Cost Optimum Design of a Tropical Near Zero Energy House (nZEH)
Housing development, as part of economic development, must be supported by energy availability in order to achieve sustainable growth. One of the approaches to supporting renewable energy promotion is to design and build energy efficient housing. However, the optimal design of such buildings fac...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Universitas Indonesia
2019-04-01
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| Series: | International Journal of Technology |
| Subjects: | |
| Online Access: | http://ijtech.eng.ui.ac.id/article/view/1781 |
| Summary: | Housing
development, as part of economic development, must be supported by energy
availability in order to achieve sustainable growth. One of the approaches to
supporting renewable energy promotion is to design and build energy efficient
housing. However, the optimal design of such buildings faces two conflicting
requirements, namely the consideration of cost effectiveness and minimum
environmental impact. The high costs of energy efficient buildings, such as the
near Zero Energy House (nZEH), are due to the high price of the materials and
equipment used, such as photovoltaic (PV) panels, insulation and other
supporting materials. Indonesia is situated on the equator and benefits from
sunlight throughout the year. Nonetheless, this potential has not been fully
realized, as the solar-generated energy technology for housing comes at a high
price. Therefore, the objective of this study is to find the cost optimum
combination of validated design variables for an nZEH which suit the tropical
climate conditions of Indonesia. Experiments and a case study are employed in
the study to validate the design variables for an optimum nZEH design, which
include building orientation, PV panels, fenestration, and passive design. The
study finds that the cost optimum nZEH design achieved 72 percent site-energy
savings and 21 percent savings in the total Net Present Value (NPV) of life
cycle costs, with insignificant incremental initial construction costs in
enhancing the design.
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| ISSN: | 2086-9614 2087-2100 |