Why generating power in Mtwara makes lots of Economic sense

[simplemind]

Ever wondered what typical thermal efficiency of an open cycle gas turbine is? A. 90% B.50% C.35% D.10%. The correct answer is C ie 35%. 65% of input energy(fuel) is wasted as heat. Now you may be wondering what has turbine efficiency got to do with generating power in Mtwara vis a vis Dar es saaalam. To generate power in Dar we need to transport natural gas by whatever means to the power station-by road,rail,air , sea or pipeline. Consesus is pipeline is cheapest alternative. Hence we are building a pipeline at considerable cost to the nation with enough capacity to supply 3000 mw open cycle gas power plant(last time i checked project cost equal usd 1.2 billion, serious no kidding). Gas turbine efficiency is 35%, implies 65% of pipeline capacity dedicated/conveys waste heat gas. Ie usd 780 million of 1.2 billion finances waste heat(assuming pipeline is dedicated to electricity production only)
A better option is to generate power in Mtwara and transmit it via HVDC with loss of less than 3% per 1000 km to whole of EA and beyond. Besides HVDC line less costly tha HVAC- no need for 3 wires. (longest hvdc line to date is Rio Maidera link consist of two bipoles 3150 mw each 2500 km)

 

[MANI]

The problem here our leader don't care if the country will benifit or not, they are interested on what will they gain?

 

[Rohombaya]

Ever wondered what typical thermal efficiency of an open cycle gas turbine is? A. 90% B.50% C.35% D.10%. The correct answer is C ie 35%. 65% of input energy(fuel) is wasted as heat. Now you may be wondering what has turbine efficiency got to do with generating power in Mtwara vis a vis Dar es saaalam. To generate power in Dar we need to transport natural gas by whatever means to the power station-by road,rail,air , sea or pipeline. Consesus is pipeline is cheapest alternative. Hence we are building a pipeline at considerable cost to the nation with enough capacity to supply 3000 mw open cycle gas power plant(last time i checked project cost equal usd 1.2 billion, serious no kidding). Gas turbine efficiency is 35%, implies 65% of pipeline capacity dedicated/conveys waste heat gas. Ie usd 780 million of 1.2 billion finances waste heat(assuming pipeline is dedicated to electricity production only)
A better option is to generate power in Mtwara and transmit it via HVDC with loss of less than 3% per 1000 km to whole of EA and beyond. Besides HVDC line less costly tha HVAC- no need for 3 wires. (longest hvdc line to date is Rio Maidera link consist of two bipoles 3150 mw each 2500 km)

Wewe kweli ni simplemind na si kwa jina ila kwa kikweli. unajua sababu za hao kujenga hiyo HVDC link?? unajua mahitaji yao?? Unajua mahitaji yetu?? Hiyo Rio Madeira HVDC system wala haifanani na ishu ya gesi ya mtwara na wala haifanani na mahitaji yetu.
The Rio Madeira HVDC System

 

[simplemind]

Wewe kweli ni simplemind na si kwa jina ila kwa kikweli. unajua sababu za hao kujenga hiyo HVDC link?? unajua mahitaji yao?? Unajua mahitaji yetu?? Hiyo Rio Madeira HVDC system wala haifanani na ishu ya gesi ya mtwara na wala haifanani na mahitaji yetu.
The Rio Madeira HVDC System

Silly. Dont be shortsighted.How many Tanzanian homes are connected to Grid today? Ever projected what power demand for the country and EA region would be in 10 to 20 years time? Understand meaning of value addition? Briefly power demand is on the increase and we are better of selling electricity than raw natural gas.

 

[Rohombaya]

Silly. Dont be shortsighted.How many Tanzanian homes are connected to Grid today? Ever projected what power demand for the country and EA region would be in 10 to 20 years time? Understand meaning of value addition? Briefly power demand is on the increase and we are better of selling electricity than raw natural gas.

Unajua ishu za kukopy na kupesti ndiyo zinawazingua watu wengi. do you the reason why they did choose HVDC??? Tafuta solution yako kutoka kwenye matatizo yako na siyo kutoka kwenye matatizo ya wengine.

[TABLE="class: standard"]
[TR="class: headerRow"]
[TH="width: 50%"]Main data[/TH]
[TH="width: 50%"]

[/TH]
[/TR]
[TR="class: altRow"]
[TD="width: 50%"]Commissioning year: [/TD]
[TD="width: 50%"]2013[/TD]
[/TR]
[TR]
[TD="width: 50%"]Power rating: [/TD]
[TD="width: 50%"]3 150 MW
2 x 400 MW (back-to-back)[/TD]
[/TR]
[TR="class: altRow"]
[TD="width: 50%"]AC voltage:[/TD]
[TD="width: 50%"]Transmission link: 500 kV
Back-to-back: 500 kV and 230 kV[/TD]
[/TR]
[TR]
[TD="width: 50%"]DC voltage:[/TD]
[TD="width: 50%"]± 600 kV[/TD]
[/TR]
[TR="class: altRow"]
[TD="width: 50%"]Length of DC overhead line:[/TD]
[TD="width: 50%"]2,375 km[/TD]
[/TR]
[TR]
[TD="width: 50%"]Type of link[/TD]
[TD="width: 50%"]* Long distance overhead line
* Back-to-back station[/TD]
[/TR]
[TR="class: altRow"]
[TD="width: 50%"]Main reason for choosing HVDC:[/TD]
[TD="width: 50%"]Long distance
Back-to-back: Asynchronous networks [/TD]
[/TR]
[/TABLE]

Sasa hapo kwenye red Lindi Kilwa na wengineo utawasaidiaje?? Usikurupuke kutaka keki wakati hata mkate bado unakusumbua

 

[MPUNGA]

mimi nafikiri Rohombaya ungekuja na hoja za counter hoja za Simple mind ili na sisi tufaidike na hoja za kitaalamu za HDVC na HAVC na maswala mazima ya ufanisi "efficiency" ya kuzalisha umeme karibu na source ya gesi au mbali kabisa ya hapo. umeme unaopotea njiani na gharama zake au gharama za hiyo wastage ya gesi unapoenda kuzalisha mbali na hapo. Tunasubiria kwa hamu hoja zenu za kitaalamu.

 

[Mpita Njia]

Unajua ishu za kukopy na kupesti ndiyo zinawazingua watu wengi. do you the reason why they did choose HVDC??? Tafuta solution yako kutoka kwenye matatizo yako na siyo kutoka kwenye matatizo ya wengine.

[TABLE="class: standard"]
[TR="class: headerRow"]
[TH]Main data
[/TH]
[TH="width: 50%"]

[/TH]
[/TR]
[TR="class: altRow"]
[TD="width: 50%"]Commissioning year:
[/TD]
[TD="width: 50%"]2013
[/TD]
[/TR]
[TR]
[TD="width: 50%"]Power rating:
[/TD]
[TD="width: 50%"]3 150 MW
2 x 400 MW (back-to-back)
[/TD]
[/TR]
[TR="class: altRow"]
[TD="width: 50%"]AC voltage:
[/TD]
[TD="width: 50%"]Transmission link: 500 kV
Back-to-back: 500 kV and 230 kV
[/TD]
[/TR]
[TR]
[TD="width: 50%"]DC voltage:
[/TD]
[TD="width: 50%"]± 600 kV
[/TD]
[/TR]
[TR="class: altRow"]
[TD="width: 50%"]Length of DC overhead line:
[/TD]
[TD="width: 50%"]2,375 km
[/TD]
[/TR]
[TR]
[TD="width: 50%"]Type of link
[/TD]
[TD="width: 50%"]* Long distance overhead line
* Back-to-back station
[/TD]
[/TR]
[TR="class: altRow"]
[TD="width: 50%"]Main reason for choosing HVDC:
[/TD]
[TD="width: 50%"]Long distance
Back-to-back: Asynchronous networks
[/TD]
[/TR]
[/TABLE]

Sasa hapo kwenye red Lindi Kilwa na wengineo utawasaidiaje?? Usikurupuke kutaka keki wakati hata mkate bado unakusumbua

Mimi si mtalaamu wa masuala haya lakini ukiangalia logically unaweza kuzalisha umeme Mtwara na ule unaotaka kuusafirisha masafa marefu ukatumia hiyo njia ya HVDC na ule utakaotumika Lindi na Mtwara na maeneo ya karibu ukawa branched out hapohapo kwenye generators kabla ya kuingizwa kwenye ile njia ya masafa marefu.

 

[Rohombaya]

Mimi si mtalaamu wa masuala haya lakini ukiangalia logically unaweza kuzalisha umeme Mtwara na ule unaotaka kuusafirisha masafa marefu ukatumia hiyo njia ya HVDC na ule utakaotumika Lindi na Mtwara na maeneo ya karibu ukawa branched out hapohapo kwenye generators kabla ya kuingizwa kwenye ile njia ya masafa marefu.

Hapo kwenye red inatosha. Waachie wataalam. Lojik zipo kwenye siasa only.

 

[Mpita Njia]

Hapo kwenye red inatosha. Waachie wataalam. Lojik zipo kwenye siasa only.

Haya, kila la heri wataalamu

 

[Rohombaya]

Haya, kila la heri wataalamu

ni kweli tuwatakie kila la heri na wanasiasa wasiwaingilie. Amina

 

[simplemind]

mimi nafikiri Rohombaya ungekuja na hoja za counter hoja za Simple mind ili na sisi tufaidike na hoja za kitaalamu za HDVC na HAVC na maswala mazima ya ufanisi "efficiency" ya kuzalisha umeme karibu na source ya gesi au mbali kabisa ya hapo. umeme unaopotea njiani na gharama zake au gharama za hiyo wastage ya gesi unapoenda kuzalisha mbali na hapo. Tunasubiria kwa hamu hoja zenu za kitaalamu.

Transmission cost ya gas ni kubwa maradufu kuliko transmission cost ya umeme. Kwa hivo gharama ya kuzalisha umeme dar ni kubwa zaidi kuliko gharama ya kuzalisha umeme moja kwa moja Mtwara kutokana na high transmission cost ya gesi. Situation is aggravated further by fact that only 35% percent of gas is energy is actually converted to electricity. Hence 65 % of installed pipeline capacity transmit waste heat gas. Contrast this with hvdc line where 97 % of conveyed electrical energy is available at destination.

 

[daGoldFather]

Salaam,
Nafikiri mjadala huu unatoa mwanga ss...zingatieni scenerio ambapo gas inaletwa kwa ajili ya kuiconvert kwenye umeme lakini kiasi kingine kwa ajili ya kusambazwa kwa domestic na industrial use kama unavosikia kwamba kuna viwanda 34 vinatumia gas.