Waste heat recovery from a landfill gas-fired power plant

Gewald, D.; Siokos, Konstantinos; Karellas, Sotiriοs; Spliethoff, Hartmut

doi:10.1016/j.rser.2012.01.036

Cited by 86 publications

(30 citation statements)

References 20 publications

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“…Si la porción de metano es lo suficientemente alta para la producción de electricidad, se puede utilizar motores de combustión interna [9], que son altamente eficientes, a más de tener una rápida respuesta a la carga [10]. Los estudios de cantidad y calidad del gas, permiten determinar la potencia de los equipos, y el futuro potencial que se pueda extraer y las posibilidades de ampliación.…”

Section: Energía Proveniente De Los Rellenos Sanitariosunclassified

“…Otra etapa que se puede añadir es el aprovechamiento del gas producto del proceso de combustión, que es utilizado como energía térmica [10], para calentamiento de agua o para la operación de los evaporadores en el tratamiento biológico. Experiencias indican que la implementación de esta nueva fase puede aumentar en 35 % la eficiencia global del sistema así como disminuye los costos hasta en un 6 %.…”

Section: Características Generales De Un Proyecto De Generación Eléctunclassified

“…Estos han optado por una gestión integrada enmarcada en la prevención, reciclaje, tratamiento biológico, tratamiento térmico o la disposición en rellenos sanitarios [9][10][11].…”

Section: Introductionunclassified

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Fomento Del Metabolismo Energético Circular Mediante Generación Eléctrica Proveniente De Rellenos Sanitarios

Barragán

Arias

Terrados-Cepeda

2016

ings

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Forma sugerida de citación: Barragán, E.; Arias, P. y Terrados, J. (2016). «Fomento del metabolismo energético circular mediante generación eléctrica proveniente de rellenos sanitarios: Estudio de caso, Cuenca, Ecuador». Ingenius. N.• 16, (Julio-Diciembre). pp. 36-42. ISSN: 1390-650X. Resumen AbstractLa provisión de recursos y energía para las ciudades es un reto para los planificadores urbanos. Más del 50 % de la población está concentrada en las ciudades y se espera que esta tendencia se incremente. Bajo el enfoque del metabolismo urbano, a las ciudades se las puede considerar como un ecosistema artificial, que requiere de materiales, nutrientes, agua y energía. La obtención de estos recursos ejerce una enorme presión sobre el medioambiente, no solo por el requerimiento de materia prima, sino por la generación de emisiones, residuos y efluentes. Por ello se plantea nuevas formas de recuperar los recursos, cambiando el modelo urbano desde un metabolismo lineal a uno circular. Una de las tecnologías que reúne estos requisitos es utilizar el biogás de los rellenos sanitarios para producir energía eléctrica. De esta manera, se disminuye la importación de energía hacia la ciudad y se reducen las emisiones de gases de efecto invernadero. Se focaliza el análisis al Relleno Sanitario de Pichacay, ubicado en la ciudad de Cuenca, Ecuador.The provision of resource and energy for the cities is the goal for the urban planning team. 50% or more of the people is living on the metropolitan area of the cities and this trend is expected to increase. Under the urban metabolism approach to cities they can be considered as an artificial ecosystem that requires materials, nutrients, water and energy. Obtaining these resources causes enormous pressure on the environment, not only by the requirements of raw material but by production of contaminants. This paper propose a new behavior of recovering resources arises, changing the urban model from a linear to a circular metabolism. One technology that meets these requirements is to use biogas from landfills to generation of electricity. Reducing purchasing of energy import to the city and emissions of greenhouse gases are reduced too. The analysis of Pichacay Landfill, located in the city of Cuenca, Ecuador, was prepared.Palabras clave: metabolismo urbano, energías renovables, biogás, sostenibilidad energética.

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Section: Energía Proveniente De Los Rellenos Sanitariosunclassified

Section: Características Generales De Un Proyecto De Generación Eléctunclassified

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Fomento Del Metabolismo Energético Circular Mediante Generación Eléctrica Proveniente De Rellenos Sanitarios

Barragán

Arias

Terrados-Cepeda

2016

ings

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“…This power range corresponds to the biogas yields associated with the waste of dairy farm herds of between 100 and 1000 dairy cows. The overall power generation efficiency can be increased further by using the heat in the high temperature flue gases of the gas engine of the CHP system to generate additional power through the use of Organic Rankine Cycle (ORC) power systems [18].…”

Section: Introductionmentioning

confidence: 99%

Potential for Energy Production from Farm Wastes Using Anaerobic Digestion in the UK: An Economic Comparison of Different Size Plants

et al. 2017

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Anaerobic digestion (AD) plants enable renewable fuel, heat, and electricity production, with their efficiency and capital cost strongly dependent on their installed capacity. In this work, the technical and economic feasibility of different scale AD combined heat and power (CHP) plants was analyzed. Process configurations involving the use of waste produced in different farms as feedstock for a centralized AD plant were assessed too. The results show that the levelized cost of electricity are lower for large-scale plants due to the use of more efficient conversion devices and their lower capital cost per unit of electricity produced. The levelized cost of electricity was estimated to be 4.3 p/kWh e for AD plants processing the waste of 125 dairy cow sized herds compared to 1.9 p/kWh e for AD plants processing waste of 1000 dairy cow sized herds. The techno-economic feasibility of the installation of CO 2 capture units in centralized AD-CHP plants was also undertaken. The conducted research demonstrated that negative CO 2 emission AD power generation plants could be economically viable with currently paid feed-in tariffs in the UK.

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“…This is not only for safety reasons, but also to stabilize the operation of the ORC system under transient operational conditions. Gewald [26] applied an ORC with thermal-oil cycle to recover the waste heat of several large stationary engines. With the thermal-oil cycle, the waste heat of different engines can conveniently be combined into one ORC system.…”

Section: Introductionmentioning

confidence: 99%

Part-Load Performance Prediction and Operation Strategy Design of Organic Rankine Cycles with a Medium Cycle Used for Recovering Waste Heat from Gaseous Fuel Engines

2016

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Abstract:The Organic Rankine Cycle (ORC) is regarded as a suitable way to recover waste heat from gaseous fuel internal combustion engines. As waste heat recovery systems (WHRS) have always been designed based on rated working conditions, while engines often work under part-load conditions, it is quite significant to analyze the part-load performance and corresponding operation strategy of ORC systems. This paper presents a dynamic model of ORC with a medium cycle used for a large gaseous fuel engine and analyzes the effect of adjustable parameters on the system performance, giving effective control directions under various conditions. The results indicate that the intermediary fluid mass flow rate has nearly no effect on the output power and thermal efficiency of the ORC, while the mass flow rate of working fluid has a great effect on them. In order to get a better system performance under different working conditions, the system should be operated with the working fluid mass flow rate as large as possible, but with a slight degree of superheating. Then, with the control of constant superheat degree at the end of the heating process, the performance of the combined system that consists of ORC and the engine at steady state under seven typical working conditions is also analyzed. The results indicate that the energy-saving effect of WHRS becomes worse and worse as the working condition decreases. Especially at 40% working condition the WHRS nearly has no energy-saving effect anymore.

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Waste heat recovery from a landfill gas-fired power plant

Cited by 86 publications

References 20 publications

Fomento Del Metabolismo Energético Circular Mediante Generación Eléctrica Proveniente De Rellenos Sanitarios

Fomento Del Metabolismo Energético Circular Mediante Generación Eléctrica Proveniente De Rellenos Sanitarios

Potential for Energy Production from Farm Wastes Using Anaerobic Digestion in the UK: An Economic Comparison of Different Size Plants

Part-Load Performance Prediction and Operation Strategy Design of Organic Rankine Cycles with a Medium Cycle Used for Recovering Waste Heat from Gaseous Fuel Engines

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