Development and validation of a TRNSYS type to simulate heat pipe heat exchangers in transient applications of waste heat recovery
Daniel Brough,J.B. Ramos,Bertrand Delpech,Hussam Jouhara +3 more
- Vol. 9, pp 100056
TLDR
In this paper, a transient TRNSYS HPHE component has been developed using the Effectiveness-Number of Transfer Units (NTU) method and validated against experimental results to predict outlet temperatures and energy recovery well within an accuracy of 15% and an average of 4.4% error.Abstract:
Heat pipe heat exchangers (HPHEs) are being more frequently used in energy intensive industries as a method of low-grade waste heat recovery. Prior to the installation of a HPHE, the effect of the heat exchanger within the system requires modelling to simulate the overall impact. From this, potential savings and emission reductions can be determined, and the utilisation of the waste heat can be optimised. One such simulation software is TRNSYS. Currently available heat exchanger simulation components in TRNSYS use averaged values such as a constant effectiveness, constant heat transfer coefficient or conductance for the inputs, which are fixed during the entire simulation. These predictions are useful in a steady-state controlled temperature environment such as a heat treatment facility, but not optimal for the majority of energy recovery applications which operate with fluctuating conditions. A transient TRNSYS HPHE component has been developed using the Effectiveness-Number of Transfer Units (ɛ-NTU) method and validated against experimental results. The model predicts outlet temperatures and energy recovery well within an accuracy of 15% and an average of 4.4% error when compared to existing experimental results, which is acceptable for engineering applications.read more
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References
More filters
Journal ArticleDOI
Compact heat exchangers
TL;DR: The third edition of the second edition as discussed by the authors was published in 1964 and contains basic test data for eleven new surface configurations, including some of the very compact ceramic matrices, in both the English and the Systeme International (SI) system of units.
Book
Principles of heat transfer
TL;DR: In this paper, Kreith, Manglik, and Bohn present relevant and stimulating content in this fresh and comprehensive approach to heat transfer, acknowledging that in today's world classical mathematical solutions to Heat Transfer problems are often less influential than computational analysis.
Book
Heat Transfer: A Practical Approach
TL;DR: In this article, the basic concepts of thermodynamics and heat transfer heat conduction are discussed, and numerical methods in heat transfer forced convection natural convection boiling and condensation radiation heat-transfer heat exchangers mass transfer.
Book ChapterDOI
Heat Transfer from Tubes in Crossflow
TL;DR: In this paper, the authors discuss the heat transfer and the hydraulic resistance of single tubes, and the banks of tubes of various arrangements in flows of gases and viscous liquids, and highlight the influence of the physical properties of fluids on heat transfer.