Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Emad Elnajjar"'
Publikováno v:
Energy Reports, Vol 11, Iss , Pp 720-735 (2024)
Renewable energy is crucial for a sustainable future, and wind energy holds significant potential as a viable solution to meet global demands. The current study employs high-fidelity Computational Fluid Dynamics (CFD) simulations to investigate the u
Externí odkaz:
https://doaj.org/article/fdf472be9ba94c268ca9c3169dbb29d8
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 310-315 (2023)
Birds adapt to the changing flight conditions by performing intricate feather-movements to manipulate the airflow. The avian wings often undergo seamless transformations at the trailing-edge to achieve camber-reflexes for extended flight envelope. A
Externí odkaz:
https://doaj.org/article/41edc47e2bef4ac9966ce46d99af94ad
Publikováno v:
International Journal of Thermofluids, Vol 20, Iss , Pp 100476- (2023)
This work builds on our recent research on finned phase change material (PCM) heat sinks, where we proposed a novel Gallium based PCM heat sink concept that counter-intuitively incorporated fins detached from the hot sink base instead of being fully
Externí odkaz:
https://doaj.org/article/a60dfec9ae034a00826fc58074389bda
Publikováno v:
International Journal of Thermofluids, Vol 20, Iss , Pp 100468- (2023)
A detailed experimental and numerical validation studies are conducted on internal channel jet impingement cooling where seven jets impinging inside a rotating semi-cylindrical channel. The study objective is to mimic the cooling flow structure in ga
Externí odkaz:
https://doaj.org/article/bce2bed3134447aaa14bfaf06f9c66bd
Publikováno v:
International Journal of Thermofluids, Vol 20, Iss , Pp 100467- (2023)
A vortex tube is a device that separates compressed air into two streams: one with a higher temperature (hot stream) and the other with a lower temperature (cold stream). It is a popular cooling option because it is small, safe, and affordable. The m
Externí odkaz:
https://doaj.org/article/f8c6eb738c3845b58aeace96efdb94c6
Autor:
Md. Zishan Akhter, Ahmed Riyadh Ali, Hasan Kamliya Jawahar, Farag Khalifa Omar, Emad Elnajjar
Publikováno v:
Energy Conversion and Management: X, Vol 19, Iss , Pp 100400- (2023)
The increasing demand for sustainable energy has spurred research and development of wind turbines. In this study, a passive flow-control technique using a non-uniform curved slot is proposed. The slot is engraved on the mid-chord region of the Natio
Externí odkaz:
https://doaj.org/article/1ec0f7b0350e440f86155325bc51fa1c
Publikováno v:
Alexandria Engineering Journal, Vol 59, Iss 5, Pp 3781-3797 (2020)
Currently, gas turbine engines play a vital role in our daily lives. Some of the uses of gas turbine engines include aircraft propulsions, helicopters, submarines, and industrial applications. The thermal efficiency and power output of such engines c
Externí odkaz:
https://doaj.org/article/c959f8709a0746ccaef0ee6c082a1880
Autor:
Zahid Ahmed Qureshi, Salah Addin Burhan Al Omari, Emad Elnajjar, Farooq Mahmoud, Oraib Al-Ketan, Rashid Abu Al-Rub
Publikováno v:
Case Studies in Thermal Engineering, Vol 27, Iss , Pp 101315- (2021)
Owing to their high latent heat of fusion and thermal stability, organic phase change materials (PCMs) are lucrative candidates for utilization in latent heat thermal energy storage systems (LHTES). However, since their low thermal conductivity inhib
Externí odkaz:
https://doaj.org/article/1e79ec4899504e3aaf8da49e62b29391
Autor:
Saleha Al-Mardeai, Emad Elnajjar, Raed Hashaikeh, Boguslaw Kruczek, Bart Van der Bruggen, Sulaiman Al-Zuhair
Publikováno v:
Molecules, Vol 27, Iss 1, p 288 (2022)
Hydrolysis is the heart of the lignocellulose-to-bioethanol conversion process. Using enzymes to catalyze the hydrolysis represents a more environmentally friendly pathway compared to other techniques. However, for the process to be economically feas
Externí odkaz:
https://doaj.org/article/849d208b900b40789fb62538713770ba
Autor:
Saud Khashan, Sawsan Dagher, Salahaddin Al Omari, Nacir Tit, Emad Elnajjar, Bobby Mathew, Ali Hilal-Alnaqbi
Publikováno v:
Materials Research Express, Vol 4, Iss 5, p 055701 (2017)
This work proposes and demonstrates the novel idea of using Fe _3 O _4 @SiO _2 core/shell structure nanoparticles (NPs) to improve the solar thermal conversion efficiency. Magnetite (Fe _3 O _4 ) NPs are synthesized by controlled co-precipitation met
Externí odkaz:
https://doaj.org/article/8fe0feb442174f2c9e08e82c6a67da82