Heat transfer enhancement in hybrid metal-polymer heat exchangers using extended surfaces

Goswami, Shuvankar

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https://hdl.handle.net/2142/114031 Copy

Description

Title

Heat transfer enhancement in hybrid metal-polymer heat exchangers using extended surfaces

Author(s)

Goswami, Shuvankar

Issue Date

2021-12-10

Director of Research (if dissertation) or Advisor (if thesis)

Sinha, Sanjiv

Department of Study

Mechanical Sci & Engineering

Discipline

Mechanical Engineering

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(s)

• heat exchangers
• fins
• roll-to-roll manufacturing

Abstract

Up to half of the total energy input into the industrial sector of the United States can reasonably be lost through waste heat. Most of this waste heat exists in the low temperature regime (<450°F). Metal heat exchangers prevalent in waste heat recovery are vulnerable to corrosion and costly to install and maintain. Polymers, though inadequate for most heat transfer applications due to low thermal conductivities (~0.1 W/m.K), provide a means to mitigate these issues. A hybrid configuration of combined metal-polymer tapes provides a method for reaching a suitable conductivity for waste heat recovery usage. Heat exchangers comprised of helically wound copper-polymer tapes are manufactured using a roll-to-roll process, as established in previous research. This work investigates the capability of adapting the process to integrate external fins into the hybrid design. Surface area enhancement of the outermost metal layer is a proposed way of improving the heat transfer characteristics without affecting material or thermal parameters. We report findings from conducted experiments to analyze the effectiveness of the external fins. This achieved design can enable future advancements in waste heat recovery technology for eventual industrial usage.

Graduation Semester

2021-12

Type of Resource

Thesis

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© 2021 Shuvankar Goswami

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