Conceptual Design of a Condensing Heat Exchanger for Space Systems using Porous Media

Hasan, Mohammad M.; Khan, Lutful I.; Nayagam, Vedha; Balasubramaniam, R.

doi:10.4271/2005-01-2812

Cited by 12 publications

(6 citation statements)

References 7 publications

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“…This may be used in thermal and humidity control systems. This may be designed using porous media [11][12][13][14]. In essence, it comprises of fin surface which is water cooled to ensure condensation of moist air.…”

Section: Condensing Heat Exchangers (Chx)mentioning

confidence: 99%

Heat Transfer Equipment for Space Shuttle Orbiter, Its Main Engine (Aerojet Rocketdyne RS 25), Thermal (Passive and Active), Environmental Control and Life Support System

Rafique¹

2022

Preprint

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Space shuttle has been a hall mark of American space program since its inception. Despite its temporary shutdown few years ago, with the recent interest in space exploration which includes revitalizing human outpost in microgravity and transportation required to build it, realize other experiments (e.g. in space telescopes, in space manufacturing) and interplanetary voyages, it has regained attention. Its superior design, manufacturing, materials, performance, durability, and efficiency place it among the best, in fact, the only effort by mankind to build a reusable craft horizontally, launch vertically like a rocket and fly back like a plane. Various requirements emerge during its design (thermal, fluid, acoustics, vibration and structural) and design of its main engine (Aerojet Rocketdyne RS 25) which requires considerable attention, heat transfer being most important. This facilitated and necessitated use of various types of heat exchangers such as single coil, heat pipe, built in internal heat exchanger (IHEX), external heat exchanger (EHEX), condensing heat exchanger (CHEX), Interface heat exchangers (InHEX), regenerative heat exchanger (RHEX) and compact heat exchangers (CoHEX), change, manipulate and optimize their configurations in piping and instrumentation diagrams (PIDs). In this short narrative, an effort has been made to summarize them, and their developments over time with a focus on the application, design, manufacturing, materials, and performance (in service and final operation).

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Section: Condensing Heat Exchangers (Chx)mentioning

confidence: 99%

Heat Transfer Equipment for Space Shuttle Orbiter, Its Main Engine (Aerojet Rocketdyne RS 25), Thermal (Passive and Active), Environmental Control and Life Support System

Rafique¹

2022

Preprint

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“…The capillary techniques considered in this study can be divided into inertial separators (elbows and impingement separators) [4], and purely capillary separators [5,6,7]. Capillary separators (microchannels) can rely on porous media [8], hydrophilic/hydrophobic screens/membranes [9,10,11,12,13,14,15,16], or a combination of them. These membranous systems can also be employed as standalone separators.…”

Section: Capillary Techniquesmentioning

confidence: 99%

“…In order to ensure reliability and performance of a technology, often an active design approach is required, particularly for systems where contamination and variability of use can lead to poor, highly variable, or entirely unknown fluid conditions [4,5,6,7,8,9,10,11,12,13,14,15,16]. For example, LSS employing centrifugal separators for urine, humidity condensate separations, and space suit liquid separation [7].…”

Section: Introductionmentioning

confidence: 99%

Trade-off analysis of phase separation techniques for advanced life support systems in space

2021

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“…Numerous phase separation methods have been developed for microgravity conditions. Centrifuges 1,2 , forced vortical flows 3,4 , rocket firing 5,6 , membranes 7,8 , and surface-tensionbased technologies 9,10 , which include wedge geometries [11][12][13][14] , springs 15 , eccentric annuli 16 , microfluidic channels 17 , or porous substrates 18,19 , among others, are the most traditional solutions. As an alternative, the use of electrohydrodynamic forces has been studied since the early 1960s 20 and successfully tested for boiling [21][22][23] , two-phase flow management 24,25 , and conduction pumping 26 applications.…”

Section: Introductionmentioning

confidence: 99%

Magnetic phase separation in microgravity

et al. 2022

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The absence of strong buoyancy forces severely complicates the management of multiphase flows in microgravity. Different types of space systems, ranging from in-space propulsion to life support, are negatively impacted by this effect. Multiple approaches have been developed to achieve phase separation in microgravity, whereas they usually lack the robustness, efficiency, or stability that is desirable in most applications. Complementary to existing methods, the use of magnetic polarization has been recently proposed to passively induce phase separation in electrolytic cells and other two-phase flow devices. This article illustrates the dia- and paramagnetic phase separation mechanism on MilliQ water, an aqueous MnSO4 solution, lysogeny broth, and olive oil using air bubbles in a series of drop tower experiments. Expressions for the magnetic terminal bubble velocity are derived and validated and several wall–bubble and multi-bubble magnetic interactions are reported. Ultimately, the analysis demonstrates the feasibility of the dia- and paramagnetic phase separation approach, providing a key advancement for the development of future space systems.

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Conceptual Design of a Condensing Heat Exchanger for Space Systems using Porous Media

Cited by 12 publications

References 7 publications

Heat Transfer Equipment for Space Shuttle Orbiter, Its Main Engine (Aerojet Rocketdyne RS 25), Thermal (Passive and Active), Environmental Control and Life Support System

Heat Transfer Equipment for Space Shuttle Orbiter, Its Main Engine (Aerojet Rocketdyne RS 25), Thermal (Passive and Active), Environmental Control and Life Support System

Trade-off analysis of phase separation techniques for advanced life support systems in space

Magnetic phase separation in microgravity

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