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An Implementation Investigation on Hydrothermal Behavior of Heat Exchanger with a Novel Finned Tube Designed

  • Research Article-Chemical Engineering
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Abstract

The heat exchanger is a core component of all thermal systems. Thus, high-efficiency heat exchangers that can save energy and material are required. Heat transfer improvement in heat exchangers by applying the newly designed fin configuration increases the heat exchanger efficiency. Moreover, the newly designed finned heat exchanger improved heat transfer, resulting in a significant reduction in the heat exchanger size. A compact countercurrent water–water heat exchanger with a high rate of heat transfer while using the least amount of space was achieved. The newly designed finned tube on the outer surface of the inner tube in this study increased the heat transfer characteristics of the double-pipe heat exchanger. An insulated Perspex shell with an inner diameter of 54 mm, 2000 mm in length, and 3 mm thick. Copper tubes with and without rectangular copper fins are studied and compared. The smooth copper tube was 2250 mm in length with 20 mm and 22 mm inner and outer diameters, respectively. The experimental results showed that the Nusselt number and effectiveness of the newly proposed finned tube increased by 95% and 127%, respectively, compared to those of the smooth tube at the same Reynolds number, while the heat transfer coefficient increased by 53% over a smooth tube.

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Abbreviations

A :

The external surface area of the internal coiled tube (m2)

C p :

Heat capacity (J/kg °C)

d i :

Inside diameter (m)

d o :

Outside diameter (m)

m :

Mass-flow rate (kg/s)

Q :

Heat transfer rate (W)

REh :

Hot fluid Reynold number

REc :

Cold fluid Reynold number

q :

Heat flux (W/m2)

T ci :

Inlet chilly fluid temp. (°C)

T hi :

Inlet hot fluid temp. (°C)

U :

Overall heat transfer coefficient (W/m2 °C)

V :

Volumetric flow rate (m3/s)

\(\mu_{h}\) :

Dynamic viscosity of the fluid (N s/m2)

\(\rho_{h}\) :

The density of the fluid (kg/m3)

LMTD:

The logarithmic mean temperature difference

Nu:

Nusselt number

D h :

Equivalent hydraulic diameter

K h :

Thermal conductivity (W/m K)

∆p :

Pressure drop (N/m2)

ƒ:

Friction factor

u :

Velocity (m/s)

H.E:

Heat exchanger

γ :

Kinematic viscosity (m2/s)

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Authors and Affiliations

  1. Chemical Engineering Department, College of Engineering, Al-Nahrain University, Al-Jadiryah, Baghdad, Iraq

    Hussein Ali Hassan & Vinous M. Hameed

Authors
  1. Hussein Ali Hassan
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  2. Vinous M. Hameed
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Correspondence to Vinous M. Hameed.

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Hassan, H.A., Hameed, V.M. An Implementation Investigation on Hydrothermal Behavior of Heat Exchanger with a Novel Finned Tube Designed. Arab J Sci Eng (2024). https://doi.org/10.1007/s13369-024-08811-2

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