Development of two-dimensional code for heat exchanger thermal performance prediction - Effects of airflow velocity distribution

A numerical method to determine the effectiveness of the crossflow heat exchanger, accounting for the effect of the two-dimensional longitudinal heat conduction through the exchanger wall structure in the directions of fluid flows, is presented. The exchanger effectiveness and its deterioration due to the conduction effect have been calculated for various design and operating conditions of the exchanger. The results indicate that the thermal performance deterioration of the exchanger may become significant for some typical applications.

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Impact of soil model complexity on the long-term thermal performance prediction of a new shallow bore ground heat exchanger

Science and Technology for the Built Environment ◽

10.1080/23744731.2021.1908038 ◽

2021 ◽

pp. 1-12

Author(s):

Liang Shi ◽

Ming Qu ◽

Xiaobing Liu ◽

Mingkan Zhang ◽

Lingshi Wang

Keyword(s):

Heat Exchanger ◽

Thermal Performance ◽

Performance Prediction ◽

Model Complexity ◽

Ground Heat Exchanger ◽

Soil Model

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Thermal performance prediction and energy conservation potential of earth air tunnel heat exchanger for thermal comfort in building

Journal of Renewable and Sustainable Energy ◽

10.1063/1.4861782 ◽

2014 ◽

Vol 6 (1) ◽

pp. 013107 ◽

Cited By ~ 2

Author(s):

S. C. Kaushik ◽

Tarun Garg ◽

Shiv Lal

Keyword(s):

Heat Exchanger ◽

Energy Conservation ◽

Thermal Comfort ◽

Thermal Performance ◽

Performance Prediction

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Using Iterative Code for Thermal Performance Prediction of Concentric Tube Heat Exchanger: Parametric Analysis

Volume 3: Engineering Systems; Heat Transfer and Thermal Engineering; Materials and Tribology; Mechatronics; Robotics ◽

10.1115/esda2014-20594 ◽

2014 ◽

Cited By ~ 1

Author(s):

Mohamad Ramadan ◽

Mahmoud Khaled ◽

Ali Al Shaer ◽

Mohamad Hammoud ◽

Hicham El Hage

Keyword(s):

Heat Exchanger ◽

Thermal Performance ◽

Performance Prediction ◽

Heat Exchangers ◽

Parametric Analysis ◽

Operational Parameters ◽

Outer Flow ◽

Flow Rates ◽

Tube Heat Exchanger ◽

Overall Heat Transfer Coefficient

This paper handles numerical analyses that give attention to the relation between the thermal performance of concentric tube heat exchangers and its operational parameters. For this purpose, an iterative computational code is developed to compute thermal performance. The computations are based on supplying the code with the exchanger length, inner/outer diameters, inner/outer fluids, inner/outer flow rates and inner/outer inlet temperatures. A parametric analysis that examines the relation between the thermal performance of heat exchanger and inner/outer flow rates is presented. It is originated that the thermal performance and the overall heat transfer coefficient of a concentric tube heat exchanger increase through a rational function with the inner and outer flow rates.

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