Pump questions

[sherry]

hi - can anyone advise me on how to figure out what size pump would be needed to pull water out of a pool and up about 10 feet and thru a coil heater like this? I don't want to use the pool filter pump because it uses 1600 watts and would costs $1 for 5 hours of operation and I don't need to run it more than an hour a day for filtration. So I want to use a small pump (50 to 100 watts) I have found some self priming aquarium pumps that say they will pump to 13 to 16ft high but I am unsure how to figure whether there will be a friction loss problem pumping through several hundred feet of pipe. I notice that you connected the coils in series, here is a link for a similar system that connected them in parallel -

http://rimstar.org/renewnrg/solar_pool_heater_diy_fp.htm

would that make the water flow thru more easily? Does anyone know how to figure this out? thanks. sherry


[QUOTE=Mike-Mat;5325]Thought you might find this interesting.

So I have 4 coils containing about 120' (each) of PVC irrigation hose, connected in series. The black PVC is mounted on a black board. Water is pumped out and thru the coils.

Preliminary Test:
Water going in is 57

[russ]

@ Sherry,

Here is the URL for a pressure drop calculator for straight runs of plastic pipe (PE) won't be much different from whatever type you buy.

http://www.engineeringtoolbox.com/pe-pipe-pressure-loss-d_619.html

Here is another to convert fittings into the equivalent straight lengths of pipe.

http://www.engineeringtoolbox.com/pvc-pipes-equivalent-length-fittings-d_801.html

You need to know the total length in the coils plus the number of each type of fitting such as 90