Tag Archives: Solar Thermal

Feasibility of Aquaculture Plant Energy Design

Grey Green conducted a feasibility study looking at various designs for a renewable energy solution for a containerized fish farm for Philippi Business Place. This include pre-heating of water to correct temperatures as well as providing power for the pumps and blowers in the system. It was hybrid solar thermal and solar PV solution and also include some sustainable water treatment options.

Solar Thermal Modelling

Sustainable and energy efficient ablution facility for informal settlements

An ablution block is to be built in the informal settlement of Joe Slovo in an attempt to provide the local community with safe, clean and reliable access to sanitation. This will ensure that the community’s basic needs are met, employment is created through managing the facility and energy dependency is limited. The project also aims to ensure that the relevant stakeholders (NGOs, local government and communities) develop a better understanding of new technology and how it can support financial and environmental sustainability in Joe Slovo and elsewhere in South Africa.

The ablution block will draw from experiences in India and Zimbabwe, where the community there are directly involved in the operation and management of ablution facilities. The community in Joe Slovo will be expected to financially contribute to cover the costs of running and maintaining it.

Grey Green’s involvement in this project was to develop a model for ablution facilities that is not only socially, but financially and environmentally sustainable. We looked to achieve this by using technology to minimise the energy required to heat water as well as the amount of water used.

Feasibiity of Solar Water Heating for SA Hotels

This intensive study into South Africa’s hotel industry was carried out to assess how energy was being used and to determine if solar water heating was an technically and economically feasible option. This study included a very detailed analysis of electricity consumption data from 16 local hotels, as well as a comprehensive case study at one hotel. A highly detailed model was created to assess the technical and economic feasibility of solar water heating systems to supplement hot water production in the hotel industry.

Feasibility of Solar Thermal Collectors to Supply Industrial Process Heat

This was a similar study to the water heating study however this was focuses on the feasibility of providing process heat for the food and beverage industry. The focus of this study was to establish the potential for solar thermal energy in the Western Cape food and beverage industry. This was a two part study – the first was establishing the potential size of the energy consumption in this sector, on a provincial level, and estimating with reasonable assumptions what quantity could be supplied by solar energy. The second was to model solar water heating systems, using actual processes used in three local manufacturing plants, to establish the cost at which the various solar water heating technologies could be implemented at and how much energy these systems could supply.