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Turn down ratio is the maximum to minimum heat output.Turn down ratio for direct gas fired burners is 25:1, which means that the burner can modulate from 4% to 100% of full fire. Indirect gas turn down ratio is typically 2:1, which limits the heat output from 50% to 100% of full fire.
Mukesh Yadav
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∙ 12y ago
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What is the ratio of a boiler burner indicates the flexibility of the burner to cope with variations of boiler load without losing efficiency of atomisation?
turndown ratio
What is voltage transformation ratio?
ratio of secondry voltage to primary voltage is called voltage transformation ratio
What is the standard ratio for inventory turnover ratio?
five
What range of values does intrinsic standoff ratio fall into?
The ratio of RB1 to RBBO is the intrinsic standoff ratio. It is the standoff voltage ratio to the power supply voltage.
What is the definition of hot work ratio?
The hot work ratio is the area ratio of the cast diameter and the pre-machined finished diameter.
What is the ratio of a boiler burner indicates the flexibility of the burner to cope with variations of boiler load without losing efficiency of atomisation?
turndown ratio
What is turndown ration?
Turndown ratio refers to the width of the operational range of a device, and is defined as the ratio of the maximum capacity to minimum capacity. For example, a device with a maximum output of 10 units and a minimum output of 2 units has a turndown ratio of 5.
What is turndown capacity?
Its is process term which means the reduced capacity w.r.t. the rated capacity. For example if plant rated capacity is x and turndown capacity is 85% that means 0.85x. And similarly the turndown ratio would be x/0.85x.
What is the function of the barrel of a Bunsen burner?
Control of the ratio gas fuel/air in the burner.
What is the function of the barrel of the Bunsen burner?
Control of the ratio gas fuel/air in the burner.
How can you make a Bunsen burner hotter?
By using the correct ratio of oxygen and fuel mixture. Opening the air hole in the Bunsen burner increase the oxygen which helps the flame burner hotter .
What is turn down ratio of oil fired boilers?
it is ratio of maximum air to minium air
What is the lambda for cole fired boiler?
Labda is defined as the ratio of actul air ti theoritical air.
How hot does LPG gas flame get in a gas burner?
For a common diffusing gas burner use at home, the flame temperature should be in the order of 1800 - 1900 oC. Optimum combustion with air is 1977 oC but that must be at optimum air:fuel ratio.
Why high air flow rates r not allowed in furnaces?
Actually combustion reactions takes place in Furnaces. So when we keep high flow rate then the air to fuel ratio increases which means excess air will be wasted. The compressing of air also takes more energy which will be wasted. If we give excess air flow then we are simply taking away the heat produced to outside the furnace.
What is the advantage of afbc boiler over pf boiler?
afbc has high turn down ratio,burner arrangement is simple,low grade coal can be burnt efficiently,so2 emission can be controlled,
what dose a yellow flame mean on a gas furnace?
Yellow flames from a natural gas furnace indicate that the combustion ratio is off and you have too much excess air in the mixture, if the discolored flame is isolated in the burner meaning on only 1 out of 3 or more then the burner/orifice may be out of alignment or there maybe a crack in the exchangers cell.
