New LBNL Resource: Steps to Improving Ventilation in Existing Homes

http://resaveguide.lbl.gov/

Context: This work was done under RESAVE, a California Energy Commission (CEC) Public Interest Energy Research (PIER) Program. The overall goal of this program is to facilitate the reduction of energy and peak power spent in homes to condition air that enters from outdoors. Infiltration, the uncontrolled exchange of air through leaks and penetrations, typically accounts for over one-third of the total space conditioning energy. New homes typically spend the same fraction of energy on mechanical ventilation. This program aims to reduce ventilation and infiltration related peak load and energy costs by 25-50%.

This program will provide important research and technical tools to advance the strategy of "Build Tight, Ventilate Right". This approach combines high-quality building construction (low leakage, low emitting materials, etc.) with optimized ventilation systems to maximize energy efficiency while maintaining acceptable indoor air quality (IAQ). The program will develop new technologies and recommendations for improvements to existing technologies. The involvement of industrial partners in the program will ensure that these technological developments find their way into California homes. The program will leverage best practices and leading-edge building and ventilation technologies from California, the United States, Japan and Europe. A specific goal will be the optimization of hybrid, passive and active ventilation systems to facilitate their adoption in California homes. In addition to technology development, this program will make recommendations for changes to California State Energy Code for buildings (Title 24) together with providing the diagnostic and commissioning tools necessary to ensure code compliance. These tools will also help in market transformation by demonstrating the performance and value of good ventilation systems to consumers, contractors, building managers and other potential decision makers and beneficiaries.

Views: 416

Reply to This

Replies to This Discussion

just wanted to thank you for the information I have downloaded the pdf

New technology will continue to bend the curve on these models. Vermont Energy Investment Corp (VEIC), Northwest Energy Efficiency Alliance (NEEA)  and others are developing these models, with HRVs/ERVs operating at .3 watts/cfm and with 90% ASE efficiencies as the basis for dramatically increased energy efficiency, comfort and IAQ. Additionally, NEEA has commissioned a residential ventilation study that should shed some light on the efficacy of ventilation schemes in various levels of tightness in these homes. I think that this will be one of the most significant conversations with regards to DER, NZE, retrofit and other programs in coming months. 

Washington state is taking commentary on their adoption of new codes, and this subject is the one that is garnering the most attention right now as well. The NEEA study was prematurely referenced in a recent blog, as the study is just getting under way, and "results" were reported already. 

LBL and other organizations studying this issue will be critical to avoiding unintended consequences that often follow new code requirement when the science has not yet caught up with the code. We can learn a lot from Europe, where they went down this road already, and in specific markets they made the same mistakes that we seem determined to make as well. 

RSS

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Hal Skinner added a discussion to the group The RCC Classroom (Radiant Control Coatings)
Thumbnail

Improved acoustics

Some RCCs claim to improve acoustics .  Here are a few examples of ours.…See More
19 hours ago
Patrick Carter replied to Patrick Carter's discussion Minneapolis Blower Door & Test Equipment for Sale! in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"As of yesterday 09/19/2014, the equipment has been sold..."
yesterday
Hal Skinner replied to Hal Skinner's discussion An example of what an RCC can do with no R- insulation in the walls.
"Mornin Brett. 90 to 85, yes a slight variance there.  Same ASTM test, different scientists,…"
Friday
Bret Curry replied to Hal Skinner's discussion An example of what an RCC can do with no R- insulation in the walls.
"Great information Hal. It appears the thermal emissivity in your test was .85 rather than .90. Are…"
Friday
Juan Roca commented on Dale Stephens's blog post LED Lighting - Garage Door opener interference
"Hi,There is a real problem with remote controls and LED lights. However, there is a solution in the…"
Friday
Profile IconJuan Roca and Elizabeth Coe joined Home Energy Pros
Thursday
Casey Gesell posted videos
Thursday
Gerald Shechter posted videos
Thursday

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service