Energy conservation potential of inner thermal curtain in an even span greenhouse

In this study a thermal model has been developed to see the effect of inner thermal curtain on the thermal performance of an even span greenhouse for Srinagar (34.08° N), India. The analysis incorporates the study of thermal performance of three types of greenhouses (I) single zone greenhouse (without curtain) (ii) two zone greenhouse (with one curtain) and (iii) three zone greenhouse (with two curtain). The thermal performance of a greenhouse having one and two thermal curtain has been compared with greenhouse without thermal curtain. It is seen that the fluctuations in temperature in the vicinity of plants are more in greenhouse without any curtain in comparison to other two greenhouses; whereas temperature during night time in first zone of three zone greenhouse is significantly more with comparison to greenhouse without curtain and greenhouse with one curtain