Development of a new vacuum-based photovoltaic/thermal collector, and its thermal and exergy analyses

Radwan, Ali; Katsura, Takao; Memon, Saim; Abo-Zahhad, Essam M.; Abdelrehim, Osama; Serageldin, Ahmed A.; Elmarghany, Mohamed R.; Khater, Asmaa; Nagano, Katsunori

doi:10.1039/d0se01102a

Cited by 19 publications

(11 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most important indicators regarding GB and EVs that affect energy sustainability in smart cities are presented in Table 4, which shows the indicators and sub-indicators for GBs and EVs [82][83][84][85][86][87][88][89][90][91][92][93][94]. The implementation of these indicators presented leads to the improvement of the residential life quality of the smart cities in the future.…”

Section: Required Indicatorsmentioning

confidence: 99%

Investigating Smart City Development Based on Green Buildings, Electrical Vehicles and Feasible Indicators

Razmjoo,

Nezhad,

Kaigutha

et al. 2021

Sustainability

Self Cite

View full text Add to dashboard Cite

With a goal of achieving net-zero emissions by developing Smart Cities (SCs) and industrial decarbonization, there is a growing desire to decarbonize the renewable energy sector by accelerating green buildings (GBs) construction, electric vehicles (EVs), and ensuring long-term stability, with the expectation that emissions will need to be reduced by at least two thirds by 2035 and by at least 90% by 2050. Implementing GBs in urban areas and encouraging the use of EVs are cornerstones of transition towards SCs, and practical actions that governments can consider to help with improving the environment and develop SCs. This paper investigates different aspects of smart cities development and introduces new feasible indicators related to GBs and EVs in designing SCs, presenting existing barriers to smart cities development, and solutions to overcome them. The results demonstrate that feasible and achievable policies such as the development of the zero-energy, attention to design parameters, implementation of effective indicators for GBs and EVs, implementing strategies to reduce the cost of production of EVs whilst maintaining good quality standards, load management, and integrating EVs successfully into the electricity system, are important in smart cities development. Therefore, strategies to governments should consider the full dynamics and potential of socio-economic and climate change by implementing new energy policies on increasing investment in EVs, and GBs development by considering energy, energy, techno-economic, and environmental benefits.

show abstract

Section: Required Indicatorsmentioning

confidence: 99%

Investigating Smart City Development Based on Green Buildings, Electrical Vehicles and Feasible Indicators

Razmjoo,

Nezhad,

Kaigutha

et al. 2021

Sustainability

Self Cite

View full text Add to dashboard Cite

show abstract

“…This epoch is characterized by the progress and enhancement of thermal machines [2]. It is imperative to mention that thermal comfort is also dependent on stress-free satisfaction of energy consumption, as such low-energy power generation [20,21] with PV integrated solar thermal systems [22][23][24], advanced smart building wall insulation technologies and smart windows [25,26] are growing in remote regions of the countries, where access to electric grid [27] is still under-development, and in fact a successful notion of smart cities with advanced insulation technologies where individual buildings could be self-energy reliant.…”

Section: Introductionmentioning

confidence: 99%

Thermophysics Analysis of Office Buildings with a Temperature–Humidity Coupling Strategy Under Hot-Arid Climatic Conditions

Bensafi

Ameur²,

Kaid

et al. 2021

Int J Thermophys

Self Cite

View full text Add to dashboard Cite

This study investigates the determining parameters of thermal comfort of office in an arid hot-arid environment of Bechar, located in the northwestern region of Algeria, in which the vertical walls of the room and the roof are subjected to solar irradiations and the floor is considered to be adiabatic. The solar flux is calculated by the ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) method. The predicted results are validated against the experimental results of the meteorological station of the ENERGARID research laboratory at the University of Bechar (Algeria). The characteristics of the ambient air flow are performed by using the computational fluid dynamics (CFD) software (Fluent). The flow fields, thermal fields, and humidity are investigated. An elaborated computer program (with Delphi language) is utilized to evaluate the temperature–humidity coupling as the most essential factors of the thermal comfort. A significant impact of dynamic temperatures and humidity on thermal comfort has been observed, especially in this hot-arid environment. Besides, a considerable effect of the flow velocity has been remarked. From the obtained results and to provide the best thermal comfort in such arid regions, the range of air velocity inside the building is recommended to be between 0.2 m·s−1 and 0.3 m·s−1.

show abstract

“…Either passive cooling or active cooling can be used [18][19][20][21][22]. The active cooling method employs Sustainability 2021, 13, 6084 2 of 12 water or nanofluid cooling methods [23], whereas the passive system employs thermoelectric Peltier modules [24] or vacuum insulation [25][26][27] to minimize the cumulative surface heat induction on PV panels.…”

Section: Introductionmentioning

confidence: 99%

Energy and Exergy Analyses on Seasonal Comparative Evaluation of Water Flow Cooling for Improving the Performance of Monocrystalline PV Module in Hot-Arid Climate

et al. 2021

Self Cite

View full text Add to dashboard Cite

Solar irradiation in hot-arid climatic countries results in increased temperatures, which is one of the major factors affecting the power generation efficiency of monocrystalline photovoltaic (PV) systems, posing performance and degradation challenges. In this paper, the efficiency of a water-flow cooling system to increase the output of a monocrystalline PV module with a rated capacity of 80 W is studied from both energy and exergy perspectives. The energy and exergy tests are performed for each season of the year, with and without cooling. The energy and exergy efficiencies, as well as the commodity exergy values, are used to compare the photovoltaic device with and without cooling. The findings are based on the experimental data that were collected in Tehran, Iran as an investigated case study in a country with a hot-arid climate. The findings show that when water-flow cooling is used, the values of the three efficiency metrics change significantly. In various seasons, improvements in regular average energy efficiency vary from 7.3% to 12.4%. Furthermore, the achieved increase in exergy efficiency is in the 13.0% to 19.6% range. Using water flow cooling also results in a 12.1% to 18.4% rise in product exergy.

show abstract

Development of a new vacuum-based photovoltaic/thermal collector, and its thermal and exergy analyses

Abstract: Photovoltaic-thermal (PV/T) solar collectors converts solar radiation into electrical power and heat. A considerable amount of received solar energy can be lost to the ambient from the top surface of...

Cited by 19 publications

References 42 publications

Investigating Smart City Development Based on Green Buildings, Electrical Vehicles and Feasible Indicators

Investigating Smart City Development Based on Green Buildings, Electrical Vehicles and Feasible Indicators

Thermophysics Analysis of Office Buildings with a Temperature–Humidity Coupling Strategy Under Hot-Arid Climatic Conditions

Energy and Exergy Analyses on Seasonal Comparative Evaluation of Water Flow Cooling for Improving the Performance of Monocrystalline PV Module in Hot-Arid Climate

Contact Info

Product

Resources

About