Article

On the Ground in Japan: Residential Fuel Cells

Last week Kaden Watch, a Japanese Web site for appliance news, reported that Tokyo Gas had delivered its 80,000th Ene Farm residential fuel cell system. This small news item, delivered by a niche media outlet, lifts a critical corner of the decidedly “big-tent” story of Japan’s strategy to develop a hydrogen-based energy economy. How the Ene Farm topic develops is likely to be a major factor in Japan’s ability to sustain its hydrogen vision -- and possibly a determinant of the role ammonia could play within it.

Article

Ammonia-Fueled Gas Turbine Power Generation

Hideaki Kobayashi, professor at the Institute of Fluid Science at Tohoku University in Sendai, Japan, has developed the world’s first technology for direct combustion of ammonia in a gas turbine. The advance was made in cooperation with the National Institute of Advanced Industrial Science and Technology (AIST) under a program led by Norihiko Iki.

Article

On the Ground in Japan

Two talks delivered in December show the tiny steps that allow a country to transition to a sustainable energy economy. The country is Japan. The events hosting the talks were short-format symposia whose evident objective was to draw in business and technical people who might become practically involved in the new energy economy. Both talks highlighted the role to be played by ammonia while also describing competing and complementary technologies.

Paper

Piloting a Combined Heat and Power / Distributed Generation System, Powered by Carbon-Free, Renewable-Based Anhydrous Ammonia

UCLA-STPP is an interdisciplinary science / policy research unit, enjoining faculty in schools of engineering, public health, law, business, and medicine. The two-part mission of UCLA-STPP is to: (1) evaluate the viability of safer, cleaner, greener, more sustainable substitutes for existing hazardous services, processes, systems, and/or technologies, and (2) employ diffusion analysis to identify institutional, policy, and regulatory barriers to the adoption of viable safer substitutes and prescribe policy changes to overcome key barriers. UCLA-STPP has taken leadership in developing and institutionalizing “alternatives analysis” as policy/regulatory tool as a method to evaluate and identify safer, cleaner, greener, more sustainable substitutes.…

Paper

NOx emission analysis and flame stabilization of ammonia-hydrogen-air premixed flames

Based on its well-known merits, ammonia has been gaining special attention as a potential renewable energy carrier which can be replaced in power generation units. One of the major challenges with ammonia as a fuel is NOx emission, which has a complex underlying chemical kinetics. In an earlier chemical kinetics study by the authors, NOx formation sensitivity was thoroughly studied in a wide range of combustion conditions [Nozari & Karabeyoğlu, J.Fuel 2015]. As the next step, premixed ammonia-hydrogen-air flames are studied experimentally in standard temperature and pressure condition. Effects of some major influential parameters on NOx emission levels are investigated:…

Paper

Power Generation and Flame Visualization of Micro Gas Turbine Firing Ammonia or Ammonia-Methane Mixture

A demonstration test with the aim to show the potential of ammonia-fired power plant is planned using a micro gas turbine. 50kW class turbine system firing kerosene is selected as a base model. A standard combustor is replaced to a prototype combustor which enables a bi-fuel supply of kerosene and ammonia gas. Diffusion combustion is employed to the prototype combustor due to its flame stability. 44kW power generation was achieved by 100% heat from ammonia gas. Although NOx concentration in the exhaust gas of ammonia combustion exceeded 500ppm, NOx removal equipment reduced NOx concentration below 10ppm. Over 30kW power generation…

Paper

Using Local Green Energy and Ammonia to Power Gas Turbine Generators

Beginning in the 1950s, a fundamental shift in the way information was electronically expressed and manipulated led to the “digital revolution” that has transformed — is still transforming — information systems and many major industries and that has given rise to the internet, social media, and instant very-low-cost communication (like this website). A good case can be made that a similar “revolution” is beginning — has already begun — to transform the energy systems upon which we all depend. This presentation will address the use of anhydrous (water-free) ammonia, NH3, as a realistic option for making a fundamental shift in…