Effect of Multicomponent Mixtures on Cycles with Supercritical Carbon Dioxide

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00317539" target="_blank" >RIV/68407700:21220/17:00317539 - isvavai.cz</a>

Result on the web

<a href="http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2650549" target="_blank" >http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2650549</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/GT2017-64044" target="_blank" >10.1115/GT2017-64044</a>

Result language

angličtina

Original language name

Effect of Multicomponent Mixtures on Cycles with Supercritical Carbon Dioxide

Original language description

With the increasing interest in solar and geothermal power plants as well as waste heat recovery systems from many technologies, the whole world is more focused on gas power cycles. Especially, the supercritical carbon dioxide (S-CO2) cycles are very interesting for these applications. This is due to many advantages of the S-CO2 cycles over the other cycles such as a steam-water cycle or helium cycle. On the other hand, S-CO2 cycles have also disadvantages. One of the disadvantages is presence of impurities in the cycles. The big question is the effect of these impurities in the CO2, which can occur as impurities or can be suitably added to the pure CO2. From the previous research, it is obvious that binary mixtures affect the cycle as they influence cycle component design and thus the overall efficiency of the power cycle. The biggest effect of mixtures is on the heat exchangers and compressor, which operate close to the critical point. The positive effect of the binary mixtures is observed in the recuperative heat exchanger. On the other hand, negative effects occurs in the cooler. Therefore, the Czech Technical University in Prague (CTU) conducted research on supercritical carbon dioxide cycles, which is focused on the effect of the gaseous admixtures in S-CO2 on the different cycle components. The main goal of this paper is to describe the effect of gaseous admixtures on the efficiency of the cycles and their effect on each component. The first part of the study is focused on the calculation of the basic cycles for binary mixtures and description of the effect on the compressor and the cycle efficiency. The second part of the study is focused on the calculation of the basic cycles for multicomponent mixtures. In this part, the effect of the mixtures for different compositions and amounts of the individual mixture components will be presented. The calculations are performed for pure CO2 and. then for selected multicomponent mixtures. A basic multicomponent mixtur

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20704 - Energy and fuels

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

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

Article name in the collection

ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition

ISBN

978-0-7918-5096-1

ISSN

—

e-ISSN

—

Number of pages

10

Pages from-to

—

Publisher name

American Society of Mechanical Engineers - ASME

Place of publication

New York

Event location

Charllot

Event date

Jun 11, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000412862700044