Evaluation of bioclimatic potential, energy consumption, CO2-emission, and life cycle cost of a residential building located in Sub-Saharan Africa; a case study of eight countries

The focus of this paper is the design and implementation of solar PV deployment option, which is economical and easy to maintain for remote locations in less developed countries in Sub-Saharan Africa. The feasibility of stand-alone solar PV systems as a solution to the unstable electricity supply and as an alternative to the conventional resource, “diesel generators,” is presented. Moreover, a design of a system is carried out, such that the electrical demand and site meteorological data of a typical household in the capital, Banjul, is simulated. Likewise, the life cycle cost analysis to assess the economic viability of the system, along with the solar home performance, is also presented. Such system will be beneficial to the inhabitants of Gambia by ensuring savings in fuel costs and by reducing carbon emissions produced by generators. The selection of appropriate-sized components is crucial, as they affect the lifetime, reliability, and initial costs. The design presented in this study represents a solution for domestic houses to adopt the system according to the location and environment, in order to meet electricity demand.

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Multi-objective optimization of building design for life cycle cost and CO2 emissions: A case study of a low-energy residential building in a severe cold climate

Building Simulation ◽

10.1007/s12273-021-0796-5 ◽

2021 ◽

Author(s):

Qingwen Xue ◽

Zhaojun Wang ◽

Qingyan Chen

Keyword(s):

Life Cycle ◽

Co2 Emissions ◽

Life Cycle Cost ◽

Residential Building ◽

Building Design ◽

Cold Climate ◽

Low Energy ◽

Multi Objective Optimization ◽

Multi Objective

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Development of an Energy Saving Strategy Model for Retrofitting Existing Buildings: A Korean Case Study

Energies ◽

10.3390/en12091626 ◽

2019 ◽

Vol 12 (9) ◽

pp. 1626 ◽

Cited By ~ 4

Author(s):

Kwonsik Song ◽

Yonghan Ahn ◽

Joseph Ahn ◽

Nahyun Kwon

Keyword(s):

Life Cycle ◽

Energy Consumption ◽

Energy Saving ◽

Life Cycle Cost ◽

Cost Effective ◽

Existing Buildings ◽

Energy Retrofit ◽

Strategy Model ◽

Proposed Model

The building sector accounts for approximately 40% of national energy consumption, contributing to the environmental crisis of global warming. Using energy saving measures (e.g., improved thermal insulation, highly energy-efficient electrical and mechanical systems) provides opportunities to reduce energy consumption in existing buildings. Furthermore, if the life cycle cost (i.e., installation, operation and maintenance cost) of the measures is considered with their energy saving potential, it is possible to establish a cost-effective energy retrofit plan. Therefore, this research develops an energy saving strategy model considering its saving potential and life cycle cost of the measures for reducing energy consumption in existing buildings. To test the validity of the proposed model, a case study is carried out on an educational facility in South Korea, in response to its overconsumption of energy. The results demonstrate that in terms of energy saving and life cycle cost, the optimal energy retrofit plan is more cost-effective than the existing plan. Also, the break-even point for the optimal energy retrofit plan is within five years, and then revenue from energy saving continually occurs until 2052. For energy retrofit of existing buildings, using the proposed model would enable building owners to maximize energy savings while minimizing the life cycle cost.

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