Posts tagged as generation

Using magnetic slot wedges in hydro generators

  The stator of a hydro generator is usually designed and constructed with open slots. Windings (bars or coils) are inserted into the stator core and then fixed with the non-magnetic slot wedges. Open slots result in slot harmonics which have an effect on some of the characteristics of the generator, such as total harmonic […]

Nuclear reactions

  The recent announcement of the signing of an agreement between the South African government and the Russian nuclear company Rosatom has created a flood of speculation and comment about the future of nuclear power generation in this country. The official announcement describes the deal as an “intergovernmental agreement on strategic partnership and cooperation in […]

Does coal have a future?

  Coal’s future does not look bright in America. Rules already in place and others proposed by the Environmental Protection Agency (EPA) will make it increasingly difficult to build new coal-fired power plants unless they come with carbon capture and storage (CCS) technology, currently an expensive and technically challenging proposition. Europe, where coal has enjoyed […]

Gas to electric power generation potential

  Gas power generation (GPG) has increased significantly in the past few years , with gas overtaking coal in some countries. GPG offers greater efficiency and lower CO2 emissions than coal, as well as other operational advantages. The shale gas potential in South Africa as well as natural gas discoveries in southern Africa have increased […]

Designing a high pressure feed water heater

  In a power generation process, the heat generated in the boiler can be used for heating purposes in other parts of the power plant in order to improve overall efficiency. A wide range of heat exchangers are used in power stations, some of which are feed water heaters, which are used to raise the […]

Power to grow sub-Saharan Africa’s economy

  While achieving a buoyant economic climate is a feat in itself, the real challenge lies in staying afloat. To sustain the economic optimism that Africa is now enjoying, it is imperative that governments, particularly in sub-Saharan Africa, address the critical issue of chronic power shortage, which hampers the development of various industries in the […]

Independent power producers in South Africa

by Doug Kuni, South African Independent Power Producers Association (SAIPPA) Since 2005 when looming power shortages were predicted, IPPs have been assessing opportunities in RSA simply because the market potential presented itself: Eskom was late placing orders for new build and economic growth projections suggested that we would need new power before Eskom could put […]