Solar system calculation (engineers dan bijak pandai sila tolong dan betulkan saya ya)
Aim off-grid solar system is to power my 2 water-pump for my NFT Hydroponic system.
Both pumps are 230VAC with combined 100W rating running 24/7
Here a thread & calculation
Aim off-grid solar system is to power my 2 water-pump for my NFT Hydroponic system.
Both pumps are 230VAC with combined 100W rating running 24/7
Here a thread & calculation
1) Electrical Load per day
100W x 24H = 2,400W/day
2) Battery capacity
If a batt discharged after 100% charge, we require at most 50% or even less if using lead-acid batt
VAC to VDC conversion : 2,400W divide by 12V system = 200Ah (24V system = 100Ah)
100W x 24H = 2,400W/day
2) Battery capacity
If a batt discharged after 100% charge, we require at most 50% or even less if using lead-acid batt
VAC to VDC conversion : 2,400W divide by 12V system = 200Ah (24V system = 100Ah)
Taking into account to cover nighttime use & daytime charging while using, we need at least battery double the size of electrical load
Electric load 200Ah (double load = 400Ah battery)
3) Solar panel
Solar panel need to be able to charge 50% of the batt capacity in daytime
Electric load 200Ah (double load = 400Ah battery)
3) Solar panel
Solar panel need to be able to charge 50% of the batt capacity in daytime
Thus we need to charge 200Ah in about 8-10hrs. Say we take 10hrs charging time
Panel has between 5.5-10Ah output depending on size and type
(12V system) 200Ah divide by 10hours= we need solar panel that can produce 20Ah output which is unavailable in the market
Panel has between 5.5-10Ah output depending on size and type
(12V system) 200Ah divide by 10hours= we need solar panel that can produce 20Ah output which is unavailable in the market
So we need to use a Two higher grade 10Ah solar panel arranged in parallel to have Ampere addition rather than Volts
For 24V system, 2 solar panels in series, we require 100Ah to be charged in 10Hours,we need 2 solar panel each produce 10Ah solar panels but arranged in series
For 24V system, 2 solar panels in series, we require 100Ah to be charged in 10Hours,we need 2 solar panel each produce 10Ah solar panels but arranged in series
Costing
1) 400Ah battery will cost around rm1.5k (need 4bijik 100Ah batt)
2) panel will be rm800
3) inverter = rm300
4) solar controller charger = rm200
Thus total cost will be close to rm3k
Not including replacing battery every few years
1) 400Ah battery will cost around rm1.5k (need 4bijik 100Ah batt)
2) panel will be rm800
3) inverter = rm300
4) solar controller charger = rm200
Thus total cost will be close to rm3k
Not including replacing battery every few years
Cost of rm3k, to save myself from paying around rm5-15 electrical bill per month for the pumps
If we take rm15 per month bill, i will break even at 200month ~ 16yrs which i think quite illogical
If we take rm15 per month bill, i will break even at 200month ~ 16yrs which i think quite illogical
Perhaps im wrongly assuming my system and maybe too much overestimating my solar system that i require
Using renewable energy is commendable but if its cost too much maybe its not worth it😅😅
Anyone care to help?
@surayaror can help spread the enquiry in twitterjaya?
#Solar
Using renewable energy is commendable but if its cost too much maybe its not worth it😅😅
Anyone care to help?
@surayaror can help spread the enquiry in twitterjaya?
#Solar
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