Study on suitable heating modes in northern China based on localized life cycle assessment

The heating energy consumption accounts for a large proportion in the total energy consumption of buildings, so its environmental impact cannot be underestimated. Adopts different life cycle impact assessment (LCIA) methods to evaluate the heating sources commonly used in office buildings in northern China, and establishes a localized LCIA method according to local environmental policies and energy regulations. The results show that different LCIA methods have much consistency in the evaluation results of global warming, acidification and eutrophication. The localized LCIA method and other LCIA methods have different evaluation results in resource exhaustion. The former concludes that oil-fired boilers have the greatest impact on resource exhaustion. In the weighted results of environmental impact, the localized LCIA method concludes that ground-source heat pumps and gas-fired boilers have certain environmental benefits, except for the gas-fired cogeneration. Oil-fired boilers are not worth promoting with poor environmental benefits.