Thermo-hydraulic performance augmentation in residential heating applications using a novel multi-fluid heat exchanger with helical coil tube insertion
Restricted accessResearch articleFirst published online March, 2024
Thermo-hydraulic performance augmentation in residential heating applications using a novel multi-fluid heat exchanger with helical coil tube insertion
This study proposes a heat transfer augmentation technique using a brazed helix tube (BHT) fabricated from a helical tube with precision brazing between coil turns in a novel multi-fluid heat exchanger (NMFHE) for simultaneous heating of water and air using solar energy. The thermo-hydraulic performance of the present NMFHE for residential heating of water (CW) and air (CA) using hot water (HW) is tested experimentally. Nusselt number and friction factor for fluid flow inside the NMFHE are calculated as the thermo-hydraulic measure relating to variations in flow rate, inlet temperature, and flow configuration. Optimal flow parameters for overall optimized performances that is, maximum heat transfer and minimum pressure drop in NMFHE are determined using the Taguchi Grey relational approach. NMFHE performs efficiently in the Counterflow (cold water reverse) flow configuration with HW flow rate of 100 LPH, CW flow rate of 200 LPH, and HW inlet temperature of 70°C. The CW flow rate has the greatest impact on both the Nusselt number and friction factor, with a contribution of 82.37% and 93.42%, respectively. A confirmation test has been conducted to validate the findings, revealing a significant performance improvement of 32.19% when using the Grey relational grade model.
BatmazESandeepKP. Overall heat transfer coefficients and axial temperature distribution in a triple tube heat exchanger. J Food Process Eng2008; 31(2): 260–279. DOI: 10.1111/J.1745-4530.2007.00154.X
4.
KumarVFaizeeBMridhaM, et al.Numerical studies of a tube-in-tube helically coiled heat exchanger. Chem. Eng. Process. - Process Intensif2008; 47(12): 2287–2295. DOI: 10.1016/J.CEP.2008.01.001
5.
HameedVMHamadFJ. Implementation of novel triangular fins at a helical coil heat exchanger. Chem. Eng. Process. - Process Intensif2022; 172: 108745. DOI: 10.1016/J.CEP.2021.108745
6.
Haitham HassanJHameedVM. Evaluate the hydrothermal behavior in the heat exchanger equipped with an innovative turbulator. S Afr J Chem Eng2022; 41: 182–192. DOI: 10.1016/J.SAJCE.2022.06.003
QuadirGAJarallahSSSalman AhmedN, et al.Experimental investigation of the performance of a triple concentric pipe heat exchanger. Int J Heat Mass Transf2013; 62: 562–566. DOI: 10.1016/J.IJHEATMASSTRANSFER.2013.03.033
9.
PeignéPInardCDruetteL, et al.Experimental study of a triple concentric tube heat exchanger integrated into a wood-based air-heating system for energy-efficient dwellings. MDPI2013; 6: 184–203. https://www.mdpi.com/45316
10.
SinghSMishraMJhaP. Experimental investigations on thermo-hydraulic behaviour of triple concentric-tube heat exchanger. SAGE. 2015; 229: 299–308. DOI: 10.1177/0954408914531118
11.
GomaaAHalimMAElsaidAM. Experimental and numerical investigations of a triple concentric-tube heat exchanger. Appl Therm Eng2016; 99: 1303–1315. DOI: 10.1016/J.APPLTHERMALENG.2015.12.053
12.
GomaaAHalimMAElsaidAM. Enhancement of cooling characteristics and optimization of a triple concentric-tube heat exchanger with inserted ribs. Int J Therm Sci2017; 120: 106–120. DOI: 10.1016/J.IJTHERMALSCI.2017.06.002
13.
MohapatraTPadhiBNSahooSS. Experimental investigation of convective heat transfer in an inserted coiled tube type three fluid heat exchanger. Appl Therm Eng2017; 117: 297–307. DOI: 10.1016/J.APPLTHERMALENG.2017.02.023
14.
TouatitABougriouC. Optimal diameters of triple concentric-tube heat exchangers. International Journal of Heat and Technology2018; 36(1): 367–375. DOI: 10.18280/ijht.360149
15.
MajidiDAlighardashiHFarhadiF. Experimental studies of heat transfer of air in a double-pipe helical heat exchanger. Appl Therm Eng2018; 133: 276–282. DOI: 10.1016/J.APPLTHERMALENG.2018.01.057
16.
WangGWangDDengJ, et al.Experimental and numerical study on the heat transfer and flow characteristics in shell side of helically coiled tube heat exchanger based on multi-objective. Elsevier. 2019. https://www.sciencedirect.com/science/article/pii/S0017931018349391 (accessed March 15, 2023).
17.
WangGWangDPengX, et al. Experimental and numerical study on heat transfer and flow characteristics in the shell side of helically coiled trilobal tube heat exchanger. Elsevier. 2019. https://www.sciencedirect.com/science/article/pii/S1359431118353675 (accessed March 15, 2023).
18.
LiangCWangYLiX. Management, and undefined 2022, “Energy-efficient air conditioning system using a three-fluid heat exchanger for simultaneous temperature and humidity control.” Elsevier. https://www.sciencedirect.com/science/article/pii/S0196890422010135 (accessed March 15, 2023).
19.
AfzalAIslamMTKaladgiAR, et al.Experimental investigation on the thermal performance of inserted helical tube three-fluid heat exchanger using graphene/water nanofluid. J Therm Anal Calorim2022; 147(8): 5087–5100. DOI: 10.1007/S10973-021-10869-1
20.
MohapatraTSahooSSMishraSS, et al.Performance investigation of a three fluid heat exchanger used in domestic heating applications. Int J Automot Mech Eng2022; 19(2): 9693–9708. DOI: 10.15282/IJAME.19.2.2022.06.0748
21.
LiuPWangRLiuS, et al.Experimental study on the thermal-hydraulic performance of a tube-in-tube helical coil air–fuel heat exchanger for an aero-engine. Energy2023; 267: 126626. DOI: 10.1016/J.ENERGY.2023.126626
22.
MoffatRJ. Describing the uncertainties in experimental results. Exp Therm Fluid Sci1988; 1(1): 3–17. DOI: 10.1016/0894-1777(88)90043-X
23.
SahinBYakutKKotciogluI, et al.Optimum design parameters of a heat exchanger. Appl Energy2005; 82(1): 90–106. DOI: 10.1016/J.APENERGY.2004.10.002
24.
PandeyNMurugesanKThomasHR. Optimization of ground heat exchangers for space heating and cooling applications using Taguchi method and utility concept. Appl Energy2017; 190: 421–438. DOI: 10.1016/J.APENERGY.2016.12.154
25.
MiansariMValipourMAArastehH, et al.Energy and exergy analysis and optimization of helically grooved shell and tube heat exchangers by using Taguchi experimental design. J Therm Anal Calorim2020; 139(5): 3151–3164. DOI: 10.1007/S10973-019-08653-3
26.
MohapatraTPadhiBNSahooSS. Analytical investigation and performance optimization of a three fluid heat exchanger with helical coil insertion for simultaneous space heating and water heating. Heat Mass Tran2019; 55(6): 1723–1740. DOI: 10.1007/S00231-018-02545-2/METRICS
27.
ChamoliSYuPKumarA. Multi-response optimization of geometric and flow parameters in a heat exchanger tube with perforated disk inserts by Taguchi grey relational analysis. Appl Therm Eng2016; 103: 1339–1350. DOI: 10.1016/J.APPLTHERMALENG.2016.04.166
28.
CelikNPusatGTurgutE. Application of Taguchi method and grey relational analysis on a turbulated heat exchanger. Int J Therm Sci2018; 124: 85–97. DOI: 10.1016/J.IJTHERMALSCI.2017.10.007
29.
KumarVSahooRR. Parametric and design optimization investigation of a wavy fin and tube air heat exchanger using the T-G technique. Heat Trans2022; 51(5): 4641–4666. DOI: 10.1002/HTJ.22516
