Power Generation from Condenser Waste Heat in Coal-fired Thermal Power Plant Using Kalina Cycle

Khankari, Goutam; Munda, Jagannath; Karmakar, Sujit

doi:10.1016/j.egypro.2016.11.230

Cited by 21 publications

(7 citation statements)

References 8 publications

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“…The performance map (see Figure 6a,b) shows that cooling water temperature (CW) strongly influences ACS performance. Most of the time, this low-grade heat is dissipated to the environment but it could be used for some industrial processes as well [32]. The most commonly used heat rejection device is a cooling tower, which achieves cooling through the evaporation of water.…”

Section: Cooling Towermentioning

confidence: 99%

Energetic, Economic and Environmental (3E) Assessment and Design of Solar-Powered HVAC Systems in Pakistan

et al. 2020

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Rapid urbanization, global warming and enhanced quality of life have significantly increased the demand of indoor thermal comfort and air conditioning systems are not a luxury anymore, but a necessity. In order to fulfil this need, it is imperative to develop affordable and environmentally friendly cooling solutions for buildings. In this work, the 3E performance (energetic, economic and environmental) of electrically driven water-cooled vapour compression systems and thermally (solar) driven vapour absorption cooling systems are evaluated and the parameters affecting the performance of solar-driven vapour absorption systems are investigated. The energy simulation software TRNSYS is used to simulate the performance of both systems in order to fulfil the cooling needs of an industrial manufacturing building for the typical climate conditions for Lahore, Pakistan. Primary energy saving, initial investment, operational cost, and carbon footprint indices are used to analyse the performance of both systems. In addition, a parametric code is written in Python and linked with TRNSYS to perform a parametric study to investigate the effects of various parameters such as solar field size, storage tank volume, optimum annual and monthly collector angles, and flow rate in the solar field on the solar-driven vapour absorption chiller performance. The results reveal that around 5% more energy can be absorbed per collector surface area by changing the solar tilt angle on a monthly basis compared to one fixed angle. The analysis shows that electrically driven vapour compression-based cooling systems have much higher running cost and are potentially hazardous for the environment but have lower capital costs. On the other hand, solar thermal systems have lower running costs and emissions but require further reductions in the capital costs or government subsidies to make them viable.

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Section: Cooling Towermentioning

confidence: 99%

Energetic, Economic and Environmental (3E) Assessment and Design of Solar-Powered HVAC Systems in Pakistan

et al. 2020

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“…In the 1980s, Alexander I. Kalina proposed a power cycle system using ammonia-water mixture as working fluid to utilize low-grade heat energy, and named it the Kalina cycle (Kalina, 1982;Kalina, 1983;Kalina, 1984). Different kinds of low-grade heat sources can be used in the Kalina cycle (Prananto et al, 2018;Wang J. et al, 2013;Cao, Wang and Dai, 2014;Khankari, Munda and Karmakar, 2016). The Kalina cycle can actually be regarded as an improved Rankine cycle.…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of KCS (Kalina Cycle System) 34 by Replacing Throttle Valve With Single-Screw Expander

Zhang

2021

Front. Energy Res.

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In order to recover the energy loss due to the throttling in the path of ammonia-lean solution in the Kalina Cycle System (KCS) 34, two redesigned cycles, in which single-screw expanders that can perform two-phase expansion are used to replace the throttle valve, are proposed in this paper. The results show that the thermal efficiency and net work of two redesigned cycles are higher than those of the original KCS 34. With the concentration increase of ammonia-water mixture, the work produced by the single-screw expander B in two redesigned cycles gradually decreases, and the difference between the work produced in two redesigned cycles also gradually decreases. The original KCS 34 and two redesigned cycles have high exergy efficiency. The highest cycle exergy efficiency of 56.59% can be obtained in the II-redesigned cycle when the evaporation pressure is 3.0 MPa and ammonia-water concentration is 0.75.

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“…El desarrollo y el avance de la humanidad relacionados con nuevas tecnologías ha permitido la conformación de una estructura industrial potente y arraigada, cuya ideología se dirige a la optimización de los procesos industriales enfocados en el aumento de la productividad [1][2]. En el campo de la ingeniería, estos avances se han visto reflejados en mejoras de dispositivos de combustión [3], dispositivos de intercambio de calor y de flujo [4][5][6]. Para ello ha sido necesario crear maquinaria y equipos encargados de convertir la energía que se suministra en trabajo, monitoreando y controlando sus variables de desempeño as través de la instrumentación adecuada [7][8][9].…”

Section: Introductionunclassified

Desarrollo de una metodología para la predicción de curvas características en bombas periféricas.

Valencia

Peñaloza

Forero

2020

AiBi Revista de Investigación, Administración e Ingeniería

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Las bombas rotodinámicas han presentado un desarrollo muy notable en los últimos años; debido a esto, su implementación se ha diversificado ampliamente en aplicaciones industriales y domiciliarias. La modificación de los parámetros de operación que definen las características de la bomba regenerativa afecta directamente su eficiencia. Por otro lado, las curvas características que determinan el comportamiento hidráulico de una bomba son utilizadas para definir el punto de operación y escoger una bomba adecuada para las condiciones de funcionamiento de un sistema hidráulico. En este artículo, se presenta una metodología para ajustar la curva teórica de una bomba rotodinámica periférica utilizando factores que influyen en su desempeño considerando que limitaciones físicas que se presentan durante su operación afectan la precisión en la descripción del fenómeno. La ecuación de Euler es utilizada para determinar un conjunto de correlaciones que describen el comportamiento real de la bomba periférica tomando en cuenta la velocidad absoluta del alabe y la componente periférica de la velocidad del fluido que interactúa con el rodete; luego, los datos generados son utilizados para comparar la ecuación de la velocidad del flujo definida con la caracterización geométrica de una bomba regenerativa disponible en el mercado. Por último, se desarrolló una modificación en la ecuación teórica de Euler para predecir la curva real de la bomba regenerativa alcanzando un porcentaje de error menor al 5%.

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Power Generation from Condenser Waste Heat in Coal-fired Thermal Power Plant Using Kalina Cycle

Cited by 21 publications

References 8 publications

Energetic, Economic and Environmental (3E) Assessment and Design of Solar-Powered HVAC Systems in Pakistan

Energetic, Economic and Environmental (3E) Assessment and Design of Solar-Powered HVAC Systems in Pakistan

Performance Improvement of KCS (Kalina Cycle System) 34 by Replacing Throttle Valve With Single-Screw Expander

Desarrollo de una metodología para la predicción de curvas características en bombas periféricas.

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