Matrix heat exchangers and their application in cryogenic systems

Venkatarathnam, G.; Sarangi, Sunil

doi:10.1016/0011-2275(90)90150-b

Cited by 48 publications

(18 citation statements)

References 45 publications

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“…Fig. 12 also represents data of matrix heat exchanger research presented by Venkatarathnam and Sarangi [7] and Krishnakumar and Venkatarathnam [20] in which different researchers work is present: matrix heat exchangers with shifted holes and shifted slots from Subbotin's work, Venkatarathnam [ The difference in the data for the Nusselt number correlations above can be attributed to the different test parameters each of the authors presented. For example, Dorignac's et al [22] data was based on a perforated plate with large diameter perforations: on the order of 10 mm.…”

Section: Application To the Matrix Heat Exchangermentioning

confidence: 86%

“…The experimental apparatus shown in Fig. 2, consisted of a water pump (1), a test section (2), a heater block (3), thermocouples (4), power source (5), data reader (6), data acquisition computer (7), and the porous medium test section (8).…”

Section: Laboratory Modelmentioning

confidence: 99%

“…Perforated sheets have also been widely used in the heating of air for building/office-space air conditioning. Venkatarathnam and Sarangi [7] and Venkatarathnam [8] studied characteristics of heat transfer and fluid flow through actual MHEs. Venkatarathnam [8] then proceeded to solve numerical models in which to compare actual laboratory results.…”

Section: Introductionmentioning

confidence: 99%

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The thermal modeling of a matrix heat exchanger using a porous medium and the thermal non-equilibrium model

Hayes

Khan

Shaaban

et al. 2008

International Journal of Thermal Sciences

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Section: Application To the Matrix Heat Exchangermentioning

confidence: 86%

Section: Laboratory Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The thermal modeling of a matrix heat exchanger using a porous medium and the thermal non-equilibrium model

Hayes

Khan

Shaaban

et al. 2008

International Journal of Thermal Sciences

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“…Jeheon and Jeong [4] discussed a perforated plate heat exchanger fabricated from copper plates separated by Kapton spacers. Venkatarathnam and Sarangi [5] presented a review of perforated plate heat exchangers and their manufacture and application.…”

Section: Introductionmentioning

confidence: 99%

An Experimentally Validated Numerical Modeling Technique for Perforated Plate Heat Exchangers

White

Nellis

Klein

et al. 2010

Journal of Heat Transfer

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Cryogenic and high-temperature systems often require compact heat exchangers with a high resistance to axial conduction in order to control the heat transfer induced by axial temperature differences. One attractive design for such applications is a perforated plate heat exchanger that utilizes high conductivity perforated plates to provide the stream-to-stream heat transfer and low conductivity spacers to prevent axial conduction between the perforated plates. This paper presents a numerical model of a perforated plate heat exchanger that accounts for axial conduction, external parasitic heat loads, variable fluid and material properties, and conduction to and from the ends of the heat exchanger. The numerical model is validated by experimentally testing several perforated plate heat exchangers that are fabricated using microelectromechanical systems based manufacturing methods. This type of heat exchanger was investigated for potential use in a cryosurgical probe. One of these heat exchangers included perforated plates with integrated platinum resistance thermometers. These plates provided in situ measurements of the internal temperature distribution in addition to the temperature, pressure, and flow rate measured at the inlet and exit ports of the device. The platinum wires were deposited between the fluid passages on the perforated plate and are used to measure the temperature at the interface between the wall material and the flowing fluid. The experimental testing demonstrates the ability of the numerical model to accurately predict both the overall performance and the internal temperature distribution of perforated plate heat exchangers over a range of geometry and operating conditions. The parameters that were varied include the axial length, temperature range, mass flow rate, and working fluid.

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“…A matrix heat exchanger consists of a package of perforated plates with a multitude of flow passages aligned in the direction of flow, allowing a high heat transfer in a proper design unit. These exchangers can have up to 6000 m 2 /m 3 surface to volume ratio, much higher than for a typical shell-and-tube heat exchanger [2,3]. A schematic of a MHE is presented in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

The analysis of the matrix heat exchanger effectiveness

Tomić¹,

Živković²,

Vukić³

et al. 2015

Savr tehnol

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The goal of this paper is to establish the optimal operating regime of the observed perforated plate air/water heat exchanger in a wide range of parameters. The experimental investigation was carried out in a package of three perforated plates which were placed in the experimental chamber and heated by hot water. A fan with the variable air volume flow was connected to the experimental chamber, so the air flow rates varied from 100 to 300 m 3 /h, while the water flow varied from 0.03 to 0.06 m 3 /h. The thermocouples were attached to the surface of the middle perforated plate in the package along its upwind and downwind sides, as well as at the inlet and outlet of the chamber and between the perforated plates. During each experiment, the readings of thermocouples were recorded alongside with the air and water volume flow and temperatures of water at the inlet and outlet of the chamber. In order to predict the performance of the observed perforated plate heat exchanger, NTU-Effectiveness analysis was performed on the basis of the experiment results and analytical relations. Experimental results showed that the effectiveness of the perforated plate heat exchanger can be calculated the same as for the concentric tube counter flow. At the end of the paper, the optimal operating point in the range of varied parameters was determined.

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Matrix heat exchangers and their application in cryogenic systems

Cited by 48 publications

References 45 publications

The thermal modeling of a matrix heat exchanger using a porous medium and the thermal non-equilibrium model

The thermal modeling of a matrix heat exchanger using a porous medium and the thermal non-equilibrium model

An Experimentally Validated Numerical Modeling Technique for Perforated Plate Heat Exchangers

The analysis of the matrix heat exchanger effectiveness

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