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Green Renewable Energy Forum
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Managing and using your generated power - a whacky idea?
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<blockquote data-quote="ProDave" data-source="post: 260285" data-attributes="member: 6969"><p>Well my solar PV dump seems to be ticking along nicely.</p><p></p><p>265 minutes dump time seems to be my limit, which equates with my 700W heater to be about 3KWh of electricity "saved" from being exported. There's not enough power before about 10:30AM to trigger the dump load to come on, then after 5PM the same, not enough power as the sun's getting too far round.</p><p></p><p>So that's a "window" of about 390 minutes when the dump load could come on if nothing else was using power, so considering most days there's a dishwasher load and a washing machine load (and often that pesky tumble dryer) I think it's doing okay.</p><p></p><p>And the holy grail was achieved today, the immersion heater reached temperature and cut off BEFORE we ran out of sun, and at 5PM when the boiler time clock turned on, the boiler didn't fire up as the tank was up to temperature already.</p><p></p><p>I'm just working now on some data logging to record the On time each day. the on board eeprom should be able to store 500 days worth of data before rolling over and over writing previous data.</p><p></p><p>Am I allowed to mention it's been warm and sunny here for a few days? I hear some of you are getting a bit wet.</p></blockquote><p></p>
[QUOTE="ProDave, post: 260285, member: 6969"] Well my solar PV dump seems to be ticking along nicely. 265 minutes dump time seems to be my limit, which equates with my 700W heater to be about 3KWh of electricity "saved" from being exported. There's not enough power before about 10:30AM to trigger the dump load to come on, then after 5PM the same, not enough power as the sun's getting too far round. So that's a "window" of about 390 minutes when the dump load could come on if nothing else was using power, so considering most days there's a dishwasher load and a washing machine load (and often that pesky tumble dryer) I think it's doing okay. And the holy grail was achieved today, the immersion heater reached temperature and cut off BEFORE we ran out of sun, and at 5PM when the boiler time clock turned on, the boiler didn't fire up as the tank was up to temperature already. I'm just working now on some data logging to record the On time each day. the on board eeprom should be able to store 500 days worth of data before rolling over and over writing previous data. Am I allowed to mention it's been warm and sunny here for a few days? I hear some of you are getting a bit wet. [/QUOTE]
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Managing and using your generated power - a whacky idea?
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