Air-side fouling of finned heat exchangers: Part 1, review and proposed test protocol

Inamdar, Harshad V.; Groll, Eckhard A.; Weibel, Justin A.; Garimella, Suresh V.

doi:10.1016/j.ijrefrig.2023.02.017

Cited by 9 publications

(3 citation statements)

References 17 publications

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“…Calculations may be performed to determine the potential locations of hotter zones created by turbulent backflows adjacent to the wall. Because these are the areas most susceptible to fouling, it is essential that they be situated as far from the remainder of the ship as is practically possible 4 . Consequently, Computational Fluid Dynamics (CFD) may be considered a valuable asset for enhancing the efficacy of the design of plate heat exchangers 5 .…”

Section: Literature Reviewmentioning

confidence: 99%

CFD Analysis of Refrigerator Integrated with Atmospheric Water Generator

Deshmukh,

Gautam,

Shirbhate

2023

jmmf

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This Research article discuss about the study of performance analysis. This system is a combination of refrigerator and Atmospheric Water Generator (AWG). The purpose behind integrating two devices is to get benefit of both products together, refrigerator will act as a domestic refrigerator plus the atmospheric water system will generate the fresh distilled water to drink. This system is designed to generate a water of 20 liters per day. Also, it is designed in such a way that, this AWG can attach with various capacity is the refrigerator. Performance evaluation of this system is done with the help of computational fluid dynamics. Fluent module is used in ANSYS software. Various levels of parameter are evaluated, variables considered in the study were Relative humidity, velocity of air in AWG heat exchanger, and temperature of air. The output parameters evaluated like water generation capacity of AWG, Coefficient of Performance (COP) of AWG and refrigerator and heat exchanger efficiency. The results of CFD shows positive results as per design. 24th case has given highest COP 1.26. General, range of COP lie between 1.127 to 1.260. COP of Standard Refrigerator remain between 1.437 to 1.593. Also, it means COP of other two cases are more. As far as COP of Refrigerator concern, COP with AWG is heist i.e. 1.91. But it cannot be clearly state that, COP with AWG is more than COP without AWG.

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Section: Literature Reviewmentioning

confidence: 99%

CFD Analysis of Refrigerator Integrated with Atmospheric Water Generator

Deshmukh,

Gautam,

Shirbhate

2023

jmmf

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“…The designs of HEs were reviewed in numerous studies [28][29][30][31][32] such as double tube HX [33][34][35][36][37], plate HXs [38][39][40][41][42][43][44][45], finned HXs [46][47][48][49][50][51], and shell and tube HXs [2,[52][53][54][55]. The authors aim to conduct an extensive examination of HTE methods in HTHX.…”

Section: Work Justificationmentioning

confidence: 99%

Review of passive methods of heat transfer enhancement in helical tube heat exchanger

Marzouk,

Abou Al-Sood,

El-Said

et al. 2023

Journal of Contemporary Technology and Applied Engineering

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In contemporary times, Helical tube heat exchangers (HTHXs) have gained significant prominence in energy-related sectors, frequently finding application in industrial and technical settings. Their impact on overall system efficiency and size is substantial. A comprehensive review addressing passive methods of heat transfer enhancement in HTHXs is notably absent. This paper justifies its significance by providing a recent and systematic review of available passive methods. The passive approach offers advantages such as the absence of external power requirements and lower operational costs compared to active methods. Studies collectively indicate a noteworthy progression in heat transfer enhancement in HTHXs. The paper meticulously evaluates passive methods like fins, inserts, geometry modifications, and baffles, which collectively represent 18.7%, 22.3%, 42.2%, and 16.8% of research efforts, respectively. Both experimental and numerical studies focus on improving heat transfer in HTHXs. However, further exploration is necessary to understand the negative effects of pressure drop in tube-side flow. Future research should also prioritize the development of geometric designs for HTHX surfaces, potentially incorporating materials coatings to further enhance heat transfer. The authors present insightful issues and ideas that they estimate deserving of additional investigation in subsequent research endeavors.

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“…Zat pengotor pada permukaan penukar panas dapat menghambat laju perpindahan panas [1]. Debu terakumulasi di atas sirip dan di antara sirip, debu terkumpul dalam bentuk bubuk halus dan bila terkena air dapat membentuk endapan berkerak [2,3]. Secara umum, hanya terdapat dua atau tiga baris paling bawah dari fin-tube yang kotor.…”

Section: Pendahuluanunclassified

Perancangan Fin-tube Surface Cleaning System Untuk Pembersihan Air-Cooled Heat Exchanger

Syaifullah,

Muldiani,

Sasono

2023

J.Mek.Ter.

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Pemeliharaan pembersihan permukaan luar fin-tube pada air-cooled heat exchanger dilakukan untuk menjaga performa agar tidak terganggu. Penurunan performa terjadi karena pengendapan zat pengotor berupa debu di permukaan luar fin-tube. Debu terakumulasi di atas sirip dan di antara sirip, debu terkumpul dalam bentuk bubuk halus dan bila terkena air dapat membentuk endapan berkerak. Pemeliharaan pembersihan masih dilakukan dengan menyeprotkan air melalui selang yang dilakukan sepenuhnya menggunakan tenaga manusia selama 80 jam untuk keseluruhan permukaan fin-tube. Untuk meningkatkan efektifitas pembersihan diperlukan inovasi perancangan sistem pembersihan dengan mengalirkan air melalui pipa dan nozel. Rancangan dilakukan secara manual menggunakan perhitungan berprinsip dasar hukum Bernoulli serta dilakukan simulasi menggunakan Ansys Fluent. Rancangan menghasilkan tekanan kerja yang cukup untuk menyuplai air dan kecepatan inlet nozel 0,37 m/s pada masing – masing nozel berjumlah 36 buah setiap fan atau 648 buah untuk mencakup 18 fan. Pembersihan dapat dilakukan dengan baik ketika kecepatan masuk nozel sebesar 0,37 m/s yang membutuhkan waktu pembersihan 59 menit dan mampu membersihkan debu sebanyak 2,40×10-8 kg dengan area pembersihan sebesar 0,75 m2 setiap nozelnya. Sistem pembersihan dioperasikan secara manual bertahap setiap bulan, jika diakumulasikan akan membutuhkan waktu 17,70 jam untuk membersihkan secara keseluruhan. Untuk mendapatkan hasil yang baik proses pembersihan hanya dapat berlangsung ketika fan tidak beroperasi.

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Air-side fouling of finned heat exchangers: Part 1, review and proposed test protocol

Cited by 9 publications

References 17 publications

CFD Analysis of Refrigerator Integrated with Atmospheric Water Generator

CFD Analysis of Refrigerator Integrated with Atmospheric Water Generator

Review of passive methods of heat transfer enhancement in helical tube heat exchanger

Perancangan Fin-tube Surface Cleaning System Untuk Pembersihan Air-Cooled Heat Exchanger

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