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Heat Pump Water Heaters Achieve Significant Peak Reduction and Energy Savings

Posted by Green Builder Staff

Feb 11, 2020 4:32:56 PM

Grid-Interactive Efficient Buildings (GEBs) can be a means to improving electricity affordability, enabling distributed energy integration, and improving the comfort of building occupants. The Building Technologies Office (BTO) within the Office of Energy Efficiency and Renewable Energy is researching and innovating in this space by focusing on how and when to use heat pump water heaters.

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Field Test: Ventilating an ADU for Optimal Air Quality

Posted by Matt Power, Editor-In-Chief

Dec 11, 2019 9:28:50 AM

By combining an “always on” ERV and quiet bath fan this installation achieved above-and-beyond air quality.

One of the challenges with small “mother-in-law” apartments and accessory dwelling units (ADUs) is that they’re often built without adequate ventilation, or unbalanced systems that create drafts or fail to clear the air, or worse, haul other pollutants back into the building.

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Multifamily Project Generates HERS Ratings of 2 or Less For Each Unit

Posted by Green Builder Staff

Nov 6, 2019 7:02:44 PM

A carefully planned design means a real ‘Revival’ for this multifamily project.

Homes built to the U.S. Department of Energy (DOE)’s Zero Energy Ready Home (ZERH) criteria can save energy and cut costs for homeowners. They’ve also been known to provide a more comfortable, quieter living experience. And, in Fort Collins, Colo., they may just be helping to spark a neighborhood revival.

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Can Whole House Air Filters Damage HVAC Equipment?

Posted by Matt Power, Editor-In-Chief

Jul 22, 2019 8:38:29 PM

This question came up in our recent webinar on Building Science, from listeners concerned about the impacts of various filter media on airflow through ducted systems.

Q: Ive heard that certain air filters cause airflow restriction and damage to HVAC equipment.  I read that if the face area of a filter medium is larger, and an ECM motor is used, the flow reduction is less significant.

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The Problem with HRVs

Posted by Srikanth Puttagunta, PE, Steven Winter Associates

Apr 15, 2019 11:04:19 AM

When integrated with the HVAC system, most E/HRV's don't deliver the desired ventilation air. A new design seeks to solve this problem, but EEBA needs your input.

Builders believe that if they install an Energy Recovery or Heat Recovery Ventilator (E/HRV) they have ensured good indoor air quality. In reality, that's seldom the case.

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Cool and Quiet: Can you have both in a multi-family project?

Posted by Green Builder Staff

Jul 17, 2017 11:37:20 AM

At a landmark Rhode Island mixed-use project, an energy-efficient HVAC system means noise is no problem.

ORIGINALLY BUILT IN 1872, the Foundry has a rich history. Once the manufacturing campus of industrial powerhouse Brown & Sharpe, the 13 brick buildings located on 26 acres at the edge of downtown Providence, R.I., have been meticulously restored into a mixed-use complex that bridges old and new.

In the middle of the sprawling complex is the Sharpe Building at the Foundry, which served as a mill during the building’s manufacturing years. The goal for the renovation of the 157,500-square-foot, six-story building was to develop 196 loft-style luxury residences. But because it was placed on the National Register of Historic Places in 2003, the Sharpe Building required a renovation that upgraded functionality of the building while maintaining its historic design.

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Building Science Webinars

Posted by Green Builder Staff

May 5, 2017 9:48:23 AM

Green Builder Media hosted two webinars our Building Science readers may be interested in.  

Recordings of all our webinars are available here:  http://www.greenbuildermedia.com/impact-series-archive-ty

 

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Net-Zero Trifecta: Solar, Heat Pumps and Smart Controls

Posted by Matt Power, Editor-In-Chief

Feb 14, 2017 12:21:29 PM

Getting to net zero is within easy reach with new technologies. The only real hurdles are politics and ignorance.

A FEW MONTHS AGO, I spoke to builder Gene Myers of Thrive Home Builders in Denver about whether mini-split heat pumps could be powered by solar PV panels, essentially converting electricity into affordable, clean heating and cooling for homes.

“We’re doing that on all of our new homes,” Myers told me. “We have been for a couple years now.”

That took me by surprise.

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Driving Innovation to Develop High-Performance Building Solutions

Posted by Jessica Porter

Oct 28, 2016 1:17:10 PM

Our annual building science partnership with the DOE and Building America takes a peek into new systems and products coming down the pipeline — to better manage building envelopes, moisture control, HVAC and IAQ.

ONE-FIFTH OF ALL energy consumption is used by buildings, and nearly half of that consumption is used to keep buildings cool, says Eric Werling, Building America program director for the Department of Energy (DOE). Because most Americans spend two-thirds of their lives inside their homes, it’s important to continue making those buildings and the systems inside them as energy efficient—and healthy to live in—as possible.

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Pros and Cons of Earthen Masonry Heating Systems

Posted by Erica and Ernie Wisner, Guest Columnists

Aug 1, 2016 12:00:00 AM

As an alternative to straight up passive solar design, super-efficient masonry heaters may make sense.

For the past decade, I've been focused on sustainable heating in the home. Average North American households use 30-70% of energy for heating and cooling. This is a direct cost of maintaining our lifestyles, both in dollars spent and impacts on communities and global resources.

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