การส่งผ่านรังสีอาทิตย์ของโรงเรือนพืชแบบวาแรนในประเทศไทย

Abstract

        This research was conducted to determine and evaluate transmissivity of black saran greenhouse in Thailand from inside and outside global radiation data. Four varieties of saran were collected from market in Thailand. The results showed that the absorption of 50%, 60%, 70% and 80% saran were found the transmissivity values of 42%, 24%, 20% and 10% saran respectively. The values of the transmissivity were agreed very well with the absorption because of rms discrepancy less than 1. The differences between inside and outside temperature of 50%, 60%, 70% and 80% saran were 1.80 oC, 2.19 oC, 2.71 oC, 4.00 oC respectively. It can be concluded that saran with difference transmissivity is suitable for each type of plant growth.