Abstract
This paper proposes environmental energy diagnosis for detached houses in the cold region and shows the diagnosed cases of monitored houses using efficient energy equipments for the purpose of energy saving in the residential sector. We adopted a polymer electrolyte fuel cell, a CO_2 heat pump water heater, a ground source heat pump, and a photovoltaic power generation as efficient energy equipments. First, we implemented performance evaluation on each of the efficient energy equipments and actual field measurements at monitored houses. Second, the coefficient of primary energy consumption (CPEC) was proposed as an index for the energy conservation. As a result, the excellent performance of the fuel cell was shown at the present stage. Finally, we carried out analyses on the lifestyle of monitored houses and the performance of lights and appliances. Relatively low cost for the energy conservation strategies and improving measures of the environmental consciousness promise reduction of primary energy, and most evaluation indices become superior compared with standard values.
