Yeah, chances are good that all of these types of water pumps are going to be expensive, in my opinion, thats why I threw in that alternative of using a hand operated water pump. Its not any cheaper but it, I think, gives you all more options for the future.
If we work with the figure of 480 gallons of water per day and assume that each stroke supplies 1 pint of water per 2 seconds that comes to 225 gallons per hour or 3.75 gallons per minute.
If you take a look at that website I gave you a link too again you should see that their claim is to 3 gallons of water per minute. So it would take about 2.5 hours of pumping by hand to fulfill the 480 gallons desired. Considering that all pipes are full to begin with.
http://www.solar4power.com/solar-power-motorized-water-pump.htmlIt also gives you the option of changing over at a later time to solar power. There are links within their website the can help you determine the best application for your site should you consider it.
Its not as hard as you might think to pump that much water by hand. It helps if one is ambidextrous. In this particular case thats not a hard "skill to acquire. As it turns out, necessary.
To be sure there is several people in this, uh, village? that would not mind a "workout" of this nature. They could take turns. Something I wished I had when I was filling 6 - 55 gallon drums with a pitcher pump. There is no doubt that this is a mundane task but so is an 8 hour day 5 days a week job, yet billions of people do it world wide there entire adult life. Many of them have to sit on there butts the whole time. Tradgic if you ask me. Somehow, I don't think thats what God intented for the human physique.
As for the 4.5 hours a day of peak sun hours. That may be the same as what I call the "number of hours of equivalent full rated power from a PV module." Mr. Winters explained this in his post. LCB's (Liner Current Boosters) help to "stretch out" that 4.5 hour solar day when a PV direct pumping system is set up.
One other plus for that hand pump is it can be done at night as well, when its little cooler outside.