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An Analysis of Efficiency Improvements in Residential Sized Heat Pumps, Final Report, May 1986
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The objectives of this study included: (1) development of classes of heat pumps, (2) evaluation and selection of a suitable heat pump design model, (3) characterization of suitable baseline heat pump designs, (4) selection of design options that can be used to improve heat pump efficiency, and (5) development of heat pump designs to cover the whole spectrum of efficiencies available today and those that may be technologically feasible in the next few years.
O'Neal, D. L.; Murphy, W. E. (1985). An Analysis of Efficiency Improvements in Residential Sized Heat Pumps, Final Report, May 1986. Lawrence Berkeley Laboratory, University of California. Available electronically from