Modeling of heat and mass transfer in a tec-driven lyophilizer

Zeng Guang Yuan; Uday Hegde; Eric Litwiller; Michael Flynn; John Fisher

doi:10.4271/2006-01-2185

Modeling of heat and mass transfer in a tec-driven lyophilizer

Zeng Guang Yuan^*, Uday Hegde, Eric Litwiller, Michael Flynn, John Fisher

^*Corresponding author for this work

Research output: Contribution to conference › Paper › peer-review

Abstract

Dewatering of wet waste during space exploration missions is important for crew safety as it stabilizes the waste. It may also be used to recover water and serve as a preconditioning step for waste compaction. A thermoelectric cooler (TEC)- driven lyophilizer is under development at NASA Ames Research Center for this purpose. It has three major components: (i) an evaporator section where water vapor sublimes from the frozen waste, (ii) a condenser section where this water vapor deposits as ice, and (iii) a TEC section which serves as a heat pump to transfer heat from the condenser to the evaporator. This paper analyses the heat and mass transfer processes in the lyophilizer in an effort to understand the ice formation behavior in the condenser. The analysis is supported by experimental observations of ice formation patterns in two different condenser units.

Original language	English (US)
DOIs	https://doi.org/10.4271/2006-01-2185
State	Published - Dec 1 2006
Event	36th International Conference on Environmental Systems, ICES 2006 - Norfolk, VA, United States Duration: Jul 17 2006 → Jul 20 2006

Other

Other	36th International Conference on Environmental Systems, ICES 2006
Country/Territory	United States
City	Norfolk, VA
Period	07/17/06 → 07/20/06

ASJC Scopus subject areas

Automotive Engineering
Safety, Risk, Reliability and Quality
Pollution
Industrial and Manufacturing Engineering

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10.4271/2006-01-2185

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title = "Modeling of heat and mass transfer in a tec-driven lyophilizer",

abstract = "Dewatering of wet waste during space exploration missions is important for crew safety as it stabilizes the waste. It may also be used to recover water and serve as a preconditioning step for waste compaction. A thermoelectric cooler (TEC)- driven lyophilizer is under development at NASA Ames Research Center for this purpose. It has three major components: (i) an evaporator section where water vapor sublimes from the frozen waste, (ii) a condenser section where this water vapor deposits as ice, and (iii) a TEC section which serves as a heat pump to transfer heat from the condenser to the evaporator. This paper analyses the heat and mass transfer processes in the lyophilizer in an effort to understand the ice formation behavior in the condenser. The analysis is supported by experimental observations of ice formation patterns in two different condenser units.",

author = "Yuan, {Zeng Guang} and Uday Hegde and Eric Litwiller and Michael Flynn and John Fisher",

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T1 - Modeling of heat and mass transfer in a tec-driven lyophilizer

AU - Yuan, Zeng Guang

AU - Hegde, Uday

AU - Litwiller, Eric

AU - Flynn, Michael

AU - Fisher, John

PY - 2006/12/1

Y1 - 2006/12/1

N2 - Dewatering of wet waste during space exploration missions is important for crew safety as it stabilizes the waste. It may also be used to recover water and serve as a preconditioning step for waste compaction. A thermoelectric cooler (TEC)- driven lyophilizer is under development at NASA Ames Research Center for this purpose. It has three major components: (i) an evaporator section where water vapor sublimes from the frozen waste, (ii) a condenser section where this water vapor deposits as ice, and (iii) a TEC section which serves as a heat pump to transfer heat from the condenser to the evaporator. This paper analyses the heat and mass transfer processes in the lyophilizer in an effort to understand the ice formation behavior in the condenser. The analysis is supported by experimental observations of ice formation patterns in two different condenser units.

AB - Dewatering of wet waste during space exploration missions is important for crew safety as it stabilizes the waste. It may also be used to recover water and serve as a preconditioning step for waste compaction. A thermoelectric cooler (TEC)- driven lyophilizer is under development at NASA Ames Research Center for this purpose. It has three major components: (i) an evaporator section where water vapor sublimes from the frozen waste, (ii) a condenser section where this water vapor deposits as ice, and (iii) a TEC section which serves as a heat pump to transfer heat from the condenser to the evaporator. This paper analyses the heat and mass transfer processes in the lyophilizer in an effort to understand the ice formation behavior in the condenser. The analysis is supported by experimental observations of ice formation patterns in two different condenser units.

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M3 - Paper

T2 - 36th International Conference on Environmental Systems, ICES 2006

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ER -

Modeling of heat and mass transfer in a tec-driven lyophilizer

Abstract

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