Small Thermoelectric System Applicable to Real-Time PCR Devices

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Small Thermoelectric System Applicable to Real-Time PCR Devices ( small-thermoelectric-system-applicable-real-time-pcr-devices )

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SS symmetry Article Experimental Performance Analysis of a Small Thermoelectric System Applicable to Real-Time PCR Devices Jae Hoon Chung 1 and Sehoon Jeong 2,3,4,* 1 2 3 4 * Correspondence: jeongsh@inje.ac.kr; Tel.: +82-55-320-4131 Received: 26 October 2020; Accepted: 21 November 2020; Published: 27 November 2020 Power Service BG, Doosan Heavy Industries & Construction, Changwon 51711, Korea; jaehoon.chung@doosan.com Department of Healthcare Information Technology, Inje University, Gimhae 50834, Korea Department of Information Communication System, Inje University, Gimhae 50834, Korea Paik Institute for Clinical Research, Inje University, Busan 47392, Korea Abstract: At the International Space Station (ISS), not only observation of the space environment, but also biological and medical research under weightlessness has been conducted. The efficient use of energy from waste heat from the ISS away from the Earth is very important to the efficient operation of the ISS. To develop a thermoelectric module that can be used for real-time polymerase chain reaction (PCR) machinery used in biological and medical research, we simulated and evaluated the thermoelectric waste heat recovery system. Specifically, the thermoelectric module was attached to a stainless steel duct, and a hot air blower was faced with the duct inlet. The power of the thermoelectric system was measured by controlling the temperature of the hot air inlet. Additionally, the thermoelectric performance was evaluated according to the heat sink attached to the cold side of the thermoelectric module. Here, we also found the optimal heat exchange factors to improve the power and efficiency of the thermoelectric module. In this regard, it is expected that the thermoelectric module development and analysis study using waste heat will play an important role in the biological and medical research that is being conducted at ISS by developing a real-time PCR utilizing it. Keywords: thermoelectric system; waste heat recovery; real-time polymerase chain reaction 1. Introduction The increasing presence of humans in orbit over the last 50 years has shown that humans can adapt to short-term space flight. However, we still know very little about the long-term exposure to the space flight environment and its health-related consequences. Future missions to other planets and space objects, such as Mars and the moon and asteroids, provide a remarkable scientific opportunity for space biologists to explore life’s ability to adapt to the environment of space flight during long-term missions. More specifically, the study of animals in space allows us to investigate the effect of gravity on biological development, an area of research that is not open to humans. The ISS era promises an opportunity to observe and test various features of animal development during long-term exposure to microgravity, as well as access to centrifuges where specimens can be exposed to partial gravity loads. Space probes such as Neurolab provided evidence that frogs and rats need critical periods of gravity for biological development. The ability to store animals on the ISS for multiple life cycles allows scientists to determine exactly how, when, where, and why these gravitational dependencies exist [1]. By studying experimental animals aboard the space probe, scientists can better understand the adaptive response of animals or humans to long-term space flight. The results of these missions can also help determine the requirements for optimal human health in space [2,3]. 􏰁􏰂􏰃 􏰅􏰆􏰇 􏰈􏰉􏰊􏰋􏰌􏰂􏰍 Symmetry 2020, 12, 1963; doi:10.3390/sym12121963 www.mdpi.com/journal/symmetry

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