Investigation on the development potential of rooftop PV system in Hong Kong and its environmental benefits

2013 ◽  
Vol 27 ◽  
pp. 149-162 ◽  
Author(s):  
Jinqing Peng ◽  
Lin Lu
Keyword(s):  
Hong Kong ◽  
Environmental Benefits ◽  
Pv System ◽  
Development Potential

scholarly journals Environmental Life-Cycle Analysis of Hybrid Solar Photovoltaic/Thermal Systems for Use in Hong Kong

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Tin-Tai Chow ◽  
Jie Ji
Keyword(s):  
Hong Kong ◽  
Life Cycle ◽  
Rectangular Channel ◽  
Good Alternative ◽  
Hot Water ◽  
Environmental Benefits ◽  
Solar Pv ◽  
Free Standing ◽  
Payback Time ◽  
Channel Type

While sheet-and-tube absorber is generally recommended for flat-plate photovoltaic/thermal (PV/T) collector design because of the simplicity and promising performance, the use of rectangular-channel absorber is also tested to be a good alternative. Before a new energy technology, like PV/T, is fully implemented, its environmental superiority over the competing options should be assessed, for instance, by evaluating its consumption levels throughout its production and service life. Although there have been a plenty of environmental life-cycle assessments on the domestic solar hot water systems and PV systems, the related works on hybrid solar PV/T systems have been very few. So far there is no reported work on the assessment of PV/T collector with channel-type absorber design. This paper reports an evaluation of the energy payback time and the greenhouse gas payback time of free-standing and building-integrated PV/T systems in Hong Kong. This is based on two case studies of PV/T collectors with modular channel-type aluminium absorbers. The results confirm the long-term environmental benefits of PV/T applications.

Performance of the Grid-Connected PV System in LV Microgrid Operation

2012 ◽  
Vol 512-515 ◽  
pp. 137-142
Author(s):  
Yan Li ◽  
Li Wang ◽  
Pan Pan Jing ◽  
Bin Bin Zhong ◽  
Bu Han Zhang ◽  
...  
Keyword(s):  
Power Systems ◽  
Power System ◽  
System Analysis ◽  
Low Voltage ◽  
Environmental Benefits ◽  
Pv System ◽  
Load Curve ◽  
Power System Analysis ◽  
Pv Penetration ◽  
Flexible Operation

Microgrids are a future power system configuration providing clear economic and environmental benefits compared to the legacy power systems, as the Grid-Connected PV penetration increases, its reaction in Low Voltage (LV) microgrid has to be taken into account during relative system studies. This paper presents a mathematical model for the Grid-Connected PV, it’s developed by User Define (UD) module on Power System Analysis Software Package (PSASP), PV behavior under several typical weather and typical 1-day load curve is studied in detail, Flexible Operation Strategy to achieve the reasonable voltage level are both considered, PSASP simulation environment is used to analyze the probable operation scenarios of LV microgrid, useful conclusions are summarized at last.

scholarly journals Designing of an off-grid Photovoltaic system with battery storage for remote location

TECCIENCIA ◽  
2021 ◽  
Vol 16 (31) ◽  
pp. 15-28
Author(s):  
Asad A. Naqvi ◽  
Talha Bin Nadeem ◽  
Ahsan Ahmed ◽  
Asad Ali Zaidi
Keyword(s):  
Energy Demand ◽  
Net Present Value ◽  
Energy Requirement ◽  
Maximum Energy ◽  
Environmental Benefits ◽  
Photovoltaic System ◽  
Solar Irradiation ◽  
Battery Storage ◽  
Pv System ◽  
Battery Capacity

Off-grid Photovoltaic (PV) system along with battery storage is very effective solution for electrification in remote areas. However, battery capacity selection is the most challenging task in system designing. In this study, an off-grid PV system along with battery storage is designed for the remote area of Karachi, Pakistan. The system is designed by considering the maximum energy requirement in summer season. The battery storage is selected to fulfill the energy demand during the night and cloudy seasons. On the basis of load, a total of 6 kW system is required to fulfill the energy demand. For such system, 925 Ah of battery is required to meet the energy requirement for a day in absence of solar irradiation. A regression-based correlation between battery capacity and energy demand is prepared for suitable battery sizing using Minitab. An economic analysis of the project is also carried out from which a net present value and simple payback are determined as USD 10,348 and 3 years, respectively. The environmental benefits are also been determined. It is found that the system will reduce around 7.32 tons of CO2 per annum which corresponds to the 183.69 tons of CO2 not produced in the entire project life.

scholarly journals Expansion of photovoltaic systems in multicampi higher education institutions: evaluation and guidelines

2021 ◽  
Vol 56 (4) ◽  
pp. 697-709
Author(s):  
Osvaldo Augusto Vasconcelos de Oliveira Lopes Da Silva ◽  
José Machado Moita Neto ◽  
Marcos Antônio Tavares Lira ◽  
Fabrício Higo Monturil de Morais
Keyword(s):  
Higher Education ◽  
Higher Education Institutions ◽  
Environmental Benefits ◽  
Pv System ◽  
Pv Systems ◽  
Performance Indexes ◽  
Federal Institute ◽  
General Goal ◽  
Solar Resource ◽  
Education Science

Considering the multicampi organizational structure of higher education institutions (HEIs), the expansion of photovoltaic (PV) systems previously installed in the facilities, the great potential for PV generation in Brazil, and the 2030 Agenda, the general goal of this research study is to evaluate and promote the expansion of the aforementioned PV systems. For this purpose, the PV system installed at the Federal Institute of Education, Science and Technology of Piauí comprising a future expansion is characterized by a thorough literature and documentary research. The solar resource available at the campuses of the institution was estimated using the second version of the Brazilian Atlas of Solar Energy. The technical–economic viability of the system expansion is assessed through the average parameters and minimum performance indexes required by the institution. Thus, it is possible to prove the effectiveness of the methodology to identify investment priorities and guide the construction and expansion of other PV systems, confirming that this process is technically and economically feasible as associated with strategic adherence, also bringing several environmental benefits.

Spatial Analysis of the Development Potential of a Commercial District: A Case of Hong Kong

2022 ◽  
Vol 148 (1) ◽  
Author(s):  
Jian Guo ◽  
Zhe Qin ◽  
Man Sing Wong ◽  
Siu Wai Wong ◽  
Stanley Yeung ◽  
...  
Keyword(s):  
Hong Kong ◽  
Spatial Analysis ◽  
Development Potential

Electric Mobility as Part of City Transportation Systems

2013 ◽  
Author(s):  
B. Weber ◽  
G. Chávez ◽  
M. D. Durán
Keyword(s):  
Hong Kong ◽  
Ecological Impact ◽  
International Energy Agency ◽  
The United States ◽  
Transportation Systems ◽  
Sustainable Transportation ◽  
Electric Mobility ◽  
Pv System ◽  
Return Of Investment ◽  
Average Consumption

Nowadays there is a trend that more people prefer to live in cities than in rural areas, so there is the necessity of different urbanization strategies with various transportation schemes. While in most cities in the US the population density is very low with an interval of 20 to 50 inhabitants per hectare, in cities like Hong Kong more than 250 inhabitants live on an area of one hectare. As a consequence transportation needs are different, for example gasoline driven cars as preferred transportation systems for US citizens, giving rise to an average consumption of 2000 liters per year for every inhabitant; in comparison to Hong Kong, where average consumption is only 300 Liters per year. So there is a great challenge to reduce these emissions. Apparently solutions are not planned in relation to studies by the International Energy Agency that places the United States as biggest crude oil producer in the year 2017, due the increments of tight oil exploitation. In the shown scenery electro mobility can be a solution for sustainable transportation, when it is combined with PV systems. This study starts with the feasibility of such a combination, and shows the coverage of population where this system can be implemented. From the analysis of economy results: It can be observed that the return of investment of a PV-system can be reduced when it is combined with electric mobility. Today cars driven by an electronic motor with cost of 0.035±0.015 USD/km afforded for transportation energy are more efficient than gasoline motors (based on fuel costs of 0.5±0.1 USD/km for economic cars with a coverage of 14 km/L). So it’s demonstrated that the return of investment is minor than 5 years for the PV system. It’s worth mentioning that charging batteries of electric cars could help to smooth energy peaks in the grid caused by renewables like sun and wind energy (a challenge for further grid systems). Besides the economic study the ecological impact has to be evaluated.

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