Analysis of functionally graded metal foams for the accomplishment of heat transfer enhancement under partially filled condition in a heat exchanger

Jadhav, Prakash H.; Gnanasekaran, N.; Mobedi, Moghtada

doi:10.1016/j.energy.2022.125691

Cited by 21 publications

(5 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence lower porosity near the wall (i.e., near to absorber plate) absorbs more heat from the absorber plate towards WM. Then heat is transferred to the incoming air which is available in the channel [4,71]. Further, the lower porosity occupies a greater specific area density and increases the volumetric heat transfer coefficient.…”

Section: Numerical Results For Different Case Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Thermohydraulic Efficiency of a Solar Air Heater in the Presence of Graded Aluminium Wire Mesh—A Combined Experimental–Numerical Study

2023

Self Cite

View full text Add to dashboard Cite

In this work, aluminium wire mesh (WM) samples with 3, 9, and 18 pores per inch (PPI) and porosities of 0.894, 0.812, and 0.917, respectively, were combined together to form graded structures including 3-9-18, 9-18-3, and 18-3-9 PPIs. A 5 mm thickness for each WM was considered for a length of 2 m and inserted into a single-pass solar air heater (SAH) in which the height of the SAH was 120 mm. For the numerical analysis, a 3D numerical model was considered in ANSYS fluent software, and the Rosseland radiation model renormalization group (RNG) k-ε enhanced wall function was incorporated to account for solar radiation. The local thermal equilibrium (LTE) model was considered to obtain the heat-transfer characteristics of the WM. The numerical results of the thermohydraulic performance parameter (THPP) of the 9-18-3 PPI WM were 13.04% and 11.92% higher than the 3-9-18 and 18-3-9 PPI samples, respectively. Later, 25% of the 9-18-3 graded wire mesh (GWM) was considered at four different locations, i.e., 0, 0.5, 1, and 1.5 m away from the inlet, and analysed to obtain the best location for efficient heat transfer. The computational results show that 1.5 m away from the inlet is the best location among the different locations considered. The experimental results of the GWM at 1.5 m away from the inlet demonstrated a 20.91% and 23.32% increase in thermal efficiency compared to the empty channel for the 0.027 kg/s and 0.058 kg/s mass flow rates, respectively. From numerical-cum-experimental analysis, it was found that inserting 25% length of GWM of the entire length of the test section at a distance of 1.5 m from the inlet in single pass SAH improves the overall performance of the empty channel of single-pass SAH.

show abstract

Section: Numerical Results For Different Case Studiesmentioning

confidence: 99%

“…The use of a porous medium like metal foam, wire mesh, and round-shaped marbles can be helpful in increasing the heat-transfer rate in thermal application devices. Porous media is used in thermal applications such as heat exchangers [3,4], vertical channels [5][6][7], heat storage systems [8,9], and solar applications [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Thermohydraulic Efficiency of a Solar Air Heater in the Presence of Graded Aluminium Wire Mesh—A Combined Experimental–Numerical Study

2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…Prak H. Jadhav et al (4) evaluated heat exchanger pressure drop and heat transmission with partially filled high-porosity aluminum and copper foams. M1, M2, and M3 are partially filled with positive (increasing, 20/45 PPI), negative (decreasing, 45/20 PPI), and compound (45 Cu/20 Al PPI) graded porous layer thickness.…”

Section: Introductionmentioning

confidence: 99%

Forced convective rate and pressure drop through a packed annulus: a numerical simulation

Sabah Falieh,

Najeeb Shehab

2024

Salud, Ciencia y Tecnología - Serie de Conferencias

View full text Add to dashboard Cite

Porous materials are used in engineering and industry due to their heat transmission qualities. This study examined forced convection flow through an annular tube packed with sphere balls of various materials and sizes using numerical analysis. The sphere balls were permeable. Ceramic, plastic, and steel with spherical diameters of 3, 5, and 6 and porosity of 0.4 were tested for heat dissipated and fluid flow. Also, test the impact of steel balls of diameter 6mm with 0.6 and 0.8 porosity. The numerical simulation results are used to analyze the forced convection and fluid flow parameters of a three-dimensional annular tube with continuous heat flux in the Reynold number range (5000-14000). Steel balls had an 80% higher heat transfer coefficient than annular tubes without porous mediums. The simulation showed that inserting the porous media increased annular tube pressure loss. The maximum heat transfer coefficient improved by about 80% when the spherical diameter is 3 mm. Also, the result illustrated the heat transfer coefficient of steel balls Increased by about 79%, 69%, and 49%, with 0.4, 0.6, and 0.8 respectively

show abstract

“…Numerous investigations have addressed the field of heat exchangers, spanning both numerical [4,5] and experimental [6][7][8] approaches. Several modifications in heat exchanger design, including the utilization of nanofluids [9], highly conductive materials [10], and geometry optimization [11], have been explored to enhance their thermal efficiency. For instance, Karimi et al [12] conducted a numerical simulation study on a double-tube heat exchanger with a twisted tape, examining the impact of alumina/water nanofluid and pure water as working fluids.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on pillow plate heat exchangers: Effects of nanofluid and geometry

Karimi

2023

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

The current research involves a comprehensive numerical simulation of nanofluid flow within a pillow-plate heat exchanger. Al2O3-water nanofluid and water are used as the working fluids, simulated using a two-phase mixture model. The study explores the influence of geometric properties on the heat exchanger’s hydrodynamic and thermal performance. It also delves into the utilization of nanofluids as the working medium and its impact on dimensionless pressure drop, Nusselt numbers, and dimensionless temperature. An innovative aspect of this research lies in the integration of artificial intelligence (AI) techniques for heat exchanger design optimization. Specifically, a Random Forest Regressor (RFR) AI model is employed to predict crucial parameters, including heat transfer coefficient (HTC) and pressure drop, based on input design variables. Key findings reveal that non-linear hole layouts in heat exchangers significantly improve Nusselt numbers by up to 25 percent. Conversely, larger holes result in higher pressure drops. The use of nanofluids enhances thermal efficiency by up to 10% while increasing pressure drop by around 7%.

show abstract

Analysis of functionally graded metal foams for the accomplishment of heat transfer enhancement under partially filled condition in a heat exchanger

Cited by 21 publications

References 44 publications

Thermohydraulic Efficiency of a Solar Air Heater in the Presence of Graded Aluminium Wire Mesh—A Combined Experimental–Numerical Study

Thermohydraulic Efficiency of a Solar Air Heater in the Presence of Graded Aluminium Wire Mesh—A Combined Experimental–Numerical Study

Forced convective rate and pressure drop through a packed annulus: a numerical simulation

Numerical investigation on pillow plate heat exchangers: Effects of nanofluid and geometry

Contact Info

Product

Resources

About