Browsing by Author "Berhanu, Tsion"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Adopting Building Integrated Photovoltaics (BIPV) for Harnessing Green Economy in Ethiopia: A Study on the Design, Modeling and Economic Analysis of Grid-Tied BIPV
    (Addis Ababa University, 2015-01) Berhanu, Tsion; Assefa, Abebayehu (PhD)
    Contrary to add-on Photovoltaics (PV), Building-integrated PV (BIPV) refers to the application of PV arrays where they are integral parts of the building envelope having the function of producing electricity as well. Ethiopia, as a country having average daily solar radiation of 5.2kWh/m2, can make use of this technology as a means of achieving the country’s goal of expanding electric power generation and green growth strategy. In addition, by producing power close to the point of use, the technology shall contribute to the reduction of the current 23% transmission and distribution losses encountered in the power system of the country. To this end, the opportunities of meeting some of the country’s electricity demand by introducing grid-tied BIPV in commercial and residential buildings of urban Ethiopia were investigated by taking the new Zemen Bank Headquarter 30-storey Building as a case study. A detailed design, simulation and economic analysis of a grid-tied BIPV system were conducted for four different scenarios of the building using PVsyst software. The results of the simulation showed that with an optimal design a significant amount of energy, 897,000kWh/year, which covers 69.54% of the estimated demand of the building can be generated. This can save up to 26,910USD per year based on the current electricity tariff of Ethiopia. The simulations of the four scenarios revealed that best results can be achieved by considering the system starting from the initial architectural design of the building rather than retrofitting an existing one. On the other hand, the economic evaluation resulted in an energy cost of US$0.11/kWh for the optimal design which is much higher than the prevailing electricity retail price of Ethiopia, US$0.03/kWh. From this it was concluded that grid-parity shall be achieved in the long run since the costs of PV modules is dropping while their efficiency is rising.
  • No Thumbnail Available
    Item
    Perception of tourism TVET students towards future employment opportunities in the tourism sector of Ethiopia: The Case of Catering and Tourism Training Institute (CTTI)
    (Elsevier, 2019-06) Berhanu, Tsion; Zeleke , Tesfaye (PhD)
    The tourism sector has been challenged with the problem of attracting and retaining quality employees globally. It is essential to understand the perceptions of tourism employment if today's students are to become the effective practitioners of tomorrow. This thesis examines final year TVET students’ perception towards the future job in the tourism sector in the context of Catering and Tourism Training Institute (CTTI). The study employs theoretical model of Kusluvan and Kusluvan’s (2000) on perception to assess Ethiopian students’ future career opportunities in the tourism sector. The main aim of the study is to assess the perception of students towards working in the tourism industry. Data were collected through survey questionnaire. About 169 questionnaires were distributed to final year Catering and Tourism students of CTTI. The data were analyzed using SPSS 16.0 version. Descriptive analyses; mean and standard deviation were employed to measure respondents’ perception towards future job and commitment towards working in the tourism industry. Independent sample t-test and Anova were used to test statistically whether significant differences or correlation occur between the respondents’ perception and incidents variables (region and department). According to this study Catering and Tourism Training Institute (CTTI) students’ perceptions of tourism career were generally positive and the students have currently strong commitment towards working in the tourism industry