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Stick This in Your Pipe

Stick This in Your Pipe. Information Found at the Following Website. http://microhydropower.net/index.php. Pipe can be a Considerable Cost up to 40%. Factors to Consider. surface roughness, design pressure, method of jointing, weight and ease of installation,

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Stick This in Your Pipe

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  1. Stick This in Your Pipe

  2. Information Found at the Following Website • http://microhydropower.net/index.php

  3. Pipe can be a Considerable Costup to 40%

  4. Factors to Consider • surface roughness, • design pressure, • method of jointing, • weight and ease of installation, • accessibility of the site, • terrain, • soil type, • design life and maintenance, • weather conditions, • availability, • relative cost, • likelihood of structural damage.

  5. Considerations • Pipes are generally supplied in standard lengths and have to be joined together on site. • Penstock pipelines can either be surface mounted or buried underground. The decision will depend on the pipe material, the nature of the terrain and environmental considerations.

  6. Burying Pipe • Burying a pipe line removes the biggest eyesore of a hydro scheme and greatly reduces its visual impact. However, it is vital to ensure a buried penstock is properly and meticulously installed because any subsequent problems such as leaks are much harder to detect and rectify.

  7. Types of Pipes • The following materials can be considered for use as penstock pipes in micro hydro schemes: • mild steel, • unplastified polyvinyl chloride (uPVC), • high density polyethylene (HDPE), • spun ductile iron, • asbestos cement, • prestressed concrete, • wood stave, • glass reinforced plastic (GRP). • PVC and HDPE are the most common used materials.

  8. Pipe loss charts modified from Scott Suddreth’s Hydro Matrix Excel sheet

  9. Lets do some examples: • Turtle Island • 140 ft head • 4” HDPE (High Density Poly Ethylene) • Ok lets do 3” since it is on the chart. • What is the best size of PVC pipe to use for 100 gpm with 100’ head? Keep loss below 5%. • How about 30 ft head?

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