Generating electrical energy by using air flow occurrence in underground metros
Başlık çevirisi mevcut değil.
- Tez No: 402450
- Danışmanlar: DR. PATRICIA WINFIELD
- Tez Türü: Yüksek Lisans
- Konular: Makine Mühendisliği, Mechanical Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2015
- Dil: İngilizce
- Üniversite: Oxford Brookes University
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Makine Mühendisliği Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 100
Özet
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Özet (Çeviri)
In this Project, a large amount of air flow is observed in“London Underground”which is created by the motion of the trains and therefore it is thought that waste but a new potential is that it can be used in generating electrical energy. As a result of literature review, similar studies have been found which are located in US, India and the third comes from Chinese developers. However, this project differs from others with various preferences such as the sites of turbine installation and turbine type. The wind turbines are considered to be installed in spots which contain the most amount of air flow rate and they are also considered to be installed on the inner surface of the tunnel walls just between the train and the tunnel. For the project, London Underground's Northern Line has been chosen as a reference line which has the most potential when it is compared to other lines, because of features such as train count, deep tunnel length, the number of passengers and so on. Some of the required data about the reference line have been compiled however; due to lack of some data, they were calculated with the help of existing ones or assumed. Considering the tunnel and train geometry, turbine type, size, number and power have been defined and with the suitable rate of scale they have been installed to the cross-sectional area theoretically. In case the main scenario does not work out, two other alternative scenarios have been considered. The first is to use new generation highly efficient horizontal axis wind jet turbines, the second alternative idea is using vertical axis conventional wind turbines and the last alternative is to adapt the new generation jet turbines to the back side of the trains instead of installing them on the tunnel and station surfaces. Wind turbines have been designed as sets and depending on their losses and efficiency coefficients, their power calculations have been obtained and their annual electrical energy generation has been identified. Considering the actual industrial average price of electrical energy in the UK, the financial value of the generated energy has been calculated and considering investment of turbines, their auxiliary equipment and also the cost of operation and maintenance a feasibility study has been done. This concluded that a set of turbines would generate 33,920 kWh annually in the base scenario. The total cost of the investment is expected to be 15441 GBP, Return on Investment (ROI) is 145.39 %, Payback Period is 11.01 Years and Internal Rate of Return (IRR) is estimated to be 8.44 %, Net Present Value is 11444 GBP according to the calculations and for lifetime taken as 20 years of the equipment.
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