Study On Thermal Comfort Of Outdoor Activity Space In Mountain City Park Of Mianyang City

With the rapid development of urbanization,the concept of sustainable development has been further promoted,and the study of microclimate has been paid more and more attention to in urban planning and urban design.combined with today’s technical means,according to the climate of different regions,Terrain conditions are actively carried out on the design phase of the thermal environment evaluation of the relevant research,in order to obtain economic energy-saving,healthy and comfortable win-win results.At present,there are microclimate studies on specific spaces such as residential areas,pedestrian streets,urban commercial areas and urban parks at home and abroad,and a corresponding evaluation system has been put forward.The outdoor environment design of the park activity space is less involved,and the study of the microclimate of the park is in line with the development trend of climate design.Therefore,this paper selects mianyang city four mountain-type urban park as the research object,through questionnaire,on-site testing,software simulation and other links,summarize and analyze the change of thermal comfort in the typical weather of Mianyang Mountain Park in the summer and winter,and take Mianyang Mountain Park activity space environment as the target threshold,Try to put forward the preliminary climate adaptability of the park optimization design opinions.Specific research work is as follows:(1)Mianyang area research object urban mountain park activity space real analysis first of all,to Fuller Hill,Nanshan Park,Xishan Park,Longshan four city parks as the object,in the summer and winter two typical weather,to carry out a survey for climate monitoring and heat perception questionnaire distribution,to obtain a large number of actual measurements of climate parameters,Including wind speed,thermal radiation,atmospheric temperature,surface temperature,black ball temperature,humidity,and thermal comfort poll questionnaire collected the participants of each target of the population’s thermal perception evaluation,including thermal comfort,thermal preference,adaptive voting.Through the statistical calculation of the data,the preliminary analysis results in the thermal comfort law of the park open activity space in Mianyang city area,and summarizes the landscape design techniques of each park.(2)The thermal comfort PET threshold calculation of the study object is calculated with the physiological equivalent temperature value(PET)calculated by Ray Man model as the analysis index,the thermal comfort SET threshold of the subject is calculated by linear equation,and then the prediction and performance of the hot comfort voting of residents based on the thermal comfort index are calculated,and the normal distribution method couples the comfort value to make the fitting curve proofreading.And evaluate the applicability of the thermal comfort index of the activity space,and determine the correlation between the thermal comfort index and the landscape elements in the landscape design process of the park,and calculate the influence degree quantitatively by combining the thermal preference demand verification of the activity in the citizen park.(3)Based on thermal environmental evaluation,Mianyang Mountain Park landscape features matching planning strategy To take the "Zero Optimization Program" as an example,using the available meteorological parameters combined with software simulation to evaluate the actual design plan for thermal comfort,quantitative analysis of the design points of different landscape elements and different elements combination plan,give skew based on thermal environment adjustment And for the winter cold and hot mountain city park in the hot environment comfortable to create a prediction optimization of the design ideas and reference indicators.