Energetic and exergetic performance analyses of a combined heat and power plant with absorption inlet cooling and evaporative aftercooling

Khaliq, Abdul; Dinçer, İbrahim

doi:10.1016/j.energy.2011.02.007

Cited by 46 publications

(8 citation statements)

References 21 publications

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“…According to Assumption 1, no heating is required, so H is 0. The simplified ratio, which coincides with the heat‐to‐electricity ratio commonly used in current studies , is

R = \frac{C}{P}

…”

Section: Evaluation Criteriasupporting

confidence: 63%

Multiple effects of energy storage units on combined cooling, heating and power (CCHP) systems

Zeng

Shi

2016

Int. J. Energy Res.

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Summary Albeit numerous studies discussing manifold issues of combined cooling, heating and power (CCHP) systems, there is still lack of theoretical studies indicating to what extent the energy mismatch and the deviating working conditions affect the CCHP performance, absence of reports systematically summarizing the multiple effects of energy saving units (ESUs), and deficiency of research quantifying the benefits from ESUs to energy savings. The shortage of such studies will confuse some CCHP designers when a CCHP system is designed. Therefore, in this research, theoretical discussions have been undertaken about the energy mismatch issue between CCHP systems and their users as well as the multiple effects of ESUs on CCHP systems. An improved calculational method of energy storage rate (ESR) has been adopted to evaluate the energy savings performance of CCHP systems. Two general heat‐to‐electricity ratios (Ruser for CCHP users and RCCHP for CCHP systems) have been used to quantify the energy mismatch between CCHP systems and their users. In the regime of ‘priority of providing cooling’, the ESR reaches its maximum when Ruser is equal to RCCHP. Otherwise, the ESR tends to decrease rapidly, especially when the electrical demand must be supplemented from the grid. Furthermore, when the CCHP system produces more electricity than required, the payment mode of extra electricity from the CCHP system will significantly affect the ESR. Therefore, it is imperative to reach an international consensus regarding the dispose of extra CCHP products. The theoretical analyses also corroborate the advantages of incorporating an ESU into a CCHP system. The ESU enables the CCHP system components to operate at their optimal working conditions. Meanwhile, the power generation unit and the absorption refrigerator capacities can then be reduced. Moreover, the ESU also promotes the productivity of electricity and ensures an undiminished ESR regardless of what extra electricity payment mode is adopted. Copyright © 2016 John Wiley & Sons, Ltd.

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“…According to Assumption 1, no heating is required, so H is 0. The simplified ratio, which coincides with the heat‐to‐electricity ratio commonly used in current studies , is

R = \frac{C}{P}

…”

Section: Evaluation Criteriasupporting

confidence: 63%

Multiple effects of energy storage units on combined cooling, heating and power (CCHP) systems

Zeng

Shi

2016

Int. J. Energy Res.

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“…In their analysis, they used a constant heat capacity at constant pressure while calculating the enthalpy and exergy of the working gas. Khaliq et al [8] studied, by the energy and exergy method, the influence of compressor intake air cooling on energy and exergy efficiency of a gas turbine cycle. They also examined exergy destruction rate in the power plant components as well as the effect of the pressure ratio and turbine inlet temperature on the energy and exergy efficiency of the cycle.…”

Section: Introductionmentioning

confidence: 99%

Analytical model-based energy and exergy analysis of a gas microturbine at part-load operation

Malinowski

2013

Applied Thermal Engineering

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“…Khaliq and Dincer carried out the energetic and exergetic efficiencies of a gas turbine cogeneration plant with inlet air cooling. They concluded that system performance increased via using the cooling processes [13]. Athari et al performed energy, exergy and exergoeconomic analyses of the integration of biomass gasification with a gas turbine plant incorporating fog cooling.…”

Section: Introductionmentioning

confidence: 99%

Comparative and Exergetic Study of a Gas Turbine System with Inlet Air Cooling

Di̇rek

Mert

2018

Teh. vjesn.

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The efficiency of the combined cycle is significantly influenced by the temperature, pressure and humidity of the ambient air. The aim of this study is to investigate the influence of the inlet air cooling system (fogging cooling system) on the gas turbine performance by energy and exergy analyses. Energy and exergy analysis was carried out for nine cases based on the operation data of a gas turbine. Performance parameters include fuel consumption, specific fuel consumption, thermal efficiency, net power output, exergetic efficiency and exergy destruction rates of the components for the cases. It is concluded that the net power output of the gas-turbine system increases at lower inlet air temperatures, and based on the mean values, exergetic efficiency and exergy destruction ratio were found as 37.35% and 33.02%, respectively.

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Energetic and exergetic performance analyses of a combined heat and power plant with absorption inlet cooling and evaporative aftercooling

Cited by 46 publications

References 21 publications

Multiple effects of energy storage units on combined cooling, heating and power (CCHP) systems

Multiple effects of energy storage units on combined cooling, heating and power (CCHP) systems

Analytical model-based energy and exergy analysis of a gas microturbine at part-load operation

Comparative and Exergetic Study of a Gas Turbine System with Inlet Air Cooling

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