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Cooling energy simulation and analysis of an intermittent ventilation strategy under different climates
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för bygg- energi- och miljöteknik, Energisystem. (Energy Systems)ORCID-id: 0000-0002-2171-3013
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för bygg- energi- och miljöteknik, Energisystem. (Energy Systems)
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för bygg- energi- och miljöteknik, Energisystem. (Energy systems)
Department of Applied Physics and Electronics, Umeå University, Umeå, Sweden.
2018 (engelsk)Inngår i: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 156, s. 84-94Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Energy use on heating, ventilation and air conditioning (HVAC) accounts for about 50% of building energy use. To have a sustainable built environment, energy efficient ventilation systems that deliver good indoor environmental quality are needed. This study evaluates the cooling energy saving potential of a newly proposed ventilation system called Intermittent Air Jet Strategy (IAJS) and compares its performance against a mixing ventilation (MV) system in a classroom located in three cities with different climates, Singapore with ‘hot and humid’, Ahvaz with ‘hot and dry’ and Lisbon with “moderate” climate. The results show a significant reduction of cooling energy need and flexibility in control strategies with IAJS as a primary system in hot and humid climates like Singapore. Hot and dry climate with short cool periods like Ahvaz show possible application and considerable energy savings with IAJS as a primary system under optimized variable setpoints, but moderate climates have an increased risk of occupant discomfort likely due to increased draft especially during the cool season.  Thus, IAJS as a secondary system that operates only during cooling season may be conducive for moderate climates like Lisbon. Additionally, the results show that supply fan energy savings can also be realized if well implemented. 

sted, utgiver, år, opplag, sider
2018. Vol. 156, s. 84-94
Emneord [en]
Intermittent air jets; IDA-ICE simulation; Energy savings, Convective cooling, Hot and humid climate, Hot and dry climate, Moderate climate
HSV kategori
Identifikatorer
URN: urn:nbn:se:hig:diva-26564DOI: 10.1016/j.energy.2018.05.093ISI: 000437073600008Scopus ID: 2-s2.0-85048207413OAI: oai:DiVA.org:hig-26564DiVA, id: diva2:1205479
Tilgjengelig fra: 2018-05-14 Laget: 2018-05-14 Sist oppdatert: 2019-11-20bibliografisk kontrollert

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