THE ROCKS HEAT EXCHANGE - Engineers Australia · PDF file · 2017-05-19THE ROCKS...
Transcript of THE ROCKS HEAT EXCHANGE - Engineers Australia · PDF file · 2017-05-19THE ROCKS...
THE ROCKS HEAT EXCHANGE PRESENTATION BY BRIAN COCK
MANAGER, FACILITIES
ASSET MANAGEMENT SERVICES
AUGUST 2012
What is a heat exchange
system?
It is a heat transfer system
Heat is transferred from one fluid to another
In the case of The Rocks (closed loop) heat exchange system will
allow multiple buildings air conditioning and refrigeration plant to
transfer heat to and from Sydney Harbour
Sydney Harbour heat exchange
systems
Sydney Harbour has been utilised for heat exchange systems for
more than a century predominantly for electricity power generation
Power stations included: Ultimo (1902), Balmain (1903), Pyrmont
(1904) and White Bay (1912)
The Rocks power station constructed (1907) – never commissioned
Emergence of commercial air conditioning in the 1960’s introduced
additional smaller open seawater systems
Open sea water cooled air
conditioned buildings
Sydney Opera House – Circular Quay
AMP Building – Alfred Street – Circular Quay
Park Hyatt Hotel – Circular Quay
Museum of Contemporary Art – Circular Quay
Sydney Convention & Exhibition Centre – Darling
Harbour
Power House Museum – Darling Harbour
King Street Wharf – Darling Harbour
Star Casino – Pyrmont Bay
Workplace 6 – Pyrmont Bay
Barangaroo (under construction) – Darling
Harbour
Closed sea water cooled air
conditioned buildings
Closed loop / hydrothermal seawater systems are rare in Australia
and around the world.
Sydney sites include Balmain Water Police (200kW) and Wharf 11
Woolloomooloo (500kW)
The proposed Rocks Heat Exchange will have a capacity of (7MW)
and is likely to be the largest of its type in the world.
Heat rejection options
Cooling towers
Geothermal
Sea water open
system
Sea water / Hydrothermal
closed system
Air Cooled
Open system challenges
High maintenance costs – continual marine growth
Complex and difficult facility maintenance routine
Increasing Environmental Protection Authority (EPA) compliance
requirements
A changing marine ecology
Reduced energy savings
COMPRESSOR
PLANT ROOM
BUILDING
NO. 1
MAIN PLANT ROOM
SYDNEY HARBOUR
Heat rejection modules
NO. 2 NO. 3 NO. 4
CLOSED LOOP DISTRICT
HEAT EXCHANGE SYSTEM
Sea water closed system
overview
minimised lifecycle costs
optimised adaptive re-use
KEY BENEFITS
less power, water, chemicals
no legionella risk
less rooftop clutter
minimal heritage impact
no separate heating system
‘connect and forget’
seamless staged refurbishment
7 megawatt capacity
closed loop system
PROJECT OUTCOMES
Air conditioning and refrigeration
$25k annual maintenance costs
$6.27m budget
56% annual energy savings
35.5Ml annual water savings