Results 21 to 30 of about 82,410 (303)

Synthesis of SmFeAsO by an Easy and Versatile Route and its Physical Property Characterization [PDF]

open access: yes, 2008
We report synthesis, structure, electrical transport and heat capacity of SmFeAsO. The title compound is synthesized by one-step encapsulation of stoichiometric FeAs, Sm, and Sm2O3 in an evacuated (10-5 Torr) quartz tube by prolong (72 hours) annealing ...
Alvarez, G. A.   +6 more
core   +3 more sources

Comparative Experimental Analysis of the Thermal Performance of Evacuated Tube Solar Water Heater Systems With and Without a Mini-Compound Parabolic Concentrating (CPC) Reflector(C < 1)

open access: yesEnergies, 2012
Evacuated tube solar water heater systems are widely used in China due to their high thermal efficiency, simple construction requirements, and low manufacturing costs.
Yuehong Su   +4 more
doaj   +1 more source

CFD Analysis of Thermal Performance in a U-Tube Solar Collector [PDF]

open access: yesEPJ Web of Conferences
Solar water heating systems have both domestic and industrial applications that are both inexpensive and easy to maintain. In this study, the thermal performance of a U tube evacuated tube solar collector (ETSC's) was evaluated numerically.
Tukhtabaev Jamshid   +5 more
doaj   +1 more source

The effect of different working fluids and internal geometries on the efficiency of evacuated tube heat pipe solar collectors

open access: yesJournal of Energy in Southern Africa, 2020
In this study, a heat pipe was modified with designed and manufactured inserts of specific profiles in order to investigate the effect of the internal geometries and working fluids on the efficiency of the evacuated tube heat pipe solar collector.
Jean Gad Mukuna, Jasson Gryzagoridis
doaj   +1 more source

The Evolution of Evacuated Blood Collection Tubes [PDF]

open access: yesLaboratory Medicine, 2003
“A laboratory test is no better than the specimen, and the specimen no better than the manner in which it was collected.” So stated the advertising language of BD (Becton Dickinson and Company) to promote the first evacuated blood collection tubes, back in the late 1940s and early 1950s.1 This technology for blood collection, patented in 1949, is ...
Valerie Bush, Richmond Cohen
openaire   +1 more source

An Optimized Design of a Single Effect Absorption Solar Chiller for an Energy Consuming Optimized Designed Residential Building [PDF]

open access: yesJournal of Renewable Energy and Environment, 2018
Traditional fossil fuels, which are also depleting cause environmental problems. A significant portion of global energy consumption is due to building air conditioning systems. Nowadays, considerable attention is drawn to renewable and sustainable energy
Negin Maftouni, Kiana Motaghedi
doaj   +1 more source

A comparison of the UK Standard Assessment Procedure and detailed simulation of solar energy systems for dwellings [PDF]

open access: yes, 2011
The drive to reduce worldwide Carbon Emissions directly associated with dwellings and to achieve a zero carbon home dictates that Renewable Energy Technologies will have an increasingly large role in the built environment.
Anderson, B.R.   +3 more
core   +1 more source

Comparative analysis of eccentric evacuated tube solar collector with circular and rectangular absorber working with nanofluid

open access: yesCleaner Engineering and Technology, 2021
This paper reports the results of a comparative study on a low concentration eccentric evacuated tube solar collector with two different absorber tubes of circular and rectangular cross sections.
Kamal A.R. Ismail   +2 more
doaj   +1 more source

Solar timber kilns: State of the art and foreseeable developments [PDF]

open access: yes, 2009
Analysis of the evolution in solar heated drying kilns in recent decades shows that there have been a series of modifications to optimize their thermal and drying efficiency.
JANNOT, Yves   +2 more
core   +5 more sources

Magnetohydrodynamic kink waves in two-dimensional non-uniform prominence threads [PDF]

open access: yes, 2011
We analyse the oscillatory properties of resonantly damped transverse kink oscillations in two-dimensional prominence threads. The fine structures are modelled as cylindrically symmetric magnetic flux tubes with a dense central part with prominence ...
A. N. Wright   +65 more
core   +2 more sources

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