Research On The Selection Method Of Outdoor Moisture Parameters For Natatorium Building And Its Application In Energy Consumption Prediction

In recent years,with the development of society and the improvement of technology,people’s cultural and entertainment living standards have also been continuously improving.In order to promote the development of comprehensive fitness cause and enrich people’s amateur cultural life,more and more Natatorium have begun to enter people’s vision.However,the design problem of HVAC in Natatorium also follows.The indoor air environment of Natatorium is very complex,and there is a large amount of moisture dissipation,including pool water moisture dissipation,pool side wetland moisture dissipation and personnel moisture dissipation.If the minimum ventilation rate is calculated too low and the installed capacity of the air conditioning equipment is too small,it will lead to indoor air temperature and humidity not meeting the design requirements,which not only makes people feel uncomfortable,but also causes mold and bacteria to grow inside the building,shortens the service life of the building,and pollutes the indoor air environment.On the contrary,if the minimum ventilation rate is calculated too high,it will lead to excessive selection of installed capacity for air conditioning equipment,resulting in high operating costs and energy consumption.Therefore,accurate acquisition of outdoor design parameters of Natatorium is a necessary condition to ensure the accuracy of design calculation results.This article mainly conducts research on the following three aspects:(1)Study on the division of transition season suitable for ventilation and dehumidification conditions of Natatorium.In the study,it was found that if transitional seasons are calculated using historical data,there will be a problem of high computational complexity and difficulty in unifying the results.In response to the above issues,the concept of typical transitional season is proposed,which is a representative transitional season generated based on typical meteorological year data that can reflect climate characteristics.The results show that while the computational workload has been reduced by 30 times,the average error between the starting date of the transition season and the actual date of the previous years does not exceed 5 days.This method not only reduces the computational workload,but also solves the problem of inconsistent results.(2)Study on outdoor humidity ratio of Natatorium in transition season.There is no clear method to determine the humidity ratio in the specifications of our country.The current method in the project is mostly the ventilation curve method,but this method cannot reflect the assurance rate and has no clear reference value.In this regard,the typical transition season method is proposed,that is,a method to determine the outdoor humidity ratio in transition season by using hourly hot and wet meteorological parameters in combination with the design requirements of Natatorium and the characteristics of climate change.The results indicate that the calculated humidity ratio obtained by the typical transition season method can better meet the design requirements.(3)Recommendation does not guarantee the value of hours.In order to explore the impact of humidity ratio on building energy consumption and indoor thermal and humid environment risk level,a Natatorium building model was established,and the annual dynamic energy consumption simulation was carried out.And obtain the functional expression of humidity ratio distribution through curve fitting method,and analyze its variation pattern.Effectively amplify the non guaranteed hours from 50 h in the specification to 69 h,and obtain a recommended value for non guaranteed hours that not only saves energy but also meets design indicators.In view of the lack of research on outdoor design parameters of Natatorium buildings in Chinese codes,this paper carried out a series of studies.Six representative cities with different thermal divisions in China were selected to generate typical transition seasons for each city.The typical transition season method was used to calculate the design value of outdoor wet parameters of Natatorium in transition season.The minimum ventilation rate was used as the evaluation index to verify the rationality of the results.The impact of design values under various uncertainty rates on building energy consumption was explored through building energy consumption simulation.Provided designers with more valuable outdoor design parameters for reference.