Energy related performance of manual shading devices in private offices: An occupant behavior-based comparative study using modeling approaches
This paper aims to answer whether and to what extent energy standard based shade assumptions over predict energy and economic performance for the hot summer and cold winter zone of China using modeling approaches. Occupant behaviors on shade action, occupancy and related lighting, office equipment a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-10-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X21004998 |
| _version_ | 1819019019942887424 |
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| author | GaoXiang Chen Jian Yao RongYue Zheng |
| author_facet | GaoXiang Chen Jian Yao RongYue Zheng |
| author_sort | GaoXiang Chen |
| collection | DOAJ |
| description | This paper aims to answer whether and to what extent energy standard based shade assumptions over predict energy and economic performance for the hot summer and cold winter zone of China using modeling approaches. Occupant behaviors on shade action, occupancy and related lighting, office equipment and heating/cooling operation were considered and the energy and economic performances of manual shades were compared with standard assumption. Results show that annual energy uncertainty is significant, indicating a high uncertainty of energy performance. Standard assumption about occupant behavior adopted by building energy codes leads to an over prediction of energy saving by about 3 times compared with behavioral models. An interesting finding is that using manual shades may result in an energy increase (the probability is 7.26%) rather than energy saving. Meanwhile, net present value analysis shows that there is a significant overestimation of economic performance by shade behavior model alone as compared to occupancy plus shade models, and may lead to a biased economic prediction or even an inappropriate design decision on manual shades. A proposed shade behavior improvement strategy shows that it not only has a more robust shading performance but also a lower energy demand. |
| first_indexed | 2024-12-21T03:28:40Z |
| format | Article |
| id | doaj.art-dc2839f5fd4348ffb39129969f6a2010 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-12-21T03:28:40Z |
| publishDate | 2021-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-dc2839f5fd4348ffb39129969f6a20102022-12-21T19:17:32ZengElsevierCase Studies in Thermal Engineering2214-157X2021-10-0127101336Energy related performance of manual shading devices in private offices: An occupant behavior-based comparative study using modeling approachesGaoXiang Chen0Jian Yao1RongYue Zheng2Department of Architecture, Ningbo University, Ningbo, China; Department of Architecture and Built Environment, University of Nottingham Ningbo China, University Park, Ningbo, ChinaDepartment of Architecture, Ningbo University, Ningbo, China; Corresponding author.Department of Civil Engineering, Ningbo University, Ningbo, China; Corresponding author.This paper aims to answer whether and to what extent energy standard based shade assumptions over predict energy and economic performance for the hot summer and cold winter zone of China using modeling approaches. Occupant behaviors on shade action, occupancy and related lighting, office equipment and heating/cooling operation were considered and the energy and economic performances of manual shades were compared with standard assumption. Results show that annual energy uncertainty is significant, indicating a high uncertainty of energy performance. Standard assumption about occupant behavior adopted by building energy codes leads to an over prediction of energy saving by about 3 times compared with behavioral models. An interesting finding is that using manual shades may result in an energy increase (the probability is 7.26%) rather than energy saving. Meanwhile, net present value analysis shows that there is a significant overestimation of economic performance by shade behavior model alone as compared to occupancy plus shade models, and may lead to a biased economic prediction or even an inappropriate design decision on manual shades. A proposed shade behavior improvement strategy shows that it not only has a more robust shading performance but also a lower energy demand.http://www.sciencedirect.com/science/article/pii/S2214157X21004998Building energyOccupant behaviorManual shadesEconomic performanceUncertainty |
| spellingShingle | GaoXiang Chen Jian Yao RongYue Zheng Energy related performance of manual shading devices in private offices: An occupant behavior-based comparative study using modeling approaches Case Studies in Thermal Engineering Building energy Occupant behavior Manual shades Economic performance Uncertainty |
| title | Energy related performance of manual shading devices in private offices: An occupant behavior-based comparative study using modeling approaches |
| title_full | Energy related performance of manual shading devices in private offices: An occupant behavior-based comparative study using modeling approaches |
| title_fullStr | Energy related performance of manual shading devices in private offices: An occupant behavior-based comparative study using modeling approaches |
| title_full_unstemmed | Energy related performance of manual shading devices in private offices: An occupant behavior-based comparative study using modeling approaches |
| title_short | Energy related performance of manual shading devices in private offices: An occupant behavior-based comparative study using modeling approaches |
| title_sort | energy related performance of manual shading devices in private offices an occupant behavior based comparative study using modeling approaches |
| topic | Building energy Occupant behavior Manual shades Economic performance Uncertainty |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X21004998 |
| work_keys_str_mv | AT gaoxiangchen energyrelatedperformanceofmanualshadingdevicesinprivateofficesanoccupantbehaviorbasedcomparativestudyusingmodelingapproaches AT jianyao energyrelatedperformanceofmanualshadingdevicesinprivateofficesanoccupantbehaviorbasedcomparativestudyusingmodelingapproaches AT rongyuezheng energyrelatedperformanceofmanualshadingdevicesinprivateofficesanoccupantbehaviorbasedcomparativestudyusingmodelingapproaches |