Greenhouse operators know that the costs associated with heating, cooling, and ventilating a greenhouse in the northern United States are substantial. Carefully illustrated with over 40 explanatory diagrams in its 42 pages, Energy Conservation for Commercial Greenhouses contains detailed information on such subjects as the effects of windbreaks and building orientation on energy use, the properties of various glazing materials, and the benefits and drawbacks of retractable blankets and other insulation systems. Particularly useful for the commercial grower is the bulletin's discussion of space utilization within the greenhouse, including sections on movable bench systems, warm floor growing systems, bench-floor combination systems, rack growing, and hanging baskets. The bulletin also contains a worksheet to help calculate heat loss through the walls, roof, and floor of the greenhouse, a table which compares the costs of different types of fuel per unit of heat produced, and a list of references for further reading. Energy Conservation for Commercial Greenhouses will be of interest to those planning to construct a greenhouse, as well as those who wish to renovate an existing greenhouse for more efficient energy use.
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Orders from outside the United States must be prepaid in U.S. funds.