Comparative numerical study of flow characteristics in shell &amp; helical coil heat exchangers with hybrid models

Kumar, Gaurav; Gagandeep, .; Kumar, Ashutosh; Ansari, Naushad Ahmad; Zunaid, Mohammad

doi:10.1016/j.matpr.2021.01.775

Cited by 4 publications

(3 citation statements)

References 33 publications

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“…Facts show that more than 50% of the energy used is wasted as waste heat that can be used as an energy source [47], [50], [51]. Waste heat recovery energy conservation technology equipment, one of which is a heat exchange [47], where the type of heat exchanger is a plate heat exchanger [52][53][54][55], tube bank heat exchanger [56][57][58][59][60][61], shell and helical coil heat exchangers [62][63][64][65][66][67][68][69], shell and tube heat exchangers [70][71][72][73], dan shell and serpentine tube heat exchangers [74][75][76][77][78].…”

Section: Introductionmentioning

confidence: 99%

Thermal Performance of Staggered Bare Tube Bank Heat Exchanger as Air Pre-Heater for Seaweed Convective Dryer

Titahelu,

Tupamahu,

Tentua

et al. 2024

metiks

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Abstrak Pemanfaatan energi limbah panas pengering dengan suhu keluar < 55 C melalui penukar kalor tube bank bare staggered sebagai pemanas awal udara untuk pengeringan rumput laut. Penelitian bertujuan untuk mendapatkan kecepatan udara efektif dimana kinerja termal maksimum dan suhu udara keluar penukar kalor. Metode penelitian eksperimental dengan memvariasikan kecepatan udara 0,5 hingga 2,5 m/s pada ST, SL, D dan L konstan. Pengambilan data terukur kecepatan udara bebas, suhu fluida dingin, dan suhu fluida panas setelah sistem mencapai keadaan tunak. Hasil penelitian menunjukkan bahwa semakin meningkat kecepatan udara bebas maka semakin besar pula kinerja termal dan koefisien konveksi masing-masing sebesar 38,77% dan 38,05% pada kecepatan udara bebas maksimum. Sebaliknya semakin besar kecepatan udara bebas maka suhu keluar akan semakin menurun sebesar 99,60%, dimana suhu udara keluar maksimum berada pada kecepatan udara bebas 2,5 m/s sebesar 303,6 K atau kenaikan sebesar 1,9 derajat. Disimpulkan bahwa sebaiknya penukar kalor ini beroperasi pada kecepatan udara bebas 1,0 m/s guna menjaga keseimbangan kinerja termal dan suhu udara keluar.

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Section: Introductionmentioning

confidence: 99%

Thermal Performance of Staggered Bare Tube Bank Heat Exchanger as Air Pre-Heater for Seaweed Convective Dryer

Titahelu,

Tupamahu,

Tentua

et al. 2024

metiks

View full text Add to dashboard Cite

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“…Iyer et al integrated GA and Cohort Intelligence for optimizing geometrical configurations of a shell and tube heat exchanger. Similarly, Kumar et al used this technique to optimize shell and helical coil heat exchangers.…”

Section: Introductionmentioning

confidence: 99%

“…Lara-Montaño and Gómez-Castro reported Gray Wolf Optimizer as an effective and time-saving technique for minimizing the annual operating cost of shell and tube-type heat exchangers. Other researchers have applied the Cohort Intelligence technique to solve heat transfer problems. − Xu et al highlighted this technique as convenient and less time-consuming to maximize heat transfer capacity and minimize the pressure drop of an annual radiator. Iyer et al integrated GA and Cohort Intelligence for optimizing geometrical configurations of a shell and tube heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Heat Loss from an Insulation Material and Boundary Layer Thickness of Airflow through a Hot Plate Using Nonlinear Least-Squares Error and Linear Programming Algorithms

Alrasheed

2023

ACS Omega

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Heat loss is a major challenge in heat transfer problems. Several researchers have minimized heat loss for different heat transfer cases, focusing on one optimization technique; however, not all optimization techniques are suitable for a given problem. A limited number of studies have compared different techniques for a given problem under boundary conditions and constraints. This review revisits basic heat transfer problems and identifies a promising technique for each problem to minimize heat loss. The paper considers three techniques: nonlinear least-squares error (LSE), interior point linear programming (IPLP), and genetic algorithm. Two cases are studied: 1. heat loss optimization from cylindrical insulating surfaces and 2. laminar airflow on a heated plate. The results are compared for each technique, and a suitable technique is recommended for each considered case. Nonlinear LSE is found to be most suitable for case 1. IPLP and GA are recommended for the Case 2 problem. The average thermal conductivity is found to be 0.081 W/mK. The average insulation thickness is found to be 213.25 mm. This research will act as a basis for future research to justify and implement suitable techniques for different heat transfer problems.

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Performance characteristics of shell and helically coiled tube heat exchanger under different tube cross-sections, inclination angles and nanofluids

Elsaid

Ammar

Lashin

et al. 2023

Case Studies in Thermal Engineering

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Comparative numerical study of flow characteristics in shell & helical coil heat exchangers with hybrid models

Cited by 4 publications

References 33 publications

Thermal Performance of Staggered Bare Tube Bank Heat Exchanger as Air Pre-Heater for Seaweed Convective Dryer

Thermal Performance of Staggered Bare Tube Bank Heat Exchanger as Air Pre-Heater for Seaweed Convective Dryer

Optimizing the Heat Loss from an Insulation Material and Boundary Layer Thickness of Airflow through a Hot Plate Using Nonlinear Least-Squares Error and Linear Programming Algorithms

Performance characteristics of shell and helically coiled tube heat exchanger under different tube cross-sections, inclination angles and nanofluids

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