• Journal of the Korean Society for Precision Engineering
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• v.28 no.2
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• pp.140-153
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• 2011

The objective of this paper is to investigate into the design of photbioreactor for mass production of microalgae. Characteristics of previously developed photobioreactors were examined to obtain design factors, including light transfer, fluid dynamics and metabolic reactions, of the photobioreactor. Design technology of components related to the design factors, such as light sources, photobioreactor cases, spargers, mixer, etc., was discussed to improve the viability and the growth rate of microalgal and productivity of the photobioreactor. Finally a principle direction of the design for an airlift flat plane photobiorectors was investigated.

• Journal of the Korean Society for Precision Engineering
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• v.28 no.2
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• pp.133-139
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• 2011

We have performed optical design of light guide plates (LGPs) for a photobioreactor by using an illumination design tool. An LGP having light emitting diodes (LEDs) as a light source on the four sides was designed by optimizing the distribution of LGP patterns and design of another LGP, on top of which sunlight was focused by a Fresnel lens, was executed. Finally, a hybrid-solar-and-LED-lighting scheme was described. Detailed design process and optical performances of the designed LGPs are presented.

• Biotechnology and Bioprocess Engineering:BBE
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• v.8 no.6
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• pp.313-321
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• 2003

This review summarizes the recent advances in high-density algal cultures in the field of algal biotechnology. Photobioreactor engineering for economical and effective utilization of algae and its products has made impressive and promising progress. Bioprocess engineers have expedited the design and the operation of algal cultivation systems. Many of them in use today are open systems due to cost considerations, and closed photobioreactors have recently attracted a considerable attention for the production of valuable biochemicals or for special applications. For high-density cultures, the optimization of environmental factors in the photobioreactors have been explored, including light delivery, CO$_2$and O$_2$gas transfer, medium supply, mixing and temperature. It is expected that further advanced photobioreactor engineering will enable the commercialization of noble algal products within the next decade.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.17 no.1
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• pp.48-56
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• 2018

Due to the growing concerns of energy resource depletion and environmental destruction, the mass production of microalgae has been studied. The scale-up of a photobioreactor (PBR) is required for the mass production of biomass. In this paper, the geometric parameters and oxygen transfer rate (OTR) are considered, to scale up a flat panel photobioreactor (FP PBR). The PBR is designed using the goal-driven optimization (GDO) method to accomplish the scale-up. The local sensitivity of each output parameter with respect to the input parameter is analyzed through the design of experiment (DOE), and the design candidates are evaluated with the screening sampling method. The volumetric mass transfer coefficient is measured by the dynamic method.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.10a
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• pp.955-956
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• 2012

• Journal of ILASS-Korea
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• v.19 no.3
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• pp.130-135
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• 2014

This study was performed to reveal the relationships between various gas supply conditions including inlet numbers and positions for Photobioreactor. To do that, this study was installed the experimental apparatus. All experiments were performed for the cases with 1, 2, 3, and 4 inlets and for gas flow rate of 4~8 lpm. Through the experiments, this study showed that the case with 3 or 4 inlets could reduce about 50% of the pressure loss head for all gas path than that of one inlet base case. So, these results can be used as basic data to design the gross or multiple photobioreactor.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.10a
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• pp.951-952
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• 2012

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.10a
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• pp.939-940
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• 2012

• Journal of the Korean Society for Precision Engineering
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• v.30 no.2
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• pp.143-147
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• 2013

We present results of the optical design and fabrication of a light-guiding plate (LGP) for a photobioreactor by using sunlight and a linear Fresnel lens. LGP patterns were designed by optical simulations with an illumination design tool, LightTools, and fabricated by using a computerized numerical control machine. Optical characteristics of average deviation of illuminance distribution and light throughput efficiency were measured and compared with simulation results.

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 2002.10a
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• pp.89-91
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• 2002