Multi-Scenario scheduling optimisation for a novel Double-Stage ammonia absorption refrigeration system incorporating an organic Rankine cycle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F22%3APU146312" target="_blank" >RIV/00216305:26210/22:PU146312 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0196890422009505" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0196890422009505</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.enconman.2022.116170" target="_blank" >10.1016/j.enconman.2022.116170</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Multi-Scenario scheduling optimisation for a novel Double-Stage ammonia absorption refrigeration system incorporating an organic Rankine cycle

Popis výsledku v původním jazyce

The coal chemical industry is facing severe challenges in energy conservation and emission reduction. High-value utilisation of waste heat is an effective method to solve the problem. However, the bottleneck is the utilisation of surplus low-grade waste heat full of uncertainty, challenging in its scale configuration and stable operation. This research firstly proposed a double-stage ammonia absorption refrigeration system incorporating an organic Rankine cycle. The proposed system can utilise waste heat as low as 52 degrees C to produce -40 degrees C cold energy. The lowest heat sink temperature in the refrigeration section could be 95 degrees C, with a coefficient of performance exceeding 0.30. With respect to waste heat fluctuation, a data-driven distributionally robust optimisation framework was proposed. By executing this method, multiple scenarios with similar data features could be generated. The uncertainty set was established in each scenario according to the probability density of the uncertain parameters. The uncertainty set was transformed into constraints of an adaptive genetic algorithm to create a balance between energy saving and operational stability. The proposed system and optimisation algorithm were then verified by a coal-to-SNG process. It was found that the unit cost of the waste heat refrigeration was 85% smaller than that of the original system and that the operational stability was improved to 97%. The waste heat utilisation for the whole process reduced the operating cost and carbon emission by 15% and 14%. Techno-economic analysis proved the feasibility of waste heat utilisation in economic performance, environmental protection and operational stability.

Název v anglickém jazyce

Multi-Scenario scheduling optimisation for a novel Double-Stage ammonia absorption refrigeration system incorporating an organic Rankine cycle

Popis výsledku anglicky

The coal chemical industry is facing severe challenges in energy conservation and emission reduction. High-value utilisation of waste heat is an effective method to solve the problem. However, the bottleneck is the utilisation of surplus low-grade waste heat full of uncertainty, challenging in its scale configuration and stable operation. This research firstly proposed a double-stage ammonia absorption refrigeration system incorporating an organic Rankine cycle. The proposed system can utilise waste heat as low as 52 degrees C to produce -40 degrees C cold energy. The lowest heat sink temperature in the refrigeration section could be 95 degrees C, with a coefficient of performance exceeding 0.30. With respect to waste heat fluctuation, a data-driven distributionally robust optimisation framework was proposed. By executing this method, multiple scenarios with similar data features could be generated. The uncertainty set was established in each scenario according to the probability density of the uncertain parameters. The uncertainty set was transformed into constraints of an adaptive genetic algorithm to create a balance between energy saving and operational stability. The proposed system and optimisation algorithm were then verified by a coal-to-SNG process. It was found that the unit cost of the waste heat refrigeration was 85% smaller than that of the original system and that the operational stability was improved to 97%. The waste heat utilisation for the whole process reduced the operating cost and carbon emission by 15% and 14%. Techno-economic analysis proved the feasibility of waste heat utilisation in economic performance, environmental protection and operational stability.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/EF15_003%2F0000456" target="_blank" >EF15_003/0000456: Laboratoř integrace procesů pro trvalou udržitelnost</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

ENERGY CONVERSION AND MANAGEMENT

ISSN

0196-8904

e-ISSN

1879-2227

Svazek periodika

neuveden

Číslo periodika v rámci svazku

270

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

18

Strana od-do

„“-„“

Kód UT WoS článku

000870339700005

EID výsledku v databázi Scopus

2-s2.0-85137307199