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Title: USING LIGA BASED MICROFABRICATION TO IMPROVE OVERALL HEAT TRANSFER EFFICIENCY OF PRESSURIZED WATER REACTOR: I. Effects of Different Micro Pattern on Overall Heat Transfer.

Abstract

The Pressurized Water Reactors (PWRs in Figure 1) were originally developed for naval propulsion purposes, and then adapted to land-based applications. It has three parts: the reactor coolant system, the steam generator and the condenser. The Steam generator (a yellow area in Figure 1) is a shell and tube heat exchanger with high-pressure primary water passing through the tube side and lower pressure secondary feed water as well as steam passing through the shell side. Therefore, a key issue in increasing the efficiency of heat exchanger is to improve the design of steam generator, which is directly translated into economic benefits. The past research works show that the presence of a pin-fin array in a channel enhances the heat transfer significantly. Hence, using microfabrication techniques, such as LIGA, micro-molding or electroplating, some special microstructures can be fabricated around the tubes in the heat exchanger to increase the heat-exchanging efficiency and reduce the overall size of the heat-exchanger for the given heat transfer rates. In this paper, micro-pin fins of different densities made of SU-8 photoresist are fabricated and studied to evaluate overall heat transfer efficiency. The results show that there is an optimized micro pin-fin configuration that has the bestmore » overall heat transfer effects.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Southern University and A & M College, Baton Rouge, LA
Sponsoring Org.:
USDOE - National Nuclear Security Administration (NNSA)
OSTI Identifier:
889098
Report Number(s):
DOE/NA/27041-1
TRN: US0703121
DOE Contract Number:  
FG52-05NA27041
Resource Type:
Conference
Journal Name:
ICCE-14 FOURTEENTH ANNUAL INTERNATIONAL CONFERENCE ON COMPOSITES/NANO ENGINEERING
Additional Journal Information:
Conference: ICCE-14 Fourteenth International Conference on Composites or Nano Engineering; Boulder, Colorado; July 2 - 8, 2006
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; CONFIGURATION; COOLANTS; DESIGN; ECONOMICS; EFFICIENCY; ELECTROPLATING; HEAT EXCHANGERS; HEAT TRANSFER; PROPULSION; PWR TYPE REACTORS; STEAM; STEAM GENERATORS; WATER; Microfabrication; Heat transfer efficiency

Citation Formats

Zhang, M., Ibekwe, S., Li, G., Pang, S.S., and and Lian, K. USING LIGA BASED MICROFABRICATION TO IMPROVE OVERALL HEAT TRANSFER EFFICIENCY OF PRESSURIZED WATER REACTOR: I. Effects of Different Micro Pattern on Overall Heat Transfer.. United States: N. p., 2006. Web.
Zhang, M., Ibekwe, S., Li, G., Pang, S.S., & and Lian, K. USING LIGA BASED MICROFABRICATION TO IMPROVE OVERALL HEAT TRANSFER EFFICIENCY OF PRESSURIZED WATER REACTOR: I. Effects of Different Micro Pattern on Overall Heat Transfer.. United States.
Zhang, M., Ibekwe, S., Li, G., Pang, S.S., and and Lian, K. Sat . "USING LIGA BASED MICROFABRICATION TO IMPROVE OVERALL HEAT TRANSFER EFFICIENCY OF PRESSURIZED WATER REACTOR: I. Effects of Different Micro Pattern on Overall Heat Transfer.". United States. https://www.osti.gov/servlets/purl/889098.
@article{osti_889098,
title = {USING LIGA BASED MICROFABRICATION TO IMPROVE OVERALL HEAT TRANSFER EFFICIENCY OF PRESSURIZED WATER REACTOR: I. Effects of Different Micro Pattern on Overall Heat Transfer.},
author = {Zhang, M. and Ibekwe, S. and Li, G. and Pang, S.S. and and Lian, K.},
abstractNote = {The Pressurized Water Reactors (PWRs in Figure 1) were originally developed for naval propulsion purposes, and then adapted to land-based applications. It has three parts: the reactor coolant system, the steam generator and the condenser. The Steam generator (a yellow area in Figure 1) is a shell and tube heat exchanger with high-pressure primary water passing through the tube side and lower pressure secondary feed water as well as steam passing through the shell side. Therefore, a key issue in increasing the efficiency of heat exchanger is to improve the design of steam generator, which is directly translated into economic benefits. The past research works show that the presence of a pin-fin array in a channel enhances the heat transfer significantly. Hence, using microfabrication techniques, such as LIGA, micro-molding or electroplating, some special microstructures can be fabricated around the tubes in the heat exchanger to increase the heat-exchanging efficiency and reduce the overall size of the heat-exchanger for the given heat transfer rates. In this paper, micro-pin fins of different densities made of SU-8 photoresist are fabricated and studied to evaluate overall heat transfer efficiency. The results show that there is an optimized micro pin-fin configuration that has the best overall heat transfer effects.},
doi = {},
journal = {ICCE-14 FOURTEENTH ANNUAL INTERNATIONAL CONFERENCE ON COMPOSITES/NANO ENGINEERING},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {7}
}

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