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Abstract
The foundation, principle and prior condition and engineering economic Evaluation Criteria of engineering economic analysis are introduced. The economy for a solar energy/air source heat pump system is analyzed. Through a single air-cooled heat pump system, air conditioning in summer + winter heating systems, solar / air source compound heat pump system model analysis and comparison of three systems, integrated initial investment and running costs of both, come to solar / air source compound heat pump system has certain advantages in economical efficiency.
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