Analysis of heat pumped augmented systems for spacecraft thermal control

Dexter, P.; Haskin, William L.

doi:10.2514/6.1984-1757

Cited by 9 publications

(3 citation statements)

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“…Through calculation and comparison, it is found that the higher the heat consumption is, the more obvious the advantage of the heat pump technology is. When the heat consumption reaches 10KW, the heat pump technology can reduce the quality of the thermal control system by 27%, and when the heat consumption reaches 100KW, the heat pump can reduce the quality of the thermal control system by 39% (Dexter and Haskin, 1984).…”

Section: Heat Pump Technologymentioning

confidence: 99%

Energy Harvesting and Thermal Management System in Aerospace

et al. 2022

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Energy harvesting and thermal management in spacecraft refer to the adjustment, distribution, and comprehensive use of uniform adjustment, allocation, and integrated use of the spacecraft and subsystems, which have the advantages of reducing energy consumption and improving the overall performance of the spacecraft. The study is first briefly elaborated on the research progress of energy harvesting and thermal management, and then introduces the key thermal control technology of thermal management, mainly thermal bus systems, heat pump technology, and passive thermal control technology. Finally, the future development direction and research focus of thermal management are proposed, which lays a foundation for the future development of energy harvesting and thermal management technology.

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Section: Heat Pump Technologymentioning

confidence: 99%

Energy Harvesting and Thermal Management System in Aerospace

et al. 2022

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“…Previous trade studies of the use of vapor compression cycles in spacecraft thermal control have found that heat pumps decrease the system mass in the 10-100 kW range when compared to a pumped loop system (Scaringe et al, 1989;Grossman, 1990;Grzyll, Scaringe, and Silvestri, 1991;Dexter and Haskin, 1984). More recent studies have confirmed the ability of a heat pump to reduce overall system mass, and found that operating at a low lift provided the most mass reduction (Scaringe and Grzyll, 2002;Grzyll, 2006).…”

Section: Introductionmentioning

confidence: 97%

Demonstration of a Plug-And-Play Approach to Spacecraft Thermal Control System Design

Maxwell¹,

Cole²,

Scaringe³

et al. 2008

AIP Conference Proceedings

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“…In 1977, Berner et al [2] of the European Space Agency proposed a vapor compression system as a single-stage refrigeration unit on a space station to provide the required low-temperature environment for food, pharmaceuticals, and other items. Subsequently, Dexter et al [3] revealed the potential of heat pumps for large spacecraft applications by comparing a singlephase fluid-thermal control system with an electrically driven heat pump system.…”

Section: Introductionmentioning

confidence: 99%

Influence of lubricating oil on heat transfer and pressure drop characteristics of R134a flow condensation in mini-channels

Peng,

Chao,

Wang

et al. 2024

Preprint

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In space refrigeration and heat pump systems, the presence of lubricating oil in mini-channel condensers introduces problems of reduced heat transfer efficiency and increased pressure drop. In this paper, the flow condensation of refrigerant R134a in a mini-channel under microgravity is investigated by numerical simulation, and the effects of lubricating oil on heat transfer and pressure drop are analyzed for different tube shapes, hydraulic diameters, and mass fluxes. It was found that as the lubricating oil concentration increases, the heat transfer coefficient decreases while the pressure gradient increases for the same vapor quality. This phenomenon is due to the fact that the presence of the lubricating oil increases the fluid viscosity and the viscous shear increases, leading to a reduction in the inertial forces and the relative velocity of the gas-liquid. Define the ratio of the condensation heat transfer coefficient of the oil-containing refrigerant to the condensation heat transfer coefficient of the pure refrigerant at the same operating condition as the "oil impact factor". When holding the oil concentration constant, the oil impact factor increases as the mass flow rate decreases and the channel hydraulic diameter increases. Moreover, as the refrigerant vapor quality decrease, the oil impact factor also exhibits an upward trend. This study provides optimization insights for the design and development of condensers used in space refrigeration/heat pump systems.

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Analysis of heat pumped augmented systems for spacecraft thermal control

Cited by 9 publications

References 0 publications

Energy Harvesting and Thermal Management System in Aerospace

Energy Harvesting and Thermal Management System in Aerospace

Demonstration of a Plug-And-Play Approach to Spacecraft Thermal Control System Design

Influence of lubricating oil on heat transfer and pressure drop characteristics of R134a flow condensation in mini-channels

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