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Energy efficiency study of household gas burner using pot-bottom shield and modified pot arrangement

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dc.contributor.advisor Rahman, Dr. Md. Mominur
dc.contributor.author Ashfarul Islam
dc.date.accessioned 2020-03-10T06:27:39Z
dc.date.available 2020-03-10T06:27:39Z
dc.date.issued 2019-03-25
dc.identifier.uri http://lib.buet.ac.bd:8080/xmlui/handle/123456789/5473
dc.description.abstract The main objectives of this study were to design, develop and evaluate practically applicable pot-bottom shield and finned-pot in different pot-shield arrangements for better thermal and emission performances of a conventional household radial flow NG burner. Therefore, eleven sets of perforated hollow cylindrical pot-bottom shields having different height were fabricated from thin metal sheet with a provision of secondary combustion air. These were built in such a way that each of the pot-bottom shields maintains a flue gas exit channel of 4 mm height between the pot-bottom and pot-support. One of the two identical flat bottom pots was converted to spot welded finned pot. The thermal and emission performances of the NG burner were then evaluated following the standard water boiling test (WBT) protocol with four different pot arrangements, namely ordinary flat bottom pot without shield and with shield and spot welded finned pot without shield and with shield at eleven different loading heights (from 2.5 cm to 7.5 cm with an increment of 0.5 cm) and six different NG supply pressures (4, 6, 10, 14, 18 and 20 mbar)keeping the burner primary air opening fixed at 50%.It was found that a simple inclusion of a pot-bottom shield can dramatically improve the thermal efficiency of a natural gas cooking system for the both type of pots though pot bottom shield increases CO emissions. A 20% improved thermal efficiency was evaluated for the NG burner with ordinary pot and pot-bottom shield arrangement at 6 mbar pressure and 3 cm loading height corresponded to the highest efficiency of the burner at base setting (burner with ordinary pot at 6 mbar NG pressure and 4 cm loading height). It was also found that the operation of the burner at its highest thermal efficiency was still within the safe operation limit in terms of CO emission in comparison to international standards. en_US
dc.language.iso en en_US
dc.publisher Department of Chemical Engineering , BUET en_US
dc.subject Natural gas -- Bangladesh en_US
dc.title Energy efficiency study of household gas burner using pot-bottom shield and modified pot arrangement en_US
dc.type Thesis-MSc en_US
dc.contributor.id 040502007 F en_US
dc.identifier.accessionNumber 117194
dc.contributor.callno 665.7095492/ASH/2019 en_US

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