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Research of Outdoor Thermal Environment and Solar Collector in Residential
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Research of Outdoor Thermal Environment and Solar Collector in Residential

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "G: Energy and Buildings".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 5935

Special Issue Editors

Dr. Fei Cao

E-Mail Website
Guest Editor
College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022, China
Interests: solar thermal engineering; solar photocatalysis; optical reactor design; photovoltaic/thermal system
Special Issues, Collections and Topics in MDPI journals
Dr. Yan Yang

E-Mail Website
Guest Editor
School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Interests: hydrogen production and utilization; photothermal and photocatalytic utilization of solar energy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The rapid growth in urban populations has led to an increase in housing demand and residential district construction—causing buildings to comprise an increasing proportion of energy consumption. The energy buildings use is mainly for electrical lighting, air conditioning, and hot water supply. The energy consumed in buildings is finally converted to thermal energy and is emitted to the environment, which leads to the heat island effect. The residential heat island effect not only affects the outdoor thermal comfort of residents, but also affects building energy consumption. Methods of decreasing the energy consumption of buildings, such as solar lighting, ground source heat pumps, and solar water heating, are of high significance in the drive to improve outdoor thermal environments.

Considering this context, the present Special Issue—“Research of Outdoor Thermal Environment and Solar Collector in Residential”—will discuss the most recent technology moving toward decreasing the energy consumption of buildings. Research articles, review articles, and short communications are warmly invited for submission. Topics include—but are not limited to—the following:

  • Energy demands and consumption in buildings;
  • Advanced lighting methods in buildings;
  • Energy efficiency improvement measures of HVAC;
  • Zero-energy buildings;
  • Life cycle energy efficiency of buildings;
  • Application of solar and other renewable energy sources in buildings;
  • Concentrating solar collectors.

We are writing to invite you to submit your original work to this Special Issue. We look forward to receiving your outstanding research submissions.

Dr. Fei Cao
Dr. Yan Yang
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

  • building energy consumption
  • solar lighting
  • HVAC
  • zero-energy building
  • solar concentrator
  • solar PV/T collector
  • solar water heating system

Published Papers (4 papers)

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Editorial

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3 pages, 174 KiB  
Editorial
Recent Advances in Residential Energy Utilization Technologies for Low-Carbon Emissions in China
by Fei Cao and Yan Yang
Energies 2023, 16(13), 5154; https://doi.org/10.3390/en16135154 - 04 Jul 2023
Viewed by 594
Abstract
In the past decade, renewable energy consumption in China has increased significantly [...] Full article
(This article belongs to the Special Issue Research of Outdoor Thermal Environment and Solar Collector in Residential)

Research

Jump to: Editorial

21 pages, 13070 KiB  
Article
Distribution Strategy Optimization of Standalone Hybrid WT/PV System Based on Different Solar and Wind Resources for Rural Applications
by Yan Yang, Qingyu Wei, Shanke Liu and Liang Zhao
Energies 2022, 15(14), 5307; https://doi.org/10.3390/en15145307 - 21 Jul 2022
Cited by 9 | Viewed by 1462
Abstract
The characteristics of solar and wind energy determine that the optimization of a standalone hybrid wind turbine (WT)/photovoltaic panel (PV) system depends on the natural resources of the installation location. In order to ensure system reliability and improve the resource utilization, a method [...] Read more.
The characteristics of solar and wind energy determine that the optimization of a standalone hybrid wind turbine (WT)/photovoltaic panel (PV) system depends on the natural resources of the installation location. In order to ensure system reliability and improve the resource utilization, a method for determining the installed capacity ratio of a hybrid renewable energy system is required. This study proposes a calculation method to optimize the installed capacity ratio, considering the system reliability to meet the needs of the hybrid system to adapt to different natural resources. In this paper, a standalone hybrid WT/PV system to provide electricity for rural areas is designed. Taking the power supply guarantee rate and electricity supply continuity as indicators, the system is simulated by using the Transient System Simulator solver. The results show that the recommended installed capacity ratio of the WT and PV is 5:1 when the total solar irradiation is less than 5040 MJ/(m2·a) and the annual average wind velocity is in the range of 3.0~3.5 m/s. When the annual average wind velocity is in the range of 2.0~3.0 m/s, the PV plays an increasingly significant role in the hybrid system and exceeds the WT if the total solar irradiation is greater than 6300 MJ/(m2·a). However, if the total solar irradiation and the annual average wind velocity are less than 5040 MJ/(m2·a) and 2.0 m/s, respectively, it is not recommended to use the standalone hybrid system because it cannot meet the power demand. These conclusions provide guidance for the distribution strategies of the standalone hybrid WT/PV system within different natural resources. Full article
(This article belongs to the Special Issue Research of Outdoor Thermal Environment and Solar Collector in Residential)
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19 pages, 10036 KiB  
Article
Comprehensive Performance Evaluation of a Dual-Function Active Solar Thermal Façade System Based on Energy, Economic and Environmental Analysis in China
by Rui Li and Guomin Cui
Energies 2022, 15(11), 4147; https://doi.org/10.3390/en15114147 - 05 Jun 2022
Cited by 3 | Viewed by 1377
Abstract
Promoting the development and utilization of solar energy is a practical way to alleviate the energy crisis and achieve the goal of carbon neutrality. Recently, interest has arisen in the dual-functional active solar thermal façade (ASTF) system that produces hot water throughout the [...] Read more.
Promoting the development and utilization of solar energy is a practical way to alleviate the energy crisis and achieve the goal of carbon neutrality. Recently, interest has arisen in the dual-functional active solar thermal façade (ASTF) system that produces hot water throughout the whole year and reduces cooling and heating load as a function of the building façade. Here, a mathematical model of the ASTF system is built and validated by the experimental data, and the annual performance of the ASTF system in representative cities in three climate regions is evaluated. The results are that compared with the common solar water system, the ASTF system adds passive energy savings, which accounts for 5.8%, 7.2% and 11.4% of the total primary energy savings of the system for Shanghai, Beijing and Lanzhou. Compared with the traditional wall, the ASTF saves 16.4% and 23.0% of cooling energy consumption and 102.3% and 92.4% of heating energy consumption for Shanghai and Beijing, respectively. Additionally, it saves 74.7% of heating energy consumption for Lanzhou. Lastly, the impact of the design parameters and operation parameters of the system are investigated, respectively. This study demonstrates a viable path to promoting cost-effective active solar thermal façades in different climates, and the results can be beneficial to further research. Full article
(This article belongs to the Special Issue Research of Outdoor Thermal Environment and Solar Collector in Residential)
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18 pages, 2345 KiB  
Article
Energy and Conventional and Advanced Exergy Analyses of Low-Temperature Geothermal Binary-Flashing Cycle Using Zeotropic Mixtures
by Yuan Zhao, Bowen Du, Shunyi Chen, Jun Zhao, Zhipeng Guo and Lingbao Wang
Energies 2022, 15(10), 3487; https://doi.org/10.3390/en15103487 - 10 May 2022
Cited by 3 | Viewed by 1600
Abstract
Due to its deep utilization of geobrine and its high net power output, the binary-flashing cycle (BFC) is deemed to be the future geothermal energy power generation technology. The working fluids considered in present analysis are zeotropic mixtures (R245/R600a). The system thermodynamic model [...] Read more.
Due to its deep utilization of geobrine and its high net power output, the binary-flashing cycle (BFC) is deemed to be the future geothermal energy power generation technology. The working fluids considered in present analysis are zeotropic mixtures (R245/R600a). The system thermodynamic model is built, and the energy and conventional and advanced exergy analyses are carried out to reveal the real optimization potential. It is demonstrated that the optimal ranges of R245fa mass fraction and working fluid dryness at the evaporator outlet are 0.30~0.50 and 0.40~0.60, considering the thermodynamic performance and the flammability of the zeotropic mixtures, simultaneously. Conventional exergy analysis indicates that the maximum exergy destruction occurs in the condenser, followed by the expander, evaporator, flashing tank, preheater, high-pressure pump and low-pressure pump. Meanwhile, the advanced exergy analysis reveals that the expander should be given the first priority for optimization, followed by the condenser and evaporator. The BFC has a large potential for improvement due to higher avoidable exergy destruction, about 48.6% of the total system exergy destruction can be reduced. Moreover, the interconnections among system components are not very strong, owing to small exogenous exergy destructions. It also demonstrates the effectiveness of advanced exergy analysis, and the approach can be extended to other energy conversion systems to maximize the energy and exergy savings for sustainable development. Full article
(This article belongs to the Special Issue Research of Outdoor Thermal Environment and Solar Collector in Residential)
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