scholarly journals Fouling Characteristics of Milk-Water System in a Plate Heat Exchanger

2019 ◽  
Vol 8 (4) ◽  
pp. 4829-4833
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Dairy Products ◽  
Water System ◽  
Fouling Resistance ◽  
Enhancement Of Heat Transfer ◽  
Technical Performance ◽  
Plate Type ◽  
Milk And Dairy Products ◽  
Fouling Characteristics

Fouling is a major problem which affects technical performance and economics of the plate type heat exchanger used for the pasteurization of milk and dairy products. In the present work, experiments were conducted with milk- water system using corrugated plate type heat exchanger (model: M3-FG Alfa Laval) with 13 plates. Experiments were conducted to determine the heat transfer characteristics and fouling resistance by varying the temperature and the flow rate. The enhancement of heat transfer by fouling minimization with the coating of plates with epoxy coating was also studied and reported

scholarly journals Fundamental Studies on the Heat Transfer Characteristics of a Plate Type Heat Exchanger

1967 ◽  
Vol 31 (9) ◽  
pp. 872-877,a1 ◽  
Author(s):  
Hirotaka Konno ◽  
Katsuto Okada ◽  
Keigo Sasabayashi ◽  
Shigemori Ohtani
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Plate Type

Analisis Perbandingan Jenis Material Penukar Kalor Plat Datar Aliran Silang Untuk Proses Pengeringan Kayu

2021 ◽  
Vol 9 (1) ◽  
pp. 60-71
Author(s):  
Abeth Novria Sonjaya ◽  
Marhaenanto Marhaenanto ◽  
Mokhamad Eka Faiq ◽  
La Ode M Firman
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Flat Plate ◽  
Heat Exchangers ◽  
Fluid Dynamic ◽  
Cross Flow ◽  
Plate Heat ◽  
Dry Air ◽  
Copper Material ◽  
Plate Type

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 and gas on the flat plate heat exchanger and copper material had a better heat delivery by reaching the temperature out of dry air and gas on the flat plate type heat exchanger of successive cross flow and.   overall heat transfer coefficient value and the effectiveness value of the heat exchanger of the heat transfer characteristics that occur with the cross-flow flat plate type heat exchanger in copper material of 251.74725 W/K and 0.25.

Study on the Methods of Predicting the Fouling Characteristics of Plate Heat Exchanger Based on Water Quality Parameters

2013 ◽  
Vol 459 ◽  
pp. 153-158
Author(s):  
Xiao Qiang Wen
Keyword(s):  
Water Quality ◽  
Heat Exchanger ◽  
Experimental System ◽  
Quality Parameters ◽  
Plate Heat Exchanger ◽  
Water Quality Parameters ◽  
Fouling Resistance ◽  
Plate Heat ◽  
The Impact ◽  
Fouling Characteristics

Fouling characteristic of plate heat exchanger was studied through the experimental system, with the Songhua River water as working fluid. Several water quality parameters: pH value, conductivity, dissolved oxygen, turbidity, hardness, alkalinity, chloride ion, iron ion, chemical oxygen demand, total bacterial count, which had great influence on the formation of fouling, as well as running condition, fouling resistance and other parameters were measured through the experimental system built. A group of fouling data of the typical water quality was obtained. Two prediction models of fouling characteristics of the plate heat exchanger were built based on partial least squares algorithm (PLS) and support vector regression machine (SVR) with water quality parameters as independent variables and fouling resistance as dependent variable, and the impact of water quality parameter on predicting accuracy was analyzed. Research results showed that: the prediction accuracy of two methods could be controlled within 12.5% and meet the requirements of the project. Through the comparison of the prediction results, it was proved that the SVR method was better than the method of PLS. The impact of the water quality parameters on prediction model was discussed by the means of deleting the water quality parameters one by one.

scholarly journals On the Heat Transfer Enhancement of Plate Fin Heat Exchanger

2018 ◽  
Author(s):  
Yuan Xue ◽  
Zhihua Ge ◽  
Xiaoze Du ◽  
Lijun Yang
Keyword(s):  
Heat Transfer ◽  
Performance Evaluation ◽  
Heat Exchanger ◽  
Aspect Ratio ◽  
Evaluation Criteria ◽  
Swirl Flow ◽  
Design Parameters ◽  
Cfd Simulations ◽  
Enhancement Of Heat Transfer ◽  
Aspect Ratios

The plate fin heat exchanger is the compact heat exchanger applied in many industries because of its high thermal performance. To enhance the heat transfer of plate fin heat exchanger in further, three new kinds of wavy plate fins, namely perforated wavy fin, staggered wavy fin and discontinuous wavy fin are proposed and investigated by CFD simulations. The effects of key design parameters, including that of waviness aspect ratios, perforation diameters, stagger ratios and breaking distance are investigated, respectively, with the Reynolds number changes from 500 to 4500. It is found that due to the swirl flow and efficient mixing of fluid, the perforation, serration and breaking techniques are beneficial for the enhancement of heat transfer compared to the traditional wavy fin. At the same time, serration is beneficial to reduce the friction factor, and the breaking technique can reduce heat transfer area as well as enhance heat transfer performance. Through the performance evaluation criteria, the staggered wavy fin has an advantage over the small waviness aspect ratio compared to the perforated wavy fin. The maximum performance evaluation criteria (PEC), as high as 1.24, can be obtained for the perforated wavy fin at the largest waviness aspect ratio.

scholarly journals Performance Assessment of the Heat Exchanger with and without a Coating of Hybrid Nanoparticles the User Cooling System in Solar Heating Systems

2021 ◽  
Vol 39 (5) ◽  
pp. 1460-1468
Author(s):  
Khalid Faisal Sultan ◽  
Mohammed Hassan Jabal ◽  
Ameer Abed Jaddoa
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Cooling System ◽  
Hybrid Nanoparticles ◽  
Coating Process ◽  
Enhancement Of Heat Transfer ◽  
Lotus Effect ◽  
Nano Structure ◽  
Nano Coating ◽  
The Stability

The aim of this article was to examine the effect of hybrid nano – coating that could potentially impact the enhancement of heat transfer coefficient of distilled water, Reynolds number, and temperature through a swirl heat exchanger, as well as the indicator of the effect Zeta voltage in the coating process. In this experimental work, type of coating used was Aluminum (Al) + Aluminum oxide Al2O3. Outcomes of study showed that the coating of heat exchanger is much better than without coating in improving the thermal properties for liquids passing through heat exchanger as well as increasing the heat exchange through the surface of the exchanger. Results in the article indicated that the use of hybrid nano – structure coating is for inducing the feature of super – hydrophobicity for the surface that touches the fluid included within the heating transferring. Such feature can make an increase in the heating transferring factor and a decreasing in power losing produced via friction. This article indicated that the Zeta voltage analysis is to show the stability of the hybrid nanofluids used in the coating process. The enhanced technology depends upon the concept that exists in nature under the name “Lotus effect” to get super-hydrophobic surfaces. The rate of improvement in heat transfer using hybrid nanoparticles is 33% compared to that without coating condition.

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