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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


A New Spin On VRF & Ventilation [in a School]

Engineered Systems, Feb. 2017, by John Parris Frantz.
http://www.esmagazine.com/articles/98147-a-new-spin-on-vrf-ventilation

"A Tennessee district faced an old school HVAC challenge: aging ventilators and space constraints. So this team tried a new-school variation on common VRF retrofits to deliver improved efficiency and critical IAQ: they decentralized the outdoor air, combining enthalpy wheel and VRF components within a single classroom enclosure."

Where To Place Air-Cooled Chillers

Engineered Systems, Feb. 2017, by Kishor Khankari.
http://www.esmagazine.com/articles/98146-where-to-place-air-cooled-chillers

"Warm discharge plumes sweeping back into air-cooled condensers is nobody’s idea of an ideal performance environment. This CFD study shows how wind speed, wind direction, spacing between chillers, and separation from adjacent buildings all factor into the conversation about the best defense against unwanted hot air."

Design of a High-Temperature-Hot-Water-Plant Expansion

HPAC Engineering, Jan. 2017, by Eric Chrencik.
http://hpac.com/heating/design-high-temperature-hot-water-plant-expansion

"There are four main components of HTHW-plant design:
  • HTHW-generator selection.
  • Pump selection.
  • Consideration of system expansion and makeup.
  • Stress analysis and piping layout.
This article discusses all four for a recently completed HTHW-plant expansion at George Mason University in Fairfax, VA."

Can Energy Efficiency and Health Industries Bring Momentum Mainstream?

E4TheFuture Blog, Jan. 12, 2017, Julie Michals.
http://e4thefuture.org/blog/can-energy-efficiency-and-health-industries-bring-momentum-mainstream/

"When E4TheFuture decided to explore the health co-benefits of energy efficiency in its November 2016 white paper Occupant Health Benefits of Residential Energy, we had a particular reason for doing so. Our initial focus was to document studies that could help inform cost-effectiveness screening—specifically, to help make the case that important health co-benefits of efficiency exist, and their value is not $0. We were excited to piggyback on a broader research effort undertaken by the US DOE."

Selecting Actuators for Industrial HVAC/Process Dampers

HPAC Engineering, Dec. 2016, by Bill Lampkin.
http://hpac.com/iaq-ventilation/selecting-actuators-industrial-hvacprocess-dampers

"If it is to accomplish its intended purpose, any damper installed in a HVAC system must be equipped with an appropriate actuator. The selection of an actuator for a specific damper requires consideration of a number of factors. This article examines the actuator-selection process. (Note: While damper actuators often go by other names, such as damper motors, damper operators, and motor packs, “damper actuator” is the appropriate terminology.)"

Refrigerants in Transition: Impacts on HVAC-System Design

HPAC Engineering, Dec. 2016, by Ryan Geister.
http://hpac.com/air-conditioning/refrigerants-transition-impacts-hvac-system-design

"With the world’s attention increasingly focused on climate change, organizations are more attuned to carbon-footprint implications during the building-design process and the impacts buildings have on the environment. HVAC-system efficiency plays a crucial role in a building’s environmental impact. While it is important to choose equipment that delivers high-efficiency performance, it is even more critical to consider a building’s entire HVAC system during design."

How To Calculate Life-Cycle Costs and Justify Energy Efficient HVAC Upgrades

Building Operating Management, Jan. 2017, by Conrad Kelso and Phil Lebrun.
http://www.facilitiesnet.com/hvac/article/How-To-Calculate-Life-Cycle-Costs-and-Justify-Energy-Efficient-HVAC-Upgrades--16971

"...a three-part article on how determining long-term costs can make energy efficiency more attractive to upper managers."

Chiller Plant Optimization: Improving On Variable Primary Flow Chilled Water System Operation

Engineered Systems, Nov. 2016, by Mark Bandini, Ernie Brandusa, and Carlos Petty.
http://www.esmagazine.com/articles/98002-chiller-plant-optimization-improving-on-variable-primary-flow-chilled-water-system-operation

"The larger or more complex a cooling plant becomes, the more challenges to its efficiency it will face. When applied wisely, modern controls and equipment can rise to meet those challenges. Read up on active balancing, pump dynamic differential setpoint control, and more responsive tactics for when the worst thing you can do is just go with the flow."

Why Would A Hospital Consider Absorption Chillers?

Engineered Systems, Nov. 2016, by Marcia Karr.
http://www.esmagazine.com/articles/98005-why-would-a-hospital-consider-absorption-chillers

"While CHP is good, CCHP can be even better for your facility and its locale. The author surveys the potential benefits, building code input, and electrical considerations. After a couple of case studies, she then reviews considerable engineering re-sources the DOE provides for those contemplating a forward-looking but proven design."

Specifying HVAC Equipment in Critical Environments

The Construction Specifier, Dec. 2016, by Matt Strong.
https://www.constructionspecifier.com/specifying-hvac-equipment-in-critical-environments/

"Cleanrooms present unique design challenges because they must meet specific requirements that go beyond what is encountered in a typical commercial space. When specifying HVAC equipment in a critical environment such as a cleanroom, engineers must consider the key issues of air filtration, humidity control, and pressurization. While a specifying engineer may have experience with these issues in the context of a traditional commercial application, the considerations are substantially different in a cleanroom."
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The Energy Newsbriefs Blog is a continuation of the weekly Energy Newsbriefs. Please bookmark this site and return frequently. Although we will not be accepting comments from within the Blog, we would be happy to hear from you by email at library@energy.wsu.edu