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Xi’an University of Architecture and Technology (西安建筑科技大学) 2020

Analysis of Applicable Technology Types of Evaporative Cooling Air Conditioners in Arid Regions of Northwest China

汪雨菲

Titre : Analysis of Applicable Technology Types of Evaporative Cooling Air Conditioners in Arid Regions of Northwest China

Auteur : 汪雨菲

Grade : Master’s Theses 2020

Université : Xi’an University of Architecture and Technology (西安建筑科技大学)

Résumé partiel
The research on the applicability of each technology type of evaporative cooling air conditioning is the premise to ensure the efficient and energy-saving operation of evaporative cooling air conditioning in the northwest dry area.However,in the early stage,the applicability of evaporative cooling air conditioning mainly focused on outdoor climate parameters,or further combined with the ideal indoor air supply point to form the applicability analysis model.Due to the complex building types and the climate in the arid area of Northwest China,the actual indoor state are different,and the use conditions of different units are different.It is difficult to characterize the actual indoor air-conditioning demand of different buildings only considering the theoretical cooling fraction obtained by outdoor parameters,and the operating conditions of various units are also different.Finally,the applicability of traditional evaporative cooling can not directly guide the application of evaporative cooling air conditioning in the northwest dry area.Therefore,on the basis of considering the influence of the actual cooling hours required by air conditioning in different indoor conditions,this study uses theoretical analysis,simulation calculation and other methods,combined with the diversity requirements of indoor state points and the actual use conditions of different technology types,this study analyzes the applicability of each technology type of evaporative cooling air conditioning,in order to overcome the traditional applicability analysis methods,most of them only focus on the outdoor climate parameters for climate zoning,and only study the ideal indoor state points,ignoring the impact of indoor parameters and the actual application conditions of various technologies,which is difficult to meet the requirements of indoor diversity.This study first combs the four main principles of evaporative cooling technology : the evaporative cooling fan,the evaporative air conditioner,the direct evaporative cooling unit and the indirect direct combined evaporative cooling unit,analyzes the air treatment process of the above four types of evaporative cooling technology by using the enthalpy humidity diagram,and obtains the use conditions of each technology.Combined with the existing evaporation cooling climate applicability zoning,the Energy Plus is used to calculate indoor temperature and the cooling load of each urban and rural building in the northwest arid area under different indoor state points and analyze the actual indoor state combined with the moisture content.

Mots clés : Evaporative cooling air conditioning ;Evaporative cooling potential ;Indoor state parameters ;Climate zoning ;Applicable technology types ;

Présentation (CNKI)

Page publiée le 26 mars 2022