Thermal and energy performance of an integrated hybrid radiant-convective heating system in office cubicles
Open offices are preferred in office buildings due to cost advantages, space efficiency, and increased productivity. However, different thermal comfort perceptions among employees in such environments often lead to hindering satisfaction and productivity while reducing energy efficiency. Operative t...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25008822 |
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| author | Fatih Evren |
| author_facet | Fatih Evren |
| author_sort | Fatih Evren |
| collection | DOAJ |
| description | Open offices are preferred in office buildings due to cost advantages, space efficiency, and increased productivity. However, different thermal comfort perceptions among employees in such environments often lead to hindering satisfaction and productivity while reducing energy efficiency. Operative temperature, the fundamental comfort temperature for the human body, depends on parameters like radiative and convective components, clothing, and activity levels. This study integrates a hybrid heating system into office cubicles to create individual comfort zones and experimentally investigates energy consumption. The hybrid system, featuring radiative panels with electric film heaters and electric convective components, allows independent control of the operative temperature's radiative and convective elements. Experiments were conducted in a typical office with two cubicles; one is active, and the other is passive. Operative temperature is measured over black globe temperature, air temperature, and airspeed measurements. Vertical air temperatures were measured at four points at three levels within the individual comfort zone. The hybrid system achieved a 1 °C operative temperature increase in the cubicle with a 0.5 kW consumption rate, corresponding to 40 % less energy consumption compared to the central convective system. |
| format | Article |
| id | doaj-art-cfaa2a5a5fa24cf98e4578db33562aa5 |
| institution | DOAJ |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-cfaa2a5a5fa24cf98e4578db33562aa52025-08-20T02:42:42ZengElsevierCase Studies in Thermal Engineering2214-157X2025-09-017310662210.1016/j.csite.2025.106622Thermal and energy performance of an integrated hybrid radiant-convective heating system in office cubiclesFatih Evren0Pacific Northwest National Laboratory, Seattle, WA, USAOpen offices are preferred in office buildings due to cost advantages, space efficiency, and increased productivity. However, different thermal comfort perceptions among employees in such environments often lead to hindering satisfaction and productivity while reducing energy efficiency. Operative temperature, the fundamental comfort temperature for the human body, depends on parameters like radiative and convective components, clothing, and activity levels. This study integrates a hybrid heating system into office cubicles to create individual comfort zones and experimentally investigates energy consumption. The hybrid system, featuring radiative panels with electric film heaters and electric convective components, allows independent control of the operative temperature's radiative and convective elements. Experiments were conducted in a typical office with two cubicles; one is active, and the other is passive. Operative temperature is measured over black globe temperature, air temperature, and airspeed measurements. Vertical air temperatures were measured at four points at three levels within the individual comfort zone. The hybrid system achieved a 1 °C operative temperature increase in the cubicle with a 0.5 kW consumption rate, corresponding to 40 % less energy consumption compared to the central convective system.http://www.sciencedirect.com/science/article/pii/S2214157X25008822Personal comfort systemControlled microenvironmentThermally active office cubicleTask ambient systems |
| spellingShingle | Fatih Evren Thermal and energy performance of an integrated hybrid radiant-convective heating system in office cubicles Case Studies in Thermal Engineering Personal comfort system Controlled microenvironment Thermally active office cubicle Task ambient systems |
| title | Thermal and energy performance of an integrated hybrid radiant-convective heating system in office cubicles |
| title_full | Thermal and energy performance of an integrated hybrid radiant-convective heating system in office cubicles |
| title_fullStr | Thermal and energy performance of an integrated hybrid radiant-convective heating system in office cubicles |
| title_full_unstemmed | Thermal and energy performance of an integrated hybrid radiant-convective heating system in office cubicles |
| title_short | Thermal and energy performance of an integrated hybrid radiant-convective heating system in office cubicles |
| title_sort | thermal and energy performance of an integrated hybrid radiant convective heating system in office cubicles |
| topic | Personal comfort system Controlled microenvironment Thermally active office cubicle Task ambient systems |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25008822 |
| work_keys_str_mv | AT fatihevren thermalandenergyperformanceofanintegratedhybridradiantconvectiveheatingsysteminofficecubicles |