12v Water Pump

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I require a solar cluster and a small dc water pump.

The idea is to use black pipe as a solar heat collector and pump it through a swimming pool driven by the solar powered dc pump.

The object is to raise the water temperature over a period and maintain it at a higher level than normal thus extending the pool usage/ holiday season in Portugal, Algarve.

Could you recommend equipment for test purposes. Doesn’t need much lift –say 2 metres and volume throughput need not be much -say 100 galls/hr

Is that a solar powered water pump or a 12v water pump for a solar heated pool?

Technorati Tags: 12v water pump, Algarve, black pipe, DC, Heat, holiday, pipe, Portugal, Pump, solar powered water pump, swimming pool, temperature, water

*As per your question , you want to run the pump in parallel.
So, you will get double discharge if your piping design is suitable for parallel operation.
Flows Q1 and Q2 combine, and that is what flows through the pipe :
Qpipe = Q1+Q2
*If you want to increase the head pressure , then you have to run the pumps in series.
*You will not give more head pressure if you run in parallel.
*YOU must go through the following links for having clear idea about "pumps in series and pumps in parallel:

http://www.ceet.niu.edu/faculty/kostic/Design-Methods-Ch4-pumps_452/sld011.htm

*Following is a very good link,please visit:

http://www.pumpingmachinery.com/pump_magazine/pump_articles/article_13/article_13.htm

Technorati Tags: 12v water pump, discharge, Flows, Line, parallel operation, pipe, piping design, pressure, water