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Energies
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Heat Transfer in Solar Collector
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Heat Transfer in Solar Collector

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A2: Solar Energy and Photovoltaic Systems".

Deadline for manuscript submissions: closed (15 August 2023) | Viewed by 3933

Special Issue Editors

Dr. Shuangcheng Sun

E-Mail Website
Guest Editor
1. Institute of New Energy System, National Innovation Center of Advanced Rail Transit Equipment, Zhuzhou 412001, China
2. School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China
Interests: optimization design of energy system; inverse heat transfer; renewable energy application; photo-thermal transfer and conversion
Special Issues, Collections and Topics in MDPI journals
Dr. Linyang Wei

E-Mail Website
Guest Editor
School of Metallurgy, Northeastern University, Shenyang 110819, China
Interests: solar energy storage; phase change material
Prof. Dr. Guangjun Wang

E-Mail Website
Guest Editor
School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China
Interests: thermal energy system analysis; solar energy utilization; thermal energy storage
Special Issues, Collections and Topics in MDPI journals
Dr. Hong Chen

E-Mail Website
Guest Editor
School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China
Interests: inverse heat transfer; coupled heat transfer analysis

Special Issue Information

Dear Colleagues,

Heat transfer analysis in solar collectors plays a tremendous role in the field of solar energy utilization. The Special Issue invites papers that focus on improving solar energy utilization to demonstrably reduce carbon emissions. Both research and review papers are encouraged. Research interests include but are not limited to the following list:

1) Solar energy storage;

2) Solar collector design;

3) Heat transfer modeling;

4) Photothermal conversion;

5) Inverse heat transfer analysis.

Dr. Shuangcheng Sun
Dr. Linyang Wei
Dr. Guangjun Wang
Dr. Hong Chen
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.

Keywords

  • heat transfer analysis in solar collectors
  • optimization design
  • phase change thermal energy storage
  • thermal property estimation
  • ISG and DSG solar collector
  • inverse modeling of solar collectors
  • inverse radiation analysis

Published Papers (3 papers)

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Research

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19 pages, 7256 KiB  
Article
Numerical Investigation of Heat Transfer and Flow Characteristics of Supercritical CO2 in Solar Tower Microchannel Receivers at High Temperature
by Xiaoru Zhuang, Haitao Wang, Haoran Lu, Zhi Yang and Hao Guo
Energies 2023, 16(18), 6445; https://doi.org/10.3390/en16186445 - 06 Sep 2023
Cited by 1 | Viewed by 748
Abstract
Using supercritical CO2 as a heat transfer fluid in microchannel receivers is a promising alternative for tower concentrating solar power plants. In this paper, the heat transfer and flow characteristics of supercritical CO2 in microchannels at high temperature are investigated by [...] Read more.
Using supercritical CO2 as a heat transfer fluid in microchannel receivers is a promising alternative for tower concentrating solar power plants. In this paper, the heat transfer and flow characteristics of supercritical CO2 in microchannels at high temperature are investigated by numerical simulations. The effects of microchannel structure, mass flow rate, heat flux, pressure, inlet temperature and radiation are analyzed and discussed. The results show that higher mass flow rate obtains poorer heat transfer performance with larger flow resistance of supercritical CO2 in microchannels at high temperature. The fluid and wall temperatures, average heat transfer coefficient and pressure drop all increase nearly linearly with the increases in heat flux and inlet temperature in the high-temperature region. Moreover, high pressure contributes to great hydraulic performance with approximate thermal performance. The effect of radiation on thermal performance is more pronounced than that on hydraulic performance. Furthermore, the optimized structures of inlet and outlet headers, as well as those of the multichannel in the microchannels, are proposed to obtain good temperature uniformity in the microchannels with relatively low pressure drop. The results given in the current study can be conducive to the design and application of microchannel receivers with supercritical CO2 as a heat transfer fluid in the third generation of concentrating solar power plants. Full article
(This article belongs to the Special Issue Heat Transfer in Solar Collector)
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12 pages, 3599 KiB  
Article
Study of Heat Flux Density of Dish Solar Cavity Heat Absorber
by Haiting Liu, Jiewen Deng, Yue Guan and Liwei Wang
Energies 2022, 15(21), 7946; https://doi.org/10.3390/en15217946 - 26 Oct 2022
Viewed by 940
Abstract
The solar cavity heat absorber is the core component of a solar thermal power generation system; its structure and installation position directly affect the efficiency of the heat absorber. To study the influence of these factors on the performance of the heat absorber, [...] Read more.
The solar cavity heat absorber is the core component of a solar thermal power generation system; its structure and installation position directly affect the efficiency of the heat absorber. To study the influence of these factors on the performance of the heat absorber, in this paper, a numerical simulation of dish solar collector optics is constructed based on the Monte Carlo method, and the distribution characteristics of heat flux density under different heat absorber structures and installation positions are analyzed. The results show that the heat flux density on the inner wall surface of the absorber has a linear relationship with the solar radiation intensity; under the same cavity depth, the energy received by the cylindrical, dome, and inverted cone absorbers is easier to deposit on the top. The heat flux density on the top surface of the inner cavity presents an annular distribution law. As the position of the heat absorber moves away from the dish solar collector surface, the top energy is gradually transferred to the circumferential surface. When the heat absorber is in position B, the total power ratio of different heat absorber structures entering the cavity can reach 99%. At this time, the circular type of heat absorber is more conducive to the full heat absorption of the working medium. Full article
(This article belongs to the Special Issue Heat Transfer in Solar Collector)
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Review

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23 pages, 3318 KiB  
Review
Recent Developments in Optical and Thermal Performance of Direct Absorption Solar Collectors
by Muzamil Hussain, Syed Khawar Hussain Shah, Uzair Sajjad, Naseem Abbas and Ahsan Ali
Energies 2022, 15(19), 7101; https://doi.org/10.3390/en15197101 - 27 Sep 2022
Cited by 4 | Viewed by 1438
Abstract
Solar energy is the most promising green energy resource, as there is an enormous supply of solar power. It is considered a good potential solution for energy crises in both domestic and industrial sectors. Nowadays, many types of solar systems are used for [...] Read more.
Solar energy is the most promising green energy resource, as there is an enormous supply of solar power. It is considered a good potential solution for energy crises in both domestic and industrial sectors. Nowadays, many types of solar systems are used for harvesting solar energy. Most of the research is focused on direct absorption solar collectors (DASCs) due to their ability to capture more solar energy. The effectiveness of DASCs is dependent on various factors, such as working fluid properties, geometry, and operating parameters. This review summarizes the impact of different design and operating parameters on the performance of DASCs. Many effective parameters are considered and their impact on optical and thermal properties is summarized. The influence of working fluid parameters, such as base fluid type, nanoparticle type, nanoparticle size, nanoparticle shape, and nanoparticle concentration on heat transfer performance, was discussed and their optimum range was suggested. The effects of collector dimensions and many novel design configurations were discussed. The effect of the most important operating parameters, such as temperature, flow rate, flow regime, and irradiance on collector performance, was briefly summarized. Full article
(This article belongs to the Special Issue Heat Transfer in Solar Collector)
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