Results 41 to 50 of about 55,315 (304)

Improving Building Energy Efficiency through Measurement of Building Physics Properties Using Dynamic Heating Tests [PDF]

open access: yes, 2019
© 2019 the author. Licensee MDPI, Basel, Switzerland.Buildings contribute to nearly 30% of global carbon dioxide emissions, making a significant impact on climate change. Despite advanced design methods, such as those based on dynamic simulation tools, a
Jankovic, Ljubomir
core   +3 more sources

A review on thermal performance and heat transfer augmentation in solar air heater

open access: yesInternational Journal of Sustainable Energy, 2022
Development in solar air collectors have increased because of the renewable and non-polluting sources of energy. The present study focused on artificial roughness, vortex generators, thermal storage units, etc., which are employed to improve the ...
Sohan Lal Sharma, Ajoy Debbarma
doaj   +1 more source

Numerical Simulation of Solar Air Heater using Paraffin Wax-Aluminum Compound as Phase Changing Material

open access: yesAptisi Transactions on Technopreneurship, 2021
This paper presents a theoretical investigation of solar air heater using phase change material (PCM). PCM used in present configuration is homogenous mixture of paraffin wax with Aluminium powder.
Atul Kumar   +2 more
doaj   +1 more source

Experimental study of temperature stratification in an integrated collector-storage solar water heater with two horizontal tanks [PDF]

open access: yes, 2006
The effect of tank-interconnection geometry on temperature stratification in an integrated collector-storage solar water (ICSSW) heater with two horizontal cylindrical tanks has been studied.
Madhlopa, A., Mgawi, R., Taulo, J.
core   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

open access: yesAdvanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho   +8 more
wiley   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song   +4 more
wiley   +1 more source

Numerical investigation of the spiral solar air heater performance [PDF]

open access: yesAUT Journal of Mechanical Engineering
This paper presents a new design of a spiral solar air heater with a 90 turning of the air inside the passageway assembled between the absorber and bottom plate for the purposes of mixing process and extending the surface of heat transfer that finally ...
S. A. Gandjalikhan Nassab
doaj   +1 more source

Subatmospheric Brayton-cycle Engine Program Review [PDF]

open access: yes, 1984
A solar energy powered electrical generator utilizing a Subatmospheric Brayton cycle engine is examined. The generator consists of a subatmospheric, Brayton-cycle engine and a permanent magnet (PM) alternator.
Johnson, R. L.
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

Numerical Simulation of the Thermal Performance of a Tubular Solar Air Heater

open access: yesJournal of Engineering, 2023
In this work, a flat-plate solar air heater (FSAH) and a tubular solar air heater (TSAH) were designed and tested numerically. The work investigates the effect of increasing the contact area between the flowing air and the absorber surface of each ...
Yousif Fateh Midhat   +1 more
doaj   +1 more source

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