Results 111 to 120 of about 68,781 (335)

Superheat Stability of an Evaporator and Thermostatic Expansion Valve [PDF]

open access: yes, 1998
In some refrigeration applications, difficulties arise in establishing stable evaporator operating conditions, especially when using a thermostatic expansion valve.
Hrnjak, P.S., Jacobi, A.M., Lenger, M.J.
core  

Control of Covalent Bond Enables Efficient Magnetic Cooling

open access: yesAdvanced Materials, EarlyView.
Giant and reversible magnetocaloric effect (MCE) is achieved by tuning covalency through sub‐unit‐cell chemical engineering, establishing a novel design principle for effective hysteresis control in magnetocaloric materials. Abstract Magnetic cooling, harnessing the temperature change in matter when exposed to a magnetic field, presents an energy ...
Xin Tang   +16 more
wiley   +1 more source

Heat transfer Characteristics for Condensation of R1234ze in a Horizontal Small Tube

open access: yesZhileng xuebao, 2014
The condensation heat transfer coefficients of R1234ze in a single circular minitube of 2mm inner diameter were investigated experimentally. The experiment are conducted at saturation temperature of 35 ℃ and 40 ℃, mass flux of 100~400 kg/(m2?s) and heat ...
Li Minxia   +3 more
doaj  

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

open access: yesAdvanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

Design sensitivity analysis of using various in-tube condensation correlations for an air-cooled condenser for ORCs [PDF]

open access: yes, 2015
The study is related to the evaluation of using 19 condensation heat transfer correlations in an annular finned horizontal round tube V-shaped air-cooled condenser design problem for a representative low-temperature waste heat recovery Organic Rankine ...
De Paepe, Michel   +2 more
core   +1 more source

High‐Performance Zero‐Gap Glycerol‐Fed Electrolyzer for C3 Chemicals and Hydrogen Production

open access: yesAdvanced Materials, EarlyView.
This work presents a dynamic, self‐regulating operation strategy that enables selective glycerol electrooxidation in the OER‐free regime, co‐producing C3 chemicals and hydrogen at cell voltages below 1.25 V. Voltage‐ and temperature‐resolved analyses define optimal operating conditions, achieving a sustained current density of 500 mA cm−2 at ∼1.21 V ...
Shayan Angizi   +11 more
wiley   +1 more source

Waste Heat Recovery in the Energy-Saving Technology of Stretch Film Production

open access: yesEnergies
The stretch film production is highly energy intensive. The components of the technological line are powered by electrical energy, and the heat is used to change the physical state of the raw material (granules).
Krzysztof Górnicki   +2 more
doaj   +1 more source

Highly Selective Adsorption of Fluorinated Gases by Porous Organic Cages – Effects of Fluorinated Side‐Chains

open access: yesAdvanced Materials, EarlyView.
A systematic study of a series of porous organic cages with perfluorinated alkyl side‐chains of different lengths is presented. The structure‐property relationship of the various cages on gas sorption of highly potent greenhouse gases, such as perfluorocarbons (PFCs), sulfur hexafluoride (SF6), and nitrogen trifluoride (NF3) is investigated.
Ke Tian   +8 more
wiley   +1 more source

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