MASON HNRS 228 - High Energy Efficient Design

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Continuing Chapter 7 High Energy Efficient DesignOverview of Chapter 7Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Slide 24Slide 25Slide 26Slide 27The ‘Economics’ screen will Calculate the Payback of Each SchemeSlide 29Slide 30Slide 31Slide 32Slide 33Slide 34Slide 35Slide 36Slide 37Slide 38Slide 39Slide 40Slide 41Slide 42Slide 43Slide 44Slide 45Slide 46Slide 47Slide 48Slide 49Slide 50Slide 51Slide 52Slide 53Slide 54Slide 55Slide 56Slide 57Slide 58Slide 59Slide 601Continuing Chapter 7High Energy Efficient DesignLecture #15HNRS 228Energy and the EnvironmentAdapted from Murray Milne LectureUCLA and HEED office2Overview of Chapter 7•Energy Conservation–Space Heating–Thermal Insulation–Air Infiltration–Lighting–Appliances–Some considerations of agriculture and industry3Designing High Performance Sustainable BuildingsMy Objectives are:1. To show you how to use HEED to design a Basic Residential Building2. To show you how HEED reports Site Energy Use and CO2 Production with each design change you make.3. To show you six concepts of Energy Efficient Buildingsusing HEED’s Advanced Graphic Evaluation tools4. To give EACH of you a chance to use HEED on your own.5. To end by showing how well each of your designs compare.4What is the 2010 ImperativeEd Mazria, the AIA, the USGBC and others have jointly issued the 2030 Challenge, that asks architects to create buildings that are carbon-neutral by 2030. As a first step they also ask that the fossil fuel reduction of all new buildings be reduced by 50% between now and 2010. This target is readily achievable, but to do it Mazria says we need a little “performance box” in our design tools to show how close each design change gets us toward that goal.HEED now has such a little “performance box”.5When you install the HEED disk on your laptop it will automatically begin loading...6Next it will show you the TutorialWhenever you are in doubt about what to do next…Click ”next” to continue7891011To define any term on your current screen Click on HELP12Using HEED to Design a Basic Residential Building1. Start in the ‘Initial Design’ screen by giving Four Facts about your home: • Building Type• Square Footage• Number of Stories• Zipcode or Location.2. Using this data, HEED will automatically design two basecase buildings: Scheme 1 that meets the Energy Code Scheme 2 that is more Energy Efficient. 3. It will COPY Scheme 2 and ask you to revise it to create your own design. 4. Every few minutes COPY your Scheme and keep on improving your design. 5. Try to make its Energy Costs less than the basecase designs.13 On Initial Design Screen, Answer These Questionsthen click Next14 From this, HEED Automatically Creates Two Buildings15Scheme 1:CODE MINIMUM DESIGN•Square floor plan•Equal area of glass on each wall•Windows tinted as required by code•No window shading•Stud and Stucco walls•Raised wood floor•Code required air change infiltration•Lights are mostly incandescentScheme 2:ENERGY EFFICIENT DESIGN•Rectangular floor plan facing South•Most glass on South, min. on E &W•Often clear glass on South and North•Overhangs shading South Windows•High mass walls, exterior insulation•Slab on grade floor, carpet or tile•Whole-house Fan, 10 air changes/hr•Lights are mostly fluorescent Both Schemes have the same: Floor area, Window area, Climate, Occupancy Schedules16 Then it asks you to Copy and Re-Name Scheme 2Click Next17 Now begin changing your new Scheme 3 to your own design18 Click on the ‘Basic’ icon to see Basic Design Options19 Draw in your own Floorplan by Filling-the-Squares20Click and Rotate your House to its correct Orientation21 Drag and Drop Windows/Doors to Exact Location22Checklists let you Describe your Home’s Construction23There are over a dozen BASIC Checklists to choose from24 Finally, the Energy Cost bar charts show how each of your Schemes Compare with Schemes 1 and 225This same Bar Chart can be plotted in terms of Site Energy or CO2 Production, in Pounds or in Pounds per Square foot26Almost everything you touch in HEED either gives you more data or moves to show more information27 The ‘Energy Efficient Design’ screen shows the number of hours the building runs Passively (green) and also give the top ten Design Guidelines for this climate28The ‘Economics’ screen will Calculate the Payback of Each Scheme29These were the kinds of thing you can These were the kinds of thing you can do using only the do using only the BASIC DesignBASIC Design options...options...30These were the kinds of thing you can These were the kinds of thing you can do using only the do using only the BASIC DesignBASIC Design options...options... at any point you can switch to HEED’s at any point you can switch to HEED’s ADVANCED Design Data InputADVANCED Design Data Input Options Optionsor HEED’s or HEED’s Advanced EVALUATIONAdvanced EVALUATION Graphic OutputGraphic Output options... options...……..…… but………..….31There are more a dozen different Advanced Design Data Input Options32and over three dozen different Advanced Evaluation Graphic Output options333D Graphic Plots can show the comparison of any pair of components within a Scheme34… or click on the menu and ‘Capture a Snapshot’ to compare with any component in any other Scheme35… here for Scheme 9 the Air Conditioner has been ‘Captured’ and is compared to the Outdoor Temperature36The Hourly Bar Chart shows which components need your design attention and which do not37The BEPS screen shows quantitative data for various measures of Building Energy Performance38Fuel and Electric Charges are available for 5 California Utilities, or you can input your own utility rates39This Comparison screen shows how Site Energy and CO2 Production compare for all nine schemes…40Click ‘Next’ and it will give Site Energy in kBTU/sq.ft. and CO2 Production in Lbs/sq.ft. for all nine schemes41This is the data you need for the 2010 Challenge This example shows that compared to the Scheme 1 Basecase, Scheme 9 uses only 58.13% of the Site Energy and produced only 54.14% of the CO2… (so it is almost there)42PLEASE every few minutes click on PLEASE every few minutes click on LibraryLibrary......……and make a copy of your current and make a copy of your current scheme in order to create a


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