Results 101 to 110 of about 153,973 (315)

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

open access: yesAdvanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi   +3 more
wiley   +1 more source

Efficient heat distribution in solar district heating systems [Elektronisk resurs]

open access: yes, 2018
This paper contains a short analysis showing the main benefit for solar district heating when a novel heat distribution concept with low temperatures is applied.
Averfalk, Helge,, Werner, Sven,
core  

Ground-source heat pumps and underground thermal energy storage: energy for the future [PDF]

open access: yes, 2008
We need energy for space heating—but in most cases not where or when energy sources are available. Energy storage, which helps match energy supply and demand, has been practised for centuries, also in Norway.
Banks, D.   +4 more
core  

Mapping of potential heat sources for heat pumps for district heating in Denmark

open access: yes, 2016
The ambitious policy in Denmark on having a 100% renewable energy supply in 2050 requires radical changes to the energy systems to avoid an extensive and unsustainable use of biomass resources.
Persson, U.   +5 more
core   +1 more source

Decentralised heat supply in district heating systems : Implications of varying differential pressure

open access: yes, 2014
There is a rising interest for the integration of decentralised heat supply in district heating (DH) systems in the form of so-called prosumers, i.e., customers that both can withdraw and supply heat to the grid.
Lauenburg, P.   +2 more
core   +1 more source

Assessing the techno-economic impact of district heating on electrical distribution grid reinforcements

open access: yesAdvances in Applied Energy
Enhanced sector coupling across electricity, mobility, and heating sectors leads to higher efforts for distribution grid upgrades. Based on a case study, this paper evaluates the role of district heating networks in reducing electrical distribution grid ...
Jerry Lambert   +9 more
doaj   +1 more source

PAST, PRESENT AND FUTURES OF DISTRICT HEAT SUPPLIERS, WITH SPECIAL REGARD TO HUNGARIAN DISTRICT HEAT SUPPLIERS - LITERATURE REVIEW [PDF]

open access: yesAnnals of the University of Oradea: Economic Science, 2019
In recent years, many researchers displayed interest in the different types of social innovations. In the current research, the author does not aim at creating a new definition, but at examining the possibilities to generate social innovations in the ...
SÜVEGES Gábor Béla
doaj  

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera   +8 more
wiley   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

open access: yesAdvanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Efficient heat distribution in solar district heating systems

open access: yes, 2018
This paper contains a short analysis showing the main benefit for solar district heating when a novel heat distribution concept with low temperatures is applied.
Werner, Sven, Averfalk, Helge
core  

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