Climate change shifts the trade-off between lower cooling and higher heating demand from daylight saving time in office buildings
The original intention of daylight saving time (DST) was to save energy required for artificial lighting. This one-hour shift in working hours, however, also impacts the current and future heating and cooling demand of buildings, which is yet to be thoroughly investigated. Here, daylight saving time...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/acb0e3 |
| _version_ | 1797747265833533440 |
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| author | Sven Eggimann Robin Mutschler Kristina Orehounig Massimo Fiorentini |
| author_facet | Sven Eggimann Robin Mutschler Kristina Orehounig Massimo Fiorentini |
| author_sort | Sven Eggimann |
| collection | DOAJ |
| description | The original intention of daylight saving time (DST) was to save energy required for artificial lighting. This one-hour shift in working hours, however, also impacts the current and future heating and cooling demand of buildings, which is yet to be thoroughly investigated. Here, daylight saving time-induced heating and cooling demand of archetype offices across the United States are simulated for 15 cities for different representative concentration pathway (RCP) climate trajectories. DST reduces cooling more than it increases heating. Maximum savings of up to 5.9% for cooling and 4.4% increase in heating were simulated under current climatic conditions, noting that cooling dominates the buildings’ demand during the DST period. Climate change increases future cooling demand, but does not significantly affect the combined (heating and cooling) potential of reducing energy demand when DST is introduced. However, the relative reduction (i.e. decrease in the percentage of total cooling demand) is smaller when considering climate change. The impact of DST on cooling and heating energy demand depends on the geographical location, which determines the amount and temporal pattern of cooling and heating demand. For the considered case studies, introducing DST with climate change generally resulted in overall combined savings with a maximum saving of 3% for Port Angeles, assuming an RCP 4.5 scenario. Policies that shift working hours need to be evaluated considering their impact on building energy demand and it is necessary to establish whether saving cooling or saving heating energy demand can achieve higher CO _2 emission reductions. |
| first_indexed | 2024-03-12T15:48:20Z |
| format | Article |
| id | doaj.art-d8349509e64f42108a71f3baa242ff4a |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T15:48:20Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-d8349509e64f42108a71f3baa242ff4a2023-08-09T15:20:17ZengIOP PublishingEnvironmental Research Letters1748-93262023-01-0118202400110.1088/1748-9326/acb0e3Climate change shifts the trade-off between lower cooling and higher heating demand from daylight saving time in office buildingsSven Eggimann0https://orcid.org/0000-0003-3655-2328Robin Mutschler1https://orcid.org/0000-0001-9633-8054Kristina Orehounig2https://orcid.org/0000-0001-6491-7641Massimo Fiorentini3https://orcid.org/0000-0002-9995-6672Urban Energy Systems Laboratory, Swiss Federal Laboratories for Materials Science and Technology , Dübendorf, SwitzerlandUrban Energy Systems Laboratory, Swiss Federal Laboratories for Materials Science and Technology , Dübendorf, SwitzerlandUrban Energy Systems Laboratory, Swiss Federal Laboratories for Materials Science and Technology , Dübendorf, SwitzerlandDepartment of Civil and Architectural Engineering, Aarhus University , Inge Lehmanns Gade 10, 8000 Aarhus C, DenmarkThe original intention of daylight saving time (DST) was to save energy required for artificial lighting. This one-hour shift in working hours, however, also impacts the current and future heating and cooling demand of buildings, which is yet to be thoroughly investigated. Here, daylight saving time-induced heating and cooling demand of archetype offices across the United States are simulated for 15 cities for different representative concentration pathway (RCP) climate trajectories. DST reduces cooling more than it increases heating. Maximum savings of up to 5.9% for cooling and 4.4% increase in heating were simulated under current climatic conditions, noting that cooling dominates the buildings’ demand during the DST period. Climate change increases future cooling demand, but does not significantly affect the combined (heating and cooling) potential of reducing energy demand when DST is introduced. However, the relative reduction (i.e. decrease in the percentage of total cooling demand) is smaller when considering climate change. The impact of DST on cooling and heating energy demand depends on the geographical location, which determines the amount and temporal pattern of cooling and heating demand. For the considered case studies, introducing DST with climate change generally resulted in overall combined savings with a maximum saving of 3% for Port Angeles, assuming an RCP 4.5 scenario. Policies that shift working hours need to be evaluated considering their impact on building energy demand and it is necessary to establish whether saving cooling or saving heating energy demand can achieve higher CO _2 emission reductions.https://doi.org/10.1088/1748-9326/acb0e3energy demandclimate changeworking hourclimate change adaptationarchetypesummertime |
| spellingShingle | Sven Eggimann Robin Mutschler Kristina Orehounig Massimo Fiorentini Climate change shifts the trade-off between lower cooling and higher heating demand from daylight saving time in office buildings Environmental Research Letters energy demand climate change working hour climate change adaptation archetype summertime |
| title | Climate change shifts the trade-off between lower cooling and higher heating demand from daylight saving time in office buildings |
| title_full | Climate change shifts the trade-off between lower cooling and higher heating demand from daylight saving time in office buildings |
| title_fullStr | Climate change shifts the trade-off between lower cooling and higher heating demand from daylight saving time in office buildings |
| title_full_unstemmed | Climate change shifts the trade-off between lower cooling and higher heating demand from daylight saving time in office buildings |
| title_short | Climate change shifts the trade-off between lower cooling and higher heating demand from daylight saving time in office buildings |
| title_sort | climate change shifts the trade off between lower cooling and higher heating demand from daylight saving time in office buildings |
| topic | energy demand climate change working hour climate change adaptation archetype summertime |
| url | https://doi.org/10.1088/1748-9326/acb0e3 |
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