Numerical investigation of a first-stage stator turbine blade subjected to NH3–H2/air combustion flue gases

Alrebei, Odi Fawwaz; Page, Laurent M. Le; Hewlett, Sally; Bice, Yusuf; Amhamed, Abdulkarem

doi:10.1016/j.ijhydene.2022.07.190

Cited by 10 publications

(2 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The analysis revealed a hot pinch temperature of 90°C and a cold pinch temperature of 30°C. These parameters collectively demonstrate the heat exchanger's capacity to efficiently transfer heat between the hot and cold streams [19,25], ensuring effective temperature control in the ammonia production process [20,26].…”

Section: Methods Of Data Analysismentioning

confidence: 99%

NH3-H2-Working Fluid-based Shell and Tube Heat Exchanger and the H2O-to-H2O Helical Heat Exchanger: A Novel Integration to Ammonia Production Plants

2024

jjmie

View full text Add to dashboard Cite

This study assesses global efforts to enhance existing ammonia plants and explores the feasibility of integrating heat exchangers at different stages of ammonia production. Based on this, the researchers analyzed two heat exchange systems, namely the NH3-H2 shell and tube heat exchanger and the H2O-to-H2O helical heat exchanger, in order to investigate their objectives. This study investigated the use of different NH3-H2 compositions as working fluids in shell and tube heat exchangers, specifically focusing on the shell and tube heat exchanger. The ASPEN HYSYS software was utilized for this analysis. This investigation conducted a comprehensive analysis of different sensitivity analyses to assess the influence of ammonia efficiency on the cooling process. The utilization of shell and tube heat exchangers in cooling applications, specifically those with high ammonia concentrations, can result in a more compact design for the heat exchanger. The observed outcome can be explained by the advantageous characteristics of ammonia, such as its higher heat capacity and improved heat transport properties compared to water. Furthermore, the study utilized a computational fluid dynamics (CFD) approach, specifically employing ANSYS Fluent for the analysis. The helical design of the heat exchanger efficiently distributes heat flux under specific conditions. The heat flow decreases gradually along the length of the exchanger due to this distribution.

show abstract

Section: Methods Of Data Analysismentioning

confidence: 99%

NH3-H2-Working Fluid-based Shell and Tube Heat Exchanger and the H2O-to-H2O Helical Heat Exchanger: A Novel Integration to Ammonia Production Plants

2024

jjmie

View full text Add to dashboard Cite

show abstract

“…Driven by these regulations and national and international law, the industry has adopted carbon capturing and storage (CCS) methods. However, the usual CCS techniques are the conventional post-combustion [33][34][35], pre-combustion [36][37][38], and oxyfuel combustion [39,40] methods, which are preventive, but not corrective methods; that is, they cannot lead to zero carbon emissions and, thus, cannot reduce the existing global carbon footprint. In contrast, implementing the DAC system is a corrective action (i.e., a negative-carbon-emission system) as it directly removes CO 2 from the atmosphere, reducing the global carbon footprint.…”

Section: Photovoltaic System Performancementioning

confidence: 99%

Preliminary Design and Analysis of a Photovoltaic-Powered Direct Air Capture System for a Residential Building

Al Assaf,

Alrebei,

Le Page

et al. 2023

Energies

Self Cite

View full text Add to dashboard Cite

To promote the adoption of Direct Air Capture (DAC) systems, this paper proposes and tests a photovoltaic-powered DAC system in a generic residential building located in Qatar. The proposed DAC system can efficiently reduce CO2 concentration in a living space, thus providing an incentive to individuals to adopt it. The ventilation performance of the building is determined using Computational Fluid Dynamics (CFD) simulations, undertaken with ANSYS-CFD. The CFD model was validated using microclimate-air quality dataloggers. The simulated velocity was 1.4 m/s and the measured velocity was 1.35 m/s, which corresponds to a 3.5% error. The system decarbonizes air supplied to the building by natural ventilation or ventilation according to the ASHRAE standards. Furthermore, the performance of the photovoltaic system is analyzed using the ENERGYPLUS package of the Design Builder software. We assume that 75% of CO2 is captured. In addition, a preliminary characterization of the overall system’s performance is determined. It is determined that the amount of CO2 captured by the system is 0.112 tones/year per square meter of solar panel area. A solar panel area of 19 m2 is required to decarbonize the building with natural ventilation, and 27 m2 is required in the case of ventilation according to the ASHRAE standard.

show abstract

Fluid dynamics in the Kalina cycle: Optimizing heat recovery for sustainable energy solutions

Hussein,

Ahmed,

Abuzaid

et al. 2024

Case Studies in Thermal Engineering

View full text Add to dashboard Cite

Numerical investigation of a first-stage stator turbine blade subjected to NH3–H2/air combustion flue gases

Cited by 10 publications

References 22 publications

NH3-H2-Working Fluid-based Shell and Tube Heat Exchanger and the H2O-to-H2O Helical Heat Exchanger: A Novel Integration to Ammonia Production Plants

NH3-H2-Working Fluid-based Shell and Tube Heat Exchanger and the H2O-to-H2O Helical Heat Exchanger: A Novel Integration to Ammonia Production Plants

Preliminary Design and Analysis of a Photovoltaic-Powered Direct Air Capture System for a Residential Building

Fluid dynamics in the Kalina cycle: Optimizing heat recovery for sustainable energy solutions

Contact Info

Product

Resources

About