Green Building A case study of green architecture

Green Building A case study of green architecture By Ng Hoi Hin, Jack (SOC), Lee Wing Yan, Joyce (EEE), Au Sin Man, Sophia (EEE), Cheng Man Fong, Ralph (PSY)

Objective of this presentation Application Insight Data and facts

Presentation flow General principles of green architecture Introduction to the green building design Use of different green techniques Conclusion

General principles of our green architecture Energy Efficiency Waste Reduction Healthy Environment

Introduction to the green building design Daylight Glazing Solar Panel Bamboo Floor (Inside) Air Flow Outlet/Inlet Green Roof Air Flow Outlet/Inlet Geothermal Heat Pump Glass Steel Recycled Materials Green Wall

Green Materials Bamboo Floor (Inside) (http: //mindfulmomma. typepad. com/. a/6 a 00 d 8 341 c 52 f 053 ef 00 e 5534 e 8 4 de 8833 -350 wi) Recycled Materials Steel (http: //keetsa. com/blog/wp-content/uploads/2007/07/bamboo-floors. jpg) (http: //www. issm-iseb. org/b 2 b/pics/ERW_Bright_Steel_Pipe. jpg)

Green Materials: Considerations Quality and durability Minimized quantities Minimized toxic materials Easy for deconstruction (Edwards, 2001) (http: //periodictable. com/Posters/Perspective. 233. JPG, http: //www. trendir. com/archives/alkemi-recycled-countertops-renewed-materials. jpg)

Green Materials: used in our design Recycled materials Bamboo Floor Steel (Hong, 2007) • Concrete • Aggregate • Brick (http: //mindfulmomma. typepad. com/. a/6 a 00 d 8341 c 52 f 053 ef 00 e 5534 e 84 de 8833 -350 wi, http: //keetsa. com/blog/wp-content/uploads/2007/07/bamboo-floors. jpg, http: //www. issm-iseb. org/b 2 b/pics/ERW_Bright_Steel_Pipe. jpg)

Green Materials Bamboo Floor (Inside) (http: //mindfulmomma. typepad. com/. a/6 a 00 d 8 341 c 52 f 053 ef 00 e 5534 e 8 4 de 8833 -350 wi) Recycled Materials Steel (http: //keetsa. com/blog/wp-content/uploads/2007/07/bamboo-floors. jpg) (http: //www. issm-iseb. org/b 2 b/pics/ERW_Bright_Steel_Pipe. jpg)

Green Materials: Recycled Materials Environmentally friendly Save landfill space Reduce the energy used (Hong, 2007) Recycled Materials

Green Materials: Recycled Materials Recycled concrete: wall (Xue, 2008) (http: //www. archsd. gov. hk/Exh. Gallery_View. Page. asp? view. Photo=True&view. Project=wetland 02&Photo. N ame=Project_Exhibition/wetland 02_photo 05. jpg)

Green Materials: Recycled Materials Recycled aggregates: construction works (http: //www. archsd. gov. hk/Exh. Gallery_View. Page. as p? view. Photo=True&view. Project=wetland 02&Photo Name=Project_Exhibition/wetland 02_photo 05. jpg) Recycled brick: wall (Xue, 2008) (http: //www. archsd. gov. hk/E xh. Gallery_View. Page. asp? lang =1&View. Project=wetland 02)

Green Materials: Bamboo Flooring Bamboo Floor (Inside) Easier to replenish (http: //min dfulmomma. typepad. co m/. a/6 a 00 d 8341 c 52 f 05 3 ef 00 e 5534 e 84 de 8833350 wi) Cost: conventional wood floor Attractive building material (Edwards, 2001) (http: //keetsa. com/blog/wp-content/uploads/2007/07/bamboo-floors. jpg)

Green Materials: Steel Maintain strength and integrity “Quality" product after recycling Steel Recycled & Reused (http: //hku. hk/mech/sbe/case_st udy/case/hk/gn/stra_re. htm)

Green Roof (http: //www. arlingtonva. us/News. Releases/gre enroof. jpg)

Green Roof With a packed space in the city……. • utilize thousands of square feet that would otherwise be wasted space (Wilson & Piepkorn, 2006). (http: //www. blogmyair. com/uploaded_images/Green_City-734054. jpg)

Green Roof: Definition A roof of a building that is partially/completely covered with vegetation and soil (Wong, 2006). (http: //www. newgenerationcorp. com/images/green_roof_diagram. jpg)

Green Roof: Background Info. Germany : 1960 s Urban temperatures reduced 10 °C (Yudelson, 2008) (http: //www. newgenerationcorp. com/images/green_roof_diagram. jpg)

Green Roof: Advantages Energy Efficiency • Winter: insulation • Summer: reduce heat (Wong, 2006) (http: //blogs. trb. com/news/specials/newsillustrated/blog/Green. Roof. jpg)

Green Roof: Advantages Waste Reduction • Roofing materials’ life • Filter air and rainwater (Wilson & Piepkorn, 2006) (http: //www. naturalbalancedevelopment. com/images/msl/6. gif)

Green Roof: Advantages Healthy Environment • Vs. sound transmission • Vs. storm-water runoff • Vs. urban heat island effect • wildlife habitat (Wong, 2006) (http: //www. inhabitat. com/images/nyc_copy. jpg, http: //www. ecofinroofgarden. co. uk/page 3/files/blocks_image_5_1. png)

Green Roof: Different Types Type Extensive Intensive Soil Layer 25 -100 mm thick > 100 mm thick Plants Low-growing, stress-tolerant Large variety (Wilson & Piepkorn, 2006). (http: //greeningthecity. files. wordpress. com/2008/07/01 -xeroflojapan 1. jpg, https: //www. clpgroup. com/Soc. NEnv/gogreen/skywoodland/roof/Pages/Intensive. aspx, http: //media. photobucket. com/image/%252522 intensive%20 green%20 roof%252522/landscapedesignchina/2006361115850. jpg)

Green Roof: Different Types Type Extensive Intensive Maintenance Minimum Frequent Usage Cover, Recreational facilities Cover Reduce heat Less effective More gain effective (Yudelson, 2008) (http: //www. building. co. uk/Pictures/web/g/x/a/greenroof_wood_str. jpg, https: //www. clpgroup. com/Soc. NEnv/gogreen/skywoodland/roof/Pages/Intensive. aspx)

Green Roof: Considerations Roof Height and Angle Wind Exposure Climate Microclimate on roof Appearance (Wilson & Piepkorn, 2006) (http: //extension. umd. edu/environment/water/files/ventstackdiagram. gif, http: //www. skyringarchitects. com. au/Skyring%20 Architects_Climate%20 Design%20 Diagram. jpg)

Solar System Solar Panel (http: //www. leon 2008. de/wpcontent/uploads/2008/01/solar-panel-mittelnah. jpg, http: //www. reihk. com/shop/images/180. JPG)

Can We Combine Solar Panels with a Green Solar Heating: Process Roof? Energy center Solar panels • Solar energy Total energy • Heat storage fluid • Ground storage: 80 °C • Heating • Space heating: 60% • Water heating 20% (Edwards, 2001) (http: //www. iea-shc. org/countries/reports/images/drake%20 landing. JPG, (http: //www. trendbird. co. kr/attach/1/1213684158. jpg)

Can We Combine Solar Panels with a Green Solar Heating: Advantages Roof? Solar Community Closely Located • 90% heating + hot water • single home heat lost • Walkable neighborhood • Length: heat fluid (Hong, 2007) (http: //media. canada. com/b 17 a 5268 -e 809 -4 db 2 -a 84 b-06 fc 4 c 00 d 03 e/m 1 x 00022_okotokssolar 2. jpg, http: //www. blisstree. com/files/71/2008/03/dlsc_show-homes-2. jpg)

Can We Combine Solar Panels with a Green Roof? There is no clash between solar and green roof technology! (http: //www. mynewplace. com/blog/wp-content/uploads/2008/03/green_roof. jpg, http: //bettercities. squarespace. com/storage/green%20 roof. jpg, http: //www. designbuildnetwork. com/contractor_images/rheinzink 2/4 -solar-roof-panels. jpg, http: //www. inhabitat. com/wp-content/uploads/solar-panels-1. jpg)

Can We Combine Solar Panels with a Green Solar Panels + Green Roof: Set-up Roof? flat or gently -pitched solar panels on supports southerly facing roof “in the garden” (Edwards, 2001) (http: //graphics 8. nytimes. com/images/2009/03/27/opinion/27 green. 480. jpg, http: //swamplot. com/wp-content/uploads/2009/02/space-green-roof. jpg)

Solar Panels + Green Roof: Benefits Benefit 1 cools temperatures cooler and function better solar system efficiency Benefit 2 Conserve energy Heating /cooling workload for solar system (Hong, 2007) (http: //truthful-living. com/images/solar%20 panel%20 and%20 green%20 roof. jpg, http: //www. igra-world. com/images/Solar-Green-Roof-1. jpg, http: //www. totalsolarenergy. co. uk/solar-panel. html)

Geothermal System Geothermal Heat Pump (http: //www. singletonheatandair. com/images/diagram 2. gif)

Geothermal System: Heat Pump Cooling Evaporation: liquid refrigerant Heating Condensed: liquid refrigerant Absorb heat Release heat Condensed outdoor Evaporates outdoor (Edwards, (http: //www. jeff-helms. com/images/heat-pump-heating-ani. gif, greenbuildingelements. com/2008/07/25/are-geothermal-heat-pumps-for-you/) 2001)

Geothermal System: Geothermal Heat Pump Renewable heat (earth) heating / cooling Efficient Expensive? Payback: five years (Hong, 2007) 3 -6 x energy power equipment (http: //www. engineer. gvsu. edu/house/images/additional/heatpump. jpg)

Natural Ventilation Air Flow Outlet/Inlet (farm 1. static. flickr. com/) Air Flow Outlet/Inlet (http: //planetgreen. discovery. com/? sort. By=Bestsellers&current. Page=6 )

Natural Ventilation: Definition The process of supplying and removing air through an indoor space by natural means, meaning without the use of any mechanical system (Wong, 2006). (http: //www. nps. gov/dsc/images_workeg/zion_b. jpg)

Natural Ventilation: Idea It’s all about natural forces balancing! (http: //revelle. net/lakeside. new. photos/stackventilation. jpg)

Natural Ventilation: Advantages Energy Use • free cooling without use of mechanical systems Health Considerati on • provide outdoor air health & comforts • building construction Cost cost Cost Reducng Reducing • operation cost (Wong, 2006) (http: //www. melbourne. vic. gov. au/rsrc/PDFs/CH 2/airflow. jpg, http: //www. gothicarchgreenhouses. com/polytex_natvent 3. jpg)

Natural Ventilation: Different Types Type Cause Wind driven ventilation Natural forces of wind Stack ventilation Differences in temperature and humidity (Yudelson, 2008) (http: //www. nps. gov/dsc/images_workeg/zion_b. jpg)

Can We Combine Solar Panels with a Green Wind Driven Ventilation: Process Roof? Natural wind • Direct positive pressure Sucking effect • Negative pressure (http: //gbtech. emsd. gov. hk/english/utilize/images/image 002. jpg) Balance • Relieve pressures

Can We Combine Solar Panels with a Green Stack Ventilation: Process Roof? Temper ature differen ce High outlet • Try to make a balance • Warm air Low inlet • Sucking effect of cooler air (http: //gbtech. emsd. gov. hk/english/utilize/images/image 004. jpg, http: //www. dyerenvironmental. co. uk/day_ventilation. gif)

Can We Combine Solar Panels with a Green Natural Ventilation : Practical Set-up Roof? Building form: high but not deep Directed walls + openings Low inlets + high outlets No obstruction Adjustable openings Supplementary mechanical system (http: //images. businessweek. com/ss/06/12/1201_genzyme/image/slide 4. jpg)

Daylight Utilization Daylight Glazing (www. shahpolymer. com/sheets-panels. html, www. agtbuilders. com, betterbricks. com)

Daylight Utilization: Definition Daylight Utilization = Adoption + Obstruction (http: //www. richardrogers. co. uk/Asp/uploaded. Files/Image/News/4000_0095_news_w. jpg)

Daylight Utilization: Advantages Reduce electrical lightings Reduce cooling gains Save energy Visual comfort (http: //www. hku. hk/mech/sbe/case_study/case/ner/IBN-DLO/PHoto/Untitled-9_s. jpg)

Daylight Utilization: Idea Adoption • Daylight glazing: close to ceiling • Vision glazing: higher visible transmittance glazing Obstruction • Light shelves: interior & exterior (Wong, 2006) (http: //gbtech. emsd. gov. hk/english/minimize/images/image 001. jpg)

Daylight Utilization: Types Windows Cost Reducng Light tubes Light shelves Skylight (http: //hpb. buildinggreen. com/cgi-bin/projectscale. cgi? max=350&src=/project_425/6 -photo. jpg, http: //www. reuk. co. uk/Light-Tubes-for-Interior-Lighting. htm, http: //www. window-techs. com/pcat-gifs/productssmall/natural-ventilation. jpg, http: //www. e-architect. co. uk/hong_kong/jpgs/shenzhen_museum_contemporary_art_12. jpg)

Conclusion: Our Design Principles of our Energy green building efficiency Materials Yes Waste reduction Yes Healthy environment Green Roof Yes Yes Solar System Yes Geothermal System Yes Natural Ventilation Yes Daylight Utilization Yes

References • Edwards, B. (2001). Green architecture. London : Wiley-Academy. • Hong, W. (2007). Building energy efficiency : why green building are key to Asia's future. Hong Kong : Asia Business Council. • • • Kwok, A. G. , & Grondzik, W. T. (2007). The green studio handbook : environmental strategies for schematic design. Oxford : Architectural. Xue, L. (2008). Zi ran cai jian. Hong Kong : Hong Kong Wetland Park, Agriculture, Fisheries and Conservation Department, Chinese Arts Papercutting Association. Wilson, A. , & Piepkorn, M. (2006). Green building products : the Green. Spec guide to residential building materials. Gabriola Island, B. C. : New Society Publishers : Building. Green. Wong, K. S. (2006). Green Building Award 2006. Hong Kong : Professional Green Building Council. Yudelson, J. (2008). Marketing green building services : strategies for success. Oxford ; Burlington, MA: Architectural Press.

Reference • Air Asia – www. airasia. com