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Project Title High Environmental Performance 2 (HEP 2) - Residential Housing for New York State
Start Date 06/01/2007
End Date 06/30/2009
Primary Partner: Syracuse University
Primary Contact: Stenson, Timothy - Associate Professor
Other Project Contacts:
Zhang, Jianshun - Co-Principal Investigator
Bomberg, Mark - Co-Principal Investigator
Project Type: CARTI II
Technical Description:
The project will be comprised of two stages: Stage 1 will focus on compact and spatially efficient designs for a three bedroom detached unit and a two bedroom attached unit. Design objectives include integrated passive and active heating, cooling, and ventilating systems. Stage 2 will include the high environmental performance design of the building envelope. Enclosure systems will feature several new developments for northern climates - namely unvented cathedralized ceilings, 3-coat stucco on exterior spray polyurethane insulation in conjunction with cellulose fiber insulation filled wood frame walls, ventilated siding, and double-envelope facades. Computer simulations and laboratory testing of these enclosure systems will be conducted and their suitability for NYS homes assessed. To address this complex of design, new material, and environmental technology three Syracuse University experts will collaborate: Timothy Stenson, Associate Professor of Architecture with experience in green building technologies and urban design; Mark Bomberg, Research Professor with experience in the science of building enclosures, who also leads the research consortium Assembly for Built Environmental Systems; and Jianshun Zhang, Professor of Engineering and director of Building Energy and Built Environmental Systems laboratory. The team, having experience in lower energy residential design, construction materials, mechanical systems, and indoor environment quality issues will be able to address the project’s practical challenges and achieve results that advance energy efficient residential design.
Expected Outcomes:
This project seeks to develop designs for housing units that dramatically reduce the energy use of new homes while providing a more comfortable and healthy indoor environment, improve durability, and lower construction costs.
Accomplishments:
All project objectives stipulated in the funded grant proposal have been successfully completed:
Stage 1 - Objective 1. Compact and spatially efficient designs for a three bedroom detached unit and a two bedroom attached unit, including integrated passive and active heating, cooling, and ventilating systems.
A 1,615 square foot three-bedroom unit, and a 1,220 square foot two-bedroom unit were developed through schematic design. These unit designs incorporate a range of low-energy strategies for heating and ventilating.
Stage 1 - Objective 2. Building envelope and construction detail design.
Low-tech, off-site wall panel prefabrication techniques were studied, resulting in 3 different cases using various methods and materials. Exterior insulation is used in all three cases, either extruded polystyrene or spray polyurethane.
Stage 2 - Objective 1 & 2. Estimate the cost benefit relation in controlling UAF (Uncontrolled Air flow) through walls. Select two best strategies for each major component of the envelope and estimate the cost benefit relation in thermal resistance.
Two techniques for controlling infiltration and exfiltration through exterior wall construction have been studied. A comparison of construction costs versus energy performance for both of these options was conducted.
Stage 2 - Objective 3 & 4. Perform laboratory testing and computer modeling for predicting heat, air and moisture performance of the building envelope and compare with those measured under field conditions. Perform laboratory testing and computer modeling for predicting ventilation performance and compare with those measured under field conditions.
All primary components of the building envelope composition are being considered with respect to energy performance and upfront costs. An integrated testing and modeling approach was developed to both measure local fluxes and calculate the average R-values for building components from 2-D HAM models.
Benefits:
Evaluation of lower energy technologies for residential housing will result in more energy efficient and lower cost energy solutions in building designs.
For more information: http://www.energysystems.syr.edu/pdf/Poster_CoE2008_HEP1&2.pdf
High environmental performance housing features.
Image Credit: Syracuse University
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