Tag Archives: Energy

Defining Humidity Ratio and Relative Humidity

Green Building

Defining Humidity Ratio and Relative Humidity

Originally published on April 4, 2018 by BNP Media through the Building Enclosure Blog. How does a hot-air balloon rise? Fire up the burner and the temperature of the air captured within the balloon increased. The molecules of the air take on the thermal energy and become more excited. The excited molecules create more space between them. As a result, the air expands as its temperature increases. Thus, one pound of air at 80-degrees Fahrenheit (°F) is a larger volume than….

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Thermal Dynamics: Visualizing Sensible Versus Latent Heat

Green Building

Thermal Dynamics: Visualizing Sensible Versus Latent Heat

Originally published on March 12, 2018 by BNP Media through the Building Enclosure Blog. It’s the first law of thermodynamics. The Law of Conservation of Energy states that energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another. This is the foundation of phase change in the physical environment. Molecular activity requires energy. The activity does not just magically happen. Phase Change When a material changes its state or phase (e.g., going….

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Five Diagrams Every Design Team Should Know

Green Building

Five Diagrams Every Design Team Should Know

Originally published on February 7, 2018 by BNP Media through the Building Enclosure Blog. They might be considered cliché; however, they might also be very true. The following are five diagrams that frequently work their way into slide decks about green building design and construction. You should be familiar with all of these. Let’s unpack each one briefly – going back to primary source material and acknowledging attribution. Read more…

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Tracking Energy Efficiency Improvements in ASHRAE Standard 90.1

Green Building

Tracking Energy Efficiency Improvements in ASHRAE Standard 90.1

Originally published on January 17, 2018 by BNP Media through the Building Enclosure Blog. It may be the most well-known standard in the building design and construction industry: ANSI/ASHRAE/IES Standard 90.1, Energy Standard for Buildings, Except Low-Rise Residential Buildings (or more commonly, ASHRAE Standard 90.1). It serves as the basis for many energy codes across the U.S. It is also the energy standard referenced by LEED and other green building certification systems. Every few years, Standard 90.1 is updated by….

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Toward Benchmarking Embodied Carbon in Buildings

Green Building

Toward Benchmarking Embodied Carbon in Buildings

Originally published on December 14, 2017 by BNP Media through the Building Enclosure Blog.   The term “Global Warming Potential” (GWP) is a measure of greenhouse gas emissions, such as carbon dioxide and methane. These emissions are causing an increase in the absorption of radiation emitted by the Earth, increasing the natural greenhouse effect. This may in turn have adverse impacts on ecosystem health, human health, and material welfare. With regard to buildings, GWP is gauged by carbon emissions and….

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GBCI Ramps Up Service Offerings to Green Building Industry

Green Building

GBCI Ramps Up Service Offerings to Green Building Industry

Originally published on November 15, 2017 by BNP Media through the Building Enclosure Blog.   You probably know Green Business Certification Inc. (GBCI) as the third-party entity that evaluates and certifies your office’s LEED projects. What you may not be aware of is that GBCI currently provides third-party verification services for certification and credentialing on a variety of platforms in addition to LEED. By implementing a standardized, scientific process through which a product, process, or service is reviewed by a….

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Energy Use Intensity (EUI) in Simple Terms

Green Building

Energy Use Intensity (EUI) in Simple Terms

Originally published on August 17, 2017 by BNP Media through the Building Enclosure Blog.   Energy use intensity – or EUI. It has been called “the miles per gallon rating of the building industry,” but many design and construction professionals are not entirely sure how EUI is defined and what its utility is with regard to project. Below is a primer to help get anyone started.   Energy Use Intensity (EUI) Energy Use Intensity (EUI) can be defined as the….

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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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Embrace the Data

Green Building

Embrace the Data

Originally published on March 7, 2017 by BNP Media through the Building Enclosure Blog. In work as in my personal life, I am often thought of as “a data guy.” Whether it is a personal activity tracker, a vehicle dashboard that provides a breakdown of fuel efficiency, a home energy monitor, or my daily perusal of MLB box scores, I tend to be immersed in numbers constantly. I often like to lean on numbers because they can provide some measure….

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Stages of Design and Types of Energy Models

Green Building

Stages of Design and Types of Energy Models

Originally published on February 13, 2017 by BNP Media through the Building Enclosure Blog. . The publication An Architect’s Guide to Integrating Energy Modeling in the Design Process is a comprehensive (and free) 86-page document from the American Institute of Architects (AIA) that defines the fundamentals of energy modeling, outlines the current state of various performance and analysis tools, and foretells the direction of an architectural industry increasingly focused on performance-based design. Among other components of the document, the guide….

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