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It is not
all that easy to run a guest farm on the fringe of the Namib Desert. The main
problems involve the following:
- Electricity
- Water
- Communication and
- Infrastructure
For those interested we have
summed up the essence of our farm technology.
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Electricity
WITHOUT
electricity we are stuck. Spending every evening by candlelight is too much of
a good thing for most, one doesn't crave a barbecue each and every night
either, nobody wants lukewarm beer and - this is particularly important -
perishable food stocks need to be kept frozen. Therefore a high performance
supply of reliable, trouble-free voltage is indispensable.
Electricity
simply comes from a socket at Rooisand, too, but we have to generate it
ourselves. |
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| Rooisand's supply is ensured by several sources: diesel generators,
solar panels and batteries. The capacity of our inverter is 100 kW. The
batteries are a special type which is normally used in submarines. Their
working life is about 15 years and they have to be serviced
regularly. |
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If
the voltage of the battery system drops below a certain level, two generators
and the solar panels are alternately activated to charge the
batteries.
The two diesel
generators produce 50 and 150 kW respectively, for which they use an average of
5000 litres of fuel per month. The generators are soundproofed so well that
they practically cannot be heard in the farm's guest area. |
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An
inverter transforms the DC voltage of the battery system into 220 Volt/50Hz AC.
The entire power supply system at Rooisand is computer-controlled and can also
be operated and programmed from outside the farm via internet.
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Water
No kidding -
sometimes it even rains at Rooisand. The annual average of a rainy season is
about 150 mm. Rainwater is dammed up in several reservoirs on the farm and
apart from that there is no surface water on the edge of the
desert. |
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Our
water supplies are therefore pumped from ground water reserves (as sparingly as
possible). As the water is extremely hard (water hardness 30-40°) and
destroys pumps, gaskets and pipes within a very short time we operate three
decalcification plants.
Without
water our gardens would look desolate and we would not be able to offer our
guests a refreshing dip in the pool either. |
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The
continuous availability of water at Rooisand attracts a large variety of birds.
Irrigation of the gardens can be programmed as needed and is
computer-controlled as well.
In addition we maintain about 20 watering
places for the game roaming the 12.000 ha grounds of the farm. The water is one
of the reasons for the abundance of game at Rooisand. It is also pumped from
the ground (which also requires electricity). Rooisand therefore boasts several
dozen kilometres of subterraneous water pipes and power lines. |
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Communication A guest farm without the latest communication
technology is quite unthinkable in this day and age. Guests at Rooisand have
telephone (landline and mobile), fax and internet, including email, at their
disposal. Internet access is made possible by Rooisand's dedicated satellite
link. The holiday chalet, which is located slightly out of the way, is also
connected via radio line. For mobile telephony we have our own repeater which
transmits and amplifies signals from Gamsberg.
Our landline network is
cordless and covers the inner farm area within a radius of several hundred
metres. |
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Infrastructur
On a guest farm there are always jobs
that need to be done: repairs, minor building or alterations, and the roads on
the farm have to be maintained. The Rooisand team and farm employees are taking
care of these tasks with the help of a sizeable fleet of construction vehicles,
from tractors and mobile water tank to bucket excavator and a grader for
maintaining and building gravel roads.
Larger construction projects or
extensive repairs are referred to partners in Windhoek and
Swakopmund. |
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And what is absolutely essential for a totally dry and hot
location at the edge of a desert, three hours away from
the closest fire station?
Right! a fire engine! It may seem ridiculously tiny,
but with hydraulic pressure of almost 100 bar it puts out fire in a flash. This
small fire engine is easy to transport and in the event of a bushfire can be
deployed anywhere on the farm.
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