Results 61 to 70 of about 209,208 (358)

Enhancing CoFe Catalysts with V2CTX MXene‐Derived Materials for Anion Exchange Membrane Electrolyzers

open access: yesAdvanced Functional Materials, EarlyView.
MXene dervied CoFe composites show increased initial Oxygen Evolution Reaction (OER) activity compared to the pure CoFe and MXene in an Anion Exchange Membrane device. Vanadium vacancies in the MXene plays a role in increased OER activity and hinders Fe leaching in the AEM device over using the pure V2C MXene as a support material for the CoFe ...
Can Kaplan   +16 more
wiley   +1 more source

Assessment of two-level heat pump installations’ power efficiency for heat supply systems

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2015
The problem of energy saving becomes one of the most important in power engineering. It is caused by exhaustion of world reserves in hydrocarbon fuel, such as gas, oil and coal representing sources of traditional heat supply.
Аlla Е. Denysova, Igor O. Bodnar
doaj   +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  

Micropatterned Biphasic Printed Electrodes for High‐Fidelity on‐Skin Bioelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Micropatterned biphasic printed electrodes achieve unprecedented skin conformity and low impedance by combining liquid‐metal droplets with microstructured 3D lattices. This scalable approach enables high‐fidelity detection of ECG, EMG, and EEG signals, including alpha rhythms from the forehead, with long‐term comfort and stability.
Manuel Reis Carneiro   +4 more
wiley   +1 more source

Waste Water Transformed into Heat Energy [PDF]

open access: yes, 2015
This study investigates the feasibility of utilising ground water ingress into the Glasgow Subway system. At present this unused excess water is being discharged into the city’s drainage system as waste. This valuable resource could be channelled through
Aaen, Bjorn   +4 more
core  

Controlled Aggregation of Pyrene‐Based Supramolecular Nanostructures for Light‐Driven Switchable H2 or H2O2 Production

open access: yesAdvanced Functional Materials, EarlyView.
This work reports the self‐assembly of a pyrene derivative into two distinct nanostructures and their application in visible‐light photocatalysis. The two nanostructures exhibit completely different yet complementary photocatalytic activities, promoting either H2 or H2O2 evolution.
Marianna Barbieri   +6 more
wiley   +1 more source

Energy Efficiency Technologies – Air Source Heat Pump vs. Ground Source Heat Pump

open access: yesJournal of Sustainable Development, 2009
Heat pump deserves the name of eco-innovation. It uses ‘free energy’ - warmth collected in the soil or in the air to provide heat ing and cooling. There are two main types of heat pumps – air source heat pump and ground source heat pump. How do they work? What are the benefits of each system? How do they compare?
openaire   +2 more sources

Composition and Resulting Band Alignment at the TiO2/InP Heterointerface: A Fundamental Study Combining Photoemission Spectroscopy and Theory

open access: yesAdvanced Functional Materials, EarlyView.
The chemical composition and band alignment are systematically investigated at the TiO2/InP heterointerface. Thin TiO2 films are deposited by ALD on atomically ordered, P‐terminated p‐InP(100). By combining UPS, XPS, and ab initio molecular dynamics, the atomistic structure and electronic alignment are revealed.
Mohammad Amin Zare Pour   +11 more
wiley   +1 more source

Numerical Analysis of Inlet–Outlet Leg Barriers in Vertical Borehole Heat Exchangers: A Strategy to Mitigate the Thermal Resistance

open access: yesGeotechnics
The efficiency of heat transfer through borehole heat exchangers is influenced by the thermal resistances of both the borehole and the surrounding soil. Optimizing these resistances can improve the heat transfer performance and reduce system costs.
Asfia Nishat, Hossam Abuel-Naga
doaj   +1 more source

Development of heat pump model based on outlet temperature of heat medium

open access: yesJapan Architectural Review, 2018
In this paper, we describe a new heat pump calculation model that achieves the following objectives: (i) demonstrates the influences of temperature, flow rate, and load ratio of the heating medium on the system; (ii) describes the system characteristics ...
Eisuke Togashi
doaj   +1 more source

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