Results 31 to 40 of about 266,752 (314)

Research on Operation Optimization of Energy Cascade Utilization Heating Based on Exergy Analysis

open access: yesZhongguo dianli, 2023
In order to realize the optimization of energy cascade heating unit, An analysis-based evaluation model of heating economy is established, Got the whole plant efficiency, the heating index, And power generation coal consumption and heating coal ...
Jianjun HOU   +6 more
doaj   +1 more source

A Randomised Controlled Trial of an Energy Efficiency Intervention for Families Living in Fuel Poverty [PDF]

open access: yes, 2011
This paper discusses a pragmatic randomised controlled trial of a fuel poverty intervention undertaken in NE England over a four-year period, starting in 2000/2001.
Harrington, Barbara E.   +9 more
core   +1 more source

Heat flow and efficiency in a microscopic engine [PDF]

open access: yesThe European Physical Journal B, 2005
We study the energestics of a thermal motor driven by temperature differences, which consists of Brownian particles moving in a sawtooth potential with an external load where the viscous medium is alternately in contact with hot and cold heat reservoir. The motor can work as a heat engine or a refrigerator under different conditions.
B.-Q. Ai   +4 more
openaire   +2 more sources

Solar Heating, Cooling and Power Generation — Current Profiles and Future Potentials [PDF]

open access: yes, 2019
Due to the large amount of consumption of the fossil fuels, the ecological environment has suffered serious pollution and damage. Solar power technologies provide the best solution to the current energy and environment issues.
He, W., Zhang, Xingxing,
core   +1 more source

On the Efficiency of Heat Engines.

open access: yes, 2022
Abstract In a Gas Cylinder - Piston system, when the gas raises a mass M (on the piston) from a lower level z to an upper level z', then we say the gas has performed some work, W = Mg(z'-z). We can utilise two kinds of thermodynamic actions to enhance the height of the piston, without altering the mass on the piston.
openaire   +1 more source

Effect of Finite-Size Heat Source’s Heat Capacity on the Efficiency of Heat Engine [PDF]

open access: yesEntropy, 2020
Heat engines used to output useful work have important practical significance, which, in general, operate between heat baths of infinite size and constant temperature. In this paper, we study the efficiency of a heat engine operating between two finite-size heat sources with initial temperature difference.
openaire   +4 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

The research of heating efficiency of different induction heating systems

open access: yesMATEC Web of Conferences, 2017
Computer models of tape and coil inductors are described, and a comparison of the heating efficiency depending on various parameters is made. The developed computer model was made in the ELCUT 6.0.
Konesev Sergey   +3 more
doaj   +1 more source

Electrotechnological Heat Treatment of Milk: Energy and Exergy Efficiency

open access: yesТехника и технология пищевых производств, 2023
The dairy industry needs new and more energy-efficient technological procedure for milk pasteurization. This article introduces a comparative efficiency assessment of various milk pasteurization technologies and electrotechnological means.
Andrei A. Bagaev, Sergey O. Bobrovskiy
doaj   +1 more source

The efficiency of endoreversible heat engines with heat leak

open access: yesInternational Journal of Energy Research, 1995
Finite-time thermodynamics are used for studying the performance of endoreversible heat engines with heat leak. A comprehensive formulation and a general solution methodology, valid for any mode of heat supply or release, are presented. Detailed analyses are conducted for several heat transfer modes and universal analytical and numerical results for ...
F. Moukalled   +2 more
openaire   +1 more source

Home - About - Disclaimer - Privacy