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Nairaland Forum / GeorgeD1's Profile / GeorgeD1's Posts
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Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 3:51pm On May 31, 2018 |
mcTrinity: it's about 60 amps shore max but you can throttle it to whatever current you want using the magnum remote. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 11:07pm On May 24, 2018 |
NiyiOmoIyunade: niyi, reading through your post i couldn't help but shake my head in disgust when i place my horrible experience with protek energy side by side your sweet experience with morningstar. after making me climb up and down my hot water tank for several days in a row they had to wash their hands off the same warranty they used to peddle their product. interestingly i notice they now mostly advertise inverters, cc and solar panels these days. no more mention of solar water heaters. but peeps should not be deceived. if they could shy away from honouring their warranty on solar water heaters claiming flimsily that they were not the ones that did the installation, they could as well do so for inverters and panels whenever issues arise. all they need to do is claim that the customer installed their inverters wrongly and hence not their fault. end of warranty, end of story! 1 Like |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 12:30pm On May 21, 2018 |
niyi, that's one of the things they claimed happened. at a point after installation i decided to remove the assistant tank and connected the cold water inlet directly to the tank. i did that because i noticed it always took like forever to fill up whenever i drain the tank for whatever reason. but after the leaks started and i called them to complain, they advised that I should put back the assistant tank saying that the main water tank pressure was likely one cause of the leakage. well, I re-installed the assistant tank and noticed a slight improvement but that was it - the leakage was still there. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 8:07pm On May 20, 2018 |
tholuxanny: check your watsapp bro |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 8:00pm On May 20, 2018 |
Juokorow: yeah i was able to reduce the leaks to manageable levels using the silicone but would still prefer a complete replacement of the hot water tank if i had a choice. i can't really think of any alternative right now but you can browse konga or jumia for options. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 11:36am On May 18, 2018 |
babaegun, now you can see why the spambot was working overtime to ensure that i don't get the message out. so strange you would think seun and protek are working in league! anyway, things do happen but good enough i was able to get the review out hook and crook! 4 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 5:09pm On May 17, 2018 |
pix as referred:
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Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 4:58pm On May 17, 2018 |
all, after getting banned severally for the past couple of days i have finally decided to go the attachment route. let's see if the botman can read attached files too so, finally there you have it.
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Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 4:54pm On May 17, 2018 |
Juokorow: yeah, so the spambot thinks it can frustrate me. hehehe, it got something else coming! |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 2:12pm On May 16, 2018 |
solar water heater review continued. the botman banned me again yesterday the good over one year free hot water without electricity so far. although there is an optional electric heating element installed, i have never had any need to use it - yet. the bad a few months post commissioning, i started noticing small leakages coming from the water heater. so i climbed the tower to investigate the source only to discover that the leakage was coming from the inlet to the assistant tank (the small tank on top - check the picture). i called my plumber and after deliberating on possible solutions, we decided to apply silicon to the leaking connection. that seemed to solve the problem until the leakage re-appeared a few days later but this time it was from the right end cover. on seeing this, i was perplexed and decided to escalate this to the supplier - protek power and energy ltd. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 1:50pm On May 15, 2018 |
i will now continue with my review from where i stopped yesterday. hopefully, this around, botman will allow the posts to stay - with a few tweaks to the wordings and removal of more special characters. sigh. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 1:42pm On May 15, 2018 |
Barezzi: lolz. yeah i guess the spam bot had to do it's thing yet again, and that while i was still speaking. humph. it's seun's call really. he can choose to continue keeping his bot settings on paranoid mode while restricting flow of information and stagnating growth or do the right thing by loosening things up. ever since the attack on nl a few years ago that brought his site down a for a few days, the bot man has been on overdrive deleting posts and banning members for the flimsiest of reasons. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 1:23pm On May 14, 2018 |
all, recall that i installed my solar water heater over a year ago and i've been using same effectively since march 2017. i will now proceed to do a mini review of my experience: the good, the bad and the downright shameful: nameplate specs product name - protek (white label) type - non pressurized integrated solar water heater capacity - 300l installation the installation presented a series of challenges when i had to decide on either a roof mounted structure or erecting a separate water tower for the water heater. at the end i settled for the later partly because of the weight and also ease of access for future maintenance issues. so, after the decision was made, the rest was easy. retrofitting the existing bathrooms, toilets and kitchen with new copper tubing was a breeze and my plumber was up to the task. then came the commissioning part. coming from a background of electrical mains heated water heaters with the likes of ariston, this was a new experience for me. i remember my first bath with a solar heated hot water, it's a feeling out of this world. max temp recorded from march to somewhere around june (before the onset of everyday rains) was around 77 degrees celcius while the lowest was about 32 degrees celcius between july and september (when the everyday rains set in). |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 1:16pm On May 14, 2018 |
abunafiu2: i tried uploading this review severally over the weekend but the spam bot keeps deleting my post and banning me for 24 hrs. strange because i don't see anything that remotely resembles spamming in my post. i know the bot has a loathing for special characters and i tried to minimize using those after the first ban but it still had to do it's thing again the second time. i will try again to upload the review. if it gets deleted again i might resort to posting a scanned copy. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 11:50am On May 10, 2018 |
abunafiu2: prof, sorry i've been occupied with work. as this is highly overdue i will now go ahead and give my review. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 12:16pm On Apr 26, 2018 |
NiyiOmoIyunade: niyi, in my own particular case, i've never really had the need to incorporate external cooling with my tristar mppt cc. warm to the touch, yes. burning my hands, no. but maybe i've been particularly lucky or maybe i've always had the good fortune of installing in airy environments. going forward i hope to pay closer attention to my heatsink temperatures but in hindsight i can't recall seeing anything above 50 celcius even at max amps throughput. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 9:50am On Apr 25, 2018 |
NiyiOmoIyunade: niyi, an external fan for the morningstar? that's certainly food for thought. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 7:57pm On Apr 19, 2018 |
all, its been more than a year now since I started using my solar water heater. in the next couple of days I will be doing a review of the journey so far. a few surprises and a lot of flaks too. it has been anything but a dull experience. 1 Like |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 8:35pm On Apr 18, 2018 |
davodyguy: davodyguy, lolz! these are throw back pix of the early years in my journey to energy freedom. ah! the joys of the internet, a place where memories never die! for starters, that pwm cc in the first picture served its time well without issues. after being in the cooler for a couple of years, it is now producing much needed juice for a reputable medical doctor in benin. the 5kva prostar inverter in the second picture blew up without warning one fateful morning after working all night. i had earlier shut down it down to cool off in the morning and when i went back a few hours later to put it on i heard a loud bang and that was the end. the local dealer whom i bought it from wasn't too excited when i took it back to him for repairs, citing lack of available spares, support, etc. well, that shouldn't have come to me as a surprise - afterall, what do you expect from a chinese made mid-range product? ok, the batteries were zenith 200ah and lasted about 5yrs give and take. i was so impressed with their performance that i decided to replace them with their 260ah senior cousins which i'm using till date. as for the 5kva binatone stabilizer, i guess it just couldn't cope with the huge power draw from both the inverter and house loads that it caved in and went into early retirement... i could go on but that would mean writing a whole book on my long journey into renewables... |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 2:48pm On Apr 16, 2018 |
Barezzi: barezzi, thanks for the links. believe me, i read every one of them. the first link dwelt more on comparing starter batteries to lithium. at a capacity of 1:3 that may be understandable. however, the victron write-up spoke more to my practical scenario of agm vs lithium and seems to make more sense. interestingly, i see that the writer also came up with a price point difference of 3.48 times the price of agm even at 80% dod (lithium) vs 50% dod (la). verdict: from a cost perspective, lead acid (la) still carries the day. 2 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 12:00pm On Apr 16, 2018 |
bigrovar: bigrovar, it's really the big energy conundrum playing out all over again. i definitely think the future belongs to some other storage medium besides lead-acid. but whether lithium is the answer is what i've been trying to convince myself about. unfortunately, all the replies gotten so far fall short of that basic answer. emotions? yes. sentiments? yes. hard facts backed by sound financial analysis? zilch! 2 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 11:50am On Apr 16, 2018 |
Barezzi: barezzi, this is getting quite interesting, isn't it? if 300ah for lead-acid equals 100ah for lithium it then means we have to ultimately change the way we calculate our power fundamentals, i.e p=iv. unfortunately i'm yet to see any documentation in support of this. i'd be happy if you could give any references. at least that would be a good starting point. 1 Like |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 11:43am On Apr 16, 2018 |
NiyiOmoIyunade: niyi, you echoed my thoughts exactly. i like to think of myself as a very practical person (maybe it has a lot to do with my kind of profession), so i work with hard facts and not just theories. my analysis for battery bank sizing had a typical scenario for 50% dod which you aptly stated in your comments. well done. 2 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 3:12pm On Apr 15, 2018 |
hello niyi, pranil, chris81964, dmerciful, et al, so i've been doing some thinking around this whole lithium battery thing and i'm still struggling to see how present day costs justify the whole excitement it seems to be generating. take a typical scenario: a 3.5kwh 48v simpliphi power lithium ferro phosphate (lfp) battery costs about 1,550,000 naira on a popular solar website (names withheld). using our usual piv power calculation, this translates to 72.9ah at 48v. if i want to make up a bank of 780ah like i have presently, i will need about 10 units of this lithium battery making 72.9ah x 10 or 729ah at 48v or 35kwh. this will set me back a whopping 15.5million naira! even if i decide to do the smart thing and aim for 100% dod, i can only reduce this cost by half but that will still be unacceptable at 7.25million just for batteries. now flip this around and lets do the maths for traditional lead-acid agm batteries. again, i want to build a bank of 780ah batteries and i decide to visit yet another popular solar website. i get trojan solar agm battery 12v 205ah for about 185k each. i would need at least 16 units to reach my bank size goal. adding up at 48v this translates to a total 820ah. which is 39.360kwh (playing up the lithium trick) and at a cost of 2.96million. at a glance this is less than one-fifth of the cost for lithium with a significantly higher storage. from a purely economic view point, it wouldn't make sense for me to ditch traditional lead-acid in favour of lithium when i can get more for less. besides the phantom dod cycles, its lighter weight plus the fact that you can bypass the usual bulk-absorb-float stages, what other features does lithium has going in its favor to justify such humongous investment? 5 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 10:52am On Apr 13, 2018 |
abunafiu, prof, true talk. and not only batteries but cuts across the whole array of solar accessories including charge controllers, inverters and panels. inferior products will kill any industry faster than ebola kills its victims. 3 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 11:54am On Apr 09, 2018 |
spyglaxx: hello spyglass, those of us using inverters do so not necessarily because we 'love' inverters but because of the convenience it provides.going the dc route may sound cool, I.e no extra cost of inverter purchase, no power losses arising from stepping up to a higher voltage, etc but when it comes to getting actual dc equipment to work with your system, that is where the nightmare begins.besides that, the size of wires you need for a dc only household would be like triple the size of wires needed for ac.then you have to deal with availability of dc spares and the rest. for ac however, once you get your inverter, every other thing falls into place. 7 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 10:56am On Mar 24, 2018 |
dmerciful, that is serious food for thought but at the end of the day I guess its a choice we all have to make one way or another. |
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