A new relation for pressure drop through ceramic foams based on dimensional analysis

Shakiba, S. Akbar; Ebrahimi, Reza; Shams, Mehrzad

doi:10.1117/12.851647

Cited by 1 publication

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“…This shows that the effect of coating on the resistance is not very significant under low mass flow rate. Similar findings were reported by Shakiba et al [21] for low velocities in both experimental and numerical simulation results for porous Al 2 O 3 and SiC. Fig.…”

Section: Characteristics Of Coated Porous Mediasupporting

confidence: 93%

Effect of ceramic coating in combustion and cogeneration performance of Al 2 O 3 porous medium

Ismail

Abdullah

Zubair

et al. 2016

Journal of the Energy Institute

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a b s t r a c tIn this work, the effect of SiC-, Ni-, and Cr-based coating on the performance of porous medium burner are evaluated. A dip-coating technique was used to coat SiC, Ni, and Cr powders on a pre-sintered porous Al 2 O 3 substrate. The morphological properties of the sintered Al 2 O 3 plain substrates and coating layer were observed using a light microscope and scanning electron microscopy. The combustion analyzer has been calibrated and used to measure the emissions during the experiment. Thermoelectric cells were used in the cogeneration system to generate electricity from the porous medium burner. The results show a significant improvement in the maximum surface flame temperature and combustion emissions over the plain substrate. The highest recorded surface flame temperature at flow rate of 0.25 L/min was 750 C for SiC-coated, 741 C for Cr-coated, 739 C for Ni-coated and plain substrate registered a temperature of only 634 C. An 18% increase in flame temperature was recorded for SiC-coated substrate when compared to the plain substrate. Moreover, the coated substrate reduced the emissions CO, CO u and NO x . It was also found that; SiC-coated substrate reported the best overall power output when compared to the plain substrate.

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Section: Characteristics Of Coated Porous Mediasupporting

confidence: 93%