The Thermal Environmental Control (TEC) of the Fluid Science Laboratory (FSL): a combined (Water/Air) thermal design solution for a Columbus Active Rack

Vaccaneo, Paolo; Gottero, Marco

doi:10.4271/2001-01-2374

Cited by 4 publications

(4 citation statements)

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“…There are two loop sections during the heat dissipation process: the secondary water loop (SWL) and the primary water loop (PWL). The former refers to an internal loop which provides cooling water to the experimental payloads in the rack, while the latter refers to a moderate temperature loop which routes the cooling fluid of the internal thermal control system of the space station to the intermediate heat exchanger of the SWL [ 8 ]. These two water loops are coupled by the intermediate heat exchanger.…”

Section: Controlled Object Description and The Intelligent Controlmentioning

confidence: 99%

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Dynamic Analysis and Intelligent Control Strategy for the Internal Thermal Control Fluid Loop of Scientific Experimental Racks in Space Stations

Cai

Wei

et al. 2020

Entropy

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Scientific experimental racks are an indispensable supporter in space stations for experiments with regard to meeting different temperature and humidity requirements. The diversity of experiments brings enormous challenges to the thermal control system of racks. This paper presents an indirect coupling thermal control single-phase fluid loop system for scientific experimental racks, along with fuzzy incremental control strategies. A dynamic model of the thermal control system is built, and three control strategies for it, with different inputs and outputs, are simulated. A comparison of the calculated results showed that pump speed and outlet temperature of the cold plate branch are, respectively, the best choice for the control variable and controlled variable in the controller. It showed that an indirect coupling thermal control fluid loop system with a fuzzy incremental controller is feasible for the thermal control of scientific experimental racks in space stations.

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Section: Controlled Object Description and The Intelligent Controlmentioning

confidence: 99%

“…In a few applications a heat exchanger is mounted within the experiment facility rack. Each side of the heat exchanger accommodates only one single loop flow, with the ITCS side being designated the cold side and the experiment rack the hot side [ 6 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis and Intelligent Control Strategy for the Internal Thermal Control Fluid Loop of Scientific Experimental Racks in Space Stations

Cai

Wei

et al. 2020

Entropy

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“…The thermal control system of the module experienced major parameter oscillation during the operation mode conversion, which was improved by updating the control algorithm on orbit [14]. Because the thermal control system in the rack is set to a fixed manual regulation mode, the regulation range between the loads in the rack is affected by the pressure difference outside the rack and the resistance characteristics of the regulation terminal; thus, it is impossible to realize on-orbit dynamic fine regulation between the loads in the rack [15,16]. In the "European Columbus", a parallel single-phase fluid loop is used as a thermal management tool to regulate the total pressure of the system based on the frequency conversion of the pump [17], resulting in less independence of thermal control resource regulation between loads.…”

Section: Introductionmentioning

confidence: 99%

Design and On-Orbit Performance of the Payload Rack Thermal Management System for China Space Station Experimental Lab Module

Guo,

Xie,

Xia

et al. 2024

Applied Sciences

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An efficient and reliable spacecraft payload thermal management method is one of the key problems to build China Space Station (CSS). Aiming at the outstanding characteristics and difficulties of the payloads rack in the experimental lab module of CSS, in the aspects of thermal control interface, boundary constraint, scale quantity, space layout, diversity of temperature control, operation mode and working life, etc., a two-stage thermal management scheme based on single-phase fluid loop is proposed and constructed. A fluid drive unit is designed to drive the fluid circulation and health management of the module thermal control bus (TCB). In view of the different characteristics of the payload racks, three different types of second-stage thermal control systems are proposed, and different thermal control terminals are designed, in order to solve the problem of thermal control resource allocation and health management in payload racks. A method based on “pump bypass” and “valve resistance ratio” is used to control the flow rate of the thermal management system. Based on the overall scheme of the thermal management system and the developed flight products, on-orbit verification and data analysis are carried out. Flight verification shows that the key parameters of the fluid loop in the thermal management system on orbit are basically consistent with the ground data; the maximum deviation is 1.84%. The pressure control accuracy of the bypass system reaches ±2%, and the active heat transfer efficiency of the integrated thermal management system is over 83%, which can effectively meet the thermal control requirements of the two-stage payloads in the module and rack. After on-orbit flight verification, the designed thermal control system works well on orbit and exhibits good stability.

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“…Chong-Chao He et al calculated that the thermal control scheme of combining air cooling and liquid cooling can better meet the different temperature control requirements of instruments and samples in the space test platform [18]. The EXPRESS rack, the European Drawer Rack (EDR) and the Fluid Science Laboratory (FSL) are all cooled by a combination of air and liquid cooling [19,20]. The air cooling system for the experimental payload is independent of the ventilation system in the cabin [21].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Air Cooling System for Scientific Payload Rack on a Space Station

Lou

Cai

et al. 2020

Energies

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The space scientific payload rack is a multifunctional experimental platform, and the requirements of the environmental temperature index are different for diversified experimental modules inside. The air cooling system is an important part of the rack thermal control system. A new type of air cooling system with small size and flexible arrangement is proposed in this paper, that is, micro air ducts with pinhole-sized air vents. The rack physical models of new and traditional air cooling modes are established, respectively. The numerical simulation of the inner air flow is carried out by Ansys Fluent CFD software (Ansys Inc., Canonsburg, PA, USA), which verifies that compared with the traditional method, the temperature field and flow field of the new air cooling method are more uniform, and the heat sources located at the edge of the rack can also be cooled better.

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The Thermal Environmental Control (TEC) of the Fluid Science Laboratory (FSL): a combined (Water/Air) thermal design solution for a Columbus Active Rack

Cited by 4 publications

References 0 publications

Dynamic Analysis and Intelligent Control Strategy for the Internal Thermal Control Fluid Loop of Scientific Experimental Racks in Space Stations

Dynamic Analysis and Intelligent Control Strategy for the Internal Thermal Control Fluid Loop of Scientific Experimental Racks in Space Stations

Design and On-Orbit Performance of the Payload Rack Thermal Management System for China Space Station Experimental Lab Module

Numerical Simulation of the Air Cooling System for Scientific Payload Rack on a Space Station

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