Theoretical model design for 0.5kW and 1kW of OSTEC using energy balance concept

Shu, Kim Lee and Jedol Dayou and Ejria Saleh (2015) Theoretical model design for 0.5kW and 1kW of OSTEC using energy balance concept. Advances in Natural and Applied Sciences, 9. pp. 135-140. ISSN 1995-0772 (P-ISSN) , 1998-1090 (E-ISSN)

Text Theoretical model design for 0.5kW and 1kW of OSTEC using energy balance concept _ABSTRACT.pdf Download (65kB)

Abstract

Background: Salinity and temperature differences between two bodies of water have been found useful in generating electricity. A new renewable energy system which is Ocean Salinity and Temperature Energy Conversion or OSTEC has been developed based on this principle. Theoretical prediction models which are Density Model and viscosity Model have been formulated to perform power output prediction of OSTEC system. Using Viscosity Model, it was found that the power output from the system increases with higher salinity and temperature difference between the two types of water. With this, an OSTEC prototype is intended to be installed at the Jetty in Universiti Malaysia Sabah for testing demonstration and power output assessment. Objective: In this paper, an inverse calculation approach is used to determine the required OSTEC parameter to generate 0.5kW and 1kW of electricity using energy balance concept. The calculation approach on OSTEC model is performed by including the efficiencies of the appropriate selection of turbine runner and dynamo generator. Results: It was found that with other dimensions are fixed, the required up-tube diameter to produce 1kW of electricity is 0.12m compared to 0.09m for 0.5kW. This is corresponding to the increase of 33% in up-tube diameter to double the power output. Conclusion: This finding will be used as a guideline to construct the OSTEC prototype in the vicinity of Universiti Malaysia Sabah

Item Type:	Article
Keyword:	Ocean salinity and temperature energy conversion , Ocean energy , Renewable energy , Energy balance , Electrical power , Energy conversion efficiency
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1-1570 Mechanical engineering and machinery > TJ807-830 Renewable energy sources
Department:	FACULTY > Faculty of Science and Natural Resources
Depositing User:	SAFRUDIN BIN DARUN -
Date Deposited:	25 Apr 2022 09:29
Last Modified:	25 Apr 2022 09:29
URI:	https://eprints.ums.edu.my/id/eprint/32375

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