Experimental Rig for LiBr-Water absorption power cycle - Design and first experimental results

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F18%3A00329003" target="_blank" >RIV/68407700:21220/18:00329003 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21720/18:00329003

Výsledek na webu

<a href="https://aip.scitation.org/doi/10.1063/1.5081646" target="_blank" >https://aip.scitation.org/doi/10.1063/1.5081646</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5081646" target="_blank" >10.1063/1.5081646</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental Rig for LiBr-Water absorption power cycle - Design and first experimental results

Popis výsledku v původním jazyce

Absorption power cycle (APC) working with LiBr-H2O solution as a working fluid has been recently identified as a prospective option power production for low temperature and small output (1-10 kW) applications. Different boiling temperatures of the solution components cause a temperature glide during evaporation and condensation (instead of isothermal process for single-component fluid), which can decrease exergy losses during heat exchange processes. The cycle can also operate in a regime of partial power production and partially as an absorption chiller. Thermodynamic properties of the working fluid give a very interesting performance in comparison to ORC as well as standard Kalina cycle. On the other hand the whole cycle (high and low pressure) operates at sub-ambient pressure with large volumetric flows. However, this gives a potential for high turboexpander efficiency for power output in order of several kW. This concept of APC also brings many challenges for the real-life system as actual temperature profile in heat exchangers with temperature glide phase change, purity of the steam going to the expander concerning the liquid solution droplets, actual air tight operation and limiting of corrosion in the system. Therefore and experimental rig for validation of these aspects has been built. Its specific design, methods for components' sizing and first experimental results which tackle some of the mentioned challenges are presented in this work. Results are presented for design of experimental desorber, vapour separator and general system of the rig which has been built in current phase of larger experimental intentions. First results with water instead of LiBr solution give suggestions of required desorber configuration. Expander, absorber or eventually also parallel absorption chiller operation is under planning as a future work.

Název v anglickém jazyce

Experimental Rig for LiBr-Water absorption power cycle - Design and first experimental results

Popis výsledku anglicky

Absorption power cycle (APC) working with LiBr-H2O solution as a working fluid has been recently identified as a prospective option power production for low temperature and small output (1-10 kW) applications. Different boiling temperatures of the solution components cause a temperature glide during evaporation and condensation (instead of isothermal process for single-component fluid), which can decrease exergy losses during heat exchange processes. The cycle can also operate in a regime of partial power production and partially as an absorption chiller. Thermodynamic properties of the working fluid give a very interesting performance in comparison to ORC as well as standard Kalina cycle. On the other hand the whole cycle (high and low pressure) operates at sub-ambient pressure with large volumetric flows. However, this gives a potential for high turboexpander efficiency for power output in order of several kW. This concept of APC also brings many challenges for the real-life system as actual temperature profile in heat exchangers with temperature glide phase change, purity of the steam going to the expander concerning the liquid solution droplets, actual air tight operation and limiting of corrosion in the system. Therefore and experimental rig for validation of these aspects has been built. Its specific design, methods for components' sizing and first experimental results which tackle some of the mentioned challenges are presented in this work. Results are presented for design of experimental desorber, vapour separator and general system of the rig which has been built in current phase of larger experimental intentions. First results with water instead of LiBr solution give suggestions of required desorber configuration. Expander, absorber or eventually also parallel absorption chiller operation is under planning as a future work.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/ED2.1.00%2F03.0091" target="_blank" >ED2.1.00/03.0091: Univerzitní centrum energeticky efektivních budov (UCEEB)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

AIP Conference Proceedings 2047: 17th Conference of Power SystemEngineering, Thermodynamics and FluidMechanics

ISBN

978-0-7354-1773-1

ISSN

0094-243X

e-ISSN

—

Počet stran výsledku

11

Strana od-do

—

Název nakladatele

AIP Publishing

Místo vydání

Melville, NY

Místo konání akce

Plzeň

Datum konání akce

13. 6. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—