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Published on: October 5, 2018
An Experimentally Validated Numerical Modeling Technique for Perforated Plate Heat Exchangers
M J White1, G F Nellis, S A Kelin
1Accelerator Division/Cryogenic Systems, Fermi National Accelerator Laboratory, Batavia, IL 60510.
Journal of Heat Transfer
|October 27, 2010
Summary
This study developed a validated numerical model for perforated plate heat exchangers, crucial for cryogenic and high-temperature systems. The model accurately predicts performance and internal temperatures, aiding in the design of compact, efficient heat management solutions.
Area of Science:
- Thermal Engineering
- Materials Science
Background:
- Compact heat exchangers with high axial conduction resistance are vital for cryogenic and high-temperature systems.
- Perforated plate heat exchangers offer a promising design using high-conductivity plates and low-conductivity spacers.
Purpose of the Study:
- To present and validate a numerical model for perforated plate heat exchangers.
- To account for axial conduction, parasitic heat loads, variable properties, and end conduction.
- To assess the suitability of these heat exchangers for cryosurgical probes.
Main Methods:
- Development of a comprehensive numerical model for perforated plate heat exchangers.
- Experimental validation using microelectromechanical systems (MEMS) fabricated heat exchangers.
- Integration of platinum resistance thermometers for in situ temperature measurements.
Main Results:
- The numerical model accurately predicts overall performance and internal temperature distribution.
- Experimental validation confirmed the model's predictive capabilities across various conditions.
- Demonstrated the feasibility of using perforated plate heat exchangers in cryosurgical applications.
Conclusions:
- The validated numerical model is a reliable tool for designing and optimizing perforated plate heat exchangers.
- These heat exchangers are suitable for applications requiring precise thermal control, such as cryosurgery.
- Integrated sensors enhance diagnostic capabilities for heat exchanger performance.
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