scholarly journals A chemisorption power generation cycle with multi-stage expansion driven by low grade heat

2017 ◽  
Vol 150 ◽  
pp. 956-965 ◽  
Author(s):  
Huashan Bao ◽  
Zhiwei Ma ◽  
Anthony Paul Roskilly
Keyword(s):  
Power Generation ◽  
Low Grade ◽  
Multi Stage ◽  
Generation Cycle ◽  
Low Grade Heat ◽  
Power Generation Cycle

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 Small Scale Power Generation using Low Grade Heat from Solar Pond

2012 ◽  
Vol 49 ◽  
pp. 50-56 ◽  
Author(s):  
Baljit Singh ◽  
J. Gomes ◽  
Lippong Tan ◽  
Abhijit Date ◽  
A. Akbarzadeh
Keyword(s):  
Power Generation ◽  
Small Scale ◽  
Low Grade ◽  
Solar Pond ◽  
Low Grade Heat

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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