Thermoeconomic analysis of a biogas-fueled micro-gas turbine with a bottoming organic Rankine cycle for a sewage sludge and food waste treatment plant in the Republic of Korea

2017 ◽  
Vol 127 ◽  
pp. 963-974 ◽  
Author(s):  
Taehong Sung ◽  
Sunhee Kim ◽  
Kyung Chun Kim
Keyword(s):  
Sewage Sludge ◽  
Gas Turbine ◽  
Food Waste ◽  
Waste Treatment ◽  
Treatment Plant ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Micro Gas Turbine ◽  
Waste Treatment Plant ◽  
The Republic

scholarly journals Properties of Biochar from Anaerobically Digested Food Waste and Its Potential Use in Phosphorus Recovery and Soil Amendment

2018 ◽  
Vol 10 (12) ◽  
pp. 4692 ◽  
Author(s):  
Shakib Alghashm ◽  
Shiying Qian ◽  
Yinfeng Hua ◽  
Jian Wu ◽  
Haitao Zhang ◽  
...  
Keyword(s):  
Food Waste ◽  
Soil Amendment ◽  
Waste Treatment ◽  
Pyrolysis Temperature ◽  
Biogas Production ◽  
Treatment Plant ◽  
Phosphorus Recovery ◽  
Waste Treatment Plant ◽  
Pseudo Second Order ◽  
Biogas Residue

The disposal of a large amount of biogas residue from anaerobically digested food waste is a burden for biogas production. The aim of this work was to investigate biogas residue as a potential feedstock, by preparing biochar at a broad pyrolysis temperature range of 400–900 °C. The properties required for phosphorus recovery and soil amendment application were evaluated. Biogas residue collected from an urban food waste treatment plant was pyrolyzed in a laboratory scale reactor. It was found that by increasing the pyrolysis temperature, the yield of biochar decreased and the pH, electrical conductivity and Brunauer–Emmett–Teller surface area increased. The amount of phosphorus adsorbed onto the biogas residue-derived biochar (BRB) at 900 °C was larger than that of other kinds of biochar. The kinetics of phosphorus (P) adsorption on BRB could be described by the pseudo-second-order equation. The pot experiments showed that the resulting biochar is beneficial for the growth of cabbage. Overall, turning solid residue from the anaerobic digestion of food waste for biogas production into biochar shows good prospects as a means of solving the disposal problem, while creating new markets for food waste biogas residue.

Research on the Combined Cycle of a Biogas Micro Gas Turbine and an Organic Rankine Cycle

2019 ◽  
Vol 13 (5) ◽  
pp. 683-689
Author(s):  
Zheng Jian ◽  
Feng Zheng-Jiang ◽  
Wang Jian ◽  
Wang Yan ◽  
Li Xin-Yi ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Combined Cycle ◽  
Micro Gas Turbine

Micro Combined Plant With Gas Turbine and Organic Cycle

2008 ◽  
Author(s):  
Flavio Caresana ◽  
Gabriele Comodi ◽  
Leonardo Pelagalli ◽  
Sandro Vagni
Keyword(s):  
Gas Turbine ◽  
Thermodynamic Analysis ◽  
Turbine Unit ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Working Fluid ◽  
Gas Turbine Unit ◽  
Principal Characteristics ◽  
Micro Gas Turbine ◽  
System A

In this paper we discuss the usefulness of a bottoming cycle applied to a micro size gas turbine unit to enhance its electric performance. A commercial 100 kWe micro gas turbine is used as a topping system; a basic thermodynamic analysis is performed to define the principal characteristics of viable vapour bottoming cycles. The analysis points to a solution adopting an Organic Rankine Cycle (ORC) with R245fa as working fluid, due both to environmental constrains and to technical criteria.

scholarly journals A Review on Combining Micro Gas Turbines with Organic Rankine Cycles

2019 ◽  
Vol 113 ◽  
pp. 03007
Author(s):  
Gustavo Bonolo de Campos ◽  
Cleverson Bringhenti ◽  
Alberto Traverso ◽  
Jesuino Takachi Tomita
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Low Grade ◽  
Micro Gas Turbine ◽  
Organic Rankine Cycles ◽  
Reliable Design ◽  
General Cost Functions ◽  
Current Energy

Current energy conversion machines such as the micro gas turbine can be improved by harvesting the low-grade energy of the exhaust. A prominent option for such is the organic Rankine cycle due to its relatively efficient and reliable design. This manuscript presents a review on the subject and is the first step toward the design of an organic Rankine cycle bottoming a 100 kWe recuperated gas turbine. After introducing and covering the historical development of the technology, appropriate guidelines for defining the cycle arrangement and selecting the fluid are presented. At last, the viability of the cycle is assessed by assuming an appropriate efficiency value and general cost functions. The organic Rankine is expected to generate an additional 16.6 kWe of power, increasing the electrical efficiency from 30 to 35%. However, the capital cost increase was estimated in 48%.

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