A research about the evaluation of view factors concerning the thermal radiation exchange in greenhouses was carried out. The most diffused methods for calculating view factors were analysed and different solutions were found for evaluating the view factors between radiating surfaces such as the covering and the soil of the greenhouse. Particularly methods were developed in order to calculate the view factors for the case of single span and multispan greenhouses closed with triangular roof. Analytical solutions and results of numerical development of greenhouses view factors were obtained by means of methods such as the cross cords method, the contour integration method and the discretisation one.
Numerical development of greenhouses view factors
VOX, Giuliano;RUSSO, Giovanni;
1996-01-01
Abstract
A research about the evaluation of view factors concerning the thermal radiation exchange in greenhouses was carried out. The most diffused methods for calculating view factors were analysed and different solutions were found for evaluating the view factors between radiating surfaces such as the covering and the soil of the greenhouse. Particularly methods were developed in order to calculate the view factors for the case of single span and multispan greenhouses closed with triangular roof. Analytical solutions and results of numerical development of greenhouses view factors were obtained by means of methods such as the cross cords method, the contour integration method and the discretisation one.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
