(The fourth quarter 1998 issue of District
Energy featured an article “Tropical
Malaysia Taps District Cooling,” which
detailed the new system.) The second
plant at Kuala Lumpur International
Airport (KLIA), a major Asian aviation
hub about 50 km ( 31 miles) outside the
city (fig. 1), started operation in 1998.
The configuration of these plants is as
follows:
Two 20 MW gas turbine generators
In 1998, GDCSB also built and
undertook initial operation of two
cogenerated gas district cooling plants
in Putrajaya, the new federal administrative capital of Malaysia still under construction south of Kuala Lumpur. These
plants have the following configuration:
Kuala Lumpur City Centre
Three 5,000-ton electrical centrifugal
chillers (which run on electricity
from the grid)
Three 5,000-ton steam turbine centrifugal chillers
Putrajaya Plant 1
Two 3. 25 MW gas turbine generators
Two 7-ton/hr heat recovery steam
generators
Five 2,500-ton steam absorption
chillers
Six 1,200-ton direct-fired chillers
Two 1,250-ton electrical centrifugal
Figure 1. Gas District Cooling System Schematic for the Kuala Lumpur International
Airport Plant.
TNB ELECTRICAL
SUBSTATION
KLIA CORE &
PRIVATE FACILITIES
GDC
ELECTRICAL
In Plant Use
2500 RT x 12 units
STEAM ABSORPTION
CHILLER
Source: Adapted from GDC (Holdings) Sdn. Bhd. (KLIA).
From
TNB
Chilled Water
Supply 7oC
HRSG
AGB
Gen
GT
Gas Fuel
Chilled Water
Return 14oC
Diesel Fuel
Two 47-ton/hr (or 94,000-lb/hr) gas
boilers
Two 4 MW and two 9 MW gas turbine
generators
Four 11,250-ton thermal ice storage
tanks
Three 2,000-ton brine chillers to
charge the thermal ice storage tanks
chillers (which run on electricity
from the grid)
One 9,000-ton thermal energy storage tank
One 15.4-ton/hr and two 27.5-ton/hr
steam auxiliary gas boilers
One 48,000-ton thermal ice storage tank
Three 2,000-ton brine chillers to
charge the thermal ice storage tank
Two 1,350-ton direct-fired chillers
[The two standalone district cooling
plants were also built in Putrajaya,
located in the Foreign Ministry office
complex and Putrajaya International
Convention Center (PICC). The two
plants started operations in 2001 and
2003, respectively. The combined thermal (steam and electric) capacities of
these two plants are 21,200 tons and
3,880 tons, respectively.]
These first four cogenerated gas
district cooling plants (as well as the
two standalone operations) are all located in the Kuala Lumpur area in the central region of Peninsular Malaysia, the
most developed region of the country,
with the best infrastructure. Gas district
cooling and cogeneration systems have
further improved the infrastructure of
this region. This is in line with the
Malaysian government’s efforts to ensure
that the Kuala Lumpur area develops
the best infrastructure.
GDCSB’s fifth gas district cooling and
cogeneration plant, built in 2001, is
located in an entirely different area of
the country, about 250 km (155 miles)
to the northwest of the other four plants.
This plant is on the campus of the
University Technology Petronas, a private
university established in 1997 in the city
of Tronah. Petronas opted to build this
fifth gas district cooling plant at the
university as the campus was located at
the end of power distribution lines in
industrial surroundings; hence, the quality
of the available power was not meeting
the university’s requirements. Petronas’s
goals in establishing this plant were not
only to supply the campus with quality
power and chilled water, but also to build
a facility that would serve as a model of
cogeneration and district cooling technology for the university and surrounding communities. This plant is configured
as follows:
Kuala Lumpur International Airport
Twelve 2,500-ton steam absorption
chillers
Three 1,000-ton electric centrifugal
chillers (run on electricity generated
by the plant’s gas turbine generator)
Two 40-ton/hr heat recovery steam
generators
Two 25-ton/hr and one 40-ton/hr
auxiliary gas boilers
Putrajaya Plant 2
Two 5. 4 MW gas turbine generators
Two 12-ton/hr heat recovery steam
generators
Eleven 2,500-ton steam absorption
chillers
Two 1,250-ton electrical centrifugal
chillers (which run on electricity
from the grid)
University Technology Petronas
Two 1,250-ton steam absorption
chillers
Four 325-ton electrical centrifugal
chillers (which run on electricity
from the grid)
One 10,000-ton thermal energy storage tank
