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Farm Building and Infrastructure
Renewable Energy
Small scale solar & building mounted turbine for borehole pump
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<blockquote data-quote="Kentishfarmer" data-source="post: 7208592" data-attributes="member: 28556"><p>Thanks for the responses all useful knowledge I hobbled out to the pumpshed today and got some info off of my power usage recording plug it is using 13.3Kwh/day since July on our current tariff of 18p/unit that's £2.40/day. Which shows me that I cocked up my previous calculation, knowing it was costing about £2/day I multiplied that by 0.18 rather than Divided to get the KWh usage, f**king Idiot! </p><p></p><p>Took another water meter reading and worked out daily consumption over the last 2 years averages at 6.75m3/day. If your interested 6.75m3 X £2.055 (CWs retail & water costs per M3) = (£13.90/day saving - £2.4/day electric) X 365 = Approx £4187/year saving from having a borehole over mains. Just got to reduce the £876/yr electric cost now!</p><p></p><p>I've included the photo of the readings below incase I've interpreted it wrong. The amp reading was 4.5 Then I've got 3 readings W (assuming watts) 630 and then W low is 1.4 W high is 1074? how does this factor into the power = Amps X watts? </p><p>V= 240.6</p><p></p><p>Having looked at the solar power breakdown calculator I think a 3KW system would give me all of the KWh requirements for a good number of months/year, obviously I have to take into account that a portion of the demand is going to be happening at night. I think I'm going to buy an anemometer to measure the wind speed on top of the building to see if a turbine would be worth while to get a portion of the energy from that. </p><p></p><p>One of the big components of the system that I don't really understand will be some sort of power controller that switches the pump from mains or solar/wind. What happens when the renewable is only generating say half the output required to run the pump? Does it then use 50% mains 50% renewable or does it have to switch fully to mains?</p><p></p><p>[ATTACH]917280[/ATTACH][ATTACH=full]917274[/ATTACH][ATTACH=full]917275[/ATTACH][ATTACH=full]917276[/ATTACH][ATTACH=full]917277[/ATTACH][ATTACH=full]917278[/ATTACH][ATTACH=full]917279[/ATTACH][ATTACH=full]917280[/ATTACH]</p></blockquote><p></p>
[QUOTE="Kentishfarmer, post: 7208592, member: 28556"] Thanks for the responses all useful knowledge I hobbled out to the pumpshed today and got some info off of my power usage recording plug it is using 13.3Kwh/day since July on our current tariff of 18p/unit that's £2.40/day. Which shows me that I cocked up my previous calculation, knowing it was costing about £2/day I multiplied that by 0.18 rather than Divided to get the KWh usage, f**king Idiot! Took another water meter reading and worked out daily consumption over the last 2 years averages at 6.75m3/day. If your interested 6.75m3 X £2.055 (CWs retail & water costs per M3) = (£13.90/day saving - £2.4/day electric) X 365 = Approx £4187/year saving from having a borehole over mains. Just got to reduce the £876/yr electric cost now! I've included the photo of the readings below incase I've interpreted it wrong. The amp reading was 4.5 Then I've got 3 readings W (assuming watts) 630 and then W low is 1.4 W high is 1074? how does this factor into the power = Amps X watts? V= 240.6 Having looked at the solar power breakdown calculator I think a 3KW system would give me all of the KWh requirements for a good number of months/year, obviously I have to take into account that a portion of the demand is going to be happening at night. I think I'm going to buy an anemometer to measure the wind speed on top of the building to see if a turbine would be worth while to get a portion of the energy from that. One of the big components of the system that I don't really understand will be some sort of power controller that switches the pump from mains or solar/wind. What happens when the renewable is only generating say half the output required to run the pump? Does it then use 50% mains 50% renewable or does it have to switch fully to mains? [ATTACH]917280[/ATTACH][ATTACH type="full"]917274[/ATTACH][ATTACH type="full"]917275[/ATTACH][ATTACH type="full"]917276[/ATTACH][ATTACH type="full"]917277[/ATTACH][ATTACH type="full"]917278[/ATTACH][ATTACH type="full"]917279[/ATTACH][ATTACH type="full"]917280[/ATTACH] [/QUOTE]
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Small scale solar & building mounted turbine for borehole pump
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