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.

Meeting Name

7th Annual UMR-MEC Conference on Energy (1980: Oct. 14-16, Rolla, MO)

Document Type

Article - Conference proceedings


Energy in Building Design

Document Version

Final Version

File Type





© 1980 University of Missouri--Rolla, All rights reserved.

Publication Date

16 Oct 1980