District Energy - 2008 Third Quarter

Figure 2. Monthly Production of Electricity and Chilled Water at Kuala Lumpur

International Airport Plant, 2007.

30

₂₅RTh kWh

Source: Adapted from GDC (Holdings) Sdn. Bhd.

20

Millions

15

10

5

0

Jan Feb Mar Apr May

Two 12-ton/hr heat recovery steam generators

One 6-ton/hr steam auxiliary gas boiler

Two 4. 2 MW gas turbine generators Note that, at present, there are no regulations on gas sulfur emissions in Malaysia. Currently, the gas district cooling plants are considered Independent Power Producers and are regulated by the Energy Commission of Malaysia.

For all five of these cogenerated gas district cooling plants, GDCSB was the main plant developer and initial operations and maintenance company. However, plant ownership, operating parameters and tariff rates vary from system to system (see table 1).

Jun Jul Aug Sep Oct Nov Dec 2007

Plant Development
and Operations

The Kuala Lumpur City Centre plant was developed to supply the chilled-water requirements of the various city center customers. The center’s commercial buildings, including hotels, were planned and developed at the same time as the gas district cooling plant. In total, the complex covers an estimated of 604,000 sq m ( 6. 5 million sq ft) of space consisting of offices, a retail center, hotel and a mosque. The Kuala Lumpur City Centre plant started operation in 1997.

The Kuala Lumpur International Airport plant, which started operation in 1998, supplies electricity and chilled water to the main terminal building, the

administrative building, contact pier, air-traffic control tower, satellite building, engineering and customs complex and other privatized facilities at the airport with a total floor area of 605,320 sq m ( 6. 52 million sq ft). The plant’s average monthly electricity and chilled-water production is shown in figure 2. Last year, the monthly demand for electricity varied from a minimum of 12. 35 x 10³MWh for June to a maximum of 25. 27 x 10³MWh for March. Chilled-water pro-duction varied from 8.01 million tons during September to 10. 21 million tons during May.

While both the city center and airport plants were built to serve the commercial sector, the Putrajaya cogenerated gas district cooling plants serve slightly different objectives. Putrajaya is a new mixed development, consisting mainly of federal government ministry offices as well as residential and shopping complexes. Putrajaya is considered a showpiece of the federal government, with buildings designed and constructed to incorporate the most modern facilities and infrastructure. Those buildings include the prime minister’s secretariat, the Malaysian king’s palace, federal ministries offices, the national convention center, central mosque, five-star hotels,