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Journal articles on the topic 'Cross-flow heat exchangers'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Saboya, F. E. M., and C. E. S. M. da Costa. "Minimum Irreversibility Criteria for Heat Exchanger Configurations." Journal of Energy Resources Technology 121, no. 4 (1999): 241–46. http://dx.doi.org/10.1115/1.2795989.

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From the second law of thermodynamics, the concepts of irreversibility, entropy generation, and availability are applied to counterflow, parallel-flow, and cross-flow heat exchangers. In the case of the Cross-flow configuration, there are four types of heat exchangers: I) both fluids unmixed, 2) both fluids mixed, 3) fluid of maximum heat capacity rate mixed and the other unmixed, 4) fluid of minimum heat capacity rate mixed and the other unmixed. In the analysis, the heat exchangers are assumed to have a negligible pressure drop irreversibility. The Counterflow heat exchanger is compared with

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2

Silaipillayarputhur, Karthik. "Transient Response of Cross Flow Heat Exchangers Subjected to Simultaneous Temperature and Flow Perturbations." Applied Mechanics and Materials 799-800 (October 2015): 665–70. http://dx.doi.org/10.4028/www.scientific.net/amm.799-800.665.

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This paper compares the transient thermal performance between counter and parallel cross flow heat exchangers subjected to time varying inlet mass flow rates and inlet temperatures that hasn’t been previously discussed in the available literature. Specifically the transient performance of 2 pass and 3 pass cross flow heat exchangers is discussed in this paper. In the present study the energy balance equations for the hot and cold fluids and the heat exchanger wall were solved using an implicit central finite difference method. Representative values of NTU were considered, and the NTU’s of the

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3

Bury, Tomasz, Jan Składzień, and Katarzyna Widziewicz. "Experimental and numerical analyses of finned cross flow heat exchangers efficiency under non-uniform gas inlet flow conditions." Archives of Thermodynamics 31, no. 4 (2010): 133–44. http://dx.doi.org/10.2478/v10173-010-0034-5.

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Experimental and numerical analyses of finned cross flow heat exchangers efficiency under non-uniform gas inlet flow conditionsThe work deals with experimental and numerical thermodynamic analyses of cross-flow finned tube heat exchangers of the gas-liquid type. The aim of the work is to determine an impact of the gas non-uniform inlet on the heat exchangers performance. The measurements have been carried out on a special testing rig and own numerical code has been used for numerical simulations. Analysis of the experimental and numerical results has shown that the range of the non-uniform air

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Sonjaya, Abeth Novria, Marhaenanto Marhaenanto, Mokhamad Eka Faiq, and La Ode M. Firman. "Analisis Perbandingan Jenis Material Penukar Kalor Plat Datar Aliran Silang Untuk Proses Pengeringan Kayu." Jurnal Teknologi 9, no. 1 (2021): 60–71. http://dx.doi.org/10.31479/jtek.v9i1.117.

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The processed wood industry urgently needs a dryer to improve the quality of its production. One of the important components in a dryer is a heat exchanger. To support a durable heat transfer process, a superior material is needed. The aim of the study was to analyze the effectiveness of the application of cross-flow flat plate heat exchangers to be used in wood dryers and compare the materials used and simulate heat transfer on cross-flow flat plate heat exchangers using Computational Fluid Dynamic simulations. The results showed that there was a variation in the temperature out of dry air an

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5

WU, S. Y., Y. R. LI, and D. L. ZENG. "EXERGO-ECONOMIC PERFORMANCE EVALUATION ON LOW TEMPERATURE HEAT EXCHANGER." International Journal of Modern Physics B 19, no. 01n03 (2005): 517–19. http://dx.doi.org/10.1142/s0217979205028943.

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Based on the exergo-economic analysis of low temperature heat exchanger heat transfer and flow process, a new exergo-economic criterion which is defined as the net profit per unit heat flux for cryogenic exergy recovery low temperature heat exchangers is put forward. The application of criterion is illustrated by the evaluation of down-flow, counter-flow and cross-flow low temperature heat exchangers performance.

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6

Cabezas-Gómez, Luben, Hélio Aparecido Navarro, and José Maria Saiz-Jabardo. "Thermal Performance of Multipass Parallel and Counter-Cross-Flow Heat Exchangers." Journal of Heat Transfer 129, no. 3 (2006): 282–90. http://dx.doi.org/10.1115/1.2430719.

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A thorough study of the thermal performance of multipass parallel cross-flow and counter-cross-flow heat exchangers has been carried out by applying a new numerical procedure. According to this procedure, the heat exchanger is discretized into small elements following the tube-side fluid circuits. Each element is itself a one-pass mixed-unmixed cross-flow heat exchanger. Simulated results have been validated through comparisons to results from analytical solutions for one- to four-pass, parallel cross-flow and counter-cross-flow arrangements. Very accurate results have been obtained over wide

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7

Syukran, Syukran. "Kaji efisiensi temperatur penukar panas dengan variasi aliran untuk aplikasi pengering." Jurnal POLIMESIN 16, no. 2 (2018): 39. http://dx.doi.org/10.30811/jpl.v16i2.562.

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Abstrak Heat exchanger atau alat penukar panas adalah alat-alat yang digunakan untuk mengubah temperatur fluida atau mengubah fasa fluida dengan cara mempertukarkan panasnya dengan fluida lain. Pada sebuah penukar panas kemampuan mempertukarkan panas sangat ditentukan oleh tipe dan jenis aliran fluida yang melewati penukar panas. Secara garis besar penukar panas dibagi berdasarkan arah aliran fluidanya. Berdasarkan arah aliran fluida penukar panas dibedakan menjadi 3 (tiga) jenis aliran, yaitu aliran searah (parallel flow), aliran berlawanan (counter flow) dan aliran silang (cross flow). Saat

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8

Parag, Mishra*, and Manoj Arya Dr. "A REVIEW OF LITERATURE ON THERMAL DESIGN OF FORCED DRAFT COUNTER TO CROSS FLOW AIR COOLED HEAT EXCHANGER." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 4 (2016): 777–85. https://doi.org/10.5281/zenodo.50408.

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Heat exchangers are equipment that transfers heat from one medium to another. An air cooled heat  exchanger, or ACHE, is simply a pressure vessel which cools a circulating fluid within finned tubes by forcing ambient air over the exterior of the tubes. In cross flow exchangers, the hot and cold fluids move perpendicular to each other. Some actual heat exchangers are a mixture of cross flow and counter flow (Known as Counter to Cross Flow Heat Exchangers) due to design features. The proper design, operation and maintenance of heat exchangers will make the process energy efficient and minim

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9

Ramezanpour Jirandeh, Reza, Mehrangiz Ghazi, Amir Farhang Sotoodeh, and Mohammad Nikian. "Plate-fin heat exchanger network modeling, design and optimization – a novel and comprehensive algorithm." Journal of Engineering, Design and Technology 19, no. 5 (2021): 1017–43. http://dx.doi.org/10.1108/jedt-07-2020-0262.

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Purpose The purpose of this paper is to present a novel and applied method for optimum designing of plate-finned heat exchanger network. Considering the total annual cost as the objective function, a network of plate-finned heat exchanger is designed and optimized. Design/methodology/approach Accurate evaluation of plate-finned heat exchanger networks depends on different fin types with 10 different geometrical parameters of heat exchangers. In this study, fin numbers are considered as the main decision variables and geometrical parameters of fins are considered as the secondary decision varia

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10

Lopata, Stanislaw, and Pawel Oclon. "Verification of applicability of the two-equation turbulence models for temperature distribution in transitional flow in an elliptical tube." Thermal Science 23, Suppl. 4 (2019): 1113–21. http://dx.doi.org/10.2298/tsci19s4113l.

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To increase the efficiency, elliptical tubes are often used in cross-flow heat exchangers. For these kinds of heat exchangers the flow field in the tubes exhibits irregularities. Therefore, various flow regimes can be observed: the turbulent, the transitional, and even the laminar one. Therefore, applying typical turbulence models for numerical calculations may cause significant errors, when flow in the heat exchanger tubes is in the transitional or laminar regime. Hence, the average values of flow velocities and temperature in heat exchanger tubes can be calculated incorrectly. The paper pres

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11

Taçgün, Ekrem, and Gökhan Aksoy. "A numerical study for solid and serrated annular finned tube bundles." Thermal Science, no. 00 (2022): 18. http://dx.doi.org/10.2298/tsci211120018t.

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Annular finned tube bundles are commonly used for heat recovery systems. Nowadays, heat recovery systems are important in the energy economy. Cross-flow heat exchangers, one of the heat exchanger types are suitable for waste heat recovery systems. Annular fins are utilized in cross-flow heat exchangers for a long time. In this study, two types of annular fin geometry, namely solid and serrated fins, were studied numerically in the cross-flow heat exchangers. All numerical analyses are performed in Ansys-Fluent program and the fin geometries are designed in three-dimensional geometry. Numerical

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12

Chennu, Ranganayakulu. "Numerical analysis of compact plate-fin heat exchangers for aerospace applications." International Journal of Numerical Methods for Heat & Fluid Flow 28, no. 2 (2018): 395–412. http://dx.doi.org/10.1108/hff-08-2016-0313.

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Purpose The purpose of this study is to find the thermo-hydraulic performances of compact heat exchangers (CHE’s), which are strongly depending upon the prediction of performance of various types of heat transfer surfaces such as offset strip fins, wavy fins, rectangular fins, triangular fins, triangular and rectangular perforated fins in terms of Colburn “j” and Fanning friction “f” factors. Design/methodology/approach Numerical methods play a major role for analysis of compact plate-fin heat exchangers, which are cost-effective and fast. This paper presents the on-going research and work car

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13

Węglarz, Katarzyna, Dawid Taler, Jan Taler, and Mateusz Marcinkowski. "New calculation method for tube cross-flow heat exchangers." E3S Web of Conferences 323 (2021): 00032. http://dx.doi.org/10.1051/e3sconf/202132300032.

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A new method for thermal calculations of the cross-flow tube heat exchangers was proposed. The temperature of both fluids and the wall temperature are determined. The heat exchanger is divided into control volumes, in which outlet fluid temperatures are calculated by closed analytical formulas. Two examples of the application of the method for the calculation of two-pass cross-co-current and cross-countercurrent superheaters were presented. An exact analytical model was also developed for both superheaters to estimate the accuracy of the proposed method. The results of the superheater calculat

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14

Li, Wen, Jun Hua Wan, Jing Liu, Zu Yi Zheng, and Wen Ming Xu. "Theoretical Analysis of Effects of Solution Heat Exchanger on the Performance of Mixed Absorption Refrigeration Cycle." Applied Mechanics and Materials 170-173 (May 2012): 2521–24. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.2521.

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The model of solution heat exchangers of mixed absorption refrigeration cycle was developed. The effects of strong solution temperature difference between inlet and outlet of solution heat exchanger on the coefficient of performance (COP) and cooling water flow rate of mixed absorption refrigeration cycle were analyzed, at the same time, the effects of temperature difference on the unit heat exchange area of counter-flow and cross-flow solution heat exchangers were analyzed. The theoretical analysis results showed that there was an optimal value for the strong solution temperature difference,

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15

Badawy, Faris Ali, and Kadhum Audaa Jehhef. "NANOFLUIDS HEAT TRANSFER INTENSIFICATION IN DOUBLE PIPE HEAT EXCHANGERS: REVIEW ARTICLE." Acta Mechanica Malaysia 5, no. 2 (2022): 16–23. http://dx.doi.org/10.26480/amm.01.2022.16.23.

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In current years, the warmth switch enhancement developed with the aid of the usage of nanofluid. A nanofluid is a kind of fluid that organized by means of dispraised of nanoparticles of metal, oxides or carbides with 100 nm size that depressed in water, ethylene glycol or oil. The enhancement of warmness transfer overall performance through expending nanofluid primarily relies upon on the type of nanoparticles, kind of base fluid, form of nanoparticles, size of nanoparticles and nanoparticles attention in the base fluid. In this paper, several newly massive numbers of studied have been being

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16

Yani, Indri, Rizal Hanifi, and Aa Santosa. "SHELL AND TUBE TYPE HEAT EXCHANGER DESIGN TO UTILIZE EXHAUST GASES FROM THE GENERATOR." Journal of Mechanical and Manufacture 4, no. 1 (2025): 01–07. https://doi.org/10.31949/jmm.v4i1.11890.

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Heat exchangers or often called heat exchangers (HE) are widely used in industry. There are many types of heat exchangers, there are fire pipes or water pipes with cross flow or unidirectional flow. Utilizing exhaust gas is an alternative to reduce costs and increase effectiveness so that wasted energy can be utilized as optimally as possible. A generator is one that can produce electrical energy which produces flue gases with a high temperature so that it can be utilized using a heat exchanger. A shell and tube heat exchanger with a fire tube type was designed. The number of pipes designed wa

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17

K.H., Jyothiprakash, Krishnegowda Y.T., Krishna Venkataram, and K. N. Seetharamu. "Effect of ambient heat-in-leak on the performance of three-fluid cross-flow heat exchanger." International Journal of Numerical Methods for Heat & Fluid Flow 28, no. 9 (2018): 2012–35. http://dx.doi.org/10.1108/hff-05-2017-0205.

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Purpose Heat exchangers working in cryogenic temperature ranges are strongly affected by heat ingression from the ambient. This paper aims to investigate the effect of ambient heat-in-leak on the performance of a three-fluid cross-flow cryogenic heat exchanger. Design/methodology/approach The governing equations are derived for a three-fluid cross-flow cryogenic heat exchanger based on the conservation of energy principle. For given fluid inlet temperatures, the governing equations are solved using the finite element method to obtain exit temperatures of the three-fluid exchanger. The performa

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18

Łopata, Stanisław, Paweł Ocłoń, and Tomasz Stelmach. "Investigation of flow non-uniformities in the cross-flow heat exchanger with elliptical tubes." E3S Web of Conferences 108 (2019): 01009. http://dx.doi.org/10.1051/e3sconf/201910801009.

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In heat exchangers, especially those with the cross-flow arrangement, it is nearly impossible to achieve the uniform distribution of the working fluid in the tubular space with the currently used inlet and outlet chambers (in some constructions as well). The improper inflow conditions to individual tubes, including those with an elliptical cross-section - often used because of their favorable features compared to round tubes, is the cause of improper heat transfer. In this respect, transitional flow is of particular importance. This flow regime is complex and challenging to model. Therefore, i

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19

Prakashkumar, A. Prajapati Shri. A.S.Mohite. "An Experimental Analysis of The Overall Heat Transfer Coefficient On Cross Flow Heat Exchanger & Fin Effectiveness." International Journal of Research and Analytical Reviews 5, no. 3 (2018): 343–48. https://doi.org/10.5281/zenodo.10978645.

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As far modern requirement is to make a small car so there is an immediate need to design an effectively heated exchanger. In this paper, the impact of finned heated exchanger over a without finned heated exchanger on overall heated return coefficient is examined. The overall heated return coefficient is examined for both heated exchange with air rate 3m/s, 4m/s, 5m/s and 6m/s and coolant flow 180 Lit/hr, 260 Lit/ hr, 340 Lit/hr, 420 Lit/hr ad 500 Lit/hr. Finned-tube heated exchangers are common and important components in many energy methods Fin-and-tube heated exchang

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20

Alotaibi, Sorour, Mihir Sen, Bill Goodwine, and K. T. Yang. "Controllability of cross-flow heat exchangers." International Journal of Heat and Mass Transfer 47, no. 5 (2004): 913–24. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2003.08.021.

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21

Korenchenko, Anna E., and Anton V. Sukhov. "A smoothed particle hydrodynamics approach for numerical simulation of tube heat exchangers." Russian Technological Journal 13, no. 1 (2025): 136–43. https://doi.org/10.32362/2500316x-2025-13-1-136-143.

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Objectives. In the confined space of heat exchangers, heat transfer rate plays a key role. The cross-sectional shape of the tubes can affect the heat transfer characteristics. Although circular tubes are easier and less expensive to manufacture, heat transfer in heat exchangers with tubes of other cross-sections can take place at higher rates, thus providing economic advantages. This makes the mathematical modeling of hydrodynamics and heat exchange in a tube apparatus relevant and interesting both from the theoretical and applied point of view. The aim of this study is to determine the influe

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Natig Abbasov, Natig Abbasov, and Farahim Tahmazov Farahim Tahmazov. "PRIMARY OIL REFINING AND HEAT EXCHANGER APPARATUS." ETM - Equipment, Technologies, Materials 14, no. 02 (2023): 147–53. http://dx.doi.org/10.36962/etm14022023-147.

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Different technological processes are applied in the field of modern oil refining. Each of the processes in turn is implemented by many technological schemes and methods. In petroleum refining and chemical production, these technological processes provide the basis for many simple processes. In this way, the learning of the processes is facilitated. They process oil and its products by applying various processes. Oil refining and its main organic synthesis plants are composed of a collection of various technological processes and general plant farms. Depending on the number and quality of the

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23

Liu, Xingyu, and Guangji Li. "A multi-fluid heat transfer spiral coil microchannel heat exchanger based on CFD." Journal of Physics: Conference Series 3009, no. 1 (2025): 012047. https://doi.org/10.1088/1742-6596/3009/1/012047.

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Abstract Currently, most microchannel heat exchangers are limited to providing heat transfer between one or two working fluids. However, in fields such as waste heat recovery, and solar thermal power generation, there is a need for energy conversion between multiple media. Consequently, this study introduces a microchannel heat exchanger with a spiral coil structure designed to facilitate simultaneous heat transfer with two or more working fluids. The heat exchange units of this microchannel heat exchanger feature two semicircular cross-section spiral channels that are alternately wound around

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Diani, Andrea, Luisa Rossetto, Roberto Dall’Olio, Daniele De Zen, and Filippo Masetto. "Heat and Mass Transfer to Air in a Cross Flow Heat Exchanger with Surface Deluge Cooling." International Journal of Air-Conditioning and Refrigeration 24, no. 01 (2016): 1650002. http://dx.doi.org/10.1142/s2010132516500024.

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Cross flow heat exchangers, when applied to cool data center rooms, use external air (process air) to cool the air stream coming from the data center room (primary air). However, an air–air heat exchanger is not enough to cope with extreme high heat loads in critical conditions (high external temperature). Therefore, water can be sprayed in the process air to increase the heat dissipation capability (wet mode). Water evaporates, and the heat flow rate is transferred to the process air as sensible and latent heat. This paper proposes an analytical approach to predict the behavior of a cross flo

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25

Grysa, Krzysztof, Artur Maciąg, and Artur Ściana. "Comparison of the Efficiency of Cross-Flow Plate Heat Exchangers Made of Varied Materials." Energies 15, no. 22 (2022): 8425. http://dx.doi.org/10.3390/en15228425.

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This paper discusses a mathematical model for airflow through a cross-flow plate heat exchanger. The exhaust air is used to heat the supply air. Three kinds of plates are considered: made of aluminium, copper, and steel. The purpose of this research was to verify which material used to build the plate heat exchangers uses the exhaust air heat more efficiently. The method of the Trefftz function was used to determine approximate solutions to the analysed problem. The results obtained for 1.2 mm-thick plates and for external winter, summer, and spring–autumn temperatures are discussed. The resul

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P.ParabrahmaSai, Prasad K.Lakshmi, Kumar P.Ravindra, and Srinivasa Rao K. "Experimental Study of Heat Transfer Rate in Single and Series Cross Flow Heat Exchanger using Matlab Coding." International Journal of Engineering and Advanced Technology (IJEAT) 10, no. 1 (2020): 273–80. https://doi.org/10.35940/ijeat.A1836.1010120.

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The present study investigates the heat transfer rate and effectiveness of cross flow heat exchanger by varying velocity and mass flow rate of the cold and hot fluids.The velocity of the cold fluid i.e. air varying from 15m/s to 30m/s(with an intermediate step of 20m/s and 25m/s) whereas the mass flow rate of hot fluid i.e. water is taken as 35lit/hr and 84lit/hr. The logarithmic mean temperature difference (LMTD) method is used to find the heat transfer rate. In thepresent workthe effectiveness and heat transfer rate were compared between the single and series cross flow heat exchangers. The

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Lakpathi, K., J. Vadivel, and K. Chaitanya. "Heat Transfer Enhancement in Cross Flow Heat Exchangers Using Oval Tubes and Multiple Delta Winglets." International Journal of Scientific Engineering and Research 5, no. 7 (2017): 440–44. https://doi.org/10.70729/ijser171740.

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Farah, Abdulzahra Taher, and Zena Khalefa Kadhim Dr. "PRACTICAL STUDY TO IMPROVEMENT THE PERFORMANCE OF HEAT EXCHANGER USING PASSIVE TECHNIQUES." International Journal of Engineering Technologies and Management Research 6, no. 8 (2019): 21–33. https://doi.org/10.5281/zenodo.3370525.

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The aim of this study to improve the performance of heat exchanger by using the medium integral fins on the cross flow heat exchanger practically, so, two the heat exchangers from copper were manufactures with eight passes for comparison under different boundary conditions. The water flow rate flow inner the tubes with (2, 3, 4, 5, 6) L/min with inlet temperatures (50, 60, 70) oC, as for the air flow rate were passed outer the tubes by speeds (1, 1.7, 2.3) m/sec. The results show that the medium integral finned tube gives more improvement the heat transfer than the smooth tube about 203.97% an

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Taler, Dawid, Marcin Trojan, and Jan Taler. "Mathematical modelling of tube heat exchangers with complex flow arrangement." Chemical and Process Engineering 32, no. 1 (2011): 7–19. http://dx.doi.org/10.2478/v10176-011-0001-y.

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Mathematical modelling of tube heat exchangers with complex flow arrangement General principles of mathematical modelling of transient heat transfer in cross-flow tube heat exchangers with complex flow arrangements which allow a simulation of multipass heat exchangers with many tube rows are presented. First, a system of differential equations for the transient temperature of both fluids and the tube wall with appropriate boundary and initial conditions is formulated. Two methods for modelling heat exchangers are developed using the finite difference method and finite volume method. A numerica

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Kristiawan, Budi, Ilham Khoirudin, Agung Tri Wijayanta, Syamsul Hadi, and Hilbran Tama Dida Effendi. "STUDI EKSPERIMEN PENINGKATAN PERPINDAHAN KALOR FLUIDA NANO CuO /AIR PADA VERTICAL HELICAL MICROFIN TUBE." Jurnal Rekayasa Mesin 15, no. 3 (2024): 1471–81. https://doi.org/10.21776/jrm.v15i3.1715.

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The way to increase heat transfer is to use nanofluids and expand the heat transfer area. This research studied the thermal performance, convection heat change coefficient, and pressure drop in a double pipe heat exchanger experimentally in a vertically arranged helical microfin tube heat exchanger. Hot water flows on the side of the annulus. In contrast, nanofluid CuO/distilled water concentration of 0.05 vol% flows laminarly in the inner pipe of the microfin tube with cross-flow and parallel-flow arrangements. The result is convection heat transfer coefficient enhancement and thermal perform

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Yildirim, M., and M. S. Söylemez. "THERMOECONOMICAL OPTIMIZATION OF CROSS-FLOW HEAT EXCHANGERS." Heat Transfer Research 48, no. 12 (2017): 1069–75. http://dx.doi.org/10.1615/heattransres.2016006384.

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Oğulata, R. Tuğrul, Füsun Doba, and Tuncay Yilmaz. "Irreversibility analysis of cross flow heat exchangers." Energy Conversion and Management 41, no. 15 (2000): 1585–99. http://dx.doi.org/10.1016/s0196-8904(00)00020-0.

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Zaleski, Tadeusz. "Mathematical modelling of cross-flow heat exchangers." Chemical Engineering Science 42, no. 7 (1987): 1517–26. http://dx.doi.org/10.1016/0009-2509(87)80157-4.

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Stransky, David, Ivana Kabelkova, Vojtech Bares, Gabriela Stastna, and Zbigniew Suchorab. "Suitability of combined sewers for the installation of heat exchangers." Ecological Chemistry and Engineering S 23, no. 1 (2016): 87–98. http://dx.doi.org/10.1515/eces-2016-0006.

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AbstractThe present paper deals with the classification of the suitability of combined sewers for the installation of heat exchangers and with assessment of the theoretical potential of wastewater in the sewer system for heating of buildings. A classification scheme involving criteria like theoretically available heat, sewer diameter, number of the heat exchanger parallel modules in the sewer cross-section, hydraulic conditions (hydraulic capacity of the sewer, pressurized flow), and potential fouling by biofilm growth was developed. First, individual sewers in the pilot catchment were assesse

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Lafta, Doaa Alaa. "CFD Analysis of Shall and Twisting Tube Heat Exchanger." International Academic Journal of Science and Engineering 11, no. 1 (2024): 285–94. http://dx.doi.org/10.9756/iajse/v11i1/iajse1133.

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In this research, a heat exchanger was designed and analyzed using ANSYS software. Three heat exchangers were designed:1-shall and regular tube heat exchanger ,2- shall and square cross-section twisting tube heat exchanger and 3- shall and circular cross-section twisting tube heat exchanger. The metal used in manufacturing the shall and tube is copper. It was observed that the external surface of shall is no heat take place through its. Air was used as a fluid in heat exchanger, with cold air flowing inside the tube and hot air flowing inside the shall. The counter flow inside heat exchanger.

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Du, Xueping, Yantao Yin, Min Zeng, et al. "An experimental investigation on air-side performances of finned tube heat exchangers for indirect air-cooling tower." Thermal Science 18, no. 3 (2014): 863–74. http://dx.doi.org/10.2298/tsci1403863d.

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A tremendous quantity of water can be saved if the air cooling system is used, comparing with the ordinary water-cooling technology. In this study, two kinds of finned tube heat exchangers in an indirect air-cooling tower are experimentally studied, which are a plain finned oval-tube heat exchanger and a wavy-finned flat-tube heat exchanger in a cross flow of air. Four different air inlet angles (90?, 60 ?, 45?, and 30?) are tested separately to obtain the heat transfer and resistance performance. Then the air-side experimental correlations of the Nusselt number and friction factor are acquire

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Ali, Hassanein, Rana Ali Hussein та Ali A. Abbas Aljanabi. "Experimental Investigation on Enhancement of Heat Transfer using γ-Al2O3–Water as a Nanofluid in a Finned Tube Heat Exchanger". Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 126, № 1 (2025): 133–55. https://doi.org/10.37934/arfmts.126.1.133155.

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This research discusses the literature on experimental investigations of heat transfer improvement with the help of nanofluids in heat exchangers. The research does show that the performance of the compound is better in terms of heat transfer than the base fluids in the horizontal shell and tube heat exchangers. Nevertheless, the viscosity increases with the nanoparticle concentration, and this influences the friction factor. This study reveals that the application of nanofluids increases the performance of heat exchangers in the cross-flow low integral finned tubes. The experimental studies r

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Taher, Farah Abdulzahra, and Zena Khalefa Kadhim. "PRACTICAL STUDY TO IMPROVEMENT THE PERFORMANCE OF HEAT EXCHANGER USING PASSIVE TECHNIQUES." International Journal of Engineering Technologies and Management Research 6, no. 8 (2020): 21–33. http://dx.doi.org/10.29121/ijetmr.v6.i8.2019.437.

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The aim of this study to improve the performance of heat exchanger by using the medium integral fins on the cross flow heat exchanger practically, so, two the heat exchangers from copper were manufactures with eight passes for comparison under different boundary conditions. The water flow rate flow inner the tubes with (2, 3, 4, 5, 6) L/min with inlet temperatures (50, 60, 70) oC, as for the air flow rate were passed outer the tubes by speeds (1, 1.7, 2.3) m/sec. The results show that the medium integral finned tube gives more improvement the heat transfer than the smooth tube about 203.97% an

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Judt, Wojciech, and Jarosław Bartoszewicz. "Numerical analysis of flow in a modular heat exchanger used in food industrial plants." MATEC Web of Conferences 240 (2018): 02007. http://dx.doi.org/10.1051/matecconf/201824002007.

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In the article is proposed a construction of modular cross-flow heat exchanger. This construction can be used in food industrial plants for example to heating a palm oil for a chips production. The second possibility to make use of that heat exchanger in a food industrial plants will be a heating of a worn out rape oil after a technological process for a improvement of effective utilization in oil boiler. The main advantage of modular heat exchangers is the possibility of simple adjustment of heating power dependent on demand. It is possible by valve system, which can cut off subsequent sectio

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Jradi, Rania, Christophe Marvillet, and Mohamed Razak Jeday. "Study of fouling in graphite blocks (cross flow) heat exchanger of phosphoric acid concentration process." MATEC Web of Conferences 330 (2020): 01038. http://dx.doi.org/10.1051/matecconf/202033001038.

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Fouling in phosphoric acid concentration process of preheat exchangers is a chronic operational problem that compromises energy recovery in these systems. Progress is hindered by the lack of quantitative knowledge of the dynamic effects of fouling on heat exchanger transfer. The subject of this work is an experimental determination of the thermal fouling resistance in the graphite blocks heat exchanger installed in a phosphoric acid concentration process. By measuring the inlet and outlet temperatures and mass flows of fluids, the overall heat transfer coefficient has been determined. Determin

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Sinaga, Nazaruddin, Muhammad Tafarel Firjatullah, and Sri Nugroho. "Effectiveness Measurement of a Cross-Flow Air Cooler Heat Exchanger in Steady State Condition." International Research Journal of Innovations in Engineering and Technology 09, no. 05 (2025): 188–92. https://doi.org/10.47001/irjiet/2025.905024.

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Heat exchangers play a critical role in a wide range of industrial applications, including boilers, condensers, coolers, and cooling towers. This study focuses on evaluating the thermal performance, specifically the effectiveness and efficiency, of an air cooler heat exchanger operating under steady-state conditions with a constant hot water temperature. The aim is to examine how variations in water flow rate and fan air velocity influence the system’s heat transfer behavior. An experimental setup was implemented, where the heat exchanger was tested at three water flow rates (0 L/min, 2.5 L/mi

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Nielsen, Kaspar Kirstein, Kurt Engelbrecht, and Christian R.H. Bahl. "The influence of flow maldistribution on the performance of inhomogeneous parallel plate heat exchangers." international journal of heat and mass 60 (May 1, 2013): 432–39. https://doi.org/10.1016/j.ijheatmasstransfer.2013.01.018.

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The heat transfer performance of inhomogeneous parallel plate heat exchangers in transient operation is investigated using an established model. A performance parameter, denoted the Nusselt-scaling factor, is used as benchmark and calculated using a well-established single blow technique. A sample of 50 random stacks having equal average channel thicknesses with 20 channels each are used to provide a statistical base. The standard deviation of the stacks is varied as are the flow rate (Reynolds number) and the thermal conductivity of the solid heat exchanger material. It is found that the heat

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Prasad, B. S. V., and S. M. K. A. Gurukul. "Differential Methods for the Performance Prediction of Multistream Plate-Fin Heat Exchangers." Journal of Heat Transfer 114, no. 1 (1992): 41–49. http://dx.doi.org/10.1115/1.2911265.

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Use of traditional methods of rating can prove inaccurate or inadequate for many plate-fin heat exchanger applications. The superiority in practical situations of differential methods, based on dividing the heat exchanger into several sections and a step-wise integration of the heat transfer and pressure loss functions, is discussed. Differential methods are developed for counterflow, crossflow, and cross-counter-flow heat exchangers. The methods developed also avoid iterations at the section level calculations. Design of computer algorithms based on these methods is outlined. Two computer pro

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Syahril, Muhammad, A. Syuhada, and Hamdani Hamdani. "Experimental Study on Heat Transfer Characteristics on Intersecting Spiral Finned Tube Type on Heat Exchanger." Jurnal Polimesin 22, no. 5 (2024): 554. http://dx.doi.org/10.30811/jpl.v22i5.3814.

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Compact heat exchangers play an important role in the industrial world, one of their applications being in thermal machines to dissipate heat generated during mechanical processes. To improve the performance of heat exchangers, many studies have been conducted, including the addition of spiral fins, and the spacing of these fins on the outer surface. This study examines the heat transfer characteristics of the outer surface. The heat exchanger is made of galvanized pipe with an inner diameter of 20 mm and an outer diameter of 22 mm. It has a passage length of 300 mm with a sharp turn of 81 mm.

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WU, S. Y., X. F. YUAN, Y. R. Li, and L. PENG. "EXERGY TRANSFER CHARACTERISTICS ON LOW TEMPERATURE HEAT EXCHANGERS." International Journal of Modern Physics B 21, no. 18n19 (2007): 3503–5. http://dx.doi.org/10.1142/s0217979207044846.

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By analyzing exergy transfer process of the low temperature heat exchangers operating below the surrounding temperature, the concept of exergy transfer coefficient is put forward and the expressions which involving relevant variables for the exergy transfer coefficient, the heat transfer units number and the ratio of cold to hot fluids heat capacity rate, etc. are derived. Taking the parallel flow, counter flow and cross flow low temperature heat exchangers as examples, the numerical results of exergy transfer coefficient are given and the comparison of exergy transfer coefficient with heat tr

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Kaminskii, V. A., and R. M. Nikulin. "Modeling of the heat transfer in cross-flow heat exchangers." Theoretical Foundations of Chemical Engineering 40, no. 1 (2006): 47–50. http://dx.doi.org/10.1134/s0040579506010076.

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Bes, Th. "Thermal performances of codirected cross-flow heat exchangers." Heat and Mass Transfer 31, no. 4 (1996): 215–22. http://dx.doi.org/10.1007/bf02328611.

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Bes, T. "Thermal performances of codirected cross-flow heat exchangers." Heat and Mass Transfer 31, no. 4 (1996): 215–22. http://dx.doi.org/10.1007/s002310050048.

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Diaz, Gerardo. "Controllability of cross-flow two-phase heat exchangers." International Journal of Heat and Mass Transfer 50, no. 23-24 (2007): 4559–67. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2007.03.024.

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Bury, Tomasz, and Małgorzata Hanuszkiewicz Drapała. "Evaluation of selected methods of the heat transfer coefficient determination in fin-and-tube cross-flow heat exchangers." MATEC Web of Conferences 240 (2018): 02004. http://dx.doi.org/10.1051/matecconf/201824002004.

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The work is a part of a thermodynamic analysis of a finned cross-flow heat exchanger of the liquid-gas type. The heat transfer coefficients on the liquid and the gas side and the area of the heat transfer are the main parameters describing such a device. The basic problem in computations of such heat exchangers is determination of the coefficient of the heat transfer from the finned surfaces to the gas. The differences in the heat transfer coefficient local values resulting from the non-uniform flow of mediums through the exchanger complicates the analysis additionally. Six Nusselt number rela

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