LIST OF COMPLETED PROJECTS
CRSES has a team of competent engineers and project managers who can assist clients with on- and off-grid renewable energy solutions. The dynamic group includes engineering expertise in the following disciplines: Mechanical, Mechatronic, Electrical, Process and Civil. The Centre is also well positioned to assemble expertise from the broader University community and private industry to participate in multidisciplinary projects. The past projects are listed under each year below:
RENEWABLE ENERGY STUDY FOR ROMAN BAY SEA FARM
Client: Roman Bay Sea Farm
Scope: The Centre was contracted to complete an energy audit of the farm and suggest suitable measures in order to reduce their dependency on electricity as well as realise appropriate savings through the use of renewable energy.
Main Conclusions: Various projects at Roman Bay Sea Farm have been identified that can reduce the usage of electricity as well as the use of renewable energy. These include:
- Micro hydro using the returning seawater
- Solar water heating for the hatchery
- Heat Pumps for the hatchery
- Alternative pumping schedules
- Energy efficient motors for pumps
Continuation: The farm was redesigned bearing the hydro potential in mind, a follow up study will be the feasibility for hydro power to reduce pumping costs.
RENEWABLE ENERGY STUDY FOR THE MEERKAT RADIO TELESCOPE
Client: South African SKA Project Office (SASPO) based in the National Research Foundation (NRF).
Scope: The purpose of this study was to assess the feasibility to provide some, or all, of the electrical power required for the installation of the 87 radio telescope from solar power. Both solar thermal power generation and electricity from photovoltaic systems were evaluated.
Continuation: This study resulted in a follow-up project in 2009.
STUDY OF PROPOSED ELECTRICITY GENERATION FROM BIOMASS SPIER ESTATE
Client: The Spier Group
Scope: A study that investigated the viability of generating electricity from biomass for a proposed medium to high income housing development on the south bank of the Eerste river at the Spier Estate, close to Stellenbosch. The aim of the proposed installation was to be independent of the national utility service provider, Eskom.
Main Conclusions: From 200 ha of land, the annual biomass production is estimated to be 5400 tonnes of freshly harvested biomass (80% moisture content) or 3 540 tonnes of biomass dried to the required minimum moisture content of 18%. From this biomass, 8 415 kWh of electricity could be generated daily. This is slightly less than the 8 891 kWh requirement for 1 200 housing units, resulting in either an increase land requirement of 211 ha, or reducing the amount of housing units to 1 135.
A financial model calculated the electricity cost R 0.89/kWh. This compares favourably with electricity costs from other alternative resources. To generate further revenue, it is possible to utilize waste heat from the gasifier, which will reduce the electricity cost. If this project is registered as a CDM project, electricity prices could be further reduced.
Continuation: A small follow-up project was complete calculating the possibility to power the Spier Hotel from biomass. Up to date no biomass installation has been installed.
Renewable Energy Study in the Agricultural Sector for the Free State Province
Client: CRSES was a sub-contractor for Sebedisana Agricultural Services cc. The main project was for the Department of Agriculture of the Free State Province.
Scope: A study to determine the contribution that solar, wind and hydro derived power can make to the agricultural sector of the Free State Province.
Main Conclusions: The Free State has poor wind resource. It has a very good solar resource that can be utilised through Solar Water Heaters, PV installations and large Solar Thermal Power Stations. The main hydro resource for the Free State is on the Ash River. 7 MW is currently under development in this area.
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