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Energy Newsbriefs Blog

This current awareness service is prepared by the WSU Energy Program Library with funding from the U.S. Department of Energy State Energy Program. This information is provided for energy professionals and interested members of the public to highlight recent energy-related news, articles, and reports that discuss energy efficiency, energy conservation, and renewable sources of energy in engineering and policy circles.

 

Category: HVAC/R

HVAC/R


Fan Selections and Their Energy Impacts, Part 2 of 2

HPAC Engineering, Oct. 2016, by Khalil Kairouz.
http://hpac.com/iaq-ventilation/fan-selections-and-their-energy-impacts-part-2-2

"Fans and fan systems can be significant consumers of energy in commercial applications and the greatest consumer in industrial ones. Concerned about underperformance, designers tend to compensate for uncertainties by adding capacity to fans. Oversizing fan systems creates problems that can increase costs and decrease reliability. This article explains how to evaluate fans and fan systems and their impact on operating costs."

Chiller Plant Optimization: The Role Of Controls

Engineered Systems, Oct. 2016, by Carlos Petty.
http://www.esmagazine.com/articles/97961-chiller-plant-optimization-the-role-of-controls

"Properly selected automated controls to minimize chiller plant energy, power consumption, and the cost of operations are essential for overarching chiller plant performance. Effective plant managers are driven to operate their plants at the lowest life cycle costs possible. This begins with the initial first cost of construction and recurring plant lifecycle operating costs, while still accounting for all the complexities and interaction among major plant equipment components."

The Internet of Things and Intelligent Facilities Management

HPAC Engineering, Nov. 7, 2016, Leroy Walden.
http://hpac.com/internet-things/internet-things-and-intelligent-facilities-management

"The application of intelligent-building and IoT technology should support three important goals: reduce costs, reduce risk, and improve the occupant experience."

Advanced Heating Technologies for VRF

Construction Specifier, Oct. 2016, by Cain White.
http://www.constructionspecifier.com/advanced-heating-technologies-for-vrf/

"Cold temperatures and disruptive precipitation create problems every year. When it comes to heating spaces, the challenge tends to be how to do 
it effectively and efficiently...Variable refrigerant flow (VRF) makes the most of the square footage and budget while offering energy-efficient and reliable technology providing superior occupant comfort. It achieves success by dividing a building’s interior into zones, each of which can be operated separately."

ASHRAE/IES Publish 2016 Energy Efficiency Standard [ASHRAE 90.1]

ASHRAE News, Oct. 26, 2016, by Jodi Scott.
https://www.ashrae.org/news/2016/ashrae-ies-publish-2016-energy-efficiency-standard

"Numerous energy savings measures resulting from industry input are contained in the newly published energy efficiency standard from ASHRAE and IES. ANSI/ASHRAE/IES Standard 90.1-2016, Energy Efficiency Standard for Buildings Except Low-Rise Residential Buildings, contains 125 addenda published since the 2013 standard. This 2016 version is the 10th edition published since the original standard was first published in 1975 during the energy crisis of the United States."

Know When, Where to Specify VRF Systems

Consulting-Specifying Engineer, Sept. 2016, by James M. Del Monaco.
https://www.csemag.com/industry-news/codes-and-standards-updates/single-article/know-when-where-to-specify-vrf-systems/afe0f6f206f06f553b360c1b00bb694b.html

"Variable refrigerant flow (VRF) offers an alternate HVAC solution. Its key attributes include zonal control, energy efficiency, and indoor air quality (IAQ). To help facilitate their successful design and operation, engineers should take advantage of the available resources and training offered by manufacturers, utilities, and others."

Fan Selections and Their Energy Impacts, Part 1 of 2

HPAC Engineering, Sept. 2016, by Khalil Kairouz and Dale Price.
http://hpac.com/iaq-ventilation/fan-selections-and-their-energy-impacts-part-1-2

"Evaluating fans and fan systems and their impact on operating costs."

Stanford University's "Fourth-Generation" District Energy System

District Energy, 4th Quarter 2016, by Joseph C. Stagner.
http://www.districtenergy-digital.org/districtenergy/2016q4?sub_id=DOwgMT0rNL8TV&folio=19&pg=21#pg21

"In 1987 Stanford took a giant step forward in efficiency and environmental stewardship with the installation of a 50 MW natural gas-fired cogeneration plant to provide electricity, steam and chilled water for its campus. Three decades later, the Cardinal Cogeneration plant has been replaced by the new $468 million Stanford Energy System Innovations (SESI) project...."

Designing With Liquid-Immersion Cooling Systems

Consulting-Specifying Engineer, Sept. 21, 2016, by Saahil Tumber.
http://www.csemag.com/single-article/designing-with-liquid-immersion-cooling-systems/50ef4dcd4e7dee72b8d45e1fa4608abb.html

"Liquid cooling refers to a scenario where liquid (or coolant) must be supplied to the ITE. An IT cabinet is considered to be liquid-cooled if liquid, such as water, dielectric fluid, mineral oil, or refrigerant, is circulated to and from the cabinet or cabinet-mounted equipment for cooling. Several configurations are possible, depending on the boundary being considered (i.e., external or internal to the cabinet). For the same heat-transfer rate, the flow rate requirement for a liquid and the energy consumed by the pump are typically much lower than the flow rate requirement for air and the energy consumed by the fan system. This is primarily because the specific volume of a liquid is significantly lower than that of air."

HVAC Codes and Standards: Cooling and Energy Efficiency

Consulting-Specifying Engineer, Aug. 2016, by Gayle Davis.
http://www.csemag.com/single-article/hvac-codes-and-standards-cooling-and-energy-efficiency/4f684e7f21eada9b13b825014bbfc464.html

"Codes and standards dictate the design of HVAC systems; however, there are ways to improve the design of nonresidential buildings to achieve maximum energy efficiency."
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