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Cryogenic carbon dioxide cooling of ...

Sabliov, Cristina Mirela.

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Cryogenic carbon dioxide cooling of shell eggs: A finite element analysis of heat and mass transfer.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Cryogenic carbon dioxide cooling of shell eggs: A finite element analysis of heat and mass transfer./
作者:	Sabliov, Cristina Mirela.
面頁冊數:	156 p.
附註:	Directors: Brian E. Farkas; James H. Young; Kevin M. Keener.
Contained By:	Dissertation Abstracts International63-01B.
標題:	Agriculture, Food Science and Technology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3040786
ISBN:	0493541950

Cryogenic carbon dioxide cooling of shell eggs: A finite element analysis of heat and mass transfer.
Sabliov, Cristina Mirela.

Cryogenic carbon dioxide cooling of shell eggs: A finite element analysis of heat and mass transfer. - 156 p.

Directors: Brian E. Farkas; James H. Young; Kevin M. Keener.

Thesis (Ph.D.)--North Carolina State University, 2002.

<italic>Salmonella</italic> Enteritis growth on and within shell eggs can be significantly retarded if the eggs are cooled quickly after lay to an internal temperature of 7°C, or lower. As an alternative to conventional cooling of eggs using still air, cryogenic cooling in carbon dioxide has been shown to offer exceptional heat transfer rates, and thus short cooling times, as well as an improved egg quality.

ISBN: 0493541950Subjects--Topical Terms:

1017813
Agriculture, Food Science and Technology.

Cryogenic carbon dioxide cooling of shell eggs: A finite element analysis of heat and mass transfer.
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020 $a 0493541950
035 $a (UnM)AAI3040786
035 $a AAI3040786
040 $a UnM $c UnM
100 1 $a Sabliov, Cristina Mirela. $3 1252078
245 1 0 $a Cryogenic carbon dioxide cooling of shell eggs: A finite element analysis of heat and mass transfer.
300 $a 156 p.
500 $a Directors: Brian E. Farkas; James H. Young; Kevin M. Keener.
500 $a Source: Dissertation Abstracts International, Volume: 63-01, Section: B, page: 0009.
502 $a Thesis (Ph.D.)--North Carolina State University, 2002.
520 $a <italic>Salmonella</italic> Enteritis growth on and within shell eggs can be significantly retarded if the eggs are cooled quickly after lay to an internal temperature of 7°C, or lower. As an alternative to conventional cooling of eggs using still air, cryogenic cooling in carbon dioxide has been shown to offer exceptional heat transfer rates, and thus short cooling times, as well as an improved egg quality.
520 $a The goal of this research was to characterize the dynamics of cryogenic carbon dioxide cooling of shell eggs using numerical and experimental techniques. The following objectives were set: (1) to develop an image processing based method to measure volume and surface area of shell eggs, (2) to develop and test a mathematical model for heat transfer in shell eggs undergoing cryogenic cooling, (3) to develop and test a mathematical model for gas diffusion in shell eggs stored in carbon dioxide, and (4) to perform a parametric analysis of cryogenic cooling of shell eggs using the heat and mass transfer models developed.
520 $a The image processing based method developed to measure volume and surface area of shell eggs assumed that shell eggs had an axi-symmetric geometry formed of superimposed elementary frustums of right circular cones. The computed shell egg volumes and surface areas showed good agreement with experimental results.
520 $a The axi-symmetric unsteady state heat transfer model was formulated and then solved using the finite element method. The simulated data was used to develop a simple algebraic equation to identify combinations of processing parameters (temperature and convective heat transfer coefficient) to yield the desired egg temperature (7°C) at the end of cryogenic cooling.
520 $a Carbon dioxide concentration in eggs stored in 100% carbon dioxide for different periods of time was predicted using the mass transfer model. It was found that carbon dioxide concentration remained almost constant in the yolk, but it increased significantly in the albumen for the processing times studied. A simple equation was developed to correlate carbon dioxide concentration in eggs cooled in cryogenic carbon dioxide as a function of processing parameters, temperature and convective heat transfer coefficient.
590 $a School code: 0155.
650 4 $a Agriculture, Food Science and Technology. $3 1017813
650 4 $a Engineering, Agricultural. $3 1019504
690 $a 0359
690 $a 0539
710 2 0 $a North Carolina State University. $3 1018772
773 0 $t Dissertation Abstracts International $g 63-01B.
790 $a 0155
790 1 0 $a Farkas, Brian E., $e advisor
790 1 0 $a Keener, Kevin M., $e advisor
790 1 0 $a Young, James H., $e advisor
791 $a Ph.D.
792 $a 2002
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3040786