Study On Air Source Heat Pump Heating Of Traditional Rural Residential Dwelling In Tangshan Based On Whole Life Cycle

From the “Air Pollution Prevention and Control Action Plan” in 2013,government implemented the air pollution control policy.Response to the problem of rural residential heating,coal was replaced with electricity gas.In order to explore the air source heat pump heating measures and the adaptability of rural residentials,whole life cycle of air source heat pump heating was studied.Enclosure structure,heating method,heating energy consumption and reconstruction intention of rural residential in Tangshan was investigated in the form of practical survey and questionaire.The heat transfer coefficient and model of enclosure structure of existing rural residentials was obtained through test.The accumulated heat load before and after the reconstruction of the existing rural residential was simulated by De ST software,and the relationship between hourly COP and ambient temperature was fitted and calculated.The evaluation system of the whole life cycle of air source heat pump heating had been established to calculate the environmental impact load and the pollutant emission per unit area per unit time.The energy structures and environmental effections of bulk coal,briquette and gas heating were calculated.By comparing the whole life cycle evaluation of the reconstructed and non reconstructed rural residential,it was found that the environmental impact load of the reconstructed building envelope was reduced by more than 75%.The air source heat pump heating was reduced by more than 80% compared with briquette heating model.With changing the enclosure structure and heating model,environmental impact load was reduced by 95%.The investment analysis and ecological cost calculation of heating forms were carried out.The virtual boundary method was used to calculate the pollutants impact.The investment payback period before and after the transformation was 3.46 a and 1.25 a.The results showed that the lowest ecological cost was air source heat pump heating,as 34.92 yuan/m~2/a.Its energy saving rate of return was 98.04%.Figure 27;Table 40;Reference 106...