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Advanced Research on Supercritical Carbon Dioxide in Thermal Energy and...
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Advanced Research on Supercritical Carbon Dioxide in Thermal Energy and Power Engineering

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "B3: Carbon Emission and Utilization".

Deadline for manuscript submissions: closed (10 April 2023) | Viewed by 3435

Special Issue Editors

Prof. Dr. Jinliang Xu

E-Mail Website
Guest Editor
School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Interests: advanced power cycle and power generation systems; micro- and nano-scale heat transfer; multiphase flow and heat transfer; optofluidics technology and solar energy utilization
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Lu Liu

E-Mail Website
Guest Editor
Department of Power Engineering, North China Electric Power University, Baoding 071003, China
Interests: phase change heat and mass transfer; multiphase flow; heat transfer enhancement; flash spray
Prof. Dr. Lei Zhang

E-Mail Website
Guest Editor
Department of Power Engineering, North China Electric Power University, Baoding 071003, China
Interests: compressor; numerical simulation; rotating stall; fan

Special Issue Information

Dear Colleagues,

With the proposal of low carbon economy, supercritical carbon dioxide system has a wide application prospect in the future energy system because of its compact structure and high efficiency. Thus, relevant fundamental and practical research is necessary and urgent. The aims and topics of this Energies Special Issue on “Advanced Research on Supercritical Carbon Dioxide in Thermal Energy and Power Engineering” cover the cutting-edge research of supercritical carbon dioxide in the field of thermal energy and power engineering, including fundamental scientific research and frontier technology in energy conversion, power generation, energy storage, compressors, heat exchangers, etc.

The following topics, among others, are included in this issue:

  1. Numerical simulation and experiments of thermodynamic, fluid flow and heat transfer of supercritical carbon dioxide
  2. Application of supercritical carbon dioxide in advanced energy conversion, power generation and energy storage technology
  3. Thermo-hydraulic properties of supercritical carbon dioxide in renewable energy power generation systems
  4. Design and optimization of high-performance supercritical carbon dioxide compressors
  5. Design and optimization of high-performance supercritical carbon dioxide heat exchangers
  6. Enhanced heat transfer technology in supercritical carbon dioxide

Prof. Dr. Jinliang Xu
Prof. Dr. Lu Liu
Prof. Dr. Lei Zhang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (2 papers)

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Research

14 pages, 5637 KiB  
Article
The Methodological and Experimental Research on the Identification and Localization of Turbomachinery Rotating Sound Source
by Kunbo Xu, Yun Shi, Weiyang Qiao and Zhirong Wang
Energies 2022, 15(22), 8647; https://doi.org/10.3390/en15228647 - 17 Nov 2022
Cited by 4 | Viewed by 1050
Abstract
The localization and quantification of turbomachinery rotating sound sources is an important challenge in the field of aeroacoustics. In order to compensate the motion of a rotating sound source, a rotating beamforming technique is developed and applied in a flow duct, which uses [...] Read more.
The localization and quantification of turbomachinery rotating sound sources is an important challenge in the field of aeroacoustics. In order to compensate the motion of a rotating sound source, a rotating beamforming technique is developed and applied in a flow duct, which uses a wall-mounted microphone array placed circularly parallel to the fan, to detect the broadband noise source of the aeroengine fan. A simulation of three discrete rotating sound sources with a non-constant rotational speed is pursued to verify the effectiveness in reconstruction of the correct source positions and quantitative prediction of the source amplitudes. The technique is ulteriorly experimentally implemented at an axial low-speed fan test rig facility. The fan test rig has 19 rotor blades and 18 stator vanes, with a design speed up to 3000 rpm. The method can accurately identify the radial and circumferential positions of the three rotating sound sources in the simulation case, large side-lobes appear near the main-lobe of the sound source due to the geometric influence of the microphone array. A noticeable feature of beamforming images for axial flow fan is that the sound sources appear to be concentrated in the tip region rather than distributed along the span. Full article
(This article belongs to the Special Issue Advanced Research on Supercritical Carbon Dioxide in Thermal Energy and Power Engineering)
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14 pages, 4997 KiB  
Article
Experimental Investigation on Heat Transfer and Pressure Drop of Supercritical Carbon Dioxide in a Mini Vertical Upward Flow
by Haicai Lyu, Han Wang, Qincheng Bi and Fenglei Niu
Energies 2022, 15(17), 6135; https://doi.org/10.3390/en15176135 - 24 Aug 2022
Cited by 2 | Viewed by 1465
Abstract
Experiments on the convection heat transfer and pressure drop of supercritical carbon dioxide in a mini vertical upward flow were investigated in a smooth tube with an inner diameter of 2 mm. The experiments were conducted with pressures ranging from 7.62 to 8.44 [...] Read more.
Experiments on the convection heat transfer and pressure drop of supercritical carbon dioxide in a mini vertical upward flow were investigated in a smooth tube with an inner diameter of 2 mm. The experiments were conducted with pressures ranging from 7.62 to 8.44 MPa, mass fluxes ranging from 600 to 1600 kg·m−2·s−1, and heat flux ranging from 49.3 to 152.3 kW·m−2. Results show that the peak of heat transfer occurs when the bulk fluid temperature is below the proposed critical temperature and the wall temperature is above the proposed critical temperature. For the 2 mm vertical upward flow, the radial buoyancy effects are relatively weak, and the axial thermal acceleration effect cannot be negligible. In this study, a new modified Jackson correlation for the supercritical carbon dioxide is proposed for convective heat transfer. To reflect the effect of flow acceleration on heat transfer, a dimensionless heat flux was introduced to construct a new semi-correlation of heat transfer. The new correlation of friction factor taking into account the variation of density and dynamic viscosity was proposed with 146 experimental data within a ±20% error band. Full article
(This article belongs to the Special Issue Advanced Research on Supercritical Carbon Dioxide in Thermal Energy and Power Engineering)
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