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Difference between revisions of "Solar Powered Water Systems in Humanitarian Context - Q&A"
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| + | This page documents the questions that were asked during the webinar: [[Capacity_Building_and_Learning_on_Solar_Powered_Water_Systems#Webinar_I|Solar Powered Water Systems in Humanitarian Context]]<br/> | ||
| + | <span style="color:#B22222"><u>''''''Please note that this page is a work in progress and will be updated with all the questions asked during the webinar''''''</u></span><br/> | ||
== Contact Information of Lorentz and Grundfos == | == Contact Information of Lorentz and Grundfos == | ||
| − | *https://www.lorentz.de/partners/ | + | |
| − | *https://www.grundfos.com/za/where-to-buy | + | *[https://www.lorentz.de/partners/ https://www.lorentz.de/partners/] |
| + | *[https://www.grundfos.com/za/where-to-buy https://www.grundfos.com/za/where-to-buy] | ||
== Q1. How can we install solar-powered pumps to replace an existing hand pump installed borehole in a rural context? == | == Q1. How can we install solar-powered pumps to replace an existing hand pump installed borehole in a rural context? == | ||
| + | |||
this is technically possible, depending on the parameters of your system. Typically the borehole diameter (normally 3 inches or less) is a limiting factor for replacing handpumps with solar pumps...If your borehole diameter is a bit bigger (4 or more inches) this can be done without a problem). | this is technically possible, depending on the parameters of your system. Typically the borehole diameter (normally 3 inches or less) is a limiting factor for replacing handpumps with solar pumps...If your borehole diameter is a bit bigger (4 or more inches) this can be done without a problem). | ||
== Q2. Which solar pumps are best for different depths ? surface pumps and submersibles == | == Q2. Which solar pumps are best for different depths ? surface pumps and submersibles == | ||
| + | |||
you can literally solarize any electrical submersible pump and many surface pumps, like the ones used with diesel generators or connected to the grid....so the way to size your water pump for your borehole is similar to the way if using other power sources. | you can literally solarize any electrical submersible pump and many surface pumps, like the ones used with diesel generators or connected to the grid....so the way to size your water pump for your borehole is similar to the way if using other power sources. | ||
| − | == Q3. What about the use of Batteries?== | + | == Q3. What about the use of Batteries? == |
| + | |||
It is technically feasible but they are costly, might need maintenance and introduce high inefficiencies...it is normally a better option to oversize your solar panel array, since the cost of panels is low, and store water in an elevated water tank, which is a way to store energy, so that water can be made available at any time by gravity. | It is technically feasible but they are costly, might need maintenance and introduce high inefficiencies...it is normally a better option to oversize your solar panel array, since the cost of panels is low, and store water in an elevated water tank, which is a way to store energy, so that water can be made available at any time by gravity. | ||
| − | === Q4. How do we address the high initial capital costs of solar water supply systems? == | + | == = Q4. How do we address the high initial capital costs of solar water supply systems? == |
There are various means of financing, similar to when you use other power source... depending on the size of your system, solar pumping options might not be that initially costly as you may think, as prices of panels have dropped by 80% in the last 10 years. Having said this, what really helps in financing is to look at the cost over the lifetime of the equipment, which almost always brings to light the savings incurred over time when using solar pumping. We will talk about this in-depth during [[Capacity Building and Learning on Solar Powered Water Systems|Webinar 2 in January]]. | There are various means of financing, similar to when you use other power source... depending on the size of your system, solar pumping options might not be that initially costly as you may think, as prices of panels have dropped by 80% in the last 10 years. Having said this, what really helps in financing is to look at the cost over the lifetime of the equipment, which almost always brings to light the savings incurred over time when using solar pumping. We will talk about this in-depth during [[Capacity Building and Learning on Solar Powered Water Systems|Webinar 2 in January]]. | ||
Revision as of 07:23, 26 November 2020
This page documents the questions that were asked during the webinar: Solar Powered Water Systems in Humanitarian Context
'Please note that this page is a work in progress and will be updated with all the questions asked during the webinar'
Contact Information of Lorentz and Grundfos
Q1. How can we install solar-powered pumps to replace an existing hand pump installed borehole in a rural context?
this is technically possible, depending on the parameters of your system. Typically the borehole diameter (normally 3 inches or less) is a limiting factor for replacing handpumps with solar pumps...If your borehole diameter is a bit bigger (4 or more inches) this can be done without a problem).
Q2. Which solar pumps are best for different depths ? surface pumps and submersibles
you can literally solarize any electrical submersible pump and many surface pumps, like the ones used with diesel generators or connected to the grid....so the way to size your water pump for your borehole is similar to the way if using other power sources.
Q3. What about the use of Batteries?
It is technically feasible but they are costly, might need maintenance and introduce high inefficiencies...it is normally a better option to oversize your solar panel array, since the cost of panels is low, and store water in an elevated water tank, which is a way to store energy, so that water can be made available at any time by gravity.
= Q4. How do we address the high initial capital costs of solar water supply systems?
There are various means of financing, similar to when you use other power source... depending on the size of your system, solar pumping options might not be that initially costly as you may think, as prices of panels have dropped by 80% in the last 10 years. Having said this, what really helps in financing is to look at the cost over the lifetime of the equipment, which almost always brings to light the savings incurred over time when using solar pumping. We will talk about this in-depth during Webinar 2 in January.
