₦airaland Forum

justcallmenuel:
4000watt souer pure sine wave inverter, #115000. Contact us on 08168986461

brightk:
I am looking for a reliable deep cycle battery.. i have full river in mind but dont know its origin if its a US, UK, Indian, China, Tawain battery.. Please recommend base on experience and origin... someone is advertising this kunglong battery.. Has anyone used it?

JohnKester:
Mine is actually on a new building and central hot water supply system was already provided for in the piping design.

I did not have much problem with the installation because the building has a concrete flat roof and I just installed it on the roof.

It can be installed anywhere you have direct unhindered sunlight to it even if it is not close to the tank stand. All that is required is to pipe inlet supply to it and pipe outlet to the house and the rest is for it to work. It can be on its own tank stand, which however, should be below the level of the water supply tank stand, so that gravity can still supply water to the water heater.

Note that having it above your tank stand would mean that you will require a pump to send water to it, or pump directly from the sumo to it. However, this may not function well as the tank may run dry, except of course you automate the pumping which may deplete your batteries if it happens frequently at night when there is no sunlight. The design of the solar water heater is such that once water is going into the house from the outlet, the inlet will automatically open to let in water to fill up the tank. You will achieve better result if water supply to it comes from your overhead tank that will not require power.

Cheers

oneshowguy:
Kung Long Batteries Industrial Co., Ltd. is a publicly traded expert manufacturer of lead acid batteries. It owns and operates two manufacturing facilities in Taiwan and one in Viet Nam. It manufactures more than 200 different types of batteries, including batteries for electric vehicles, uninterrupted power supply systems, alternative energy systems, solar energy systems, mobile energy, motorcycle and automotive uses. More information concerning Kung Long Batteries is available on its website at http://www.kunglong.com/

kiekie1:
We recently rounded up another supply and installation of power inverter & solar system within Lagos state .
You can always feel free to CALL for any item and openly discuss with me and I will definitely revert .

hazelj:
Hello all,
I am putting up my whole solar power system up for sale. It was setup and installed by Richmon74.
The components are as follows:
4 255W Solarworld Mono panels
Morningstar MPPT 60Amp Charge controller
2 12v 160aH Fullriver Batteries virtually brand new (installed July 2016)
1 Sukam inverter 24v 1.4Kva
It comes with a stainless steel roof mount and battery rack.
Cables and connectors are bundled free of charge.

Total cost 470k if bought as a bundle.

This is an excellent deal as this setup will cost almost twice this to implement brand new.
Reason for selling is relocation.
Was not in the country for 2 months so the batteries have been floating since.

Would prefer to sell this as a unit.

GeorgeD1:
all,
my solar water heater is finally up and running.
pictures to follow soon.

kiekie1:
Axpert, Ipower etc it all depends on exact load u wanna power up on this hybrid inverters ... It might not look as rugged as stand alone pure sine wave inverters which comfortably power 1.5hp water pump, air condition (1hp /1.5hp)electric iron,microwave, hair dryer etc (one at a time) ... If your max load is just fridges or freezers & microwave , hybrid inverter will serve for that . Thanks

#Note: below is an attached pic of Ipower 5kva 48v hybrid inverter which can't comfortably power some of the loads I listed above (one load at a time e.g water pump or electric iron, split ac since client has bout 3.5kw array).. Client got tired of blown mosfets and replaced hybrid inverter with 5kva power star light 4000w 48v stand alone inverter ..Client even got discouraged on hybrid inbuilt solar charging algorithm , he used an optional morningstar pwm before pulling down hybrid system to a stand alone heavy duty inverter system .. He is currently on an ep solar 60a mppt ..

GeorgeD1:
so, revisiting that same calculation above and being careful to leave every other parameter intact, it would look like this:

30ltrs in 1 wk is roughly 10 litres/day.
1month = 300litrs
at the present pump price of 145naira/ltr (up from 65 naira per litre), it becomes: 300*145= 43,500 naira (instead of 19,500 naira) spent for fuel alone in a month.
and in a year that amounts to: 43,500*12 = 522,000 naira

and of course if the fuel pump price can increase by about 123% in just six years, we can only just imagine what the next 25yrs will
look like.

bottom line: there is never a wrong time to go solar!

Barezzi:
Battleaxe, I prefer the hybrid inverter to modular setups.

I currently own the Magnum MS4348PE, FM60 charge controller, PV array of about 3500w, 400Ah 48Vdc battery bank, dc disconnect box, surge protectors etc. I've been using this for more than 4 years i think...

I'm currently dissatisfied with it cos it's dumb. I've been racking my head on how to implement an intelligent energy management system with it, but no luck.

I want a setup that can intelligently look at my PV production, Battery capacity, PHCN, time of day and smartly decide the mix to power my loads.
A smart hybrid inverter can comfortably do this...
Hey, my setup listed above is up for sale, interested buyers are welcome

JUO:
No need to fight please. We are here to learn. How do I wake this battery, the owner used acid on it?

donmajor2:
What a great thread! After following this thread for quite some time now, I am glad to begin with a humble entrance into the renewable energy world.

Many thanks to Sir Frankie(Kiekie) for his prompt delivery of Two 12V Trojan batteries and 2KVA Voltron pure sine wave inverter to my doorstep in Benin City.

Special thanks to all the gurus in the house as you make time to respond to virtually all the questions from the newbies like me. I will appreciate your mentoring as I sojourn the solar way.

richmon74:
Happy Black Friday Sir Frank
Please remove the image you are using on this advert. It is not right for you to copy my image and use consistently for your public advert.
Take care and happy sales

badaru1:
Good day guys, I have this Auxano 2kva 24v inverter, recently it stopped working and it's showing this message on the led screen. What could be the solution?

earthrealm:
FOR THE OP asking the pwm and mppt differences...
came across this write up, though i wish a forum member who has both types of cc would hook them for 1wk each, and compare the harvests


8. General conclusion
Temperature
A standard crystalline solar panel with a nominal voltage of 12 volts consists of 36 cells in series. At
25°C cell temperature, the output current of this panel will be nearly constant up to about 17 volts.
Above this voltage, current drops off rapidly, resulting in maximum power being produced at
around 18 volts.
Unfortunately the voltage point at which the current starts to drop of decreases with increasing
temperature. Below that voltage point the current however remains practically constant, and is not
influenced by temperature.
The output power and output voltage both decrease by about 4,5% for every 10°C of temperature
increase.
PWM controller
When a solar array is connected to the battery through a PWM charge controller, its voltage will be
pulled down to near that of the battery. This leads to a suboptimal power output wattage
(Watt = Amp x Volt) at low and at very high solar cell temperatures.
In times of rainy or heavily clouded days or during heavy intermittant loads a situation may occur
where the battery voltage becomes lower than is normal. This would further pull down the panel
voltage; thus degrading the output even further.
At very high cell temperatures the voltage drop off point may decrease below the voltage needed
to fully charge the battery.
As array area increases linearly with power, cabling cross sectional area and cable length therefore
both increase with power, resulting in substantial cable costs, in the case of arrays exceeding a few
100 Watts.
The PWM charge controller is therefore a good low cost solution for small systems only, when cell
temperature is moderate too high (between 45°C and 75°C).
MPPT controller
Besides performing the function of a basic controller, an MPPT controller also includes a DC to DC
voltage converter, converting the voltage of the array to that required by the batteries, with very
little loss of power.
An MPPT controller attempts to harvest power from the array near its Maximum Power Point, whilst
supplying the varying voltage requirements of the battery plus load. Thus, it essentially decouples
the array and battery voltages, so that there can be a 12 volt battery on one side of the MPPT
charge controller and two 12 Vpanels wired in series to produce 36 volts on the other.
If connected to a PV array with a substantially higher nominal voltage than the battery voltage, an
MPPT controller will therefore provide charge current even at very high cell temperatures or in low
irradiance conditions when a PWM controller would not help much.
As array size increases, both cabling cross sectional area and cable length will increase. The option
to wire more panels in series and thereby decrease current, is a compelling reason to install an
MPPT controller as soon as the array power exceeds a few hundred Watts (12 V battery), or several
100 Watts (24 V or 48 V battery).

An MPPT charge controller is therefore the solution of choice:
a) If cell temperature will frequently be low (below 45°C) or very high (more than 75°C).
b) If cabling cost can be reduced substantially by increasing array voltage.
c) If system output at low irradiance is important.
d) If partial shading is a concern

kiekie1:
Thanks Sir, I humbly await more transactions from you....!

abunafiu:
my total pv strength is 9 units of 120w mono joysolar. total 1080watts. Though I have 10 units of them. But I used only 9 to achieve 3 by 3 config because I use trojan batteries Which needs occasional equalisation. I use a 60amps morning star mppt controller. My inverter is a 4k mustpower inverter which charges with a maximum charge current of 41amps. I purchased the inverter Dec 2014. so far so good. The inverter is very good and affordable. Repairs incase of fault is now very easy. And incase of irreparable damage, the power board is available with solardepotng.com . I saw a box containing quite a number of boards during my last visit.

@tundebabzy, I can only share u pictures of snap shot of the controllers display. There is nothing else to.prove my claim of energy harvest. I'll send it 2 u on whatsapp.