The applicability of low-energy ventilation strategies in healthcare buildings in Turkey
Başlık çevirisi mevcut değil.
- Tez No: 403095
- Danışmanlar: DR. NICK MCCULLEN
- Tez Türü: Yüksek Lisans
- Konular: Mimarlık, Mühendislik Bilimleri, Çevre Mühendisliği, Architecture, Engineering Sciences, Environmental Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2015
- Dil: İngilizce
- Üniversite: University of Bath
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 150
Özet
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Özet (Çeviri)
Energy is of crucial importance, it being the basic need for maintaining our current quality of life, and its demand is rapidly growing. The continuous nature of occupancy in hospitals and the high-tech special equipment have resulted in high-energy-consumption-led CO2 emission rates to be highly increased in hospital buildings. In hospitals, 40% of total electricity is consumed for conditioning the spaces using HVAC systems (DH, 2007). Furthermore, in modern hospitals, more than 30% of the total site energy consumption is from ventilation (Carbon Trust, 2010). Therefore, energy saving potential of the natural ventilation strategies in hospital wards has led this study to focus on these energy intensive hospital buildings. The aim of this research is to examine and evaluate the potential of natural ventilation strategies for single-patient rooms and their impacts on the overall wellbeing of occupants using the IES-VE software for thermal comfort, indoor air quality and energy performance for selected ventilation strategies; same side dual openings and stack and lower inlet ventilation. This study particularly intends to determine and evaluate airflow and energy performance of natural ventilation openings with respect to their different configurations of openable area (100%, 75%, 50% and 25%) and locations (south and north). In winter, spring and autumn, the stack and lower inlet ventilation strategy provides a higher ventilation rate than single-side dual openings ventilation strategy with smaller opening fractions (25%). However, although these two ventilation strategies were designed with the same opening fraction, energy consumption of stack and lower inlet ventilation strategy was found significantly more (around 3 times) than the single side dual-openings. Moreover, in summer all cases were designed with 100% opening fraction to prevent the risk of overheating. In summer, at north, similar ventilation rates were obtained from the single side dual-openings and stack and lower inlet ventilation strategies. However, at south, stack and lower inlet ventilation strategy provides a (349.37 l/s) three-times-higher ventilation rate than the single side dual-openings ventilation strategy (99.40 l/s). Ventilation rate of all cases should meet the requirements of HTM 03-01 and WHO guidelines. However, in winter significant heating-sensible loads were found to be a drawback at all naturally ventilated patient wards that were investigated in this study. In addition, further investigation in this research shows that lower energy consumption than the mechanical ventilation can be achieved using natural ventilation; however, the flowrates would be slightly below the requirement.
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