China's growing footprint in South Africa
Growing beyond China
Why is there a need to grow from trading to manufacturing in South Africa?
How does China help to develop alternative energy in South Africa?
What are the challenges faced?
Showing posts with label Alternate Energy. Show all posts
Showing posts with label Alternate Energy. Show all posts
Energy from water
What is water light?
Where was the technology developed?
Why is the development of renewable energy important?
How can this technology be adapted on a larger scale in Singapore?
Micro-grid in Pulau Ubin
I learned about the Pulau Ubin micro-grid which was launched in 2013 to provide more than 30 of the island’s residents and businesses with cleaner and affordable electricity during the 2018 Geography symposium LJ.
Above taken in 2018 during the learning journey to Pulau Ubin. The solar panels on the roof top slightly tilts downwards towards the east. This maximise the absorption of solar and also allow the water to drain off the roof.
http://geogshare.blogspot.com/2018/05/pulau-ulbin-micro-grid-test-bed.html?m=1
Glad to hear about the upgraded micro-grid, which will be completed in 2023.
Why is alternate energy needed?
How does this help the people living in Pulau ulbin?
What other measures are taken to mitigate climate change in Pulau Ubin
The improved micro-grid could potentially meet 90 per cent of the daily electricity demand in the main village using solar power.
Alternative energy resources
World Watch on Channel News Asia 15 Oct 2009
Just saw this report on TV – in Iceland, all the electricity is generated from renewable energy resources. 80% of the electricity is generated from hydro sources - rivers and glaciers and the other 20% from geothermal source. Geothermal sources are also used to heat houses and warm the roads so that it is snow free in winter. I am truly impressed that a country can be fully dependent on renewable natural resources to produce adequate energy supply for the country.
As countries developed, the need for energy resources has increased and there is a real urgency in looking at alternative energy resources. In Brazil most of the cars run on biofuel - ethanol produced from sugar cane. We are also looking into producing biofuel from palm oil. Of course there are still controversies in the use of biofuel as an alternative as its production takes up agricultural land which could have otherwise used for food production.
Just saw this report on TV – in Iceland, all the electricity is generated from renewable energy resources. 80% of the electricity is generated from hydro sources - rivers and glaciers and the other 20% from geothermal source. Geothermal sources are also used to heat houses and warm the roads so that it is snow free in winter. I am truly impressed that a country can be fully dependent on renewable natural resources to produce adequate energy supply for the country.
As countries developed, the need for energy resources has increased and there is a real urgency in looking at alternative energy resources. In Brazil most of the cars run on biofuel - ethanol produced from sugar cane. We are also looking into producing biofuel from palm oil. Of course there are still controversies in the use of biofuel as an alternative as its production takes up agricultural land which could have otherwise used for food production.
Singapore’s Geothermal Energy Potential
Read about this from an advertisment for a seminar and was surprised to learn that we actually can tap on geothermal energy in Singapore!
There are 3 geothermal hot springs and a possible steam seep in Singapore.
A new Hydrogeology model predicts that ground water in the centre of Singapore island sinks up to 4 km depth along joints and faults and is heated by the ≈200 million year old Bukit Tima Granite.
Artesian hot spring exit near Sembawang and on Pulau Tekong and are hot enough (≈70°C) to commercially generate electricity using new technology binary cycle power plants at SGD ≈0.07 per kWh, comparable with imported natural gas and cheaper than important oil.
However, to generate geothermal electricity even more efficiently, ≈2 kilometre deep L-shaped cold water injector and steam production boreholes are required to intercept hotter (>140°C) temperatures.
Electricity generated in this way would be green, clean, and renewable. Proof of concept might cost 25 – 30 million. A viable 50mWe geothermal power station could power for 50,000 homes, pay for itself in 5 years and save 0.5m barrels of oil/yr.
Speaker – Dr Grahame Oliver, SE Asia Petroleum Exploration Society Senior Visiting Fellow in the Department of Geography at NUS
There are 3 geothermal hot springs and a possible steam seep in Singapore.
A new Hydrogeology model predicts that ground water in the centre of Singapore island sinks up to 4 km depth along joints and faults and is heated by the ≈200 million year old Bukit Tima Granite.
Artesian hot spring exit near Sembawang and on Pulau Tekong and are hot enough (≈70°C) to commercially generate electricity using new technology binary cycle power plants at SGD ≈0.07 per kWh, comparable with imported natural gas and cheaper than important oil.
However, to generate geothermal electricity even more efficiently, ≈2 kilometre deep L-shaped cold water injector and steam production boreholes are required to intercept hotter (>140°C) temperatures.
Electricity generated in this way would be green, clean, and renewable. Proof of concept might cost 25 – 30 million. A viable 50mWe geothermal power station could power for 50,000 homes, pay for itself in 5 years and save 0.5m barrels of oil/yr.
Speaker – Dr Grahame Oliver, SE Asia Petroleum Exploration Society Senior Visiting Fellow in the Department of Geography at NUS
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