The influence of fracture connectivity on heat extraction performance of geothermal doublet systems based on a coupled thermo-hydro-mechanical model DOI
Jia Liu,

Conghui Peng,

Yi Xue

et al.

Numerical Heat Transfer Part A Applications, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 24

Published: July 26, 2024

The fracture connectivity in enhanced geothermal systems plays a vital role the process of heat extraction. In this paper, coupled thermo-hydro-mechanical model with discrete fractures is developed to investigate influence on extraction performance doublet system. proposed adopts assumptions one-dimensional element and thin elastic layer. influences spacing or two efficiency are investigated under varying thermal conductivity permeability ratios. evolutions aperture, production temperature, rate analyzed. simulations indicate that key factors influencing recovery, listed order decreasing impact, ratio, connectivity, bedrock conductivity. When ratio exceeds 10−6, convection becomes dominant factor, thereby diminishing impact connectivity. contrast, when greater than 3 W/(m·K), conduction takes precedence, by preferential flow paths resulting from research results have important guiding significance for optimization design strategy reservoirs.

Language: Английский

Local entropy generation optimization and thermodynamic irreversibility analysis of oval-shaped coaxial ground heat exchangers: A detailed numerical investigation DOI
Taha Rajeh, Basher Hassan Al-Kbodi, Mohamed E. Zayed

et al.

International Journal of Heat and Mass Transfer, Journal Year: 2024, Volume and Issue: 228, P. 125650 - 125650

Published: May 4, 2024

Language: Английский

Citations

21

Enhanced performance of a hybrid adsorption desalination system integrated with solar PV/T collectors: Experimental investigation and machine learning modeling coupled with manta ray foraging algorithm DOI
Mohamed E. Zayed, Mohamed Ghazy, Bashar Shboul

et al.

Applied Thermal Engineering, Journal Year: 2024, Volume and Issue: 255, P. 124023 - 124023

Published: July 24, 2024

Language: Английский

Citations

19

Performance Optimization of Double U‐Tube Borehole Heat Exchanger for Thermal Energy Storage DOI Creative Commons
Esa Dube Kerme, Alan S. Fung, M. Ziad Saghir

et al.

Energy Storage, Journal Year: 2025, Volume and Issue: 7(2)

Published: Feb. 19, 2025

ABSTRACT This paper presents an optimization study of the thermal performance a double U‐tube borehole heat exchanger (BHE) with two independent circuits that can be used in energy storage. The applies Taguchi method and utility concept to obtain optimum parameters for objective functions: maximum transfer rate effectiveness BHE. A validated numerical model fully implicit is applied compute transient results revealed optimal factors (denoted letters numbers showing their levels) achieving are 1 B 3 C 2 D E F G H , respectively. resulted 120 W/m 69.3%. Using method, single set by levels as ) obtained maximize These yielded 87.3 54.6%. Finally, analysis variance (ANOVA) showed ground conductivity, inlet temperature working fluid, depth most influential affecting provides crucial information improvement, enhanced savings, reduced environmental impact, hybrid source pump system integrated

Language: Английский

Citations

1

Thermo-economic performance of a leaky downhole coaxial geothermal system for maximizing geothermal energy production: Numerical investigation DOI
Hongmei Yin, Mohamed E. Zayed, Yang Li

et al.

Renewable Energy, Journal Year: 2024, Volume and Issue: 232, P. 121082 - 121082

Published: Oct. 1, 2024

Language: Английский

Citations

9

Mitigating CO2 Emissions: A Review on Emerging Technologies/Strategies for CO2 Capture DOI

A.E. Geweda,

Mohamed E. Zayed, Mohd Yusuf Khan

et al.

Journal of the Energy Institute, Journal Year: 2024, Volume and Issue: unknown, P. 101911 - 101911

Published: Nov. 1, 2024

Language: Английский

Citations

9

Thermohydraulic performance augmentation and heat transfer enhancement of automotive radiators using nano-coolants: a critical review DOI
Mohamed H. S. Bargal,

Abdelwahab N. Allam,

Ashraf M. Zaki

et al.

Journal of Thermal Analysis and Calorimetry, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Language: Английский

Citations

1

Improving the Thermal Performance of Vertical Ground Heat Exchanger by Modifying Spiral Tube Geometry: A Numerical Study DOI Creative Commons
Nahid Hasan, Md. Hasan Ali, Nahyan Ahnaf Pratik

et al.

Heliyon, Journal Year: 2024, Volume and Issue: 10(15), P. e35718 - e35718

Published: Aug. 1, 2024

Ground heat exchanger (GHE) is the most crucial element of a ground source pump (GSHP) system for building cooling and heating by utilization geothermal energy. Therefore, intending to enhance performance GHE, present study conducts computational investigation thermal modified spiral tube vertical GHEs. Several modifications uniform-pitched GHE are made increase its performance. Some introduced as variable-pitched where inlet pipes densified in lower part GHEs reducing pitch distance. Conversely, some modifications, position outlet straight pipe changed. Water considered working fluid temperature water maintained fixed at 300.15 K. After extensive analysis, it evident that, when placed outside coil, there 7.67 % enhancement than traditional GHE. However, like not significant improve due quick saturation soil around pipes. To have balance between transfer rate pressure drop, capability (TPC) coefficient improvement

Language: Английский

Citations

6

Comparative numerical investigation on hollow-finned borehole heat exchangers: Multi-criteria optimization and dimensionless sensitivity analysis DOI
Basher Hassan Al-Kbodi, Taha Rajeh, Mohamed E. Zayed

et al.

Applied Thermal Engineering, Journal Year: 2024, Volume and Issue: 258, P. 124616 - 124616

Published: Oct. 13, 2024

Language: Английский

Citations

5

Comprehensive parametric study and sensitivity analysis of automotive radiators using different water/ethylene glycol mixtures: Toward thermo‐hydraulic performance and heat transfer characteristics optimization DOI
Mohamed H. S. Bargal,

Abdelwahab N. Allam,

Mohamed E. Zayed

et al.

Heat Transfer, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 10, 2024

Abstract Automotive radiators are primarily utilized in vehicles to dissipate the heat generated by engine block into surrounding. Utilizing coolants with superior thermophysical properties reduces power consumption and improves cooling performance. Comprehending correlation between coolant characteristics its thermohydraulic behavior is essential for advancing this innovative technology. This investigation introduces a detailed parametric study of an automotive radiator using diversified mixtures. Ethylene glycol (EG)/water mixtures, namely, (40:60), (50:50), (60:40) as coolant. The influences operational mechanism parameters, that is, inlet temperature, intake air airflow rate, flowrate, mixture ratio on effectiveness, transfer, fluid flow investigated. A coupled model, based effectiveness‐NTU thermal resistance theories, developed simulation investigated radiator. outcomes revealed transfer rate more significantly influenced temperatures than flowrate. Findings reveal optimal conditions design be (40 EG:60 Water), Reynolds number 1087.5, 2175, 11°C air‐intake 94.25°C temperature maximization. findings also indicated optimum yielded maximum advantage (AR) lowest pumping power, which achieved 7.94% 19.30% higher AR compared (50:50) solutions, respectively. From energy reduction prospective, EG/water results 25.11% 49.77%, respectively, under same operating conditions. Conclusively, optimized explored offers promising approach improving vehicle technology increasing efficiency internal combustion engines.

Language: Английский

Citations

4

Experimental investigation and numerical modeling of an innovative horizontal coaxial ground heat exchanger (HCGHE) for geothermal heat pump applications DOI

Washim Akram,

Qian Chen,

Gregory Nortz

et al.

Applied Thermal Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 124492 - 124492

Published: Sept. 1, 2024

Language: Английский

Citations

4