Thursday, March 24, 2011
Congratulations! 2011 CIRT Finalists
Monday, March 21, 2011
Monday, March 14, 2011
2011 CIRT COMPETITION BOARDS
Congratulations everyone! You should all be very proud.
Sunday, March 13, 2011
Heating & Cooling Systems
A combination of proper insulation, energy-efficient windows and doors, day lighting, shading, and ventilation will usually keep homes cool with a low amount of energy use in all but the hottest climates. Although ventilation should be avoided in hot, humid climates, the other approaches can significantly reduce the need to use air conditioning. Whether relying on natural ventilation or forcing air through your home with fans, ventilation is the most energy-efficient way to cool your house. For homes in dry climates, evaporative cooling or "swamp cooling" provides an experience like air conditioning, but with much lower energy use. Absorption coolers use heat rather than electricity as their energy source, and are now available for large homes. Radiant cooling can be appropriate in arid climates, but is problematic elsewhere. Earth cooling tubes have been installed in a few hundred homes, but the technology is not effective.
Heating Systems
Active Solar Heating
There are two basic types of active solar heating systems based on the type of fluid—either liquid or air—that is heated in the solar energy collectors. (The collector is the device in which a fluid is heated by the sun.) Liquid-based systems heat water or an antifreeze solution in a "hydronic" collector, whereas air-based systems heat air in an "air collector."Active solar heating systems are most cost-effective when they are used for most of the year, that is, in cold climates with good solar resources. They are most economical if they are displacing more expensive heating fuels, such as electricity, propane, and oil heat. Some states offer sales tax exemptions, income tax credits or deductions, and property tax exemptions or deductions for solar energy systems.
The cost of an active solar heating system will vary. Commercial systems range from $30 to $80 per square foot of collector area, installed. Usually, the larger the system, the less it costs per unit of collector area. Commercially available collectors come with warranties of 10 years or more, and should easily last decades longer. The economics of an active space heating system improve if it also heats domestic water, because an otherwise idle collector can heat water in the summer.
Heating your home with an active solar energy system can significantly reduce your fuel bills in the winter. A solar heating system will also reduce the amount of air pollution and greenhouse gases that result from your use of fossil fuels such as oil, propane, and natural gas for heating or that may be used to generate the electricity that you use.
Portable Heaters
Less efficient than central heating systems, but can save energy when used appropriately.
Small space heaters are typically used when the main heating system is inadequate or when central heating is too costly to install or operate. In some cases, small space heaters can be less expensive to use if you only want to heat one room or supplement inadequate heating in one room. They can also boost the temperature of rooms used by individuals who are sensitive to cold, especially elderly persons, without overheating your entire home.
Although most space heaters rely on convection (the circulation of air in a room) to heat a room, some rely on radiant heating; that is, they emit infrared radiation that directly heats up objects and people that are within their line of sight. Radiant heaters are a more efficient choice when you will be in a room for only a few hours, if you can remain within the line of sight of the heater. They can be more efficient when using a room for a short period because they avoid the energy needed to heat the entire room by instead directly heating the occupant of the room and the occupant's immediate surroundings.The Parts of Wind Turbines
- Anemometer:
- Measures the wind speed and transmits wind speed data to the controller.
- Blades:
- Most turbines have either two or three blades. Wind blowing over the blades causes the blades to "lift" and rotate.
- Brake:
- A disc brake, which can be applied mechanically, electrically, or hydraulically to stop the rotor in emergencies.
- Controller:
- The controller starts up the machine at wind speeds of about 8 to 16 miles per hour (mph) and shuts off the machine at about 55 mph. Turbines do not operate at wind speeds above about 55 mph because they might be damaged by the high winds.
- Gear box:
- Gears connect the low-speed shaft to the high-speed shaft and increase the rotational speeds from about 30 to 60 rotations per minute (rpm) to about 1000 to 1800 rpm, the rotational speed required by most generators to produce electricity. The gear box is a costly (and heavy) part of the wind turbine and engineers are exploring "direct-drive" generators that operate at lower rotational speeds and don't need gear boxes.
- Generator:
- Usually an off-the-shelf induction generator that produces 60-cycle AC electricity.
- High-speed shaft:
- Drives the generator.
- Low-speed shaft:
- The rotor turns the low-speed shaft at about 30 to 60 rotations per minute.
- Nacelle:
- The nacelle sits atop the tower and contains the gear box, low- and high-speed shafts, generator, controller, and brake. Some nacelles are large enough for a helicopter to land on.
- Pitch:
- Blades are turned, or pitched, out of the wind to control the rotor speed and keep the rotor from turning in winds that are too high or too low to produce electricity.
- Rotor:
- The blades and the hub together are called the rotor.
- Tower:
- Towers are made from tubular steel (shown here), concrete, or steel lattice. Because wind speed increases with height, taller towers enable turbines to capture more energy and generate more electricity.
- Wind direction:
- This is an "upwind" turbine, so-called because it operates facing into the wind. Other turbines are designed to run "downwind," facing away from the wind.
- Wind vane:
- Measures wind direction and communicates with the yaw drive to orient the turbine properly with respect to the wind.
- Yaw drive:
- Upwind turbines face into the wind; the yaw drive is used to keep the rotor facing into the wind as the wind direction changes. Downwind turbines don't require a yaw drive, the wind blows the rotor downwind.
- Yaw motor:
- Powers the yaw drive.
Info for the Boards
Heat Island Reduction: Majority this neighborhood is made up of green spaces such as individual trees & shrubs, parks, gardens, and green roof’s. There are walking/running trials to support exercise within the community. The houses also have solar roof tiles, which take the shape of any roof and are an affective energy source.
On-site Renewable Energy Sources:
Types of Wind Turbines
Modern wind turbines fall into two basic groups: the horizontal-axis variety, as shown in the photo, and the vertical-axis design, like the eggbeater-style Darrieus model, named after its French inventor.
Horizontal-axis wind turbines typically either have two or three blades. These three-bladed wind turbines are operated "upwind," with the blades facing into the wind.
Sizes of Wind Turbines
Utility-scale turbines range in size from 100 kilowatts to as large as several megawatts. Larger turbines are grouped together into wind farms, which provide bulk power to the electrical grid.
Single small turbines, below 100 kilowatts, are used for homes, telecommunications dishes, or water pumping. Small turbines are sometimes used in connection with diesel generators, batteries, and photovoltaic systems. These systems are called hybrid wind systems and are typically used in remote, off-grid locations, where a connection to the utility grid is not available.
Wednesday, March 9, 2011
Final days schedule
Tuesday, March 8, 2011
Self Sustaining Homes
Wind turbine
The helix S322 2.0 KW axis wind generate produces usable power at 11 mph with optimum speed at 15.6 mph. The model units are 10 feet, 10 inches tall with a 4 foot by 8.66 foot rotor dimension. (housing of the Northwest Property). Many horizontal residential models resemble are 3 foot to 10 foot blade span. It takes 8 mph winds to kick an average turbine into gear and about 15 mph to generate electricity. United States wind maps show the strongest guests in the middle states, off coasts and near mountains. An average residential model generates 1 kW to 10kW according to AWEA. A 10 kW unit could completely power an average home in good wind conditions. A 2 kW model provides just supplement power but is a more manageable size. Most residential systems cost $15000 to $20000 installed by turbine dealers.
Solar electric
The 5.4 KW PV system, consisting of 24 sun power SPR-255 BLK solar panels generates an output of 4119 KWh per year. (housing of the Northwest Property)
Green Roof
Vegetated roofs filled with growing medium and a selection of sedums chosen especially for the location and condition. Enables rain water to be harvested to a gallon cistern providing irrigation for the site.
Window Flashing
Vapor flashing, factory formed corners and vapor sill savor are engineered to prevent moisture intrusion around the windows or doors.
Compost filled living wall
Provides an attractive alternative to a concrete or masonry wall, absorbs storm water and produces oxygen
Passive Design Text
Passive Design Text
Our house includes the latest in Passive design which indicates sustainability and self sufficient home that generates the overall idea of “Green Housing”. The house has a lot of features that takes advantage of passive design and looks spectacular at the same time
We have included:
Wind Turbines
- The helix S322 2-kW vertical- axis wind generators provides smooth power and torque delivery across a broad range of wind speeds and withstands difficult physical environments. The generator produces usable power at 11.1 mph with optimum wind speed of 15.6mph. The modular units are scalable; this unit is 10 ft, 10in tall with a 4ft by 8.66 ft rotor dimension.
Solar Electric
- The 5.4 kW PV system, consisting of 24 Sun Power of SPR-225-BLK solar panels, is expected to generate an annual output of 4119 kWh per year. The system also includes a Sun Power SPR-6000m inverter and a Sun Power lifetime monitoring system.
Green Roof
- The 1000 square foot vegetated roof consist of 2ft by 4ft trays filled with growing medium and a selection of sedums chosen especially for the location and condition. Rainwater harvesting uses a 3000 gallon cistern located under the garage for irrigation of the sites and the green roof.
Window Flashing
- VaproFlashing, Factory Formed Corners and a VaproSillSaver are engineered to prevent moisture intrusion around windows and doors. 3D Factory Formed Corners are manufactured using a patented breathable membrane fabric with each corner formed using an ultra sonic welding process; this eliminates weak joints compared to traditional heat welding, which can caused leaking, the flashing is precut for easy installation. VaproSillSavers, the flashings are also 100% recyclable.
SIPs (Structural insulated panels)
- The floor, walls, and roof of the house were built with the features of SIPs. Features expanded polystyrene foam sandwiched between two sheets of oriented strand board (OSB). The R-24 wall panels were custom- made based on the projects house plans, including pre-cut window and door openings and pre-drilled electrical chases. Building with SIPs will save you time, money and labor
Active Design and Sustainability (not completed)
~ Ellen Lei
Active Design and Sustainability
~ Exterior Aspect
Our design is primarily to support the goal of maintaining an active and sustainable lifestyle. In our site, we have a plaza space with a lot of features such as trees, fountain, and bout movable and fixed seating. There are bikeways to minimize cars to promote walking so pedestrians can be safe and can enjoy their surroundings. Buffers are created to separate pedestrians from moving vehicles by using a lot of trees and other sidewalk infrastructures. Trees and landscaping are used for recreation, encouragement of walking and shading.
~ Interior Aspect
To further promote walking, stairs would be made more appealing than an elevator. Suggestions are having nature on indoor gathering areas and having bring, inviting colors that attract use.
Sunday, March 6, 2011
Text for Universal Design
Text for Universal Design
The Universal Design Concept in our Military Retirement Village provides accessibility to both the able bodied and the physically disabled. Our village contains amazing features that a desirable home needs, that will give our veterans a sense of belonging and a place to call home. We want nothing but the best for our heroic veterans so we incorporated the latest in universal deigns.
We have included abundance amount of concepts, such as: Radiant-heated bathroom floors. No longer are water-filled pipes required under your kitchen, bathroom, or bedroom floors, with pre-made mats make installation much simpler and less expensive. On demand water heater. The Rheem Pronto is a good example of an on-demand heater that mounts in the wall and helps you avoid wasting energy for hot water stored in pipes and tanks. Glass tiles in colors, that will let the light in and brighten up your home. Dual flush toilets, that can save 6000 gallons of water per year for a family of 4. Low-flow shower heads which uses just 1 gallon per minute vs.3.5 for standard showerheads. Yet performance feels the same. Water re-circulator, if you don’t upgrade to an on-demand heater, a re-circulator gives you instant hot water, so no more waiting for the hot water to arrive through your cold pipes. Folding patio-door, which lets you easily open up an entire wall(s) to your deck or patio. Central vacuum, so our retirees can stop lugging a heavy vacuum around, just plug the head and hose into convenient wall outlets. Doesn’t cost much more than a deluxe vacuum cleaner if installed in a new home. Excellent insulation for the walls and the ceiling. First floor master bedroom, for obvious reason, why put a 60+ veteran to travel to a bedroom upstairs. Built-in Trash/Recycling stations, it will be a built-in kitchen drawer with multiple compartments for trash and recycling makes your kitchen more attractive and simplifies collection. Solar hot water heating, which is much more efficient and cheaper in most climates than photovoltaic systems. Small wind turbine, it’s a new and quieter systems, can save money if installed properly in a location with good wind potential. Large open shower, a shower that isn’t claustrophobic and its opens or is windowed to a private garden which makes bath time a lot more of a pleasurable. Second sinks in kitchen to make it much easier for many purposes.
We also had an individual checklist for all the room in our homes, which will described the components we put more in depth. In our bedrooms we included; 36-inch-wide doors for easy access or pocket doors, Rocker-style light switches, 42 inches off the floor, Closet with multi-level or pull-down shelving and clothes rod, we avoided bi-fold or accordion closet doors, which can be difficult to open and close, Electrical outlets 18 inches off the floor, for easier access, and extra electrical outlets to accommodate technology or future medical-equipment needs. In our Kitchen we included; 36-inch-wide doors for easy access or pocket doors, multi-height, rounded-edge countertops to enable residents to work standing or seated, color-contrast front edges on countertops to help prevent spills, clear counter space next to sink and all appliances, space for a chair under sink or cook top for seated users, easy-access storage, such as pull-out pantry or adjustable-height shelving, stove-top water access to fill pots, bright, non-glare task lighting over sink, stove, and work areas, anti-scald faucet with lever-style handle, D-shaped or pull-style cabinet and drawer handles, easy-glide drawers that close automatically, drawer-style dishwasher or raised platform under dishwasher to reduce bending, easy-access side-by-side refrigerator/freezer or under-counter, drawer-style refrigerator, front-mounted appliance controls that are highly visible or can be operated by touch, built-in storage space for easy-access and removable recyclables and trash, electrical outlets 18 inches off the floor, extra electrical outlets for small appliances; some outlets located under countertops for easy access, rocker-style light switches, 42 inches off the floor, easily accessible garbage-disposal switch, laundry on main floor, front-loading washer and dryer, stacked or on raised platform to reduce bending, with accessible controls on front, laundry sink and countertop no more than 34 inches above floor with knee space below for seated users, bright task-lighting in laundry, wall-mounted folding table that lies flat when not in use, and very crucial for retirement homes, non-slip flooring. In our den and living room we have included; 36-inch-wide doors for easy access, or pocket doors, level flooring throughout the house, easy-touch, rocker-style light switches 42 inches off the floor, electrical outlets 18 inches off the floor, seating at least 18 inches off the floor, extra electrical outlets to accommodate future technology or medical-equipment needs, rearranged furniture and remove any clutter to allow for clear, wide passageways. In our stairways and halls we have included; handrails on both sides of stairs, interior and exterior, no open, see-through risers on stairs, deep stair treads, to accommodate entire foot, contrasting color at front edge of steps, to provide visual orientation, or non-slip adhesive strips, 4-foot-wide stairway to accommodate future chairlift, bright, non-glare lighting in hallways and stairwells, easy-touch, rocker-style light switches at top and bottom of stairs, 42 inches off floor, electrical outlets 18 inches off the floor, replace or remove any worn or torn carpeting. In our entrances and exits we have included; at least one no-step pathway into the house, ample and level maneuvering room, 5 feet by 5 feet, in entryway, 36-inch-wide entry door with lever-style handle, zero-threshold doorway, covered entrance to protect from inclement weather , shelf near entrance to put packages while opening and closing door, bright lighting inside and outside entries, lighted doorbell at an easily reachable height, easy-open door locks, such as keyless locks with remote or keypad codes, high-visibility house numbers, handrails on both sides of steps, railings on porches, slip-resistant walkways and entryways.
We have taken various precautions so that our veterans have a safe and happy stay at our village. We have incorporated the latest in design technology to insure our honorable veterans enjoy their time in their home and feel a sense of belonging.
Friday, March 4, 2011
Meetings for this week
Hope to see you there!
What we need:
Finalize all images including:
Overall site plan
Diagrams showing regional connections and city planning nodes and corridors, transportation, etc.
Street Views - As many locations as possible
Exterior and interior of the second option single family home in Revit and Floorplanner.com
Exterior and interior plans for the apartment units in Floorplanner.com
Draft floor plans of the community center, library, school, auditorium, chapel, commercial spaces in CAD
Collect all images of building materials and sustainable systems
Text for design concept
Text for all engineering systems
Text for all sustainable systems
Text for Passive House
Text for Universal Design
Text for Active Design features
Cost Estimate
Phasing Plan
Site Section and elevations
Images of poorly design retirement developments for comparisons
Personal narrative
Transportation flow diagrams and multimodal connection
Proposed zoning changes
As you can see we need everyone's help!