FG Exergiebasierte Methoden für kältetechnische Systeme

5 Items

Recent Submissions
Superstructure-Based Optimization of Vapor Compression-Absorption Cascade Refrigeration Systems

Mussati, Sergio F. ; Morosuk, Tatiana ; Mussati, Miguel C. (2020-04-10)

A system that combines a vapor compression refrigeration system (VCRS) with a vapor absorption refrigeration system (VARS) merges the advantages of both processes, resulting in a more cost-effective system. In such a cascade system, the electrical power for VCRS and the heat energy for VARS can be significantly reduced, resulting in a coefficient of performance (COP) value higher than the value...

Optimal design of supercritical carbon dioxide cycle based system for concentrated solar power application

Ma, Yuegeng (2020)

Concentrated solar power (CSP) is a promising alternative to conventional fossil fuel energy for the future electricity generation. Upgrading the power block with a supercritical carbon dioxide (S-CO2) cycle is regarded as a promising approach to achieving better efficiency and lower levelized cost of electricity (LCOE) for the CSP plant. This work performs an optimal design of the S-CO2 cycl...

Exergetic and Economic Evaluation of a Transcritical Heat-Driven Compression Refrigeration System with CO2 as the Working Fluid under Hot Climatic Conditions

Luo, Jing ; Morosuk, Tatiana ; Tsatsaronis, George ; Tashtoush, Bourhan (2019-11-28)

The purpose of this research is to evaluate a transcritical heat-driven compression refrigeration machine with CO2 as the working fluid from thermodynamic and economic viewpoints. Particular attention was paid to air-conditioning applications under hot climatic conditions. The system was simulated by Aspen HYSYS® (AspenTech, Bedford, MA, USA) and optimized by automation based on a genetic algor...

Cryogenic energy storage systems

Hamdy, Sarah (2019)

Grid-scale energy storage systems are capable of providing the needed flexibility to the power grid operators in order to ensure a secure power supply with increasing shares of highly intermittent electricity generation from renewable energy sources. Cryogenic energy storage (CES) is a grid-scale energy storage concept in which electricity is stored in the form of liquefied gas enabling a remar...

Model-Based Cost Optimization of Double-Effect Water-Lithium Bromide Absorption Refrigeration Systems

Mussati, Sergio F. ; Mansouri, Seyed Soheil ; Gernaey, Krist V. ; Morosuk, Tatiana ; Mussati, Miguel C. (2019-01-19)

This work presents optimization results obtained for a double-effect H2O-LiBr absorption refrigeration system considering the total cost as minimization criterion, for a wide range of cooling capacity values. As a model result, the sizes of the process units and the corresponding operating conditions are obtained simultaneously. In this paper, the effectiveness factor of each proposed heat exch...