Effective Overall Heat Transfer Coefficient Solver in a Triple Concentric-Tube Heat Exchanger

Radulescu, Sinziana; Negoita, Loredana Irena; Onuţu, Ion

doi:10.37358/rc.19.6.7271

Cited by 6 publications

(8 citation statements)

References 8 publications

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“…Specific heat: Cp = 2.615×10 -9 T 4 -7.210×10 -7 T 3 + 7.882×10 -5 T 2 -3.411×10 -3 T + 4.223 (6) Density:…”

Section: B Materials Propertiesmentioning

confidence: 99%

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Experimental and Numerical Thermal Study of Triple Pipe Heat Exchanger

Saraireh

2018

International Journal of Simulation: Systems, Science &Amp; Technology

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Experimental investigation of thermal performance of triple pipe heat exchanger is performed. The triple pipe heat exchanger consists of three pipes which are inner pipe, intermediate pipe and outer pipe. Hot water flows in the intermediate pipe while normal water flows in the inner and outer pipe. A set of experiments under steady state conditions for different flow rates are conducted. Temperature variation of the hot and normal water along the length of the heat exchanger is presented. In addition, heat transfer rate from the heat exchanger is obtained for different flow rates. It is found that the heat transfer rate increases with increasing volume flow rate. The maximum heat transfer rate is found at higher volume flow rate of hot and normal water. Furthermore, Numerical simulations are carried out to obtain the heat transfer rate from the heat exchanger and compared with experimental data to validate the numerical model. It is found that the numerical model is capable of predicting the heat transfer rate.

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“…Specific heat: Cp = 2.615×10 -9 T 4 -7.210×10 -7 T 3 + 7.882×10 -5 T 2 -3.411×10 -3 T + 4.223 (6) Density:…”

Section: B Materials Propertiesmentioning

confidence: 99%

“…Triple pipe heat exchanger was also used to study the milk sterilizing [4,5]. Radulescu et al [6] experimentally studied the heat transfer coefficient for the triple concentric tube heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Thermal Study of Triple Pipe Heat Exchanger

Saraireh

2018

International Journal of Simulation: Systems, Science &Amp; Technology

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“…Its basic structure consists of three concentric tubes, namely the inner tube, inner annulus, and the outer annulus. Various investigations in the design of TTHX have already been performed by many researchers 3–16 . A mathematical model was derived by Zuritz 3 to identify the axial temperature of any fluid which is going to flow in the TTHX.…”

Section: Introductionmentioning

confidence: 99%

“…For identical length, the effectiveness and OHTC of TTHX were evaluated to be better than DTHX for the counter flow configuration. A detailed experiment was performed by Radulescu et al 8 to study the thermal properties of the TTHX where hot water was flowing through the inner annulus, and cold water was passed through the other two passages. The purpose was to deduce the partial heat transfer coefficient for hot fluid in a transient flow regime.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of heat transfer in a triple tube heat exchanger with coiled spring inserts

Kumar

Prakash

2021

Heat Trans

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Experiments have been performed to investigate the effect of coiled spring inserts on heat transfer, pressure drop, and performance parameters of a triple tube heat exchanger (TTHX). Three different spring inserts having a pitch of 5, 10, and 15 mm are used and the diameter of the spring wire is taken as 1 mm. The experiments were carried out under a turbulent flow regime, with water as a working medium in parallel and counter flow configurations. The variation in different performance characteristics like heat transfer coefficient, Nusselt number, and effectiveness have been compared at various Reynolds numbers ranging between 4000 and 16,000 in the considered flow patterns. The Nusselt number of TTHX with the lowest pitch spring is found to be higher than that of the plain TTHX by 57.27% at Re = 4000 for the counter flow configuration. Both the thermal performance factor and effectiveness increased as the pitch of the spring insert was decreased. The effectiveness of TTHX with the lowest pitch spring insert is found higher than that of the plain TTHX by 43.84% in the counter flow pattern.

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“…A vast amount of works is available on the first group. While some authors performed mathematical modelling of shell-and-tube heat exchangers (Turgut, Turgut & Coban, 2014;Markowski & Trzcinski, 2019; and triple concentrictube heat exchangers (Batmaz & Sandeep, 2005;Patrascioiu & Radulescu, 2015;Radulescu, Negoita & Onutu, 2019), there are other studies related to numerical modelling of these equipment (Rao & Raju, 2016;Bayram & Sevilgen, 2017;Taler, 2019;Xavier-Andrade, Quitiaquez-Sarzosa & Fernando-Toapanta, 2020). In spite of its broader application, the overall heat transfer coefficient entails time-consuming calculations as well as using heat transfer correlations that regularly provides inaccurate results, with errors ranging up to 40 % (Laskowski, 2011;Markowski & Trzcinski, 2019).…”

Section: Introductionmentioning

confidence: 99%

Dimensional analysis applied to jacketed shell and tube heat exchangers modeling

Escalona¹,

Camaraza-Medina

Retirado-Mediaceja³

et al. 2021

Enfoque UTE

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Dimensional analysis was utilized on this research to establish a shortcut model for predicting hydrogen sulphide gas discharge temperature in jacketed shell and tube heat exchangers. Since the equipment belongs to an online industrial facility, the passive experimental method was applied. Selection of the heat transfer process parameters was followed by application of the Buckingham Pi-theorem and the repeating-variables technique. After formulation of the dimensionless groups, approximation of the explicit model equation was carried out through a least-squares multivariate linear regression. The model predictive ability performance was appraised by comparing predictions versus measured discharge temperatures, hence attaining a Pearson correlation of 97.5 %, a mean absolute error of 2.1 K, and 1.7 % maximum deviations. The explicit equation that was obtained is pertinent to studied heat exchangers, when 0.55 ≤ ṁ1 ≤ 0.60, 1.06 ≤ ṁ2 ≤ 1.09, and 0.22 ≤ ṁ3 ≤ 0.24 (fluids flowrate, kg/s). It can be used as an alternative calculation method for quick anticipation of the equipment performance, which overcomes computation of the overall heat transfer coefficients.

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Effective Overall Heat Transfer Coefficient Solver in a Triple Concentric-Tube Heat Exchanger

Cited by 6 publications

References 8 publications

Experimental and Numerical Thermal Study of Triple Pipe Heat Exchanger

Experimental and Numerical Thermal Study of Triple Pipe Heat Exchanger

Experimental investigation of heat transfer in a triple tube heat exchanger with coiled spring inserts

Dimensional analysis applied to jacketed shell and tube heat exchangers modeling

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