Tag Archives: solar energy

Applets for Energy and Environmental Design

Green Building

Applets for Energy and Environmental Design

Originally published on July 10, 2017 by BNP Media through the Building Enclosure Blog. Newsflash: There are a lot of great (and free) online resources for design professionals. When I am having exchanges about energy and environmental design analysis with colleagues and students, it seems like I am constantly referring them to any number of small, accessible online utility programs for performing simple – yet highly sophisticated – functions. Some would refer to these small programs as applets. Below, I have….

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Indiana’s First Net Zero Energy Building Certification is ‘Revealed’

Green Building

Indiana’s First Net Zero Energy Building Certification is ‘Revealed’

For over half a decade, the Chrisney Branch of the Lincoln Heritage Public Library has touted its intent of producing more electricity than it consumes (a term known as “Net Zero Energy”). However, it has always been difficult to substantiate the claim with stakeholders, patrons, and the general public. In order to reaffirm its commitment to environmental stewardship, Lincoln Heritage Public Library sought to formalize its claim that the Chrisney Branch is the first net-zero energy building in the State….

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The Difference Between Reflectance and Emittance

Green Building

The Difference Between Reflectance and Emittance

Originally published on November 18, 2015 by BNP Media through the Architectural Roofing & Waterproofing Blog. What is emittance? Among the three basic forms of heat transfer – conduction, convection, and radiation – the term emittance refers to a material’s ability to release heat through radiation. The term necessarily refers to the heat exchange at surface of a material because heat exchange through a solid would be conductive and heat exchange through a fluid would be convective. Emittance is the….

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Understanding the Profile Angle

Green Building

Understanding the Profile Angle

Originally published on July 6, 2015 by BNP Media through the Walls & Ceilings Blog. If you’ve ever designed an overhang to protect a window, you have been confronted with the question of how far should it extend? It seems like a simple enough question, yet the factors to consider lead to ever more questions: …which way does the window face? …how much of the window should be protected? …how is the overhang length related to various Sun angles? At….

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Community Connection

Green Building

Community Connection

Photograph property of Browning Day Mullins Dierdorf Architects Case Study: Lincoln Heritage Public Library Chrisney Branch Originally published in the Summer 2014 issue of High Performance Buildings (HPB) magazine, a publication of ASHRAE. By Daniel J. Overbey, AIA; and William M. Brown, AIA For the people of Chrisney, Ind., opportunity for social and economic investment has not been knocking. This community of fewer than 500 has been in a gradual economic decline over the past several decades. Having already lost….

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Using Renewable Energy in LEED v4

Green Building

Using Renewable Energy in LEED v4

Energy efficiency is the starting point for any high-performance building. After reducing overall energy needs through building-related energy conservation measures, the next step is to invest in passive systems and high-efficiency HVAC systems. Smart controls can help a building operate even more efficiently. But in the end, there will always be a need to purchase or create energy for the building. On-site generation of renewable energy or the purchase of green power allows buildings to source the remaining energy needs without….

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Visualizing “Seasonal Lag” Effect

Green Building

Visualizing “Seasonal Lag” Effect

  I recently completed teaching a unit on the topic of solar geometry. Among the various facets of the subject matter, I talked to the class at length about the Earth’s orbit around the Sun (which, evidently, is a revelation to 1/4 of American population), the northern hemisphere’s 23.5° tilt toward and away from the Sun during the summer and winter, respectively, and how the distribution of radiant flux is affected by the relative tilt of the Earth’s surface at a….

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Efficiency: Toward Net-Zero Energy (VoiceThread Presentation)

Green Building

Efficiency: Toward Net-Zero Energy (VoiceThread Presentation)

  Four years ago, I co-authored a white paper with my colleague Nick Worden at Browning Day Mullins Dierdorf (BDMD) Architects and William Brown, currently the Director of Sustainability at Indiana University. The white paper was published at 2010 International High Performance Buildings Conference at Purdue University and it presented a full-year of energy consumption and on-site renewable energy production data for the Chrisney Library (a branch of the Lincoln Heritage Public Library), verifying the project as the first non-residential net-zero (site) energy facility in Indiana….

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