الفهرس 
Literature ReviewOnly 14 pages are availabe for public view
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Abstract
Solar energy which is an abundant, clean and safe source of radiation is an attractive
substitute for conventional fuels for a passive and active heating of greenhouses. Passive solar
systems are used to provide space and water heating for greenhouses or buildings relying on
the natural heat transfer forces of conduction, convection and radiation to distribute the
collected heat to the surrounding area.
The overall objective of this study was to develop a simulation model for the passive solar
greenhouses. Therefor, a solar greenhouse model was designed by using Simulink (MATLAB
(PALM, 1999)), which is an interactive tool for modeling, simulating and analysing dynamic
systems. The essence of this method is the assumption that the heat capacities of the
greenhouse are lumped in certain nodes, which are greenhouse cover, soil, plants, north wall
and greenhouse air. The temperature of each node is spatially uniform. For such a model, the
energy balance was simulated. The thermal radiative, sensible, latent, and conductive heat
fluxes were modeled by mathematical equations in terms of unknown temperatures and
vapour pressures.