Surface heating of greenhouses is done by applying waste heated water on the outside of the greenhouse at the ridge and allowing this water to flow in a thin layer over the roof and sidewall surfaces. The water is then collected in gutters and returned to its source. The main advantages of this heating system over others for heating greenhouses with waste heat are its low capital costs and the fact that it can utilize wastes at quite low temperatures. This system can make effective use of water at temperatures as low or perhaps lower than the temperature to be maintained in the greenhouse; however, some supplemental greenhouse heating is required under these conditions.
Walker, P. N. and Rand, H. J., "Surface Heating Greenhouses with Waste Heat" (1980). UMR-MEC Conference on Energy / UMR-DNR Conference on Energy. 235, pp. 212-218.
7th Annual UMR-MEC Conference on Energy (1980: Oct. 14-16, Rolla, MO)
Article - Conference proceedings
Energy in Building Design
© 1980 University of Missouri--Rolla, All rights reserved.
16 Oct 1980