Abstract
A solar heat pump system, which combines renewable energy and modern energy saving technology, was creatively applied in heating system for biogas digester. In order to analyze its operation mode, the paper figures out the variation of the heat load and heat production in total at first. Moreover, based on the existing operating strategy, the paper creatively puts forward three optimal operation strategies for the solar energy heat pump heating system by analyzing overall energy consumption and simulation program in detail. When determining the optimal strategy, extreme weather conditions have also been taken in account to ensure safety. In the optimal operation strategy, it is possible to meet heat demand of the digester together with reducing energy consumption and utility costs at maximum.
