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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: Cogeneration

CHP


Energy, Exergy or Economy? Figuring the Benefits of CHP

Cogeneration & On-Site Power Production, Jul/Aug 2014, by Jacob Klimstra.
http://www.cospp.com/articles/print/volume-15/issue-4/features/energy-exergy-or-economy-figuring-the-benefits-of-chp.html

"For many readers familiar with the concept of energy balances and tools such as Sankey diagrams, background knowledge of thermodynamics is often lacking. That might not be an issue for a practical user, but such knowledge can be of utmost importance when designing installations and when promoting the benefits of cogeneration for policymakers. In a series of articles, Jacob Klimstra discusses the energy balance of cogeneration installations."

Combined Heat and Power and Clean Distributed Energy Policies

American Council for and Energy-Efficient Economy (ACEEE), July 2, 2014, by Anna Chittum and Neal Elliott. (Free registration required to view full-text of report.)
http://www.aceee.org/policy-brief/combined-heat-and-power-and-clean-distributed-energy-poli

"Combined heat and power (CHP) systems generate electricity and useful thermal energy in a single, integrated system. CHP is not a technology, but a particular way to deploy existing technologies. Heat that is normally wasted in conventional power generation is recovered as useful energy, so CHP systems are more efficient and provide environmental, economic, and energy system infrastructure benefits. However, several barriers impede cost-effective CHP applications, including lack of common interconnection protocols, discriminatory standby rates, and emissions regulations that do not recognize the improved efficiency levels of CHP systems."

Water Utilities Are Starting to Take Their Own Conservation Advice

Governing, Aug. 2014, by Elizabeth Daigneau.
http://www.governing.com/topics/transportation-infrastructure/gov-water-utilities-conservation.html

"Wastewater treatment plants are often the biggest consumers of electricity in their area. Gresham, Ore., and Washington, D.C., are making moves to change that."

Combined Heat and Brewing Power

Rocky Mountain Institute Outlet, July 23, 2014, by Karen Crofton.
http://blog.rmi.org/blog_2014_07_23_combined_heat_and_brewing_power

"What do megajoules have to do with hectoliters? Everything, if you are considering the energy intensity of manufacturing beer. And after a recent tour of the New Belgium Brewing Company in Fort Collins [CO], I’ve learned that when it comes to a commitment to renewable energy and energy efficiency in beer brewing, Colorado’s thriving craft brewing scene is a great example."

More than Heat and Power: Cogeneration with New Gas Engine Technology

Cogeneration & On-Site Power Production, May/June 2014, by Michael Devine.
http://www.cospp.com/articles/print/volume-15/issue-3/features/more-than-heat-and-power.html

"Cogeneration today goes well beyond simultaneously generating electricity and hot water or steam. Today's usable engine outputs can also include heated air, chilled water produced by absorption chillers, and carbon dioxide from purified exhaust. In other words, a single engine-generator can produce two, three or four useful outputs at once. With today's generating technologies, electrical efficiencies up to 45% and total resource efficiencies upwards of 90% are achievable. And cogeneration systems do not necessarily need to operate full-time at full load to be cost-effective–low-cost and low-intensity configurations can bring attractive returns in many settings."

Micro-CHP: A Tool for Increased Market Access

Cogeneration & On-Site Power Production, May/June 2014, by Jan de Wit, Mads Moeller Melchiors and Laila Grahl Madsen.

"...present perspectives for increased CHP market penetration, as well as reduced primary fuel consumption and carbon savings based on one year's field testing of fuel cell-based micro-CHP units."

High Solids Anaerobic Digestion + Composting in San Jose

BioCycle, Mar./Apr. 2014, by Nora Goldstein.
http://www.biocycle.net/2014/03/28/high-solids-anaerobic-digestion-composting-in-san-jose/

"A facility that marries dry anaerobic digestion and composting under the same roof to process the organic fraction of municipal solid waste opened for business late last year at the south end of the San Francisco Bay in San Jose, California. Zero Waste Energy Development Company (ZWEDC) — developer and owner of the 90,000 tons/year facility — recognized the benefits of colocation to enable extraction of the energy value of the food waste, followed by composting of the digestate. The plant, comprised of 16 high-solids dry fermentation digesters and four in-vessel composting tunnels, began receiving organics from the commercial sector in San Jose in mid-December."

Fuel Cell CHP Passes the Point of No Return

Cogeneration & On-Site Power Production, Mar.-Apr. 2014.
http://www.cospp.com/articles/print/volume-15/issue-2/features/fuel-cell-chp-passes-the-point-of-no-return.html

"The use of fuel cell technology in combined heat and power applications is commonly viewed as being at an early stage of development. However, Arjen de Jong and Martin Horstink argue that significant advances in the last 12 months mean this is no longer the case." 

Optimized Solutions for Industrial Cogen Units

Cogeneration & On-Site Power Production, Jan.-Feb. 2014.
http://www.cospp.com/articles/print/volume-15/issue-1/features/optimized-solutions-for-industrial-cogen-units.html

"CHP [Combined Heat & Power] installations are often associated with industrial process and so any failure at the plant can be a commercial disaster for the owners if they have to cease production as a result. However, with a more sophisticated set up it is possible to continue to operate seamlessly, even in the event of an unexpected gas turbine trip, explains Stef Verhagen of NEM Energy bv."


Making Power Multitask With CHP/CCHP

Business Energy, Mar.-Apr. 2014, by Carol Brzozowski.
http://www.businessenergy.net/DE/Editorial/Making_Power_
Multitask_With_CHPCCHP_24940.aspx


"Cogeneration and trigeneration: industry experts say the time is ripe—again—for the increased use of these technologies. Cogeneration, or combined heat and power (CHP), uses a heat engine or power station to generate electricity and heat for onsite uses. Trigeneration, or combined cooling, heat, and power (CCHP), is the simultaneous generation of electricity and useful heating and cooling as a result of the combustion of fuel or the action of a solar heat collector."
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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

Archives of the weekly Energy Newsbriefs, from Oct. 2012 – Jan. 6, 2014, may be found on the WSU Energy Library web page.