Possibilities of Water-Lithium Bromide Absorption Power Cycles for Low Temperature, Low Power and Combined Power and Cooling Systems

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00316369" target="_blank" >RIV/68407700:21220/17:00316369 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21720/17:00316369

Result on the web

<a href="https://ac.els-cdn.com/S1876610217339632/1-s2.0-S1876610217339632-main.pdf?_tid=a219fbc6-e364-11e7-9453-00000aab0f02&acdnat=1513540881_99a073edc85be2d62818728384380022" target="_blank" >https://ac.els-cdn.com/S1876610217339632/1-s2.0-S1876610217339632-main.pdf?_tid=a219fbc6-e364-11e7-9453-00000aab0f02&acdnat=1513540881_99a073edc85be2d62818728384380022</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.egypro.2017.09.104" target="_blank" >10.1016/j.egypro.2017.09.104</a>

Result language

angličtina

Original language name

Possibilities of Water-Lithium Bromide Absorption Power Cycles for Low Temperature, Low Power and Combined Power and Cooling Systems

Original language description

Absorption power cycles (APC) provide an alternative to the ORC as an interesting thermodynamic cycle for waste heat recovery. Particular advantage of the APC is in a multicomponent working fluid that allows for a temperature glide along boiling and condensation (desorption and absorption). This phenomenon provides a good temperature match of hot and cold streams in the heat exchangers during the phase change. Thus it is possible to achieve higher exergy efficiency of the heat addition when sensible heat is used as a heat source. Similarly good temperature match and lower cooling fluid flow through absorber-condenser for heat rejection lowers the parasitic load of fans or cooling tower pumps. As a result, higher net efficiency can be achieved in comparison to a single component working fluid. In the past, the only considered APC has been Kalina cycle operating with water-ammonia mixture as a working fluid, while other fluid combinations were only rarely considered. Recently there came into an attention an aqueous solution of Lithium Bromide (LiBr), typically known from absorption cooling. Compared to ammonia-water mixture the pressure levels in the cycle are very low, typically both high and low pressure in vacuum. This results in high volumetric flow, bulky device, but when turbine is used it can achieve high efficiency and increased material cost are for small units is only of a marginal importance. In this study after the introduction of theoretical advantages in efficiency and of design features and constraints, we present results of several case studies for potential application. These are waste heat recovery from hot air stream, low temperature geothermal application, coupling with vacuum solar collectors, bottoming cycle for ORC and a combined cooling and power cycle as an alternative to the cooling-only absorption cycle.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20704 - Energy and fuels

Project

<a href="/en/project/LO1605" target="_blank" >LO1605: University Centre for Energy Efficient Buildings – Sustainability Phase</a><br>

Continuities

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

Energy Procedia - 4th International Seminar on ORC Power Systems

ISBN

—

ISSN

1876-6102

e-ISSN

—

Number of pages

8

Pages from-to

818-825

Publisher name

Elsevier Ltd

Place of publication

Oxford

Event location

Milano

Event date

Sep 13, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000411758800105