Study On Energy-saving Design Of Hotels In Cold Areas Based On Ground-source Heat Pumps

The rapid development of the global economy,increasing energy consumption,environmental degradation,of which building energy consumption accounted for a considerable proportion.China's building energy consumption as a proportion of total energy consumption increased year by year,statistics show that from 2014 to 2018,the total energy consumption of buildings increased from 750 million tons of standard coal to 1.30 billion tons of standard coal,its energy consumption ratio increased from 17.7% to 27.9%.It is expected to reach 35 per cent by 2020.Energy consumption in public buildings is an important component,growing fastest of all buildings.And hotel buildings due to high spatial performance requirements,sustainable space environment control needs and large demand for hot water for life,energy consumption is prominent.Ground source heat pump technology has a high suitability for heating and cooling energy-saving design of hotel buildings,especially high-star hotel buildings,because of the high matching with the demand for heating and cooling load in hotels and the efficient utilization of natural heat and heat resources from renewable soil sources.At present,the research on the energy-saving design of hotels based on ground-source heat pump technology is limited,which seriously hinders the promotion and application of groundsource heat pump technology in hotel buildings.The research is based on the ground source heat pump technology of hotel building energy-saving optimization design,so it is of great significance to promote the green design of high-star hotel,the development of building energy saving in China.In this study,in view of the real problems of hotel energy-saving design of hotels with ground-source heat pumps in cold climate areas,the resource climate characteristics of cold areas are first combed,and the characteristics of high-star hotel building space and energy use are summarized,and then through design Builder's dynamic energy consumption simulation method.According to the characteristics of heat pump heat source in the ground source heat pump hotel building,the actual energy consumption of heating and cooling is verified according to the different overall spatial models.At the same time,based on the preferred overall spatial mode,the linear parallel-based population space mode is selected,and the actual energy consumption of heating and cooling is verified on the basis of its different internal space combination mode,and again based on the preferred internal space combination mode,the actual energy consumption of heating and cooling is verified in the end form of different ground source heat pump system.Finally,based on the above simulation results,based on the cold area of the ground source heat pump hotel energy-saving design,from the overall spatial mode,flat space organization and end-preferred form of three aspects,the corresponding energysaving design strategy is summarized.Therefore,it provides the basis and reference for the energy-saving design of hotel buildings based on ground-source heat pump in cold areas.