Design Optimization Method and Application of High-Efficiency and Variable-Pitch Axial Flow Fan by Lee Chan, Yang Sang Ho, Lee Sang Yeol

“…This paper describes servo motor–driven variable-pitch axial flow fan, and its optimal design method, process and application results for improving the efficiency of the variable-pitch fan. …”
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Influence of Different Climatic Regions on the Energy Efficiency Standard Index of Variable Refrigerant Flow System by Chen Huanxin, Zeng Yuke, Cheng Jianhong, Shao Shuangquan, Zhang Jianqiang, Chen Jin, Zhang Menghua

Subjects: “…variable refrigerant flow system…”
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Research on Variable Circulation Design Method and Internal Flow Characteristic of the Axial Flow Pump by Xuewei Yu, Qili Gan, Zifan Ling, Jiahui Gong, Jiajia Tang, Lijian Shi

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TECHNICAL PERFORMANCE ESTIMATION METHOD FOR GAS TURBINES WITH VARIABLE FLOW PATH GEOMETRY by Yu. M. Brodov, O. V. Komarov, V. L. Blinov, V. A. Sedunin, A. V. Skorohodov, E. P. Sozonov

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Control of Electric Drives in the Best Efficiency Region of Pumping System by Bakman Ilja

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Evaluating the efficiency of a parcel locker network: a case study of variable demand and storage duration in Pardubice city by Stefan Jovčić, Libor Bauer

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Optimizing Energy Efficiency and Sustainability in Winter Climate Control: Innovative Use of Variable Refrigerant Flow (VRF) Systems in University Buildings by Yolanda Arroyo Gómez, Julio F. San José-Alonso, Luis J. San José-Gallego, Javier M. Rey-Hernández, Ascensión Sanz-Tejedor, Francisco J. Rey-Martínez

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Experimental Results in a Variable-Pitch Wells Rotor by Fabio Licheri, Tiziano Ghisu, Francesco Cambuli, Pierpaolo Puddu, Mario Carta

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Thrust-efficiency limits of a swimming tail with variable chordwise flexural rigidity by Hossam Alqaleiby, Muhammad R. Hajj

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Efficiency problems of high-voltage variable frequency drives of the mcp of npp with wwer by V. A. Khrustalev, D. O. Bashlykov, M. V. Garievsky

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Energy efficiency and length modification of stilling basins with variable Baffle and chute block designs: A case study of the Fewa hydroelectric project by Dahal Vishan, Kunwar Subash, Regmi Ram Krishna, Neupane Shrawan

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Importance of Variable Turbine Efficiency in Run‐Of‐River Hydropower Design Under Deep Uncertainty by Veysel Yildiz, Solomon Brown, Charles Rougé

“…This paper is the first to integrate variable‐efficiency turbines into a hydropower plant design framework that accounts for design optimization as well as deep uncertainty in climatic and socio‐economic variables. …”
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Effects of variable thermo-physical characteristics on MHD ternary hybrid second-grade nanofluid in rotating Jeffery-Hamel flow by Ibrahim Mahariq, Rania Saadeh, Farhan Lafta Rashid, Ahmad Qazza, Mohamed Kezzar, Hamiden Abd El-Wahed Khalifa, Mohamed Rafik Sari

“…This research work presents the combined effect of variable electrical and thermal conductivity on the heat transfer of ternary hybrid nanofluids in second-grade flow between rotating non-parallel plates. …”
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Efficient and variable viscosity fracturing fluid of deep coal rock gas and popularization in ultimate volume fracturing by Bo LIN, Shuai CHEN, Xiangyang YAN, Mengqi CHEN, Liangjun DU, Heng CHEN, Hongsheng LU, Shuai SUN

“…By taking the advantage of SFY-2, a efficient and variable viscosity fracturing fluid is constructed to fit the design idea of coal rock gas Ultimate volume Fracturing, the variable viscosity control scheme is formulated and the construction technology is optimizated to achieve the goal of “Breaking” the coal rock sufficiently, creating complex sewing nets, filling sands fully and supporting effective. …”
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Investigation on variable properties in thermo-electroosmotic peristaltic flow by N. Naheed, S. Noreen, Muhammad Idrees Afridi

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Experimental Characterization of a Commercial Photovoltaic Thermal (PVT) Hybrid Panel Under Variable Hydrodynamic and Thermal Conditions by Jorge Aguilar, Wilson Pavon, Zahir Dehouche

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Assessing thermal performance: An experimental study on U-value variability in building fabric elements by H Alkhatib, P Lemarchand

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The Performance of Irrigation Schemes in Sudan Affected by Climate Variability and the Grand Ethiopian Renaissance Dam by Shamseddin M. Ahmed, Khalid G. Biro Turk, Hassan Ali Dinar

“…This study used datasets derived from the Moderate Resolution Imaging Spectroradiometer (MODIS), specifically the enhanced vegetation index (EVI) and crop water use efficiency (CWUE), alongside climate time-series data obtained from the Climate Research Unit, to evaluate the performance of irrigation schemes in Sudan affected by climate variability and the construction and filling of the GERD. …”
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Solving the Power Flow Problem in Transmission Networks Using Nonlinear complex-domain Modeling Via Julia Software by Oscar Danilo Montoya, Edwin Rivas-Trujillo, Walter Gil-González

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The Parabolic Variational Inequalities for Variably Saturated Water Flow in Heterogeneous Fracture Networks by Zuyang Ye, Qinghui Jiang, Chi Yao, Yanzhang Liu, Aiping Cheng, Shibing Huang, Yaning Liu

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