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Energy Newsbriefs Blog

The WSU Energy Program Library prepares this current awareness blog with funding from the U.S. Department of Energy State Energy Program. These articles highlight energy-related news, articles, and reports about energy efficiency, energy conservation, and renewable sources of energy for energy professionals and interested members of the public.

Category: HVAC/R

HVAC/R


State Of Diffusion: Have Typical Air Distribution Design Habits Gone Stale?

Engineered Systems, May 2017, by Steven G. Liescheidt.
http://www.esmagazine.com/articles/98294-state-of-diffusion-have-typical-air-distribution-design-habits-gone-stale

"After decades of the old terminal velocity standby, it may be time to do away with “We’ve always done it that way.”"

Optimizing Centrifugal Chiller Systems

Engineered Systems, Apr. 2017, by Chris Miller.
http://www.esmagazine.com/articles/98238-optimizing-centrifugal-chiller-systems

"Retrieving every last bit of performance from the system while stopping short of the surge line is no small feat. Dig into sizing, tower selection, chilled water loads and stability, and condenser water management to leave no efficiency stone unturned."

Modular Chillers Reduce Energy, Ownership Costs, Ensure Uptime

HPAC Engineering, Mar. 2017, by Climacool Corp.
http://hpac.com/air-conditioning/modular-chillers-reduce-energy-ownership-costs-ensure-uptime

"At the Buck Institute for Research on Aging in Novato, Calif., an independent biomedical research facility focused on the connection between aging and chronic disease, prepared to embark on a 60,000-sq-ft expansion of its 185,000-sq-ft research facility, [they] sought a HVAC solution that not only could provide added capacity, but would optimize energy efficiency, minimize overall consumption, and reduce total cost of ownership. With the facility running on 100 percent single-pass outdoor air and requiring six air changes per hour—any HVAC-component downtime would require a complete shutdown of the facility—the Buck Institute needed a solution that also would minimize downtime—both during construction and post-occupancy—with built-in redundancies."

Evaluating and Optimizing Chilled Beam Performance

Buildings, Mar. 2017.
http://www.buildings.com/article-details/articleid/21017/title/evaluating-and-optimizing-chilled-beam-performance

"Chilled beams are gaining popularity in North America, so engineers are establishing better models and methods for their performance. Terminal unit geometry of active chilled beams is one area where researchers are improving efficiency."

Preliminary Energy Savings Announced for ASHRAE/IES 2016 Energy Standard [90.1]

Engineered Systems, Feb. 2017.
http://www.esmagazine.com/articles/98173

"More than 30% energy savings can be achieved using the 2016 version of Standard 90.1, according ASHRAE. The savings was found during a recent analysis conducted by Pacific Northwest National Laboratories (PNNL) in support of the U.S. Department of Energy (DOE) Building Energy Codes Program."

Optimized Energy Recovery

ASHRAE Journal, Jan. 2017, by Marvin Kirshenbaum.
http://ashraecok.org/images/downloads/Technical_Literature/journal_2017_01_optimized_energy_recovery.pdf

"This article addresses extending the application of waste heat recovery to both reheat and primary heating, allowing for a heat reclaim system no longer restricted to seasonal operation."

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."
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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