Thermodynamic and thermoeconomic analysis of basic and modified power generation systems fueled by biogas

Gholizadeh, Towhid; Vajdi, Mohammad; Mohammadkhani, Farzad

doi:10.1016/j.enconman.2018.12.011

Cited by 107 publications

(20 citation statements)

References 19 publications

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“…Engineering Equation Solver (EES) is used for the calculations of both energy and exergy efficiencies. While evaluating the thermal modeling, the following assumptions have been made based on the references [38,42,47,48].…”

Section: Thermal Modelingmentioning

confidence: 99%

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Can a Wastewater Treatment Plant Power Itself? Results from a Novel Biokinetic-Thermodynamic Analysis

Erguvan

MacPhee

2021

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The water–energy nexus (WEN) has become increasingly important due to differences in supply and demand of both commodities. At the center of the WEN is wastewater treatment plants (WWTP), which can consume a significant portion of total electricity usage in many developed countries. In this study, a novel multigeneration energy system has been developed to provide an energetically self-sufficient WWTP. This system consists of four major subsystems: an activated sludge process, an anerobic digester, a gas power (Brayton) cycle, and a steam power (Rankine) cycle. Furthermore, a novel secondary compressor has been attached to the Brayton cycle to power aeration in the activated sludge system in order to increase the efficiency of the overall system. The energy and exergy efficiencies have been investigated by varying several parameters in both WWTP and power cycles. The effect of these parameters (biological oxygen demand, dissolved oxygen level, turbine inlet temperature, compression ratio and preheater temperature) on the self-efficiency has also been investigated. It was found here that up to 109% of the wastewater treatment energy demand can be produced using the proposed system. The turbine inlet temperature of the Brayton cycle has the largest effect on self-sufficiency of the system. Energy and exergy efficiencies of the overall system varied from 35.7% to 46.0% and from 30.6% to 33.55%, respectively.

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Section: Thermal Modelingmentioning

confidence: 99%

“…In the literature, the proposed cogeneration energy system is referred to with different names such as integrated biogas-based power generation system [48] and biogas fueled power generation system [47]. In this paper, we refer to the proposed system as cogeneration (cog) power system.…”

Section: Gas Turbine Inlet Temperature (Tit)mentioning

confidence: 99%

Can a Wastewater Treatment Plant Power Itself? Results from a Novel Biokinetic-Thermodynamic Analysis

Erguvan

MacPhee

2021

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“…Any energy-saving program contributes to sustainable development, higher productivity, revenue creation, expense reduction, and improvement of the environment, especially using renewable energies as the main source of power such as biogas, wind, and solar systems [1]. Concerns about the environmental issues about the pollution of the fossil fuels used in engines, power plants, and manufacturing units, need to employ environment-friendly and clean energy resources as well as enhancing the performance of the working systems by active or passive methods [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of solar collectors as a potential source for sintering of ZrB2

et al. 2021

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Sintering of ceramics is an energy-consuming process that needs high temperatures, therefore, in the present work; solar energy is used to produce high temperatures for the sintering aim of different materials. Solar energy concentrators increase the intensity of incident energy to the receiver provides high temperatures. Ultrahigh-temperature ceramics (UHTCs) due to their high melting point can also be a good alternative for receiver materials. In the present work, ZrB2 is introduced as an alternative material for solar receivers which can withstand high temperatures of sintering. The governing equations, including heat radiation and conduction ones are solved numerically using the finite element method. Transient heat transfer in the concentrator-collector system is investigated to check the feasibility of high temperatures needs for sintering at the receiver. The highest temperature of 1680 °C was achieved after 15 minutes at the focal point of the concentrator when the solar heat flux of 6.86 w/mm2 used for the location of the city of Ardabil in Iran. The obtained temperature can be used to sintering of some groups of materials.

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“…Numerical simulation is a reliable method that provides detailed information at any point of the investigated case. The ability of the numerical methods has been verified in various fields of engineering, including biomechanics [11], energy [12][13][14], optics [15] micro, and nanotechnology [16,17].…”

Section: Introductionmentioning

confidence: 99%

A review on the Comsol Multiphysics studies of heat transfer in advanced ceramics

Vajdi

Moghanlou

Sharifianjazi

et al. 2020

jcc

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Thermodynamic and thermoeconomic analysis of basic and modified power generation systems fueled by biogas

Cited by 107 publications

References 19 publications

Can a Wastewater Treatment Plant Power Itself? Results from a Novel Biokinetic-Thermodynamic Analysis

Can a Wastewater Treatment Plant Power Itself? Results from a Novel Biokinetic-Thermodynamic Analysis

Numerical investigation of solar collectors as a potential source for sintering of ZrB2

A review on the Comsol Multiphysics studies of heat transfer in advanced ceramics

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