Solar energy and waste heat utilization with greenhouse-residence combinations

Integration of a residence and greenhouse into a single system allows the benefits of both at an appreciably reduced cost not much above that of conventional housing, thus developing a mutual benefit. Three porototypes were constructed and tested using two basic concepts. One concept featured a solar collector in addition to the greenhouse, and the other utilized only a greenhouse. Analysis indicated that initial costs of the greenhouse-residences were comparable with those for conventional housing, and experience indicates that the two environments are compatible. Two-blower air-handling systems were more economical and effective than single-blower systems. Natural shade and greenhouse curtains had appreciable effects on its performance. Tightness of greenhouse and the number of covers also affected solar performance. During the coldest part of winter, plant production did not justify the energy required to maintain greenhouse temperatures for plant growing.