Msaada wa kimawazo (sola & bio gas)

[mjumbe wa bwana]

Tumia generator ya mafuta at least 2kva/au chukua 3kva kabisa.
Solar panels hapo utahitaji minimum 12 za 100W.

Asante kwa wazo lako

 

[mjumbe wa bwana]

1HP= 746W.Hivyo ili kupata panels za kutosha 746W. Utahitaji panel kadhaa( kutegemeana na ukubwa wa hizo panel).Mfano kama panel ni ya 100w.Basi 746/100= 7.4~ Panel 8 Panels.Au kama ukubwa wa panels zako ni 150 basi 746/150=5.Hivyo utahitaji panel 5 za 150w.kila moja.
Kwa sasa bei ya solar panel sokoni ni kati ya Tsh 1000 na Tsh 1500 kwa kila Watt moja.

Itakuwa ndo garama ya hio solar panels vip kwa betri au niunge direct

 

[mjumbe wa bwana]

Sola ni gharama Sana kwwnye installation hapo si Chin ya 2m bado uhakika wa jua.
Kwan umeme una cost ngap?

Unajua ukilima kwa umeme wa tanesco itakunyima faida kubwa au la uibe umeme ase

 

[mjumbe wa bwana]

Natumae mleta mada ulipata muongozo...

Mkuu ninefurahi sana kuna watu wanatoa nondo mpk nafarijika

 

[mjumbe wa bwana]

Tumia solar inverter VFD Ambayo it a vary speed ya pump depending on sun intensity from 300w to 1200w hence not necessarily Kua na masolar mengi and no battery at all.

Hapa mkuu cost yake inakuwaje kiongozi wangu

 

[Chenchele]

Hapa mkuu cost yake inakuwaje kiongozi wangu

Kama una pump ya <1.5hp pump inahitaji 1.2kW solar VFD ambayo ni TZS 1.3m


Kama hauna pump, chukua Hybrid solar pump ambayo unaunga panel moja kwa moja. Limitation ya hii ni kwamba control ya pump itakua chini hukohuko kwenye kisima. Ku access mpaka utoe pump.
Nayo around TZS 1.2-1.3m

 

[Kobello]

Itakuwa ndo garama ya hio solar panels vip kwa betri au niunge directView attachment 2215813

Usiende na mahesabu haya.

Hayajazingatia energy ya kickstarting ambayo ni kama mara mbili au tatu ya specified horsepower.
Chukua mfano wa friji, ili uiwashe inahitaji nishati kubwa kwa sekunde kama mbili hivi, halafu ndiyo itarudi kwenye specified wattage. Na ikipata baridi itazima.
Basi wewe chukulia pump yako kama friji, tanki likijaa unazima.
Horsepower hapo itakuwa at least 2HP AU HATA 3HP to be safe.
Pia itategemea na battery type kama ni LIthium au jelly. Lithium minimum unaacha 20% kabla ya kuicharge na hizi zingine unaacha 50% kabla ya kucharge.
Jitahidi uwe na battery bank ya karibu siku tatu ipo standby. Ni panels nyingi sana, angalau uwe na 2000 watts worth of panels.
Ni vizuri kama upo seheu zenye upepo, ununue wind turbine moja ya backup, kama Ista Breeze au Automaxx zipo vizuri, angalau za 500W.
All in all, you are better off na generator ya 3kvA unaipata kwa laki tano., unaweka wese na kupandisha maji when needed.

 

[Chenchele]

Usiende na mahesabu haya.

Hayajazingatia energy ya kickstarting ambayo ni kama mara mbili au tatu ya specified horsepower.
Chukua mfano wa friji, ili uiwashe inahitaji nishati kubwa kwa sekunde kama mbili hivi, halafu ndiyo itarudi kwenye specified wattage. Na ikipata baridi itazima.
Basi wewe chukulia pump yako kama friji, tanki likijaa unazima.
Horsepower hapo itakuwa at least 2HP AU HATA 3HP to be safe.
Pia itategemea na battery type kama ni LIthium au jelly. Lithium minimum unaacha 20% kabla ya kuicharge na hizi zingine unaacha 50% kabla ya kucharge.
Jitahidi uwe na battery bank ya karibu siku tatu ipo standby. Ni panels nyingi sana, angalau uwe na 2000 watts worth of panels.
Ni vizuri kama upo seheu zenye upepo, ununue wind turbine moja ya backup, kama Ista Breeze au Automaxx zipo vizuri, angalau za 500W.
All in all, you are better off na generator ya 3kvA unaipata kwa laki tano., unaweka wese na kupandisha maji when needed.

You are right. But starters zilidizainiwa kwa shida hii.

Your proposed system incur unecessary costs.

Unaongeza PV panels na battery just kusupport starting current? Fundi anafunga hivo but an Engineer can not. And that looks unskilled work.

Stuffs does not work that way.

You can not just run a pump from battery (limited knowledge work), that is not how electrical engineering works. (Reliability & cost) huja ziconsider. By the way, i have MSc in electrical engineering. If you want to learn, i am open. Usimshauri jamaa afunge hivyo unavosema. There is no sysems without design, hence calculus can not be omitted here brah!!

 

[Kobello]

You are right. But starters zilidizainiwa kwa shida hii.

Your proposed system incur unecessary costs.

Unaongeza PV panels na battery just kusupport starting current? Fundi anafunga hivo but an Engineer can not. And that looks unskilled work.

Stuffs does not work that way.

You can not just run a pump from battery (limited knowledge work), that is not how electrical engineering works. (Reliability & cost) huja ziconsider. By the way, i have MSc in electrical engineering. If you want to learn, i am open. Usimshauri jamaa afunge hivyo unavosema. There is no sysems without design, hence calculus can not be omitted here brah!!

Labda ungesoma conclusion yangu, ndiyo ungejibu na kuirekebisha. Since you have a MSc, basi utakuwa umeandika na kupitia papers nyingi.
Conclusion huwa zinakuwa mwisho.
Sijataka kuongelea VFD kwa sababu mimi sina uzoefu nazo.
Sasa ongea kisayansi, utueleweshe the most cost effective way than a 3KvA gas generator, wakati ushaambiwa anayo pump.
Tuwekee mahesabu ya kiukweli kwa sababu kusema tu 300W panels kwa mtu wa kawaida, inaweza ikawa ni misleading bila kueleza costs nyinginezo na what kind of technical know-how mtu awe nayo.
At the end of the day hiyo calculation aliyofanya based on jibu alilopewa siyo factual. Kanusha hilo kisayansi hapa.

 

[Chenchele]

Labda ungesoma conclusion yangu, ndiyo ungejibu na kuirekebisha. Since you have a MSc, basi utakuwa umeandika na kupitia papers nyingi.
Conclusion huwa zinakuwa mwisho.
Sijataka kuongelea VFD kwa sababu mimi sina uzoefu nazo.
Sasa ongea kisayansi, utueleweshe the most cost effective way than a 3KvA gas generator, wakati ushaambiwa anayo pump.
Tuwekee mahesabu ya kiukweli kwa sababu kusema tu 300W panels kwa mtu wa kawaida, inaweza ikawa ni misleading bila kueleza costs nyinginezo na what kind of technical know-how mtu awe nayo.
At the end of the day hiyo calculation aliyofanya based on jibu alilopewa siyo factual. Kanusha hilo kisayansi hapa.

Well per customer's data.

Pump: 1hp, 230VAC
Usage: 4+ hrs a day.

I would flow the design as follows:

Load analysis:-
1hp =746w
Under max load (assume max flowrate) take it 900w.

So my Amperage =900/230~4A

So i need 900W power at 230VAC and max of 4A.

Energy for 4+hrs =900/1000*4=3.6+kWh

You need 3.6+kWh electrical units for 4+hrs operation.

Power source selection:-

1. TANESCO
Take, 1kWh =350 TZS
For 3.6kWh you'll need 350*3.6= TZS 1260

So you will have TZS 0 as a capital (if you already have electricity and farm in your town's backyard) and a minimum of TZS 1260 as running cost everyday for TANESCO.

2. 3kVA generator

Purchase: say < TZS 350k
1 litre of petrol =9.5 kWh of energy (~)when completely burnt.

Thermodynamic rules: No petrol engine above 20% efficiency.

usable energy 20%*9.5 kWh=1.9kWh

To every gasoline litre you will have 1.9kWh, to have 3.6kWh (for 4+hrs operation) required you will need ~ 2 litres of gasoline that translates to 2*3260 = TZS 6520 every day (considering Ukraine-Russia war oil price)

3. Solar PV:-

VFD: 1.3m
I would go with a 200W PV panel.

At an irradiance of 1000w per sq.m standard laboratory test you get that rated 200W.

But assume my location can go as high as 900w per sq.m on a clear sky day i will have 180W out of 200w rated. And if it manage 400w per sq.m as min. Irradiance for 3-4 hrs i have 80w out of every 200w rated Panel. That is 400w and VFD would work out that 400w to the pump providing reduced flowrate. Yah that makes sense now.

180*5 equals 0.9kWh every hr, 3.6kWh required will be delivered within 4hrs on a clear sky.

If irradiace goes under 900w per sq.m then that is where an VFD comes in. It is MPPT powered, gonna have a field day there.
Delivering any Watts received from a panel to the load at a varying speed and that is for longer hours than rated until sundown.

For 900w load i wil need 5 PV panels at 200W rated.

1W PV is around TZS 1150

Five of 200W PV panels i need to have TZS 1.15m.


----------------
Assuming a constant loss of 2-3% in each power source.

And for irrrigation purpose a system should run 365 days.

Lets discuss here:

1. TANESCO:
Capital TZS 0 (assuming you have meter already.)
Running cost TZS: 1260*365 = 459,900

2. Gasoline generator:
Capital TZS: 350,000
Running cost: 6520*365=2,379,800

3. Solar PV
Capital TZS: 1.15m+1.3m =2,450,000
Running cost TZS: 0*365=0

------------
If we take a remote farm location (which is true always) then TANESCO energy is out of equation. That leaves gasoline and PV sources.

If the pump flowrate capacity is 60 litre per minute. Then at hour is 360litres and 4+hrs is 1440litres. Thats less than 2,000 water tank.

That is the limit of TANESCO and gasoline generator sources. Exceeding that, you edit the running costs of the no.s 1 &2 above.

While solar can give 3600litres for 10 straight clear sky sun-hours at TZS 0 running cost.


Plus
I did not include replacement cost and maintenance in general in each system, neither reliability nor extreme cases. Return cost, profit and any economic+enginering complicated scenarios.

----------


Considering a 3+ yrs of investment, come back to your calculations...see?



Happy Sunday.

 

[Mr.genius]

Well per customer's data.

Pump: 1hp, 230VAC
Usage: 4+ hrs a day.

I would flow the design as follows:

Load analysis:-
1hp =746w
Under max load (assume max flowrate) take it 900w.

So my Amperage =900/230~4A

So i need 900W power at 230VAC and max of 4A.

Energy for 4+hrs =900/1000*4=3.6+kWh

You need 3.6+kWh electrical units for 4+hrs operation.

Power source selection:-

1. TANESCO
Take, 1kWh =350 TZS
For 3.6kWh you'll need 350*3.6= TZS 1260

So you will have TZS 0 as a capital (if you already have electricity and farm in your town's backyard) and a minimum of TZS 1260 as running cost everyday for TANESCO.

2. 3kVA generator

Purchase: say < TZS 350k
1 litre of petrol =9.5 kWh of energy (~)when completely burnt.

Thermodynamic rules: No petrol engine above 20% efficiency.

usable energy 20%*9.5 kWh=1.9kWh

To every gasoline litre you will have 1.9kWh, to have 3.6kWh (for 4+hrs operation) required you will need ~ 2 litres of gasoline that translates to 2*3260 = TZS 6520 every day (considering Ukraine-Russia war oil price)

3. Solar PV:-

VFD: 1.3m
I would go with a 200W PV panel.

At an irradiance of 1000w per sq.m standard laboratory test you get that rated 200W.

But assume my location can go as high as 900w per sq.m on a clear sky day i will have 180W out of 200w rated. And if it manage 400w per sq.m as min. Irradiance for 3-4 hrs i have 80w out of every 200w rated Panel. That is 400w and VFD would work out that 400w to the pump providing reduced flowrate. Yah that makes sense now.

180*5 equals 0.9kWh every hr, 3.6kWh required will be delivered within 4hrs on a clear sky.

If irradiace goes under 900w per sq.m then that is where an VFD comes in. It is MPPT powered, gonna have a field day there.
Delivering any Watts received from a panel to the load at a varying speed and that is for longer hours than rated until sundown.

For 900w load i wil need 5 PV panels at 200W rated.

1W PV is around TZS 1150

Five of 200W PV panels i need to have TZS 1.15m.


----------------
Assuming a constant loss of 2-3% in each power source.

And for irrrigation purpose a system should run 365 days.

Lets discuss here:

1. TANESCO:
Capital TZS 0 (assuming you have meter already.)
Running cost TZS: 1260*365 = 459,900

2. Gasoline generator:
Capital TZS: 350,000
Running cost: 6520*365=2,379,800

3. Solar PV
Capital TZS: 1.15m+1.3m =2,450,000
Running cost TZS: 0*365=0

------------
If we take a remote farm location (which is true always) then TANESCO energy is out of equation. That leaves gasoline and PV sources.

If the pump flowrate capacity is 60 litre per minute. Then at hour is 360litres and 4+hrs is 1440litres. Thats less than 2,000 water tank.

That is the limit of TANESCO and gasoline generator sources. Exceeding that, you edit the running costs of the no.s 1 &2 above.

While solar can give 3600litres for 10 straight clear sky sun-hours at TZS 0 running cost.


Plus
I did not include replacement cost and maintenance in general in each system, neither reliability nor extreme cases. Return cost, profit and any economic+enginering complicated scenarios.

----------


Considering a 3+ yrs of investment, come back to your calculations...see?



Happy Sunday.

Huu uchambuzi si mchezo!

Sent from my SM-N910C using JamiiForums mobile app

 

[mjumbe wa bwana]

Well per customer's data.

Pump: 1hp, 230VAC
Usage: 4+ hrs a day.

I would flow the design as follows:

Load analysis:-
1hp =746w
Under max load (assume max flowrate) take it 900w.

So my Amperage =900/230~4A

So i need 900W power at 230VAC and max of 4A.

Energy for 4+hrs =900/1000*4=3.6+kWh

You need 3.6+kWh electrical units for 4+hrs operation.

Power source selection:-

1. TANESCO
Take, 1kWh =350 TZS
For 3.6kWh you'll need 350*3.6= TZS 1260

So you will have TZS 0 as a capital (if you already have electricity and farm in your town's backyard) and a minimum of TZS 1260 as running cost everyday for TANESCO.

2. 3kVA generator

Purchase: say < TZS 350k
1 litre of petrol =9.5 kWh of energy (~)when completely burnt.

Thermodynamic rules: No petrol engine above 20% efficiency.

usable energy 20%*9.5 kWh=1.9kWh

To every gasoline litre you will have 1.9kWh, to have 3.6kWh (for 4+hrs operation) required you will need ~ 2 litres of gasoline that translates to 2*3260 = TZS 6520 every day (considering Ukraine-Russia war oil price)

3. Solar PV:-

VFD: 1.3m
I would go with a 200W PV panel.

At an irradiance of 1000w per sq.m standard laboratory test you get that rated 200W.

But assume my location can go as high as 900w per sq.m on a clear sky day i will have 180W out of 200w rated. And if it manage 400w per sq.m as min. Irradiance for 3-4 hrs i have 80w out of every 200w rated Panel. That is 400w and VFD would work out that 400w to the pump providing reduced flowrate. Yah that makes sense now.

180*5 equals 0.9kWh every hr, 3.6kWh required will be delivered within 4hrs on a clear sky.

If irradiace goes under 900w per sq.m then that is where an VFD comes in. It is MPPT powered, gonna have a field day there.
Delivering any Watts received from a panel to the load at a varying speed and that is for longer hours than rated until sundown.

For 900w load i wil need 5 PV panels at 200W rated.

1W PV is around TZS 1150

Five of 200W PV panels i need to have TZS 1.15m.


----------------
Assuming a constant loss of 2-3% in each power source.

And for irrrigation purpose a system should run 365 days.

Lets discuss here:

1. TANESCO:
Capital TZS 0 (assuming you have meter already.)
Running cost TZS: 1260*365 = 459,900

2. Gasoline generator:
Capital TZS: 350,000
Running cost: 6520*365=2,379,800

3. Solar PV
Capital TZS: 1.15m+1.3m =2,450,000
Running cost TZS: 0*365=0

------------
If we take a remote farm location (which is true always) then TANESCO energy is out of equation. That leaves gasoline and PV sources.

If the pump flowrate capacity is 60 litre per minute. Then at hour is 360litres and 4+hrs is 1440litres. Thats less than 2,000 water tank.

That is the limit of TANESCO and gasoline generator sources. Exceeding that, you edit the running costs of the no.s 1 &2 above.

While solar can give 3600litres for 10 straight clear sky sun-hours at TZS 0 running cost.


Plus
I did not include replacement cost and maintenance in general in each system, neither reliability nor extreme cases. Return cost, profit and any economic+enginering complicated scenarios.

----------


Considering a 3+ yrs of investment, come back to your calculations...see?



Happy Sunday.

Mkuu hapa ulinitendea haki kabisa maana ulipita kila Kona

 

[joe0002]

Kupata maji kutoka kwenye kisima kwa kutumia nguvu ya jua au bio gas ni suluhisho nzuri kwa mazingira ambayo hayana umeme wa gridi. Kulingana na mahitaji yako, unaweza kutumia vyanzo hivi vya nishati kuzalisha umeme wa DC ambao utatumika kuendesha pampu yako ya maji ya AC.

Kwa kutumia nishati ya jua, unaweza kutumia paneli za jua zenye uwezo wa kuzalisha umeme wa DC. Ukubwa wa paneli za jua utategemea mahitaji yako ya nguvu ya umeme, jinsi ya hali ya hewa ya eneo lako, na wakati wa siku unayotaka kufanya kazi. Kwa mfano, ikiwa unahitaji kuzalisha umeme wa DC wa angalau 1000W kwa masaa 4+, unaweza kutumia paneli za jua zenye uwezo wa kuzalisha kati ya 250W hadi 300W kwa paneli na kuziunganisha kwa kutumia mfumo wa mwendelezo. Kwa hivyo, unaweza kutumia paneli za jua zenye uwezo wa kuzalisha angalau 4,000W kwa siku kwa masaa 4+.

Kuhusu gharama, bei ya paneli za jua inaweza kutofautiana kulingana na ukubwa, ubora, na chapa. Bei kwa paneli za jua zenye uwezo wa kuzalisha kati ya 250W hadi 300W inaweza kuwa kati ya Tsh 200,000 hadi Tsh 400,000. Hata hivyo, gharama ya jumla ya mfumo itategemea pia vitu vingine kama vile betri, mfumo wa kudhibiti, na vifaa vingine vya ufungaji.

Kwa kutumia bio gas, unaweza kutumia jenereta ya bio gas ili kuzalisha umeme wa DC. Ukubwa wa jenereta ya bio gas itategemea pia mahitaji yako ya nguvu ya umeme. Kwa mfano, ikiwa unahitaji kuzalisha umeme wa DC wa angalau 1000W kwa masaa 4+, unaweza kutumia jenereta ya bio gas yenye uwezo wa kuzalisha angalau 4,000W kwa siku kwa masaa 4+.

Kuhusu gharama, bei ya jenereta ya bio gas inaweza kutofautiana kulingana na ukubwa, ubora, na chapa. Bei kwa jenereta ya bio gas zenye uwezo wa kuzalisha umeme wa kati ya 1kW hadi 5kW inaweza kuwa kati ya Tsh 5,000,000 hadi Tsh 10,000,000. Hata hivyo, gharama ya jumla ya mfumo itategemea pia vitu vingine kama vile mabomba, betri, mfumo wa ufungaji, na vifaa vingine vya kudhibiti.

Ni muhimu kuzingatia kuwa uzalishaji wa nishati za jua na bio gas unategemea hali ya hewa na hali ya mazingira ya eneo lako. Pia, ni muhimu kuzingatia gharama ya ufungaji na matengenezo ya mfumo wa nishati ili kupata suluhisho linalofaa kwa mahitaji yako.

 

[mjumbe wa bwana]

Kupata maji kutoka kwenye kisima kwa kutumia nguvu ya jua au bio gas ni suluhisho nzuri kwa mazingira ambayo hayana umeme wa gridi. Kulingana na mahitaji yako, unaweza kutumia vyanzo hivi vya nishati kuzalisha umeme wa DC ambao utatumika kuendesha pampu yako ya maji ya AC.

Kwa kutumia nishati ya jua, unaweza kutumia paneli za jua zenye uwezo wa kuzalisha umeme wa DC. Ukubwa wa paneli za jua utategemea mahitaji yako ya nguvu ya umeme, jinsi ya hali ya hewa ya eneo lako, na wakati wa siku unayotaka kufanya kazi. Kwa mfano, ikiwa unahitaji kuzalisha umeme wa DC wa angalau 1000W kwa masaa 4+, unaweza kutumia paneli za jua zenye uwezo wa kuzalisha kati ya 250W hadi 300W kwa paneli na kuziunganisha kwa kutumia mfumo wa mwendelezo. Kwa hivyo, unaweza kutumia paneli za jua zenye uwezo wa kuzalisha angalau 4,000W kwa siku kwa masaa 4+.

Kuhusu gharama, bei ya paneli za jua inaweza kutofautiana kulingana na ukubwa, ubora, na chapa. Bei kwa paneli za jua zenye uwezo wa kuzalisha kati ya 250W hadi 300W inaweza kuwa kati ya Tsh 200,000 hadi Tsh 400,000. Hata hivyo, gharama ya jumla ya mfumo itategemea pia vitu vingine kama vile betri, mfumo wa kudhibiti, na vifaa vingine vya ufungaji.

Kwa kutumia bio gas, unaweza kutumia jenereta ya bio gas ili kuzalisha umeme wa DC. Ukubwa wa jenereta ya bio gas itategemea pia mahitaji yako ya nguvu ya umeme. Kwa mfano, ikiwa unahitaji kuzalisha umeme wa DC wa angalau 1000W kwa masaa 4+, unaweza kutumia jenereta ya bio gas yenye uwezo wa kuzalisha angalau 4,000W kwa siku kwa masaa 4+.

Kuhusu gharama, bei ya jenereta ya bio gas inaweza kutofautiana kulingana na ukubwa, ubora, na chapa. Bei kwa jenereta ya bio gas zenye uwezo wa kuzalisha umeme wa kati ya 1kW hadi 5kW inaweza kuwa kati ya Tsh 5,000,000 hadi Tsh 10,000,000. Hata hivyo, gharama ya jumla ya mfumo itategemea pia vitu vingine kama vile mabomba, betri, mfumo wa ufungaji, na vifaa vingine vya kudhibiti.

Ni muhimu kuzingatia kuwa uzalishaji wa nishati za jua na bio gas unategemea hali ya hewa na hali ya mazingira ya eneo lako. Pia, ni muhimu kuzingatia gharama ya ufungaji na matengenezo ya mfumo wa nishati ili kupata suluhisho linalofaa kwa mahitaji yako.

Mkuu samahani ww ni mbobezi wa mifumo ya bio gas

 

[mjumbe wa bwana]

Hapa nazungumzia pump za kuvuta maji kwenye visima. Nimeambiwa ipo ya solar Tsh. 150,000/- panel watt 200 na kuendelea na ya umeme pia ipo niliambiwa bei ni sawa na ya solar.

Uwezo: 100m kutoka chini.

Sasa mnishauri, nahofia hii ya umeme nahisi inaweza kuwa ina kula unit nyingi sana. Hii ya solar limitation yake ni usiku au pasipokua na jua!

Kama una utaalam nishauri ipi nzuri na kwanini?