Autor: Qandil, Ahmed - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Experimental Analysis of Atmospheric Water Harvester Using Ammonia Vapour Absorption System
Autorzy:: Qandil, Ahmed
Othman, Ali
Beithou, Nabil Ibrahim
Powiązania:: https://bibliotekanauki.pl/articles/2202359.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: atmospheric water harvester
vapour absorption system
velocity effect
AWH analysis
AWG application
Opis:: There are increasing concerns for the promising future of atmospheric water harvesters (AWH). AWH have been analysed theoretically and experimentally using different technologies such as Vapour Compression (VC) Thermoelectric (TE), Sorption (absorption, adsorption) and shape-based techniques. These techniques are suffering from low water harvesting or high energy consumption. The ammonia vapour absorption system (VAS) (which can be operated using renewable energy sources) has not yet been analysed experimentally. In this study, the AWH based on ammonia VAS has been studied experimentally, the effect of air flow velocity and ambient conditions have been analysed. The comparison between the existing techniques and VAS was performed to explore the possibility of implementing biomass, geothermal and solar energy in generating water from atmosphere, thus reducing the cost of the m3 of water produced.
Źródło:: Journal of Ecological Engineering; 2023, 24, 2; 221--229
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of Partially Evacuated Solar Still System under Jordan Climate
Autorzy:: Qandil, Ahmed
Alshaikh, Ibrahim Abu
Aljabarin, Nader
Rababa, Khalid S.
Beithou, Nabil
Powiązania:: https://bibliotekanauki.pl/articles/123987.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: solar energy
distillation development
Jordan climate
partial vacuum pressure
Opis:: The pressing need for reducing the global warming effects from the emission of greenhouse gases necessitates the use of renewable energy where possible. Solar distillers are devices with a promising future. In this work, an experimental setup (solar distiller) was constructed and equipped with a mirror, basin, glass cover, compressor, sensors and controllers to study the partial evacuation effects on different solar distillation parameters and the production capacity under the Jordanian climate. The test rig was tested for three different water levels (1, 2 and 3 cm), and four pressure values (1, 0.9, 0.8 and 0.7 atm) under the Jordanian climate. The detailed experimental results strongly correlate with the results previously published in literature. The modifications performed on the system doubled the previously attained efficiency. These improvements in the solar distiller will favor the application of the vacuum pressure principle in many different applications, such as the water extraction from the atmospheric air.
Źródło:: Journal of Ecological Engineering; 2020, 21, 3; 1-9
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Experimental and Performance Analyses with Frequently Discrete Usage of the Hot Storage Tanks
Autorzy:: Qandil, Ahmed
Al Rababa’a, Khalid
Aljabarin, Nader
Al Ganem, Zaid Abu
Abdullah, Rasheed
Powiązania:: https://bibliotekanauki.pl/articles/123418.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: storage tank
discrete usage
stratification
thermocline thickness
mix number
heat transfer
usable energy
Opis:: Hot water storage tanks are devices with high energy consumption, used widely in residential, industrial and commercial sectors. The hot storage tank is a key device in numerous applications such as electrical heaters, solar thermal storage, solar electrical energy production and many others. Its superior technology is favorable for the designers and has a great impact on the market competition. Hot water storage tanks were studied under continuous usage feature, for different inlet types, flow rates, thermal stratification in static and dynamic modes, both experimentally and numerically. The real discrete usage feature has not been analyzed in a proper way. In this study, the experimental and performance analyses with frequent discrete usage of the hot storage tank were performed. Different flow rates of 3, 6, and 9 l/min with 5, 10 and 20 min discrete usage waiting periods were studied. It was found that the thermocline thickness and mixing number increases for both increasing the flow rate due the increment in turbulent mixing potential and increasing the waiting period due to the increase in heat transfer time available between the hot and cold layers. The real data was drawn as is to permit further analyses and data comparison to other researchers. The effect of waiting periods can be used in solar HST to maximize the efficiency of solar collectors as the solar collector efficiency is high at low temperatures.
Źródło:: Journal of Ecological Engineering; 2019, 20, 1; 52-60
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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