SCALING-UP A BIOMASS FIRED MICRO-CHP ORC FOR BETTER PERFORMANCE TOWARDS COMMERCIALIZATION

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00361921" target="_blank" >RIV/68407700:21220/21:00361921 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/21:00354681 RIV/68407700:21720/21:00354681 RIV/68407700:21720/21:00361921

Výsledek na webu

<a href="https://www.scopus.com/record/display.uri?eid=2-s2.0-85143444502&origin=resultslist&sort=plf-f" target="_blank" >https://www.scopus.com/record/display.uri?eid=2-s2.0-85143444502&origin=resultslist&sort=plf-f</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

SCALING-UP A BIOMASS FIRED MICRO-CHP ORC FOR BETTER PERFORMANCE TOWARDS COMMERCIALIZATION

Popis výsledku v původním jazyce

Microcogeneration utilizing Organic Rankine cycle technology is seen as a technology of vast potential, but commercialization attempts of many systems have shown how challenging it is to transform laboratory results into competitive products. Throughout the development, the authors’ collective focus on cogeneration from biomass, including very low grade one, for which organic Rankine cycle power systems appear as a suitable choice. In the past, at the Czech Technical University, the authors developed a 50 kWth 2 kWe unit that has undergone an on-site pilot installation. The economic parameters were however for many other applications prohibitive, especially with respect to the new legal requirements for biomass combustion. Therefore, in order to improve the economic performance, the system has been scaled up to 120 kWth and 6.2 kWe. This manuscript discusses the process of scaling up, designing, assembling and operating the upscaled combined heat and power unit. It includes modifications of previously applied technologies, especially regarding the boiler, an in house designed rotary vane expander and the overall system configuration. Furthermore, the authors present a comparison of the operational parameters of the new 6.2 kWe unit with the previous smaller 2 kWe unit, as well as a comparison of the implemented rotary vane expanders as a specific feature of the design. The comparison is performed on several thousand hours of experimental data for both units. From the total net combined heat and power production efficiency standpoint, the larger unit exceeds the former one by five percentage points, reaching 89%, even though the expander performance is slightly poorer with a nominal isentropic efficiency of 56%. However, the economic performance of the upscaled unit excels in comparison with the smaller one. Economic evaluation with a reference 120 kW biomass boiler concludes that an increase of the capital cost of the boiler by one third justifies the investment into the ORC CHP module. 2021, Knowledge Center on Organic Rankine Cycle Technology (KCORC). All Rights Reserved.

Název v anglickém jazyce

SCALING-UP A BIOMASS FIRED MICRO-CHP ORC FOR BETTER PERFORMANCE TOWARDS COMMERCIALIZATION

Popis výsledku anglicky

Microcogeneration utilizing Organic Rankine cycle technology is seen as a technology of vast potential, but commercialization attempts of many systems have shown how challenging it is to transform laboratory results into competitive products. Throughout the development, the authors’ collective focus on cogeneration from biomass, including very low grade one, for which organic Rankine cycle power systems appear as a suitable choice. In the past, at the Czech Technical University, the authors developed a 50 kWth 2 kWe unit that has undergone an on-site pilot installation. The economic parameters were however for many other applications prohibitive, especially with respect to the new legal requirements for biomass combustion. Therefore, in order to improve the economic performance, the system has been scaled up to 120 kWth and 6.2 kWe. This manuscript discusses the process of scaling up, designing, assembling and operating the upscaled combined heat and power unit. It includes modifications of previously applied technologies, especially regarding the boiler, an in house designed rotary vane expander and the overall system configuration. Furthermore, the authors present a comparison of the operational parameters of the new 6.2 kWe unit with the previous smaller 2 kWe unit, as well as a comparison of the implemented rotary vane expanders as a specific feature of the design. The comparison is performed on several thousand hours of experimental data for both units. From the total net combined heat and power production efficiency standpoint, the larger unit exceeds the former one by five percentage points, reaching 89%, even though the expander performance is slightly poorer with a nominal isentropic efficiency of 56%. However, the economic performance of the upscaled unit excels in comparison with the smaller one. Economic evaluation with a reference 120 kW biomass boiler concludes that an increase of the capital cost of the boiler by one third justifies the investment into the ORC CHP module. 2021, Knowledge Center on Organic Rankine Cycle Technology (KCORC). All Rights Reserved.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/TK01020061" target="_blank" >TK01020061: Kogenerační ORC jednotka o tepelném výkonu 120 kW na dřevní štěpku v kontejnerovém provedení</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the 6th International Seminar on ORC Power Systems

ISBN

978-3-00-070686-8

ISSN

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e-ISSN

2709-7609

Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

Technical University of Munich

Místo vydání

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Místo konání akce

virtual format

Datum konání akce

11. 10. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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