08.3.1 Hidroenergia 2008 – Bled/Slovenia

The Gran-olo sula Project:

MHP implementation in the Hinterland of Surinam

by

Dr. Eduard DOUJAK

and

Dr. Sieuwnath NAIPAL

08.3.2 Main Objective

Design, construct and implement locally a

Micro Hydropower Plant for the conditions of

Suriname aiming to provide electricity on a

sustainable way

08.3.3 General overview and background

Annual average rainfall

N-E Trade winds Dec - Jan

S-E Trade winds April – August

08.3.4 Location of the project

• District Sipaliwini

• Lower Tapanahony river

• Study area encompasses about 13 villages

with Drietabbetje as main of the local

government.

• The villages are found within a radius of

about 7-8 km from the Energy source (MHP

site).

08.3.5 One way to access the Hinterland

Site at the

Tapanahony river

08.3.6 Infrastructure

• Two airstrips: (1) at Puketi, and (2) at

Drietabbetje. Flight duration Paramaribo-

Dritabbetje 50-60 min.

• A railway at Futupasie for facilitating

transport of goods.

• Duration water transport from Albina to

Dritabbetje ±2days

• Some of the villages are not foreseen with

electricity

• Telephone connection with Paramaribo

08.3.7 Aerial view

09 feb 2008

08.3.8 Electricity provisions

• Some of the villages are for seen with

electricity (by diesel generators)

• Electricity generation only between

18:00 – 11:00 our.

• Is being subsidized by the central

Government (Paramaribo, about 10

barrel diesel per “village”).

08.3.9 Sectors in need of electricity

• Health care

• Lightning during the nocturnal hours

• Schools and other public places

• Private persons for conserving of food

• Tourism (industries)

• Sawmill units

• In the near future Telecom and Television

08.3.10 Aerial view of the Gran-olo sula (2005)

Potential location

08.3.11 Gran-olo sula

213

45

08.3.12 Electricity distribution

Name village Electricity need (kW)

Kisai 25

Pikien kondre 15

Pikienprisiri 15

Sanbidoemi 15

Luabi 20

Prolokaba 10

Pipa-kondre 10

Dritabiki 60

Mainsi 15

Jawsa 25

Moitaki 25

Puketi 20

Sangamasoesa 15

Sum 245

08.3.13 Hydrological features of the river

• Serious fluctuations of water levels observed. In

general 4-6m, with an average fluctuation of

about 4m.

• Minimum head 2m.

• Maximum head 6m

• Design head 3m

• Estimated minimum discharge at the

surroundings of the site - 15 m3/s

• Estimated maximum discharge >50 m3/s

08.3.14 Hydrological data (waterlevel)

08.3.15 Flow duration curve

Flow duration / head of a year

0

30

60

90

120

150

180

210

240

270

0 30 60 90 120 150 180 210 240 270 300 330 360

days

Dis

ch

arg

e [

m³/

s]

0

1

2

3

4

5

6

7

8

9

He

ad

[m

]

Mean Flow

Mean Head

La

yo

ut

po

int

08.3.16 Turbine layout parameters

Layout parameters

Rated discharge 5 m³/s per turbine

Design head 3 m

Site elevation 100 m

Water temperature 20°

System frequency 60 Hz

08.3.17 Main turbine design parameters

1min14.25714

606060

p

fnsSynchronous speed:

1

75.075.0min24.252

3

514.257

H

QnnqSpecific speed:

“A hydraulic machine works cavitation free if the specific energy

of the plant YHA is higher than the specific energy of the

machine YH.”

mhs 85.665.581.9

67.429.30

81.92

5.0

81.93.998

2337129100 2

Turbine suction head:

"" operationfreecavitationYY HHACavitation criterion:

mDmn

HkD u 1083.1

14.257

39.16.846.84 1

11Runner diameter:

mDDD

Dn

n 4.04.04.0 1

1

Hub diameter:

kWHQgP 2.1329.03581.93.998Power output:

08.3.18 Turbine design process

Main data

„Kaplan“ software

Runner layout data

Design by using

“SolidEdge” software

Runner geometry

Input: nq,Q,H,YHA,

D1, Dn, …

08.3.19

View inlet and turbine 2D cross-section view

Total power house view 3D cross-section view

Power house layout

08.3.20

02/2008

11/2007 11/200710/2007

11/200712/200702/2008

Some impression from the construction site

10/2007

Water diversion works

11/2007

Water inlet adjustmentThree water inlets for the turbines

11/2007

Food preparation at the construction site

11/2007

Turbine outlets, construction impression

12/2007

Construction of the power house

02/2008

The power house at the moment (H~3m, Q -> enough)

02/2008

08.3.21 Possible situations (flooding 2006)

Flooding in may 2006; destroyed all the infrastructure: as seen from

the hydrograph, suitable period for construction is October

November

08.3.22 Final

VIENNA UNIVERSITY OF TECHNOLOGY

Institute for Thermodynamics and Energy Conversion

RG Fluid-Flow Machinery

Getreidemarkt 9/302

A-1060 Vienna/AUSTRIA

Tel.: +43/1/58801-30515 , FAX: +43/1/58801-31399

Email: eduard.doujak@tuwien.ac.at

Thank for your attention!

ANTON DE KOM UNIVERSITY OF SURINAME

Leysweg, POB 9212,

Paramaribo, Suriname

Phone 597 8715714 , FAX 597 495005

Email: s.naipal@uvs.edu