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two types of draft tube
1. conical type-> for low powered units
2. elbow type-> used with most turbine installation
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∙ 12y ago
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What will happen if a uniform cross section draft tube is used instead of a conical draft tube?
In a Reaction turbine,the Draft Tube is used to reduce the exit velocity loss in order to minimize the exit energy loss. The conical Draft tube ensures this as the diverging area ensures a lower velocity at draft tube exit (since acc. to Q = VxA; the continuity principle,an increase in area renders a decrease in velocity) than its entry point ( at runner exit). A straight (uniform c/s draft tube) draft tube will impart no reduction in the magnitude of exit velocity and thus the employment of a draft tube at the runner exit will be futile.
What is used To allow pressurized gases To To vent from the crankcase?
Draft tube or pcv system.Draft tube or pcv system.
What turbine does not require draft tube?
Draft tube is used to increase the pressure from the low turbine exit pressure to the pressure of the surrounding to which the fluid is rejected.Only reaction turbines require a draft tube as there is low pressure at the exit of the turbine,where as in an impulse turbine the pressure at the inlet and the exit is essentially the same, which is above the pressure to which the fluid is rejected and thus it require no draft tube.
What is exposure draft the types uses and correct application?
the meaning of exposure draft, types, uses and application
Why forebay is used in hydroelectric power plant?
draft tube
What are two types of auto carburetor?
Down draft and side draft
What is draft tube in hydro electric power plant?
This is a water conducting system part which provide the path for out let water of turbine that is called draft tube. Er.C.R.Meena Assistant Director (Tech.)
What draft tube in hydro electric power plant?
This is a water conducting system part which provide the path for out let water of turbine that is called draft tube. Er.C.R.Meena Assistant Director (Tech.)
What is the different types of chest tube thoracotomy?
guide wire tube thoracostomytrocar tube thoracostomyoperative tube thoracostomy
Why draft tube is used in francis and kaplan turbine and not in pelton turbine?
The Kaplan turbine is a newer, more revolutionary version of the Francis turbine, which came before it. The draft tube is used so that the turbine does not need to be where the water flow is lowest.
What are the types of shire horses?
The Shire is a draft breed.
What is the purpose of draft tube in hydraulic turbines?
Draft tube has following purpose :- 1. It makes possible the installation of the turbine above the tail race level without the loss of head. 2. the velocity of water at the runner outlet is very high. By employing a draft tube of increasing cross sectional area, the discharge takes place at a much lower velocity and thus, a part of the kinetic energy that was going as a waste is recovered as a gain in the pressure head, and this increases the efficiency of the turbine. 3.The draft tube prevents the splashing of water coming out of the runner and guides the water to the tail race.
