance of the various modeling parameters and assumptions upon simulation accuracy. Stratification of the attic air was found to be a critical modeling characteristic which is typically ignored in building energy simulations. Both model and measurement results shows that air stratification increases significantly when low-emittance surfaces are included.


Heat Pump Research Programme At University College Dublin (1976), Seamus Timoney, Jim Mcgovern Jan 1976

Heat Pump Research Programme At University College Dublin (1976), Seamus Timoney, Jim Mcgovern

Conference Papers

This paper describes heat pump research at University College Dublin in 1976 relating to an air-to-air heat pump. The plant under test and its instrumentation are described and some measured performance data are presented. A heat pump simulation program is described. A theoretical comparison of refrigerants 12, 22 and 502 is presented with graphs of performance parameters as a function of operating conditions.