PROJECT
IMPACT OF THE SYSTEM ON ELECTRICAL USE
Heat pumps: It uses a small amount of energy to move
heat from one location to another by using the sun's free
heat in collecting and absorbing energy from the outside
air. This energy is then compressed and transferred to
water. The heat pumps work extremely efficiently, because
it simply transfers heat. It is designed to operate between
-15°C and 40°C ambient. As the ambient temperatures
change, the heating output of a heat pump will vary, and
it will take a bit longer to get to temperature. Heat pumps
provide up to 70% savings in domestic water heating costs.
VSD pumps: These can reduce energy consumption
by regulating electric motor speeds to match the
energy demand with the system load. This means that it
matches the actual demand so that it does not need to
work faster than it needs to.
Looking at the energy efficiency or sustainability aspects,
the spokesperson says that the building has been
designed, and will be operated, in an environmentally
sustainable manner. Passive building design techniques
and environmental considerations will ensure a 4-Star
Green Star rating, creating a healthier and more
productive environment.
When asked what makes the system special/unique,
the spokesperson says: “We are using the latest
technologies to include water-saving efficiencies.
By using a rainwater harvesting system, you reduce
your water bill and conserve water at the same time.
The practice of rainwater harvesting is becoming more
prevalent as water costs rise and freshwater resources
become increasingly scarce, whether due to drought,
climate change, or a failing infrastructure. PA
www.plumbingafrica.co.za
43
An aerial view of
construction in the early
days of the Rosebank Link.
Construction work inside the
Rosebank Link.
LIST OF PROFESSIONALS
Owner
Developer
Contractor
Architect / Designer
Quantity surveyor
Project manager
Green building consultant
Consulting Electrical
engineers Mechanical
Wet services
Civil
Fire
Contractors Main building
HVAC&R
Wet services
Redefine Properties
Redefine Properties
WBHO
Paragon Architects
MLC
Betts & Townsend
WSP
CKR Consulting Engineers
Adaptive Resource Engineers
CKR Consulting Engineers
Sutherland Engineers
SFT
WBHO
Blue Hemisphere
Modern Plumbing
September 2018 Volume 24 I Number 7