Abstract
This paper describes the effects of the transparent and thermally insulated walls on solar heat collection as well as the shading of infrared radiation in a greenhouse.
Three types of film were provided to construct a greenhouse wall; S: transparent polyester film, R: light transmissive and thermally reflective film and, A: reflective alminum foil, we constructed single to triple layered model greenhouses and examined their performance.
From the viewpoints of light transmission and thermal insulation, the following combination proved to obtain the best performance; S+S+S on the south wall, S+R+S on the roofs and S+A+S on the north wall.
