Master of architecture thesis - Architectural Association, 2006-2007

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Master of architecture thesis - Architectural Association, 2006-2007

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Master of architecture thesis - Architectural Association, 2006-2007

  1. 1. Farah naz
  2. 2. Energy efficient garment factories in Bangladesh.Masters Thesis: Sept 2006 - Feb 2008 Masters in Architecture in Sustainable Environmental Design Architectural Association School of Architecture London, United Kingdom. 3
  3. 3. Energy Efficient garment factories in Bangladesh. Objective: To assess the current working condition of garment factory and identify how this building typology is becoming a health risk for the garment factory workers. Goal is to Propose intelligent passive design strategies that can reduce extensive artificial lighting dependency and secondly, to identify simple non high tech approach to create suitable work environment for future factories in Dhaka, Bangladesh. Abstract: Hand Sketch, Dhakas Skyline showing the existing factories in the urban skyline. Context: Bangladesh - is the twelve largest apparel exporter in the world and fifth largest in EU, with an annual retribution of 9.52 billion US$. With 8000 factories in the country, garment industry is the economic lifeline of the country, employing 30% of the total 8 KM population. Issues: Interestingly this industry is often criticized, for being the largest consumer of electrical energy, where the country faces an imminent shortage; and secondly, for being the leading health risk from overheated working conditions. The rigid requirements for the reduction of lighting demand and the temperature hazard of the working spaces requires a framework of Location Map target conditions to be achieved. After a field work survey and research on potential options, the dissertation focuses on proposing intelligent natural day lighting strategies, that can be adapted to conserve energy and reduce the energy demand of garment factories. Finally, suggest passive cooling through natural ventilation and using hollow core slabs, to attain optimum working condition. The solutions derived are simple and within the framework of the existing cultural context and can be easily adopted, without requiring any high tech systems. The solution holds the potential to add a valuable contribution to this architectural typology in Bangladesh and can become guidelines for future building construction.Field work, internal temperature reading of the sewing Field work: Comfort sensation survey overlayed on the loggedand ironing space. internal temperature. 4
  4. 4. Design Evolution: Conceptual Analysis: Double roof and storage space Vertical circulation Roof Garden Social Block Ironing Space Sewing South block Sewing West block Roof Garden Loading Dock Administrative Block Entrance for the Spatial organization for the functional and social spaces. employee Vertical massing and spatial characteristics study.Right: North Facade. Hand sketch with pen and pencil. Sewing West Design Performace Criteria Identification. 5
  5. 5. Day Lighting Performance: Goal: To obtain the target illumination level between 800 -2000 lux for sewing space and 300- 500 lux for ironing space. Roof Storage Architectural Parameters: South sewing Required Lighting Needed: 800- 2000 lux (Sewing) 300- 500(ironing) West sewing FloorArea: 10m x 20m = 200 m² Volume = 1000m³ Volume Orientation: North South Roof garden & social space Elevation from Ground Plane: 12m(seiwng) 2.5 (Ironing) Ironing Space Conclusion for Sewing Space South and West: AdministrativeNorth South Section Environmental Performace Criteria Identification. 1. The sewing floor received adequate amount of day lighting between 1050-2000 lux in June, which is the month with the peak working load. South sewing wing with a DF 4%, received 800 lux above 800 hours, and 1084 lux above 1100 hours.The artificial lights can be turned off during 52% of the working hours with an average daylight factor of 5.5. Top: South Sewing -June 21, 12pm Bottom: Ironing Space- Jan 12th, 12pm 2. From frequency occurrence analysis of the targeted lux level shows that 2250 working hours above 800 lux, and 1600 hours above 1200 lux is achieved on the sewing floors (south and west) throughout the working hours of an year. Both sewing wing(south and west) are well illuminated with an average DF of 5% . Ironing Space: From the test results it was found that, with a 2.2. DF and an illumination level between 100- 300 lux, 55% working hours the artificial lightings can be turned off. This adds to energy savings above 50% of the working hours. 6
  6. 6. Thermal Performance: Goal: 1. To identify the appropriate ventilation rate required for necessary heat dissipation. 2. Identify what materials and construction method can be utilized for this building typology, without adding any extra cost or high technology, to stabilize the internal resultantLeft to right: Hollow Core, Sandlime brick with plaster, and concrete block with plaster. temperature within the comfort temperatures defined.Sewing Space: Thermal Performance was tested by using TAS. Results: From the thermal performnace analysis it can be concluded, that materiality places an important role in achieving comfort temperatures during the hottest months in summer when the internal temperatures were recored as high as 36ºC, from fieldwork. Comparative Analysis: A comparative analysis of the internal resultant temperature for ironing and sewing spaces, for the three variants traditional Internal Temperature comparison of the three design options. Internal Temperature frequency of occurence of the three design construction the lime brick, conventional construction concrete Ironing Space: plaster, and potential material - hollow core, for the entire year was compared. The following was observed: In the sewing space, between 25º- 30ºC hollow core shows frequency of occurrence of more than 3000 hours, 10% more working hours, than lime brick. Between the temperatures of 32º- 34ºC, hollowcore 83% less hours of occurence than the conventional material. Same is observed in the ironing space, between 25º- 30ºC , hollow core performs 24% more working hours than the limebrick. During the extreme summer days, hollow core Internal Temperature comparison of the three design options. Internal Temperature frequency of occurence of the three design shows, 82% higher performance between the temperatures of 30º- 32ºC, . And above 34ºC the hollow core has 0 hours of frequency of occurrences. 7
  7. 7. Portfolio of Farah Naz

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