Asaad H. Sayer¹, Mohsin E. Al-Dokheily¹, Hameed B. Mahood^2,*, Haider M. Khadem¹, Alasdair N. Campbell³

Energy Engineering, Vol.119, No.1, pp. 17-34, 2022, DOI:10.32604/EE.2022.017715 - 22 November 2021

Abstract Salinity Gradient Solar Ponds (SGSPs) offer the potential to capture and store solar energy for use in a range of domestic and industrial activities in regions with high solar insolation. However, the evaporation of water from these ponds is a significant problem that must be overcome for them to be deployed successfully. Thus, two ponds were constructed in the city of Nasiriya, Iraq. The two ponds were cylindrical with a diameter of 1.4 m and a total depth of 1.4 m. The water body in the two ponds was constructed with layer depths of 0.5,… More >

Oleksandr Kovalko¹, Tatiana Eutukhova², Oleksandr Novoseltsev^3,*

Energy Engineering, Vol.119, No.1, pp. 103-121, 2022, DOI:10.32604/EE.2022.017709 - 22 November 2021

Abstract The transition to low-carbon development has been recognized as one of the most important directions for the transformation of national economies in most countries. Today we can identify two of the most common service-oriented logical models of this transition. These are models of Service-Dominant Logic and Product-Service Systems that are used in this study to create a service-oriented platform for stimulating business development in the field of energy-related (ER) services. The establishment of such a platform is being considered based on the conceptual provisions of the global business ecosystem. Such a platform has been found… More >

Lei Zhang¹, Yinlong Yuan^1,*, Yihe Sun², Yun Cheng¹, Dian Wu¹, Lei Ren¹

Energy Engineering, Vol.119, No.1, pp. 387-405, 2022, DOI:10.32604/EE.2022.017463 - 22 November 2021

Abstract With the aggravation of energy problems, the development and utilization of new energy has become the focus of all countries. As an effective new energy, the fuel cell has attracted the attention of scholars. However, due to the particularity of proton exchange membrane fuel cell (PEMFC), the performance of traditional PI controlled phase-shifted full-bridge power electronics DC-DC converter cannot meet the needs of practical application. In order to further improve the dynamic performance of the converter, this paper first introduces several main topologies of the current mainstream front-end DC-DC converter, and analyzes their performance in… More >

Yi Liang^1,2, Haichao Wang^3,*, Wei-Chiang Hong⁴

Energy Engineering, Vol.119, No.1, pp. 163-188, 2022, DOI:10.32604/EE.2022.017396 - 22 November 2021

Abstract Photovoltaics (PV) has been combined with many other industries, such as agriculture. But there are many problems for the sustainability of PV agriculture. Timely and accurate sustainability evaluation of modern photovoltaic agriculture is of great significance for accelerating the sustainable development of modern photovoltaic agriculture. In order to improve the timeliness and accuracy of evaluation, this paper proposes an evaluation model based on interval type-2 Fuzzy AHP-TOPSIS and least squares support vector machine optimized by fireworks algorithm. Firstly, the criteria system of modern photovoltaic agriculture sustainability is constructed from three dimensions including technology sustainability, economic… More >

Hari Swarup Jammulamadaka¹, Bhaskaran Gopalakrishnan^2,*, Subodh Chaudhari³, Senthil Sundaramoorthy³, Akash Rajesh Mehta², Roseline Mostafa²

Energy Engineering, Vol.119, No.1, pp. 1-16, 2022, DOI:10.32604/EE.2022.017363 - 22 November 2021

Abstract Fenestration systems are widely used across the world. There is expansive research on window configurations, frames, and glazing technology, but not enough research has been published on reducing window heat loss through heat application to a pane. The presented study attempted to evaluate the performance of heated windows by developing an experimental setup to test a window at various temperatures by varying the power input to the window. Heated double pane window was installed in an insulated box. A temperature gradient was developed across the window by cooling one side of the window using gel-based… More >

Nugroho Agung Pambudi^*, Awibi Muhamad Yusuf, Alfan Sarifudin

Energy Engineering, Vol.119, No.1, pp. 275-286, 2022, DOI:10.32604/EE.2022.017356 - 22 November 2021

Abstract Data centers are recognized as one of the most important aspects of the fourth industrial revolution since conventional data centers are inefficient and have dependency on high energy consumption, in which the cooling is responsible for 40% of the usage. Therefore, this research proposes the immersion cooling method to solving the high energy consumption of data centers by cooling its component using two types of dielectric fluids. Four stages of experimental methods are used, such as fluid types, cooling effectiveness, optimization, and durability. Furthermore, benchmark software is used to measure the CPU maximum work with More >

Pradeep K. Majhi¹, Rifat Azam¹, Richa Kothari^2,*, Naveen Kumar Arora¹, V. V. Tyagi³

Energy Engineering, Vol.119, No.1, pp. 419-427, 2022, DOI:10.32604/EE.2022.016973 - 22 November 2021

Abstract Dyes are an integral part of the dying industry and have significantly resulted in environmental pollution by altering the standard water quality after their discharge into the water bodies. The culprits behind the altered water quality are the pretreatment chemicals used during dying manufacturing processes. Various advanced treatment methods using conventional and advanced treatment options including solar energy have been put forth by researchers for the treatment of the dying effluents but, these methods have not proved significantly considerable. Therefore, the present study intends to check the efficiency of solar parabolic trough collector for treating… More >

Sihua Wang^1,2, Junjun Wang^1,2,*, Lijun Zhou^1,2, Long Chen^1,2, Lei Zhao^1,2

Energy Engineering, Vol.119, No.1, pp. 219-236, 2022, DOI:10.32604/EE.2022.016899 - 22 November 2021

Abstract

Pollution flashover accidents occur frequently in railway OCS in saline-alkali areas. To accurately predict the pollution flashover voltage of insulators, a pollution flashover warning should be made in advance. According to the operating environment of insulators along the Qinghai-Tibet railway, the pollution flashover experiments were designed for the cantilever composite insulator FQBG-25/12. Through the experiments, the flashover voltage under the influence of soluble contaminant density (SCD) of different pollution components, non-soluble deposit density (NSDD), temperature (T), and atmospheric pressure (P) was obtained. On this basis, the GA-BP neural network prediction model was established. P, SCD, NSDD,

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M. Narendra Kumar^1,*, S. Manoj Kumar², G. C. Vijayakumar¹, K. Kadirgama^3,4, M. Samykano⁵, Krishna Venkatesh¹, H. B. Murlidhara¹

Energy Engineering, Vol.119, No.1, pp. 201-217, 2022, DOI:10.32604/EE.2022.016597 - 22 November 2021

Abstract This study computationally investigates the hydrodynamics of different serpentine flow field designs for redox flow batteries, which considers the Poiseuille flow in the flow channel and the Darcy flow porous substrate. Computational Fluid Dynamics (CFD) results of the in-house developed code based on Finite Volume Method (FVM) for conventional serpentine flow field (CSFF) agreed well with those obtained via experiment. The deviation for pressure drop was less than 5.1% for all the flow rates, thus proving the present CFD analysis’s validity on the modified variation of serpentine flow fields. Modified serpentine flow field-2 (MSFF2) design provided More >

Jinghua Wang¹, Leian Zhang¹, Xuemei Huang^1,*, Jinfeng Zhang², Chengwei Yuan¹

Energy Engineering, Vol.119, No.1, pp. 407-418, 2022, DOI:10.32604/EE.2022.016439 - 22 November 2021

Abstract Transverse crack often occurs in the trailing edge region of the blade when subjected to the excessive edgewise fatigue load. In this paper a refined model was established through local mesh refinement methods in order to investigate the initiation mechanism of crack and its extension in blade trailing edge. The material stress around the crack in trailing edge region under different thicknesses is calculated based on the fracture mechanics theory. The factors affecting the fatigue robustness of blade trailing edge are concluded by investigating the results of finite element analysis and coupons test. Compared with More >