Study of the Convective Heat Transfer Coefficient of Different Building Envelope Exterior Surfaces
Convective heat transfer on the exterior surface of the building envelope is an important component for building energy consumption. The calculation of energy consumption depends on the convective heat transfer coefficient (CHTC) of the exterior surface of the envelope. The existing research does no...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-06-01
|
| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/12/6/860 |
| _version_ | 1797489285385945088 |
|---|---|
| author | Xiaotong Xue Shouxu Han Dongjun Guo Ziwei Zhao Bin Zhou Fei Li |
| author_facet | Xiaotong Xue Shouxu Han Dongjun Guo Ziwei Zhao Bin Zhou Fei Li |
| author_sort | Xiaotong Xue |
| collection | DOAJ |
| description | Convective heat transfer on the exterior surface of the building envelope is an important component for building energy consumption. The calculation of energy consumption depends on the convective heat transfer coefficient (CHTC) of the exterior surface of the envelope. The existing research does not fully consider the effects of the airflow field around the building on the CHTC of different envelope exterior surfaces. In this paper, the relationships between the CHTC and influence factors were investigated for the isolated building. Response surface methodology (RSM) and support vector machine (SVM) algorithms were integrated with the single building simulation to build the fitting formulas. Then, the fitting correlation between CHTC and different influencing factors was validated by the heating building simulation. The results showed that the CHTC of the building exterior surface was related to the wind velocity, wind direction and temperature difference. Additionally, the fitting formulas had good accuracy in calculating the CHTC under different conditions. The SVM algorithm (averaged error: 3.34%) performed slightly better than the RSM algorithm (averaged error: 4.84%). |
| first_indexed | 2024-03-10T00:14:22Z |
| format | Article |
| id | doaj.art-c283836cbbee498e8ce4ce49e2b8b125 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T00:14:22Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-c283836cbbee498e8ce4ce49e2b8b1252023-11-23T15:54:31ZengMDPI AGBuildings2075-53092022-06-0112686010.3390/buildings12060860Study of the Convective Heat Transfer Coefficient of Different Building Envelope Exterior SurfacesXiaotong Xue0Shouxu Han1Dongjun Guo2Ziwei Zhao3Bin Zhou4Fei Li5College of Urban Construction, Nanjing Tech University, Nanjing 211816, ChinaCollege of Urban Construction, Nanjing Tech University, Nanjing 211816, ChinaResearch Center for Underground Space, Army Engineering University of PLA, Nanjing 210007, ChinaResearch Center for Underground Space, Army Engineering University of PLA, Nanjing 210007, ChinaCollege of Urban Construction, Nanjing Tech University, Nanjing 211816, ChinaCollege of Urban Construction, Nanjing Tech University, Nanjing 211816, ChinaConvective heat transfer on the exterior surface of the building envelope is an important component for building energy consumption. The calculation of energy consumption depends on the convective heat transfer coefficient (CHTC) of the exterior surface of the envelope. The existing research does not fully consider the effects of the airflow field around the building on the CHTC of different envelope exterior surfaces. In this paper, the relationships between the CHTC and influence factors were investigated for the isolated building. Response surface methodology (RSM) and support vector machine (SVM) algorithms were integrated with the single building simulation to build the fitting formulas. Then, the fitting correlation between CHTC and different influencing factors was validated by the heating building simulation. The results showed that the CHTC of the building exterior surface was related to the wind velocity, wind direction and temperature difference. Additionally, the fitting formulas had good accuracy in calculating the CHTC under different conditions. The SVM algorithm (averaged error: 3.34%) performed slightly better than the RSM algorithm (averaged error: 4.84%).https://www.mdpi.com/2075-5309/12/6/860energy consumptionCFDfitting correlationSVMwind environment simulation |
| spellingShingle | Xiaotong Xue Shouxu Han Dongjun Guo Ziwei Zhao Bin Zhou Fei Li Study of the Convective Heat Transfer Coefficient of Different Building Envelope Exterior Surfaces Buildings energy consumption CFD fitting correlation SVM wind environment simulation |
| title | Study of the Convective Heat Transfer Coefficient of Different Building Envelope Exterior Surfaces |
| title_full | Study of the Convective Heat Transfer Coefficient of Different Building Envelope Exterior Surfaces |
| title_fullStr | Study of the Convective Heat Transfer Coefficient of Different Building Envelope Exterior Surfaces |
| title_full_unstemmed | Study of the Convective Heat Transfer Coefficient of Different Building Envelope Exterior Surfaces |
| title_short | Study of the Convective Heat Transfer Coefficient of Different Building Envelope Exterior Surfaces |
| title_sort | study of the convective heat transfer coefficient of different building envelope exterior surfaces |
| topic | energy consumption CFD fitting correlation SVM wind environment simulation |
| url | https://www.mdpi.com/2075-5309/12/6/860 |
| work_keys_str_mv | AT xiaotongxue studyoftheconvectiveheattransfercoefficientofdifferentbuildingenvelopeexteriorsurfaces AT shouxuhan studyoftheconvectiveheattransfercoefficientofdifferentbuildingenvelopeexteriorsurfaces AT dongjunguo studyoftheconvectiveheattransfercoefficientofdifferentbuildingenvelopeexteriorsurfaces AT ziweizhao studyoftheconvectiveheattransfercoefficientofdifferentbuildingenvelopeexteriorsurfaces AT binzhou studyoftheconvectiveheattransfercoefficientofdifferentbuildingenvelopeexteriorsurfaces AT feili studyoftheconvectiveheattransfercoefficientofdifferentbuildingenvelopeexteriorsurfaces |