| The university cafeteria is a place for dining for teachers and students in universities,and is one of the most frequently used buildings in universities.There are a large number of existing university cafeteria buildings in China,most of which were built in the early 21 st century.Due to incomplete construction standards,the thermal insulation performance of university cafeteria buildings is generally not ideal,resulting in energy consumption issues for heating and cooling that are not conducive to the development of green campuses.Therefore,it is urgent to reform and improve the thermal insulation performance of university cafeterias.In addition,there is a common problem of poor indoor physical environment in existing university canteens,among which the problems of stuffiness,oil smoke odor,and virus infection caused by poor wind environment are the most prominent in the dining area of university canteens.Creating a healthy and comfortable new type of canteen space to meet the dining and activity needs of contemporary university teachers and students has also become an important link in the urgent need for renovation of university canteens.In summary,under the guidance of green concepts,the transformation of university canteens and the application of passive transformation strategies to improve building insulation and natural ventilation performance are the issues that need to be addressed in this article.This article takes the university cafeteria buildings located in Jinan,a cold region,as the research object.The second chapter of the thesis summarizes the current situation and problems of university cafeterias in the region through theoretical research,standard research,engineering case research,on-site data measurement,and questionnaire survey related to university cafeteria architecture,and finds corresponding renovation basis to provide support for the subsequent renovation strategy proposal.In the third and fourth chapters of the thesis,targeted renovation strategies are proposed and simulated to address the prominent issues of thermal insulation and natural ventilation in university canteens in Jinan.For building insulation and thermal insulation,Chapter 3 of the thesis proposes specific renovation strategies for the enclosure structure and thermal buffer space.By establishing a model of university canteens in Jinan and simulating it,the obtained heating and cooling energy consumption values reflect the improvement of building insulation and thermal insulation performance by the renovation strategy.At the same time,combined with economic analysis,the economic benefits brought by insulation and thermal insulation renovation are quantified;For the natural ventilation renovation of buildings,Chapter 4 of the thesis proposes renovation strategies from four aspects: ventilation external windows,auxiliary ventilation component guide plates,flat space,and vertical space.It simulates and analyzes the impact of each renovation strategy on the indoor natural ventilation effect,and uses wind speed and air age as evaluation indicators to determine appropriate renovation strategies.Finally,for the general renovation principles and specific renovation strategies during the renovation process,Chapter 5 of the thesis simulates and verifies the first restaurant of Shandong Jiaotong University(Changqing Campus)through an engineering example.The results indicate that the renovated cafeteria building can achieve improved thermal insulation performance and natural ventilation effect,and the economic benefits of the building have also been improved.Therefore,this research result can provide certain reference significance for the green renovation of university cafeteria buildings in Jinan region.. |