Experimental development of a lithium bromide absorption power cycle

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00365016" target="_blank" >RIV/68407700:21220/23:00365016 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21720/23:00365016

Result on the web

<a href="https://doi.org/10.1016/j.renene.2023.02.123" target="_blank" >https://doi.org/10.1016/j.renene.2023.02.123</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.renene.2023.02.123" target="_blank" >10.1016/j.renene.2023.02.123</a>

Result language

angličtina

Original language name

Experimental development of a lithium bromide absorption power cycle

Original language description

Absorption cycles have been proposed not only for cooling but also for power generation, benefiting from temperature glide in heat exchangers, lowering exergy destruction. They can effectively utilise low-temperature solar, geothermal or waste heat. Apart from water-ammonia mixture, alternative working fluids may provide further advantages. Specifically attractive is an aqueous solution of salts such as lithium bromide (LiBr), also known from absorption cooling. Previous theoretical works found thermodynamic benefits of this concept mainly for heat sources around 100 °C and technical feasibility even for kW scale systems, but experimental works were limited. This work fills the gap by reporting on the world's first absorption power cycle (APC) using LiBr solution to convert low-temperature heat to power directly. A proof-of-concept system was built and operated with a 360 W design power output, featuring a nylon 3D printed turbine or measurement of temperature glide during phase change in the heat exchangers. This work includes extensive review of considerations for experimental system, design, commissioning and experimental performance. The measured turbine efficiency reached 25%, with a potential for significantly higher values. Over the range of explored conditions, if 65% expander performance was assumed, the maximal cycle efficiency could be around 5% and utilisation efficiency 0.5%.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20704 - Energy and fuels

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2023

Confidentiality

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

Name of the periodical

Renewable Energy

ISSN

0960-1481

e-ISSN

1879-0682

Volume of the periodical

207

Issue of the periodical within the volume

May

Country of publishing house

GB - UNITED KINGDOM

Number of pages

27

Pages from-to

321-347

UT code for WoS article

000952010600001

EID of the result in the Scopus database

2-s2.0-85149817858