scispace - formally typeset
Search or ask a question
Author

Wu Yunna

Bio: Wu Yunna is an academic researcher from North China Electric Power University. The author has contributed to research in topics: Project management & Construction management. The author has an hindex of 7, co-authored 28 publications receiving 307 citations.

Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, a decision framework of SWHPS site selection is built based on the analytic hierarchy process method, the merits of this decision framework are that it can provide various rankings of alternatives and is easy to be used.

112 citations

Journal ArticleDOI
TL;DR: In this paper, the authors used literature statistics to determine the index of site selection scientifically and applied the Matter-Element Extension method and its improved version (Ideal Matter-element Extension method) to evaluate hybrid renewable sites.

55 citations

Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper proposed a five forces model for industry analysis of the Chinese shale gas market, showing the forces of supplier power, buyer power, threat of substitution, barriers to entry, and degree of rivalry.
Abstract: With the increasing of energy demand and environmental pressure, China government has been exploring a way to diversify energy supply. Shale gas development is becoming an important energy strategy in China in recent years due to giant shale gas reserves. However, the shale gas market is preliminarily shaping in China, so that many factors have great influence on its competition. To find these factors and to control them rationally is good for the cultivating Chinese shale gas market. Five forces model for industry analysis puts an insight into the competitive landscape of shale gas market by showing the forces of supplier power, buyer power, threat of substitution, barriers to entry, and degree of rivalry. Illustrating the key factors that affect competitive landscape provides a view into the situation of shale gas industry. The variation tendency of shale gas industry is analyzed by setting various scenarios. Finally some suggestions are proposed in order to keep the development of shale gas industry positively.

52 citations

Journal ArticleDOI
TL;DR: Wang et al. as discussed by the authors analyzed the status quo of technology, policy, cost, and competition of SG industry in China and built a system dynamics model to show various trends of Chinese SG industry under different scenarios.
Abstract: In order to ease environment pressure and alleviate the scarce problem of energy, Chinese government has begun to exploit and develop shale gas (SG) since 2009. However, the formation of competitive market is bristled with difficulties, due to its infancy, imperfect and lack of standardization. This paper firstly analyzes the status quo of technology, policy, cost, and competition of SG industry in China. Then a system dynamics (SD) model is built to show various trends of Chinese SG industry under different scenarios, which shows that technology, policy and cost all have effects on competitiveness. At last, the simulations reveal that the number of competitors in Chinese SG industry will arrive at its peak from 2019 to 2020. The corresponding recommendations have been presented: Chinese government should pay more attention on the perfection of laws and regulations of SG industry. And competitors should focus on increasing R&D investment.

35 citations

Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper gave a detailed review of green building development in China, and found out the defects and risks, which can be concluded that the major defects lie in the policy shortage, technology deficiency, and market immaturity.

34 citations


Cited by
More filters
Journal ArticleDOI
TL;DR: The history of US shale gas in this article is divided into three periods and based on the change of oil price (i.e., the period before the 1970s oil crisis, the period from 1970s to 2000, and the period since 2000), the US has moved from being one of the world's biggest importers of gas to being selfsufficient in less than a decade, with the shale gas production increasing 12fold (from 2000 to 2010).
Abstract: Extraction of natural gas from shale rock in the United States (US) is one of the landmark events in the 21st century. The combination of horizontal drilling and hydraulic fracturing can extract huge quantities of natural gas from impermeable shale formations, which were previously thought to be either impossible or uneconomic to produce. This review offers a comprehensive insight into US shale gas opportunities, appraising the evolution, evidence and the challenges of shale gas production in the US. The history of US shale gas in this article is divided into three periods and based on the change of oil price (i.e., the period before the 1970s oil crisis, the period from 1970s to 2000, and the period since 2000), the US has moved from being one of the world's biggest importers of gas to being self-sufficient in less than a decade, with the shale gas production increasing 12-fold (from 2000 to 2010). The US domestic natural gas price hit a 10-year low in 2012. The US domestic natural gas price in the first half of 2012 was about $2 per million British Thermal Unit (BTU), compared with Brent crude, the world benchmark price for oil, now about $ 80–100/barrel, or $14–17 per million BTU. Partly due to an increase in gas-fired power generation in response to low gas prices, US carbon emissions from fossil-fuel combustion fell by 430 million ton CO 2 – more than any other country – between 2006 and 2011. Shale gas also stimulated economic growth, creating 600,000 new jobs in the US by 2010. However, the US shale gas revolution would be curbed, if the environmental risks posed by hydraulic fracturing are not managed effectively. The hydraulic fracturing is water intensive, and can cause pollution in the marine environment, with implications for long-term environmental sustainability in several ways. Also, large amounts of methane, a powerful greenhouse gas, can be emitted during the shale gas exploration and production. Hydraulic fracturing also may induce earthquakes. These environmental risks need to be managed by good practices which is not being applied by all the producers in all the locations. Enforcing stronger regulations are necessary to minimize risk to the environment and on human health. Robust regulatory oversight can however increase the cost of extraction, but stringent regulations can foster an historic opportunity to provide cheaper and cleaner gas to meet the consumer demand, as well as to usher in the future growth of the industry.

630 citations

Journal ArticleDOI
Mevlut Uyan1
TL;DR: In this paper, the authors used GIS and AHP in the study area to determine suitable site selection for solar farms by using an equal interval classification method, and the final index model was grouped into four categories as "low suitable", "moderate", "suitable" and "best suitable".
Abstract: Renewable energy is clean sources and has a much lower environmental impact than other energy sources. In Turkey, solar energy investments have been developed rapidly in recent years. Site selection for solar farms is a critical issue for large investments because of quality of terrain, local weathering factors, proximity to high transmission capacity lines, agricultural facilities and environmental conservation issues. Multi criteria evaluation methods are often used for different site selection studies. The purpose of this study was to determine suitable site selection for solar farms by using GIS and AHP in the study area. The final index model was grouped into four categories as “low suitable”, “moderate”, “suitable” and “best suitable” with an equal interval classification method. As a result, 15.38% (928.18 km 2 ) of the study area has low suitable, 14.38% (867.83 km 2 ) has moderate suitable, 15.98% (964.39 km 2 ) has suitable and 13.92% (840.07 km 2 ) has best suitable for solar farms area. 40.34% (2434.52 km 2 ) of the study area is not suitable for solar farm areas.

374 citations

Journal ArticleDOI
TL;DR: In this article, the authors evaluated and selected the best location for utility-scale solar PV projects using geographical information systems (GIS) and a multi-criteria decision-making (MCDM) technique.

326 citations

Journal ArticleDOI
TL;DR: A review of the current state of the art in decision support methods applied to renewable and sustainable energy throughout the literature in the field of energy planning is presented in this article, where selected papers were classified by their year of publication, decision making technique, energy type, the criteria used, geographic distribution and the application areas.
Abstract: One of the problems facing researchers in the application of renewable energy systems is that the evaluation of the sustainability is extremely perplex. Decision making in energy projects requires consideration of technical, economic, environmental and social impacts and is often complicated. This paper presents a review of the current state of the art in decision support methods applied to renewable and sustainable energy throughout the literature in the field of energy planning. The selected papers were classified by their year of publication, decision making technique, energy type, the criteria used, geographic distribution and the application areas.

300 citations

Journal ArticleDOI
TL;DR: Newhuadu Business School Research Fund; China Sustainable Energy Program [G-1305-18257]; National Social Science Foundation of China [12ZD059], Ministry of Education [10 JBG 013] as discussed by the authors.

257 citations