Asian Phoenix Resources PowerPal MHG-200LH Gebruiks- en onderhoudsaanwijzing - Pagina 6

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To achieve the recommended flow and head it may be necessary to modify your

stream. The next section tells how.

SITE PREPARATION

There are three basic situations that are suitable for installing PowerPal. They are:

1. Waterfall

This is the simplest method. If your house is near a stream with a small waterfall

around 1.5 meters high then you can use this as a platform. Minor modifications to

channel the flow may be required.

2. Dam

If the stream is flat you may need to build a dam. It can be constructed from clay and

river boulders, clay and bamboo (or other wood) or even concrete. The dam wall

should be 1.75 meters high to allow for the head. If there is a waterfall less than 1.5

meters high it may be easy to use this as your dam site to keep the dam small. If, after

constructing the dam the water flow rate is too high then a separate diversion channel

will need to be cut into the dam wall to reduce the flow to the turbine.

Although this is the simplest method it is

also the most affected by changes in

stream flow. Rainstorms or dry periods

may make site modifications necessary.

Dams have both advantages and dis-

advantages. If used in a village setting

they can provide additional uses as a

fish pond and washing area. The dam

wall may support a row of PowerPal

generators so that several families can

have access to electricity. If the village

works together to build the dam the

time and construction costs are lower.

Dams are less likely to be effected by

flooding if diversion channels are

adequate, so PowerPal can be used

effectively during the rainy season.

PowerPal™ Low Head 6