ABSTRACT The temperature‐history (temp‐hist) method offers a straightforward and effective technique for ascertaining the thermal‐physical properties of phase change materials (PCMs). This study explores three combinations eutectic (EPCMs): organic–organic, organic–inorganic, inorganic–inorganic, aiming to identify most suitable EPCM based on their heat conduction coefficient, capacity, enthalpy fusion solidification process. experimental findings revealed that inorganic–inorganic...

Present study deals with the theoretical analysis for performance comparison of automotive waste heat recovery system EG-W, ZnO and MgO nanofluidas coolants TEG system. Effects on parameters i.e power output, conversion efficiency circuit voltage exhaust inlet temperature, total area TEG, Reynolds number particle concentration nanofluids have been investigated. Theoretical revealed enhancement in output power, nanofluid, followed by EG-W coolants. The using 1% vol. fraction nanofluid at an...

Abstract Enhancement in heat transfer of the cold side is vital to amplify performance a thermoelectric generator (TEG). With enriched thermophysical properties nanofluids, significant improvement process can be obtained. The current study concerns comparison an automobile waste recovery system with EG‐water (EG‐W) mixture, ZnO, and SiO 2 nanofluid as coolants for TEG system. effects on parameters, that is, circuit voltage, conversion efficiency, output power exhaust inlet temperature, total...

Abstract The present study deals with the energy and exergy analysis of a wavy fin radiator deploying various shapes Al 2 O 3 ‐water as nanocoolant. effects effectiveness, pumping power, heat transfer rate, performance index variously shaped nanoparticles, mainly spherical, brick, platelet, on coolant flow rates air velocities have been investigated. Also, impacts entropy, second law efficiency, entropy generation number, irreversibility considered steady‐state assumptions. Theoretical...

Abstract The thermal performance analysis of a radiator with dissimilar shape nanoparticles, i.e., cylindrical (CNT)–platelet (graphene), spherical (Al2O3)–platelet and (Al2O3)–cylindrical (CNT) composition-based hybrid nanofluid for coolant flowrate 6 l/min, air velocity 10.6 m/s, 1.3% vol. faction has been studied compared. Results revealed that as enhances the exergy–energy radiator. In this study, (graphene) results decrement in while yields better velocity. Particle influenced...

Abstract The impacts of melting behavior on the thermal performance triple tube energy storage (TT-TES) and double (DT-TES) systems employing cetyl alcohol 3% v/v. MXene nano-enhanced PCM (NEPCM) are compared numerically evaluated in this work. For both DT-TES TT-TES systems, following were investigated connection to time: system efficiency, discharged energy, heat transfer rate, exergy destruction, entropy generation number, exergetic fraction, temperature contours. In addition, effect...

Abstract Technology innovation requires advanced heat transporting techniques to fulfill better exergy and economic behavior of compact air exchangers (HXs). Three different turbulator inserts, TTIs, PTTIs, DTTIs (twisted perforated twisted dimpled respectively), are used in HX on the tube side as a passive technique for transfer enhancement. The present investigation deals with exergo-economic sustainable analysis utilizing several water-based tripartite hybrid nanofluids (THdNFs), formed...

Abstract Energy and exergy analysis comparison of lauric stearic acid phase‐change material (PCM)–based energy storage system integrated with engine exhaust have been investigated in the present study, which provides more realistic assessment than conventional analysis. On basis thermodynamic laws, energy, exergy, charging efficiencies, availability PCM thermal various mass fractions at full load. The saved for PCMs overall is quantified were compared. results revealed a considerable...

Abstract The focus of this paper is to optimize the air‐side performance a wavy fin and tube heat exchanger at different design parameters on an individual target response using Taguchi method. However, statistical concept, gray relational analysis, also studied for combined optimization, considering all responses time. Based requirement, parametric study regarded as more significant transfer lower frictional factor. Experimental correlations were available used 27 orthogonal runs....

Abstract In the current study, optimization of performance parameters like effective power (EP), density (EPD), efficiency (EE), and different heat losses with respect to six engine control parameters, that is, emulsion fuel, compression ratio, equivalence speed, residual gas fraction, fuel injection pressure three levels each, were performed. Taguchi method is used design L 27 orthogonal array, using Minitab17 software. Optimization individual performed signal noise ratio curve, Grey...

In this experimental investigation, the impact of engine load, compression ratio, and percentage blends biofuel on exergy, energy, sustainability parameters for samples diesel based (10–40% v/v) biodiesel were performed variable ratio engine. The brake thermal efficiency, exergy sustainability, destruction rate, other found to escalate with escalating Shorea robusta methyl ester fuel blends. energy efficiency 2.05%, 6.98%, 10.63%, respectively higher than 10%, 30%, 40% 2.23%, 8.67%, 9.22%,...

Abstract In this experimental study, a designed vertical shell and tube type thermal energy storage system, with the effect of natural convection during melting solidification process is investigated. The temperature variation at different positions both in axial radial locations are measured lauric acid PCM. Results revealed that 0.4 kg PCM required time 4800 seconds for completion (i.e., liquid fraction=1) within predicted cylindrical system. Fourier number, Rayleigh Nussult number...

ABSTRACT The present study numerically investigates the energy and exergy analysis of solidification phase change materials within a double tube triple latent heat storage unit using ANSYS Fluent. Double thermal system's characteristics are examined MXene nano‐enhanced material to determine system efficiency, discharged energy, transfer rate, destruction, entropy generation number, exergetic liquid fraction, temperature contours. result revealed that with pure cetyl alcohol PCM has 14.76%...

Abstract Evaluations were conducted on the thermal performance of an organic Rankine cycle (ORC) system using three fluids as evaporative at a low‐grade heat source. The modified ORC evaporators replaced with three‐fluid system, which included hot top and bottom isopentane working fluid in middle section. Furthermore, assessment transfer ratio outer inner tubes ( Q 2 / 1 ) varying from 25:75 to 75:25 has been investigated. impact fluid's ratios saturated steam ORC's was examined, temperature...

Abstract A comparative theoretical performance analysis for diesel, 5% water in diesel emulsion (WiDE), and 10% WiDE as fuels a single‐cylinder engine is presented here. Variations parameters such effective power density (EPD), (EP), efficiency (EE), along with compression ratio equivalence ratio, have been analyzed on the basis of isobaric heat addition isochoric rejection assumptions. Also, friction loss, exhaust total loss occurring engines above‐mentioned discussed. Theoretical revealed...

Experimental investigation on the energy, sustainability, and exergy based analysis have been performed for 5% water in diesel emulsion (WiDE) fuel, 50 ppm carbon nanotube (CNT) aluminium oxide (Al2O3) nano-additive fuels engine with changeable speed load present study. Analysis revealed that parameters brake thermal efficiency (BTE), efficiency, destruction rate, other higher values increasing all fuel samples. The BTE 5%WiDE, 5%WiDE-Al2O3 5%WiDE-CNT nano additives are found to be 1.49%,...