Green Building News

A New Online HVAC Calculator Is Available

Posted on August 18, 2017 by Scott Gibson

A software company specializing in products for builders has released an online program that performs three important calculations used in the design of HVAC(Heating, ventilation, and air conditioning). Collectively, the mechanical systems that heat, ventilate, and cool a building. systems: Manual J, Manual D, and Manual S calculations.

Hearings Open on Solar Panel Trade Case

Posted on August 16, 2017 by Scott Gibson

The U.S. International Trade Commission opened hearings in Washington on Tuesday that could result in higher prices for imported solar technology and, according to a solar trade association, cost 88,000 Americans their jobs.

Ontario Plans Building Code Revisions

Posted on August 9, 2017 by Scott Gibson

Revisions planned for the Ontario Building Code will increase energy efficiency in new homes, close existing efficiency loopholes for high-rise buildings, and reduce greenhouse gas emissions.

Hack Turns Amazon Echo Into a Wiretap

Posted on August 7, 2017 by Scott Gibson

A British security researcher has demonstrated how the Amazon Echo, a wi-fi connected smart speaker, can be turned into a surveillance tool without the owner's knowledge.

Making Buildings With Plywood Frames

Posted on August 3, 2017 by Scott Gibson

Students and faculty at Clemson University's School of Architecture are developing a framing technique that will allow buildings to be assembled rapidly from pre-cut plywood components with a minimum of tooling and using mostly unskilled labor.

Florida City Will Require Solar Panels

Posted on July 31, 2017 by Scott Gibson

Beginning in mid-September, South Miami, Florida, becomes the first city in the state and the first outside California to require solar panels in new residential construction.

Developers Replace Golf Courses with Hiking Trails

Posted on July 27, 2017 by Scott Gibson

The days of golf-course communities may be numbered, with developers finding home buyers are more interested in hiking trails and shared gardens than they are in living right next door to a golf course.

Fire Tests for Cross-Laminated Timber

Posted on July 27, 2017 by Scott Gibson

Tests at a federal laboratory suggest that cross-laminated timber (CLT) components used in a multi-story apartment building would perform well in the event of a fire.

Startup Cites Gains in Ground-Source Heat Pump Design

Posted on July 20, 2017 by Scott Gibson

A tech startup that began as a "moonshot" project at Google X has raised $2 million in seed money as it promotes a more affordable type of ground-source heat pumpHome heating and cooling system that relies on the mass of the earth as the heat source and heat sink. Temperatures underground are relatively constant. Using a ground-source heat pump, heat from fluid circulated through an underground loop is transferred to and/or from the home through a heat exchanger. The energy performance of ground-source heat pumps is usually better than that of air-source heat pumps; ground-source heat pumps also perform better over a wider range of above-ground temperatures..

Details about the system developed by Dandelion were skimpy. The company says that it has developed "clean drilling technology" that will be much less disruptive to property than the current practice of drilling wells or excavating deep trenches for the heat exchange tubing the systems need.

When High-Performance Homes Don’t Sell

Posted on July 19, 2017 by Scott Gibson

Five years ago, Brackett Estates was a net-zero community in Wells, Maine, that existed mostly inside the head of builder Jesse Ware. He and his business partners had a single house, a two-story modular packed with insulation and powered by rooftop solar panels — and a plan to build 25 more of them for a new generation of homebuyers who wanted green, energy-efficient housing.

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