Research On Low Energy Design Strategies Of Coupled Solar Radiation And Radiative Sky Cooling For Hotels In Cold Climate Zone

The cold region is located in the northern part of China.It is far away from the coast,with low atmospheric moisture content and high atmospheric transparency,as well as abundant solar energy resources distributed.Resort hotels in cold region are mostly located in scenic areas with unique topography,away from urban air pollution,solar radiation and radiative sky applications have great potential.Based on the study of the main and passive utilization strategies of solar radiation and radiative sky to reduce building energy consumption,this paper starts from the perspective of overall layout and architectural design,and comprehensively considers the use of solar radiation and radiative sky cooling technology for hotel heating and cooling,analyzes the possibility of its combined utilization with building,and takes the hotel building in cold area as the research subject,aiming to propose a strategy for low energy consumption design of solar radiation and radiative sky cooling coupling.This paper first summarizes the design methods and cases of hotel buildings in cold region from three aspects: overall layout,functional space and area ratio.It extracts a typical model of the courtyard layout of a small resort in the cold region,and determines the geometry,material structure,and operational information parameters of typical energy consumption.The simulation software Honeybee was used to simulate the building energy consumption and analyze its energy consumption characteristics and verify the rationality of the simulated energy consumption.Then analyzes the principle and influencing factors of radiative sky cooling technology,uses Ladybug to establish a radiation cooling power calculation model,and inputs regional meteorological parameters to obtain the radiation cooling capacity of the region.And then,combining the current status of solar radiation and space radiation technology and the form of building integration,this paper expounds the coupling possibilities and coupling forms of solar radiation and radiative sky cooling technology and hotel architecture,and further deepens the design strategy of solar radiation and radiative sky cooling coupling application in cold regions based on the coupling form.According to the idea of overall design to monomer optimization,the low energy design strategy of solar radiation and radiative sky cooling coupling is proposed from three aspects: physical layout,selective radiation cooling shading system and roof photovoltaic radiant panel production system.On the basis of the above research,the typical model extracted in the second chapter is used as the carrier,and the energy saving effect of the design strategy is quantitatively analyzed according to the simulation process of the three strategies.In order to obtain better radiant energy for the building shape,Phoenics and Ladybug software are used to simulate the solar radiation heat of the building surface and the outdoor wind environment of the building,to screen and optimize the physical layout,and to improve the total radiant energy acquired by the building.The visor spacing and inclination change will affect the solar radiation acquisition in the summer building.The Honeybee software is used to simulate the influence of different selective cooling system on the cooling energy consumption in the cooling season.At the same time,the visor spacing and inclination are used as design variables.The degree of influence of the variation of the simulated design variables on the indoor cooling load in summer provides a reference range for determining the spacing and inclination of the building facade shading system.Finally,in the case of ensuring sufficient space for the hotel building roof,determine the available area of the roof,and lay the electric heating and cooling cogeneration photovoltaic radiant panels to realize the day-and-night time-sharing electric heating and cooling triple supply,calculate the roof electricity production,heat collection,cooling capacity and initial energy of the building.The coupling is used,and finally the technology is applied in the design practice,and the energy efficiency of the design strategy is quantitatively analyzed.This paper proposes an outlook from the perspective of low energy design strategies for solar radiation and radiative sky cooling coupling in hotel buildings in the cold region,improving the systematic simulation process,and improving the practicality of strategy practice.It is hoped that the research results can optimize building performance and reduce the use of solar radiation and radiative sky cooling,which can provide a reference for building energy consumption.