An Economic Analysis of Operating a Simulated Two-Acre Greenhouse Utilizing Waste-Water Heat

Environmental and economic assessment of a greenhouse waste heat exchange

“…The Shand power station in Saskatchewan opened a waste heat greenhouse in 1991, and is continuing to grow tree seedlings for use as a carbon offset (SaskPower, 2010). In addition, several studies have previously investigated the feasibility of using waste heat from power generation facilities, and in some cases have constructed test greenhouses (Manning and Mears, 1981;Helgeson et al, 1986;Olszewski, 1978).…”

“…It should be noted that in general, combustion CO 2 does not produce as high of a crop yield as liquid CO 2 , as it is more difficult to achieve enrichment set points without also effecting the greenhouse temperature and therefore the revenues from these two techniques may be different. Additionally, the steeper slope of this line suggests that a greenhouse utilizing combustion CO 2 is much more susceptible to fluctuations in the price of natural gas, due to its higher dependence on natural (Beers and Biswas, 2008) $150,000.00 Pipe system (Helgeson et al, 1986) $310,662.00 Backup burner ($/MW) (Chau et al, 2009 gas for heating and CO 2 enrichment. The production of pure industrial CO 2 is spread among a variety of sources, such as natural gas, coal, other hydrocarbon sources, and as a by-product of industrial processes such as corn-to-ethanol plants.…”