1. Geothermal heating & cooling
The lounge and dining areas of the retreat accommodations will be heated and cooled with the use of geothermal ground source heat pumps. The grid will be located towards the south of the building (water) but facing magnetic north at a declination angle of 21.56° west from true north. GSHP Heating and cooling has been utilized in Europe and USA for over 25 years.
Only now is South Africa experiencing the energy crises with increases this year alone of 33% in Eskom’s rates. It remains incumbent upon us as responsible people to ensure our entire clientele decrease their carbon footprint and green house gas emissions. The best way to describe a GSHP system is by providing simplistic schematics of the heating and cooling cycles. The cooling cycle acts in the same way as your refrigerator with a compressor, Condenser, Expansion Valve, Evaporator.
The only remarkable difference is the removal of the condenser and the addition of the de-super-heaters. In essence the change of the condenser from air to air to a water to water ground loop increases the efficiency (C.O.P’s) of the system thereby improving energy demand due to the fact that the earth temperatures are stable between15-17°C.
Geothermal Cooling Cycle:
The heating cycle acts in the same way as a heat pump with a compressor, 4-way reverse valve, Condenser, Expansion Valve, Evaporator. The only remarkable difference is the removal of the condenser and the addition of the de-super-heaters. In essence the change of the condenser from air to air to a water to water ground loop increases the efficiency (C.O.P’s) of the system thereby improving energy demand due to the fact that the earth temperatures are stable.
2. Algae sewage plants
The De Angelus Estates will operate the De Angelus Organics division. These sewage plants will fall within the auspices of that division, charging a levy for its sewage-services to the other companies and components of the greater project.
Organic materials sourced at these plants, will be harnessed further in the De Angelus Organics fertilizer and composting ranges. These products will be sold retail at the Nursery, as well as through orders placed with DAE by either AUD farming components, or any other farming or retail concern.
3. Wind turbine units
Various options with regards to the type and capacity of turbines are considered. The area definitely sports enough constant wind to more than meet the requirement.
An area abutting the middle, towards the western boundary of the farm Nolans Volens 6, and the eastern boundary of the farm Geluk, is the most suitable site, in terms of constant wind, for the erection of a wind turbine farm. This farm will be used to generate green electricity for the De Angelus developments. Two possible sites are indicated on the farm Nolans Volens 2, and another within the southern boundary of Geluk.
The farms are also crossed by an Eskom power line, and would be able to hook up and sell surplus electricity. It is estimated that a wind turbine farm could be erected, and would enable contribution to the national grid, annually.
Thus it would more than contribute towards supplying the developments’ needs. Delivery would not only provide De Angelus Estates to be self-sufficient in terms of energy concerns, but will also assist in boosting the country’s’ requirements for more eco-friendly energy.
Wind turbines(20m) in England
Wind turbines(60m) in Denmark
The area north of the Telkom and cell phone towers seems to be a suitable site, in terms of constant wind and accessibility, for the erection of a height restricted, wind turbine farm. This farm will be used to generate green electricity for the De Angelus developments. It is also close enough to an Eskom power line, creating an opportunity to connect to, and sell surplus electricity to the national grid. Attention is given to position, height, bird flight lines etc. as not to disturb the skyline unnecessarily.