RUKTI II SHEP (5.00 MW)

DESIGN OF STEEL PIPE FOR TAIL RACE( TAIL RACE HAS BEEN DESIGNED AS INDIVIDUAL STEE PIPE AND A COMMON CHANNEL)Design criteriaIt is proposed to provide steel conduit as the water conductor system

References

Code of practice for open power channel IS-7916Code of practice for design of c/s of lined channels IS-4745Design parameters

Design discharge for power generation = 1.10Add 20 % for excess drawl = 0.22Design discharge for power conduit = 1.32Slope of pipe = '1:250

Let d be the diameter of pipe to pass the design dischargethrough the power conduitTaking diameter of pipe as diameter 1.45 meters

Area = 3.142*d^2/43.142 *d

Hydraulic radius = d/4Velocity of flow = V = 1/n*r^2/3* s ^1/2Value of n= 0.011 S = 250

By trial and error method

Diameter of pipe = 0.84 m

Velocity of water = 2.51 m/sec

SECTION OF POWER CONDUIT ADOPTED

Irrigation and hydraulic structures by S.K.GargTheory and design of hydraulic structures(vol-ii) by R.S.Varshney,S.C.Gupta andR.L.Gupta

cumecscumecscumecs

Wetted perimeter =

Use 1 M Dia Pipes for individual unit and a common Channel

1000 mm

RUKTI II SHEP (5.00 MW)

DESIGN OF COMMON TAIL RACE CHANNEL

Design criteriaTail race channel shall be designed as rectangular RCC Channel

References

Code of practice for open power channel IS-7916Code of practice for design of c/s of lined channels IS-4745Design parameters

Design discharge for power generation = 2.200Add 20 % for excess drawl = 0.44Design discharge for power channel/tunnel = 2.64Slope of power channel = 0.00400

Let d be the minimum depth of water to pass the design dischargethrough the rectangular channel.Taking width of channel as Width = b 2.4 meters

Area = b *d 0.5*db + 2 d 0.5+2d

Hydraulic radius = (b *d/(b+2*d))^2/3Velocity of flow = V = 1/n*r^2/3* s ^1/2Value of n= 0.015 S = 250

Q/b*d = 1//0.014*(3*d/3+2*d)^2/3*(1/750)^1/2By trial and error method ,depth of water

0.625/0.5*d = 1/0.014*(0.5*d*(0.5+2*d)^2/3*(1/750)^1/2)Width of channel = 2.40 mDepth of water in the channel = 0.60 mVelocity of water = 2.13 m/sec

1.1m

2.4m

SECTION ADOPTED 2.4 m X 1.2 M RCC Channel

Irrigation and hydraulic structures by S.K.GargTheory and design of hydraulic structures(vol-ii) by R.S.Varshney,S.C.Gupta andR.L.Gupta

cumecscumecscumecs

Wetted perimeter =