scholarly journals Performance Characteristics of a Combined Regenerative Ammonia-Water Based Power Generation Cycle Using LNG Cold Energy

2013 ◽  
Vol 24 (6) ◽  
pp. 510-517
Author(s):  
Kyounghoon Kim ◽  
Jaehyeong Oh ◽  
Youngguan Jeong
Keyword(s):  
Power Generation ◽  
Performance Characteristics ◽  
Ammonia Water ◽  
Water Based ◽  
Cold Energy ◽  
Generation Cycle ◽  
Power Generation Cycle

A Combined Power Cycle Using Refuse Incineration and LNG Cold Energy With Use of Regasified LNG

2009 ◽  
Author(s):  
Hamid Mahdavi ◽  
Mosa Meratizaman ◽  
S. Ali Jazayeri
Keyword(s):  
Power Generation ◽  
Parametric Analysis ◽  
Rankine Cycle ◽  
Combined Cycle ◽  
Power Cycle ◽  
Energy Cycle ◽  
Cold Energy ◽  
Generation Cycle ◽  
Power Generation Cycle ◽  
Refuse Incineration

The objectives of this paper are to develop a combined power generation cycle using refuse incineration and LNG cold energy, and to conduct parametric analysis to investigate the effects of key parameters on the thermal and exergy efficiencies. The combined cycle consists of an ammonia–water Rankine cycle with refuse incinerator and a LNG cold energy cycle with use of regasified LNG as the extra fuel in the incinerator. The combined cycle is compared with the conventional steam Rankine cycle.

Comparison of Hybrid Configurations of Power Generation and Refrigeration Cycles Using Ammonia-Water Mixture

2005 ◽  
Author(s):  
Keisuke Takeshita ◽  
Masao Tomizawa ◽  
Akinori Nagashima ◽  
Yoshiharu Amano ◽  
Takumi Hashizume
Keyword(s):  
Power Generation ◽  
Mass Fraction ◽  
Performance Comparison ◽  
Water Mixture ◽  
Ammonia Water ◽  
Generation Cycle ◽  
Hybrid Configuration ◽  
Absorption Refrigerator ◽  
Performance Gains ◽  
Power Generation Cycle

This paper describes performance comparison of two types of hybrid configuration of power generation and refrigeration cycles using ammonia-water mixture by simulation calculation. Difference between two configurations is the ammonia mass fraction of solution from the turbine system (power generation cycle) to the ammonia absorption refrigerator (refrigeration cycle). The newer configuration (configuration 2) supplies higher mass fraction solution to the refrigerator. As a result, both configurations show larger system net power than separate operations when the basic composition (the ammonia mass fraction of the evaporator in the turbine system) is 0.45 kg/kg. The performance gains of configuration 1 and 2 are 13.6% and 13.8%, respectively.

Thermodynamic Analysis of a Combined Power and Water Production System

2010 ◽  
Author(s):  
S. Ehsan Shakib ◽  
Majid Amidpour ◽  
Cyrus Aghanajafi
Keyword(s):  
Power Generation ◽  
Water Cycle ◽  
Performance Ratio ◽  
Water Production ◽  
Exergy Destruction ◽  
Combined System ◽  
Dual Purpose ◽  
Destruction Rate ◽  
Generation Cycle ◽  
Power Generation Cycle

Most of the potable water and electricity are produced by dual purpose plants. Dual-purpose plants are the one that supplies heat for a thermal desalination unit and produces electricity for distribution to the electrical grid. In this paper a power plant is combined with a multi-effect evaporation thermal vapor compression (METVC) system. Compared with the most widely used (Multi Stage Flash) MSF desalination, METVC has more advantages. Then, energy and exergy analysis equations for desalination plant, power generation cycle, heat recovery steam generator and combined power and water cycle are developed and the results are presented. Results show by rising number of effect from 2 to 14, performance ratio, exergy efficiency and specific heat transfer area rise steadily. For combined system, the maximum and minimum values of exergy destruction rate are related to combustion chamber and desalination effects, respectively. Also, with increasing TIT, exergy destruction rate of power generation cycle decreases while the exergy destruction rate of METVC, especially thermo compressor, goes up and fresh water production reduces dramatically.

scholarly journals System of Comprehensive Energy-Efficient Utilization of Associated Petroleum Gas with Reduced Carbon Footprint in the Field Conditions

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4921 ◽  
Author(s):  
Valentin Morenov ◽  
Ekaterina Leusheva ◽  
George Buslaev ◽  
Ove T. Gudmestad
Keyword(s):  
Power Generation ◽  
Carbon Footprint ◽  
High Efficiency ◽  
Energy System ◽  
Gas Analysis ◽  
Energy Potential ◽  
Associated Petroleum Gas ◽  
Power Load ◽  
Generation Cycle ◽  
Power Generation Cycle

This paper considers the issue of associated petroleum gas utilization during hydrocarbon production in remote petroleum fields. Due to the depletion of conventional oil and gas deposits around the globe, production shifts to hard-to-recover resources, such as heavy and high-viscosity oil that requires a greater amount of energy to be recovered. At the same time, large quantities of associated petroleum gas are extracted along with the oil. The gas can be utilized as a fuel for power generation. However, even the application of combined power modes (combined heat and power and combined cooling heat and power) cannot guarantee full utilization of the associated petroleum gas. Analysis of the electrical and heat loads’ graphs of several oil fields revealed that the generated thermal energy could not always be fully used. To improve the efficiency of the fuel’s energy potential conversion, an energy system with a binary power generation cycle was developed, consisting of two power installations—a main gas microturbine and an auxiliary steam turbine unit designed to power the technological objects in accordance with the enterprise’s power load charts. To provide for the most complete utilization of associated petroleum gas, a gas-to-liquid system is introduced, which converts the rest of the gas into synthetic liquid hydrocarbons that are used at the field. Processing of gas into various products also lowers the carbon footprint of the petroleum production. Application of an energy system with a binary power generation cycle makes it possible to achieve an electrical efficiency up to 55%, at the same time maintaining high efficiency of consumers’ energy supply during the year. The utilization of the associated petroleum gas in the developed system can reach 100%.

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