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Global warming and energy – intertwined problems in Africa

Posted on 13 January 2014 by John Abraham

Much of my work involves the design and installation of clean and robust energy sources in remote parts of the world. On a recent trip to Kenya, my family had the opportunity to tour the Lake Naivasha region in Kenya. This region contains a treasure of wildlife and was a filming location for the movie "Out of Africa." During a boat ride, we witnessed the impacts on climate change – not through academic journal articles or conference presentations – but through people who see climate change with their own eyes.

In past years, Lake Naivasha had seen dramatic reductions in water level. The coastline had changed and plants and animals had adapted to a new normal. Recently, however, extreme rains have raised the waters approximately 4 meters according to our guide. The new waterline had submerged and killed beautiful Acacia trees. After conversations with many other Kenyans, it was apparent that the reliable wet-dry weather patterns had become more erratic; you didn't have to witness dying Acacia trees when farmers throughout the country told similar tales. Extreme weather swings were evident here before our eyes.

Flooding in Western Kenya, submerged buildings and Acacia trees.

Flooding in Western Kenya, submerged buildings and Acacia trees.

Kenyan culture (and much of Africa) is deeply rooted in the patterns of weather and climate; much of their economy depends on agricultural production. That dependency has given them much clearer foresight than others about how to plan for the changed future.

The entirety of Kenya has awakened to the threats of climate change, including the government, agricultural sectors, energy industries and the educational system. My journey to learn more about Kenya's plans brought me to the beautiful and large Kenyatta University campus, just northeast of Nairobi. There, very new and quickly growing programs in mechanical engineering, energy and sustainability, and agricultural engineering are just a few of the programs training tomorrow's technology leaders to make an impact solving today's problems.

Among the many initiatives are goals to provide clean, renewable, and robust energy for the campus and the country. Some applications they are focusing on are wind-powered water-pumping systems. The plan is to design, manufacture, install, and service small-scale wind power systems that slowly pump water into elevated storage tanks throughout the day and night. Students, faculty, and staff draw the water is drawn down, typically during morning and evening hours. The prototype wind turbine will be adapted to manufacturing techniques used locally, near the university. It is hoped that wide-scale testing of the wind turbine system will occur over the next three years and thereafter, fast market penetration throughout Africa will be inevitable.

Another emerging technology coming from Kenyatta is the use of novel technologies for heating, ventilation, and air-conditioning (HVAC). By using thermochemical sorption technologies, sometimes with solar heating, Dr. Jeremiah Kiplagat (recent recipient of the African Education Leadership Outstanding Professor Award) and his colleagues are setting the framework for improving the performance of refrigeration systems using these methodologies.

As a third example, a series of faculty-led student projects have been completed to develop solar concentrating and tracking systems for heat generation and photovoltaic power generation. The research teams have developed effective and simple means of moving reflecting mirrors and parabolic concentrators with the sun throughout the day to increase the amount of absorbed solar energy and increase the efficiency of the overall system.

While the faculty and staff are at the forefront in technology development projects such as these, much credit must be given to the administration. With implementation of new degrees such as doctoral programs in sustainability and masters programs in mechanical engineering, electrical engineering, engineering hydrology, and biomedical engineering, with a focus on solving the energy and health problems that are prevalent in the East African region, this university, and the country as a whole are destined to remain leaders in their geographical region.

It is clear from formal academic studies and from anecdotal evidence that developing countries that rely upon agriculture will suffer greatly from climate change in the coming decades. It is hence apparent that the solutions to climate change, such as accelerated implementation of clean and renewable power, must be implemented with great wisdom so that people in these regions are able to access the same low-cost electricity that other nations have enjoyed. In this regard, the climate-energy problem is often thought of as a double-edged sword – solutions to the climate problem make access to low-cost electricity more difficult.

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Comments

Comments 1 to 6:

  1. If I'm reading the comments on this article correctly...

    ...then no-one is interested in Africa.

    But 'Every single thing every one of us does affects everyone affects everybody, all over the world. It's one global ecosystem'.

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    Moderator Response:

    [PW] Eliminated unnecessary white space.

  2. Kevin C @1

    I don't know how old this post is, but it has not been in my inbox for very long, and certainly no longer than many of its companions so your assumption that all who comment herein are not interested in Africa is a bit premature. And just for the record, dead wrong in my case at least. 

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  3. John,  Excellent posting.  I'm somewhat puzzeled by your last sentence though.  Please enlighten me on "In this regard, the climate-energy problem is often thought of as a double-edged sword – solutions to the climate problem make access to low-cost electricity more difficult."  It seems to me that at least some solutions to the climate problem will make access to cheap and clean energy at low cost more readily available to people in need. Implementation with great care is essential.  It's mainly in the grid.  We have the technology for wind and solar and other sources of clean energy, but not the grid.  Or did I miss something in your post?

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  4. After living in Africa for 15 years, I can assure you that erratic weather with extreme floods and extended droughts are the norm.  It may be true that the weather is getting more erratic but I would like to see records from weather stations before drawing any conclusions.  The people of Africa are no more or less likely to misremember than we in the West are.  We all like to think that the time we are in is something special and out of the ordinary. 

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  5. Fungelstrumpet: Fair comment. Actually, all I hear in the media about Africa is conflict related, so a regular reminder of what's going on climate-wise is important.

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  6. The best opportunity to reduce our CO2 footprint is to help undeveloped and developing regions to leapfrog the West into much greater efficiency. The grid is terribly wasteful. Distributed generation can happen painlessly, and avoid grid waste. People are use to a lower rate of energy use, and so moving up a little is a great comfort, yet costs little in comparison to wasteful ways of developed regions. Unless something like Pluvinergy is made operative, we must jump way ahead of what we have achieved so far; practically nothing in CO2 reductions. Helping the developing world in africa and other places to cope with and adjust to climate change this way is the wisest use of resources and time.

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