Research on an integrated power and freshwater generation system from natural gas energy and geothermal sources

Desalination ◽  
2022 ◽  
Vol 525 ◽  
pp. 115494
Author(s):  
Zhang Yao ◽  
Zhang Yuxing ◽  
Kong Yaqian ◽  
Behnam Sobhani
2021 ◽  
Vol 2005 (1) ◽  
pp. 012142
Author(s):  
Zhan Zhixing ◽  
Mao Yanqin ◽  
Wang Xiaoyue ◽  
Li Chaojie ◽  
Cai Liang

Author(s):  
Xiaosong Zhang ◽  
Hongguang Jin

This paper proposes a multi-input chemical looping hydrogen generation system (MCLH), which generates hydrogen, through the use of natural gas and coal. In this system, a new type of oven, burning coal instead of natural gas as heating resource for hydrogen production reaction, is adopted. Coal can be converted to hydrogen indirectly without gasification. Benefits from the chemical looping process, the CO2 can be captured without energy penalty. With the same inputs of fuel, the new system can product about 16% more hydrogen than that of individual systems. As a result, the energy consumption of the hydrogen production is about 165J/mol-H2. Based on the exergy analyses, it is disclosed that the integration of synthetic utilization of natural gas and coal plays a significant role in reducing the exergy destruction of the MCLH system. The promising results obtained may lead to a clean coal technology that will utilize natural gas and coal more efficiently and economically.


Author(s):  
M. E. Douglas ◽  
Michael K. Sahm ◽  
William J. Wepfer

Methodologies have been developed to aid in selection of a candidate distributed generation system for use in meeting a building's electrical demand. The systems studied are comprised of a combination of microturbines and/or natural gas reciprocating engines. These systems could also be used as prime movers in a combined heat and power application. Economic optimizations have been performed in order to identify distributed generation/prime mover combinations and operating strategies that yield the lowest electrical generation cost. These optimizations take into account a finite set of operating scenarios and equipment combinations. In addition to the economic optimizations, a direct comparison of customer design considerations has been made, highlighting the advantages and disadvantages of both microturbines and reciprocating engines. In this study, the optimal system for a 9290 m2 (100,000 ft2) office building in New York City at today's natural gas prices was determined to be a combination of natural gas reciprocating engines and microturbines. This system yielded a 5% reduction in generation costs over other cases examined including all homogeneous composition systems. With an increase in natural gas prices, the optimal case changes to be comprised solely of natural gas reciprocating engines. It has been shown that many factors are important to selection of optimal equipment including the specific end use load profile, cost of fuel, and system operating strategy.


2014 ◽  
Vol 2014.20 (0) ◽  
pp. _10808-1_-_10808-2_
Author(s):  
Shohei KIMURA ◽  
Ryoya AKIMOTO ◽  
Juan C GONZALEZ PALENCIA ◽  
Mikiya ARAKI ◽  
Seiichi SHIGA

2009 ◽  
Vol 86 (10) ◽  
pp. 2088-2095 ◽  
Author(s):  
Yu Qian ◽  
Jingyao Liu ◽  
Zhixian Huang ◽  
Andrzej Kraslawski ◽  
Jian Cui ◽  
...  

Author(s):  
H. Griepentrog ◽  
G. Tsatsaronis ◽  
T. Morosuk

Natural gas is one of the most important primary energy sources. It is expected to account for about 30% of total electricity generation by 2020 compared with 17% in 2000. Liquefied natural gas (LNG) is expected to have a large share in this expansion of use of natural gas. In the last years the total cost of LNG technology has decreased mainly due to improvements in the liquefaction process. The paper discusses some novel, gas-turbine-based concepts for combining LNG regasification with electricity generation. A comparative exergetic evaluation of the concepts is presented.


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