Double pipe heat exchanger (DPHE) is one of the commonly used heat exchangers owing to its simple structure and high adaptability . The passive method, which can enhance the heat transfer with high stability and without consuming additional energy, is the most popular choice for heat transfer enhancement of DPHEs.Author: Chao Luo, Chao Luo, KeWei Song, Toshio TagawaPublish Year: 2021sp.info Heat transfer enhancement of double pipe heat exchanger ...Dec 01, 2018 · The double pipe heat exchanger type has low heat transfer rate compared with other types of heat exchangers. Therefore, this article aims to enhance the heat transfer rate of that type of heat exchanger by introducing a rotation of the heat exchanger inner pipe combined with changing the pipes eccentricity.Cited by: 11Publish Year: 2018Author: Marwa A.M. Ali, Wael M. El-Maghlany, Yehia A. Eldrainy, Abdelhamid Attiasp.info How to increase heat transfer in double pipe heat exchanger?The double pipe heat exchanger type has low heat transfer rate compared with other types of heat exchangers. Therefore, this article aims to enhance the heat transfer rate of that type of heat exchanger by introducing a rotation of the heat exchanger inner pipe combined with changing the pipes eccentricity.See all results for this questionsp.info How are twisted tape inserts used in heat exchangers?The twisted tape inserts have been used as a heat transfer enhancement device in last few decades and particular most widely used in heat exchangers to reduce their size and cost.See all results for this question
Finally, the following enhancements in geometries are discussed: tube inserts, tube deformation, baffles, finning. Keywords: Compact heat exchanger, Enhancements in heat exchanger, Nano fluid, Shell and tube heat exchanger. INTRODUCTIONSee all results for this questionsp.info How is the effectiveness of heat transfer enhancement measured?The effectiveness of a heat transfer enhancement technique is evaluated by the Thermal Performance Factor which is a ratio of the change in the heat transfer rate to change in friction factor. Various types of inserts are used in many heat transfer enhancement devices.See all results for this questionsp.info Enhancement of Heat Transfer in Double Pipe Heat …Jan 01, 2019 · Contingent on the prerequisite of the icy water stream rate, next arrangement of readings can be noted down. Fig 4 Double pipe heat exchanger Overall Heat Transfer Coefficient The assurance of the general warmth exchange coefficient is fundamental keeping in mind the end goal to decide the warmth exchanged from the inward pipe to the external pipe.Cited by: 2Publish Year: 2019Author: A. Ponshanmugakumar, A. Ponshanmugakumar, R. Rajavelsp.info Heat Transfer Enhancement in Double Pipe Heat …heat exchanger with insert of equal length and similar operating conditions in order to compare its performance related to heat transfer characteristics. Schematic diagram of double pipe heat exchanger is as shown in Figure 1. Figure 1. Plain double pipe heat exchanger The copper tapes were first cut into 3 equal sizes.
Nov 01, 2021 · In the current study, the effect of twisted and cut-twisted tape inserts on heat transfer enhancement and pressure drop in a counter flow double pipe U-tube heat exchanger has been investigated using experimental approach. This has been compared with bare tubes in the absence of …sp.info (PDF) Heat transfer augmentation in double pipe heat ...2.5.6 Step 6: F or heat transfer coefﬁcient calculation. Hot water at 75 °C is allowed to pass through the inner. pipe of heat exchanger at 1000 LPH (m h = 0.2715 kg/s). Cold water is now ...Estimated Reading Time: 5 minssp.info Thermal Performance Evaluation of a Double Pipe Heat ...Heat exchangers are widely used for heat recovery purposes in many industrial applications such as gasification systems. In a biomass gasification system situated at Melani village in Eastern Cape of South Africa, a significant quantity of heat energy is lost during syngas cooling. Thus, a heat exchanger was constructed and installed in the gasification system for the purpose of heat recovery. Therefore, the aim of this study is to evaluate the performance of the heat exchanger under variable operating conditions f…See more on hindawi.comCited by: 2Publish Year: 2020Author: Nwabunwanne Nwokolo, Patrick Mukumba, KeChrist ObilekeFeedstock size: 0.075 × 0.068 × 0.043 msp.info (PDF) Heat Transfer Characteristics in a Double-Pipe Heat ...An experimental investigation has been carried out to study the enhancement in heat transfer coefficient by inserting coiled wire around the outer surface of the inner tube of the double-pipe heat ...Estimated Reading Time: 6 mins
Mar 01, 2018 · Numerical design and investigation of heat transfer enhancement and performance for an annulus with continuous helical baffles in a double-pipe heat exchanger Energy Convers. Manage. , 133 ( 2017 ) , pp. 76 - 86sp.info Numerical and experimental study of the heat transfer ...Dec 01, 2020 · (21) P E C = (U c U s) [(Δ p c + Δ p a c) (Δ p s + Δ p a s)] 1 / 3 where U c is the overall heat transfer coefficient of the double pipe heat exchanger with corrugated tube, U s is the overall heat transfer coefficient of the double pipe heat exchanger with smooth tube, Δ p c is the pressure drop of the double pipe heat exchanger at the inner corrugated tube, Δ p a c is the pressure drop of the …sp.info HEAT TRANSFER ENHANCEMENT IN A DOUBLE PIPE HEAT …Oct 03, 2015 · transfer coefficient f or Al 2 O 3 and 399.15W/m 2 K is f or water, with a mass flow rate of 0.0125l/sec. The enhancement ratio of. the overall h eat transfe r coeff icient is 1.754, this means ...Estimated Reading Time: 6 minssp.info CFD Analysis for the Enhancement of Heat Transfer in a ...et.al. inserted helical inserts in a double pipe heat exchanger and carried CFD analysis with different boundary conditions of hot and cold fluids and concluded that with helical twisted tapes 10-15% of enhancement of heat transfer has been achieved with an allowable pressure drop . Patnala Sankara
Jun 14, 2019 · In this article, a double pipe heat exchanger (DPHE) with a rectangular cut twisted tape (RCT) in its inner tube side was investigated. Different cut depth ratios (DR = d/W = 0.15, 0.24 and 0.33) and cut width ratios (WR = w/W = 0.15, 0.24 and 0.33) for constant twist ratio (Y = 3.0) were considered during the numerical study. The achieved results were compared with plain double pipe heat …Cited by: 2Publish Year: 2019Author: Ali Barzegar, Dovood Jalali Vahidsp.info Experimental Performance of Double Pipe Heat …heat exchanger importance, many heat enhancement techniques are adopted to improve the performance of heat exchanger. An experimental investigation has been done for a double pipe heat exchanger for plain pipe and pipe with Rectangular cut with wire coil.sp.info Theoretical and experimental studies of heat transfer in a ...Feb 18, 2020 · This study represents the performance of Fe 2 O 3 /water nanofluid (20 nm) in a double-pipe heat exchanger equipped with twisted-tape inserts for enhancing heat transfer. Fe 2 O 3 /water nanofluid is used because it has a higher thermal conductivity. Considered parameters include mass flow rate, twist ratio of tape, temperature and the volumetric portion of nanoparticles to water.Cited by: 19Publish Year: 2020Author: Reza Aghayari, Heydar Maddah, Seyed Mohsen Pourkiaei, Mohammad Hossein Ahmadi, Lingen Chen, Mahyar G...sp.info NUMERICAL AND EXPERIMENTAL INVESTIGATION OF A …Home Journals Heat Transfer Research Volume 53, 2022 Issue 1 NUMERICAL AND EXPERIMENTAL INVESTIGATION OF A DOUBLE-PIPE HEAT EXCHANGER WITH SiO 2 NANO-ADDITIVES Heat Transfer Research Editors-in-Chief: Yong X. Tao Oleg G. Penyazkov
Jan 29, 2020 · The enhancement of heat transfer inside the double pipes of heat exchanger was numerically examined by Alhusseny et al. . They used active and passive methods to generate this enhancement. They used active and passive methods to generate this enhancement.Cited by: 2Publish Year: 2020Author: Jinan A. Hamzah, Mohammed A. NimaEstimated Reading Time: 13 minssp.info (PDF) CFD Analysis for the Enhancement of Heat Transfer in ...Heat transfer enhancement on double pipe heat exchanger by wire coiled and pin wire coiled turbulator inserts, J. kalil basha,m.raja. narasimman, kumaravel, International Journal of Research in ...Estimated Reading Time: 6 minssp.info Enhancement of Heat Transfer Using Fe3O4 / Water …working life of the equipment. Enhancement in heat transfer can be achieved by either passive methods which does not require external power or active methods, which require external power. Bergles  Twisted tape techniques have been used to augment heat transfer in double pipe heat exchanger.sp.info Numerical and Experimental Investigation of Heat Transfer ...Dec 12, 2018 · For the first part, a heat exchanger of double pipe with counter flow of water were used. This heat exchanger included a semicircular disc baffles attached on the outer surface of the inner tube fitted with twisted tape. The second part used to determine the transfer functions effect and training algorithms on the experimental work.Author: B S khalaf, A H FalihEstimated Reading Time: 7 minsPublish Year: 2018
U-bend double pipe heat exchanger. The experimental results revealed that the increase in heat transfer rate of the TT inserts is found to be strongly influenced by tape-induced swirl. Eiamsa-ard et al.  made a comparative investigation of enhanced heat transfer and pressure loss by insertion of singlesp.info (PDF) Enhancement of Heat Transfer Using Fe3O4 / Water ...They found that there is an enhancement in the heat transfer with the increase in the radius of cut in the twisted tapes. ... Optimization of Performance Parameters of a Double Pipe Heat Exchanger...Estimated Reading Time: 6 minssp.info Experimental assessment of Al2O3 and Cu nanofluids on the ...Jan 24, 2020 · Their numerical results show an increment of 63% in Nusselt number and 54% increment in heat transfer rate when the system is operated at optimum condition. The effect of helical tape inserts on the performance of double pipe heat exchanger was studied experimentally by Salem et al. . It was observed that the helical tape inserts enhance the heat transfer rate significantly when they are …Cited by: 8Publish Year: 2020Author: Esam I. Jassim, Faizan Ahmedsp.info Application of Double Ribbed Twisted Tapes in Heat ...heat transfer, friction factorand pressure drop for Reynolds number ranges from 2000-10000, has studied in double pipe heat exchanger (singlepass). Agrawal et al. (2018) Heat transfer enhancement technique refers to different methods used to increase rate of heat transfer withoutaffecting much overall performance of the system.
Jun 01, 2019 · In the present study, the heat transfer, friction factor and thermal performance factor of rectangular cut twisted tape (RCT) that are inserted in inner tube side of a double pipe heat exchanger (DPHE) are numerically examined. The obtained results have been compared with the performance of heat exchangers, which are equipped/unequipped by typical twisted tape (TT). The RCTs have …Cited by: 2Publish Year: 2019Author: Ali Barzegar, Dovood Jalali Vahidsp.info PAPER OPEN ACCESS Numerical and Experimental …Numerical and Experimental Investigation of Heat Transfer Enhancement in Double Pipe Heat Exchanger To cite this article: B S khalaf and A H Falih 2018 IOP Conf. Ser.: Mater. Sci. Eng. 454 012066 View the article online for updates and enhancements. This content was downloaded from IP address 184.108.40.206 on 05/04/2020 at 04:20Author: B S khalaf, A H FalihPublish Year: 2018sp.info (PDF) Heat Transfer Enhancement in Heat Exchangers With ...The increases up to 208 % and also with the twisted tape the IJE visualization was carried out via a dye injection technique. heat transfer enhance up to 190%. They evaluate the They studied the effects of twist ratios on heat transfer and overall performance during experimentation under the fluid friction.sp.info Optimization of Double Pipe Heat Exchanger with Response ...Jun 30, 2017 · The performance of a double pipe heat exchanger is analyzed using Response Surface Methodology (RSM) with various input parameters namely Reynolds number, twisted ratio(y/w) and concentration of SiO 2 nanofluid of the output response the overall heat transfer coefficients of the double pipe heat exchanger. The experimental design is developed based on Box - Behnken design …
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