Results 51 to 60 of about 2,967,352 (198)
Advanced Energy and Sustainability Research, EarlyView.The article attracts researchers, policymakers, and industry leaders in renewable energy, hydrogen, and sustainable development, as it addresses the critical need for clean, efficient energy solutions. By evaluating the technical, environmental, and economic feasibility of integrating wind energy with hydrogen production. The findings offer significant
Mohamed Elnaggar +4 more
wiley +1 more source
Entropy, 2003 : Based on a model of a two-heat-reservoir heat engine with a finite high-temperature source and bypass heat leak, the optimal configuration of the cycle is found for the fixed cycle period with another linear heat transfer law .
Chih Wu +3 more
doaj +1 more source
Current Landscape: Use of Supercritical CO2 in the Wood Industry
Advanced Energy and Sustainability Research, EarlyView.The application of supercritical carbon dioxide (scCO2) to successfully dewater as well as extract resin from wood is becoming increasingly popular due to its greener and less energy‐intensive approach. With world focus shifting to developing methods with greater efficiency while decreasing harm to the environment, scCO2 applications have begun to set ...
Anthony Dahdah, Subashani Maniam
wiley +1 more source
Quantum Carnot Bound from Petz Recovery Maps
Advanced Physics Research, EarlyView.A quantum bound (ηP$\eta_P$, the Petz Limit) is derived for the efficiency (η$\eta$) of a heat engine utilizing two‐level quantum systems (qubits) as the working substance. This limit, based on Petz recovery maps, is stricter than the classical Carnot limit (ηC$\eta_C$) for irreversible cycles.
Douglas Mundarain +2 more
wiley +1 more source
Regarding the application limitations of the Carnot, s theorem
Известия высших учебных заведений: Проблемы энергетики, 2019 The purpose of this article is to perform a comparative study of a reversible heat engine with an ideal or real gas as a working fluid and to determine the change in its efficiency depending on the thermodynamic characteristics of the working fluid.
V. G. Kiselev
doaj +1 more source
Construction and optimization of a quantum analog of the Carnot cycle. [PDF]
Physical review. E, Statistical, nonlinear, and soft matter physics, 2015 The quantum analog of Carnot cycles in few-particle systems consists of two quantum adiabatic steps and two isothermal steps. This construction is formally justified by use of a minimum work principle.
G. Xiao, J. Gong
semanticscholar +1 more source
High‐Temperature Heat Pump Test Bench with n‐Butane (R‐600) Generating Steam
Chemie Ingenieur Technik, EarlyView.This work involves building a test bench for a high‐temperature heat pump (HTHP) and analyzing the measurements. The focus is on steam generation using an HTHP to decarbonize process steam demand. The findings indicate that stable steam generation is possible, providing a higher heat transfer coefficient in the heat pump's condenser.
Sebastian Benkert +7 more
wiley +1 more source
Effect of Machine Entropy Production on the Optimal Performance of a Refrigerator
Entropy, 2020 The need for cooling is more and more important in current applications, as environmental constraints become more and more restrictive. Therefore, the optimization of reverse cycle machines is currently required.
Michel Feidt, Monica Costea
doaj +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Thermal charging cells (TCS) face two main challenges that limit their practical applications: 1) Still lacking the systems suitable for operation under higher temperature environments, and 2) there are limitations in the self‐sustaining performance of continuous discharge under temperature differences, which holds critical significance for the real ...
Tingting Meng, Yimin Xuan, Yunjie Xiong
wiley +1 more source
An Innovative Rural Heating System Utilizing Coupled Cascade Thermal Storage: A Performance Analysis
Energy Science &Engineering, EarlyView.Fig. 1. New rural heating system ABSTRACT This study presents a new rural heating system based on cascaded heat storage and air‐source heat pumps. Through a comparative analysis using the TRNSYS software between this system and the traditional solar‐assisted air‐source heat pump system, it was found that compared with the latter, the new system saves ...
Leilei Jiang +7 more
wiley +1 more source