Abstract The equipment configuration of an LFG fueled biogas engine driven air source heat pump system
was studied. The process flow for collecting and purifying LFG was analyzed, and the LFG collection and
purification meothod was determined. An experimental apparatus was set up, and the effect of biogas engine
speed variation on LFG consumption, exhaust fume temperature of biogas engine, recovered waste heat from
exhaust fume and clinder liner, coefficient of performance (COP) of the heat pump and primary energy ratio
(PER) of the system were experimentally tested.