Альтернативная энергетика и экология (ISJAEE)

Расширенный поиск
Доступ открыт Открытый доступ  Доступ закрыт Доступ платный или только для Подписчиков

Генерирование энергии и снижение уровня загрязнений окружающей среды с помощью термоэлектрического преобразователя на основе щелочных металлов

Полный текст:


Alkali Metal Thermo Electric Convertor (AMTEC) is a device for directly converting heat to electricity with high efficiency. It uses infrared radiation to releases electrons from an alkali metal (as the name suggests). This metal in the form of vapor acts as the working material. In this case sodium is chosen as the working material for its appropriate properties for this task. AMTEC operates as a thermally regenerative electrochemical cell by expanding alkali metal vapors through the pressure differential across an electrolyte membrane. AMTEC laboratory devices have achieved efficiencies as high as 19% and system designs indicate that efficiencies up to 40% or more may be possible. Small AMTEC systems have shown 27% cell and 23% system efficiencies. AMTEC requires heat energy input at modest temperatures. It can, therefore, recycle heat rejected from other devices. This adaptability makes AMTEC very attractive for many environmentally friendly potential applications. Utilization and recycling of waste energy have been the mainstay along with the conservation of energy these days. AMTEC, with the versatility of the kind of energy it uses, is capable to handle this problem by directly utilizing the waste energy of a fuel cell as an input for an energy conversion device. This concept may be extended to any kind of waste heat, from any source in any form to address the environmental aspect. The long life and efficiency of AMTEC are two important issues that presently researchers are concerned. The choice of materials and geometry of its sensitive components will be discussed with respect to those issues. We have also discussed AMTEC’s environmental aspect by cascading it with some device rejecting heat to its surrounding as one unit. AMTEC utilizes this waste heat as its input energy by this technique. On the one hand, this provides the efficient use of the waste energy preventing its dissipation in the region around; on the other hand, it suppresses all the more the thermal pollution.

Об авторе

M. A. Lodhi
Техасский технологический университет

Список литературы

1. Robert C. Svedberg, Daniel A. Schaupner and A. John Appleby, “Accelerated Testing for Extended Service AMTEC Cells,” Proc. 32nd Intersociety, Energy Conversion Engineering Conference1997 - IECEC -1997, 1230-1235.

2. M. A. K. Lodhi and Justin B. Briggs, “Temperature Effect on Lifetimes of AMTEC electrodes,” J. Power Sources, 168, (2007) 537-545.

3. Sun-Dong Kim, Se-young Kim, Jong Hoo Joo and Sang-Kuk Woo, “Microstructure and Electrical Conductivity of Mo/TiN Composite Powder for Alkali Metal Thermal to Electric Converter Electrode,” Ceramic International, 40, (2014) 3847-3853.

4. M. A. K. Lodhi and A. Daloglu, “Effect on geometrical variations on AMTEC cell heat losses,” J. Power Sources, 91, (2000) 99-106.

5. M. A. K. Lodhi, P. Vijayaraghavan and A. Daloglu, Time-dependent BASE performance and Power Degradation in AMTEC, J. Power Sources, 93, (2001) 41-49.

6. R. Mital et al, Performance Evaluation of Gas Fired AMTEC Power System, Advanced Modular Power System, USA, 1998, pp. 1-2.

7. M. A. K. Lodhi, Mike Schuller, P. Housgen, Mathematical Modeling for Thermionic-AMTEC Cascade System, STAIF Proceedings, AIP, 1996, pp. 1285-1290.

8. John M. Merrill, Michael Schuller and Lianmin Huang, "Vacuum Testing of High Efficiency Multi-Base Tube AMTEC Cells: February 1997-October 1997," Proceedings of the Fifteenth Symposium on Space and Nuclear Power Propulsion, Third Space Technology and Applications International Forum, held in Albuquerque, NM, January 25-29, 1998.

9. M. A. K. Lodhi, “Alkali Metal Thermal to Electric Energy Convertor,” Encyclopedia of Electrochemical Power Sources, Vol. 4, (2009) 334-346.

10. J. Tournieret al. An Analytical Model for Liquid-Anode and Vapor-Anode Converters, STAIF Proceeding, AIP, 1997, pp. 1543-1552.

11. Munawar Iqbal, M. A. K. Lodhi, Zahid Majeed and Dimitri Batani, “Electrostatic focusing of directly heated linear filament gun using EGUN,” Nucl. Instruments and Methods in Physics Research A, 644, (2011)1-4.

12. Munawar Iqbal, Abdul Wasy, Dimitry Batani, Haris Rashid and M. A. K. Lodhi, “Design modification in rotor blade of turbo molecular pump. Instruments and Methods in Physics Research A, 678, (2012)88-90.

13. M. A. K. Lodhi and V. R. Malka, Optimization of the TIEC/AMTEC Cascade Cell for High Efficiency, J. Power Sources, 96, (2001) 586-691.

14. M. A. K. Lodhi and A. Mustafa, Use of Waste Heat of TIEC as the Power Source of AMTEC, J. Power Sources, 158, (2006) 740-746.

Для цитирования:

Lodhi M.A. Генерирование энергии и снижение уровня загрязнений окружающей среды с помощью термоэлектрического преобразователя на основе щелочных металлов. Альтернативная энергетика и экология (ISJAEE). 2014;(21):43-49.

For citation:

Lodhi M.A. Power Generation and Pollution Suppression by Alkali Metal Thermo Electric Convertor (AMTEC). Alternative Energy and Ecology (ISJAEE). 2014;(21):43-49. (In Russ.)

Просмотров: 122

ISSN 1608-8298 (Print)