Results 71 to 80 of about 396,932 (356)

Research Progress and Prospect of Air Source Heat Pump in Low Temperature Environment

open access: yesZhileng xuebao, 2013
Air source heat pump, a high efficiency, energy conservation and environmental protection device, is in prospect of wide application and market value.
Wang Fenghao   +3 more
doaj  

Transparency phenomena of flat-rice noodles (kuew teow) at drying at soaking variation [PDF]

open access: yes, 2016
This paper presents a transparency phenomenon that occurred in hot air and heat pump dried flat-rice noodles, which is explained by the higher colour changes, glassy puffing microstructures, and lower fat content in comparison to the freeze dried flat ...
Hii, Ching Lik   +2 more
core  

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann   +3 more
wiley   +1 more source

High-Temperature Heat Pumps : Task 1 – Technologies. Annex 58 about High-Temperature Heat Pump

open access: yes, 2023
Annex 58 about High-Temperature Heat Pumps is coordinated by the Operating Agent: Danish Technological Institute, Energy and Climate. The Annex is being operated from 01/2020 to 12/2023. The main information can be found at the Annex 58 homepage: https://heatpumpingtechnologies.org/annex58/
openaire   +1 more source

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann   +3 more
wiley   +1 more source

Experiment on Radiant Floor Heating System of Air-source Heat Pump in Hotan Area

open access: yesZhileng xuebao, 2023
Heat pump heating can solve the environmental pollution problems caused by coal heating. This study used an air source heat pump system applied in Hotan area as the research object and tested the in-situ performance of the air source heat pump heating ...
Sun Zhili   +6 more
doaj  

Jet pump-drive system for heat removal [PDF]

open access: yes
A jet pump, in combination with a TEMP, is employed to assure safe cooling of a nuclear reactor after shutdown. A TEMP, responsive to the heat from the coolant in the secondary flow path, automatically pumps the withdrawn coolant to a higher pressure and
French, J. R.
core   +1 more source

Installation of a ground water heat pump for the average household [PDF]

open access: yes, 1983
Ground water is an economic, efficient and unlimited source of energy. It is known that the high specific heat of water allows a high yield of heat energy.
Kuhn, Kathryn M.
core  

Advancements in hybrid photovoltaic-thermal systems: performance evaluations and applications [PDF]

open access: yes, 2016
Due to European Directives (2010/31/UE on buildings energy performance, 2009/28/CE on the use of renewable energy, 2012/27/UE on the energy efficiency) the electric and thermal energy needs of new and retrofitted buildings are faced by increasing ...
Bagarella, Giacomo   +2 more
core   +1 more source

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger   +2 more
wiley   +1 more source

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