Electric and lighting energy audit: A case study of selective commercial buildings in Dhaka

Rayhana, Rakiba; Khan, Asif; Hassan, Tahsin; Datta, Ratan; Chowdhury, A. Hasib

doi:10.1109/wiecon-ece.2015.7443923

Cited by 10 publications

(4 citation statements)

References 4 publications

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“…The building must have windows and doors to archive more sunlight. In [27], the author conducted an energy audit survey of two commercial buildings in Dhaka. It was found out that 8 to 15% of electrical equipment are not efficient and 28 to 45% of electrical energy can be saved in the lighting section.…”

Section: Literature Reviewmentioning

confidence: 99%

Energy Audit and Feasibility of Solar PV Energy System: Case of a Commercial Building

Chisale

Mangani

2021

Journal of Energy

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Energy situation in Malawi is continuing facing critical challenges to satisfy the existing demand. However, energy consumption and energy conservation studies have been neglected to help overcome this problem. In this paper, electric energy audit was conducted for a commercial building in Mchinji, Malawi, in order to identify energy-saving opportunities. The study employed a mixed method research which involved a series of surveys, observation, data collection, and analysis. The current energy consumption was determined and compared with the proposed energy consumption after replacing some equipment. The proposed system saved up to 33.46% of energy. The study also suggested behavior change towards energy saving. Additionally, an alternative energy system was also suggested. Thus, the HOMER software was employed to design, optimize, and analyze a solar-battery-grid-connected energy system. The proposed system has a simple payback period of 9.8 years. The system’s cost of energy was estimated as 0.0372 $/kWh, and the capital cost was $ 150,887.

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Section: Literature Reviewmentioning

confidence: 99%

Energy Audit and Feasibility of Solar PV Energy System: Case of a Commercial Building

Chisale

Mangani

2021

Journal of Energy

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“…The electricity supply in India in 2012 was insufficient to meet the demands of the country due to the space cooling needs. The Bureau of energy efficiency (BEE) in India has standardized the levels and labels for users to compare the efficiency of air conditioners that could save nearly 14% of the projected electricity consumption by 2020 [76]. Therefore, the building sector is a major contributor to energy consumption and is an essential part of reviewing energy and development of IPB.…”

Section: Significance Of Building Energy Consumptionmentioning

confidence: 99%

An Overview on Energy and Development of Energy Integration in Major South Asian Countries: The Building Sector

et al. 2020

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India, Pakistan, and Bangladesh (IPB) are the largest South Asian countries in terms of land area, gross domestic product (GDP), and population. The growth in these countries is impacted by inadequate renewable energy policy and implementation over the years, resulting in slow progress towards human development and economic sustainability. These developing countries are blessed with huge potential for renewable energy resources; however, they still heavily rely on fossil fuels (93%). IPB is a major contributor to the total energy consumption of the world and its most energy-intensive building sector (India 47%, Pakistan 55% and Bangladesh 55%) displays inadequate energy performance. This paper comprehensively reviews the energy mix and consumption in IPB with special emphasis on current policies and its impact on economic and human development. The main performance indicators have been critically analyzed for the period 1970–2017. The strength of this paper is a broad overview on energy and development of energy integration in major South Asian countries. Furthermore, it presents a broad deepening on the main sector of energy consumption, i.e., the building sector. The paper also particularly analyzes the existing buildings energy efficiency codes and policies, with specific long-term recommendations to improve average energy consumption per person. The study also examines the technical and regulatory barriers and recommends specific measures to adapt renewable technologies, with special attention to policies affecting energy consumption. The analysis and results are general and can be applied to other developing countries of the world.

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“…It is assumed that the integrated solar output is less than the total power demand of the building at any given time and hence the system consumes deficit power from the grid. The daily load demand in a commercial university building in Bangladesh is approximately 122.3kWh (Rayhana et al 2015). On the other hand, the daily energy output of the installed solar modules is 19.54kWh (4,280,058 kWh in its project lifetime) which is only a fraction of the total load demand of the building.…”

Section: Project Description and Meteorological Datamentioning

confidence: 99%

The economic prospect of rooftop photovoltaic (PV) system in the commercial buildings in Bangladesh: a case study

Datta

Kalam

Shi

2020

Clean Techn Environ Policy

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The research investigates the financial and environmental implications of roof-top PV installation in a case study of commercial buildings in Bangladesh. With annual horizontal solar radiation of 4.65 kWh/m 2 /d, Bangladesh has a great potential to avail sustainable solar energy which would have environmental and economic ramifications. To accomplish this, the simulation has been carried out using the RETScreen software. To perform the calculation, the climatic data from NASA for the selected location has been considered. Numerous economic indices encompassing net present value, payback period, internal rate of return and benefit-cost ratio have been taken into consideration as a measure of performance indicator for the enacted project. The determined economic outcome of the case study points out a net present value of $756,896 with 14.2% internal rate of return, 10.1 years simple payback time, 8.1 years equity payback and 1.5 benefit-cost ratio which implies that the project is remarkably appealing. In addition, the sensitivity analysis of the project highlights that the profitability of the investment is protected in most of the cases for ±30% variation in input parameters. For example, initial and fuel costs of the proposed case may generate a negative net present value beyond 15% variations. However, a positive net present value within the wide sensitivity ranges for fuel costs base case, operation and maintenance costs, fuel cost escalation and discount rate, debt ratio and debt term imply economic feasibility is still obvious. This may encourage the building owner to incorporate solar PV in commercial buildings in Bangladesh.

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Electric and lighting energy audit: A case study of selective commercial buildings in Dhaka

Cited by 10 publications

References 4 publications

Energy Audit and Feasibility of Solar PV Energy System: Case of a Commercial Building

Energy Audit and Feasibility of Solar PV Energy System: Case of a Commercial Building

An Overview on Energy and Development of Energy Integration in Major South Asian Countries: The Building Sector

The economic prospect of rooftop photovoltaic (PV) system in the commercial buildings in Bangladesh: a case study

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