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SGT5-4000F Steam Production

Steam production [kg/s] 150

145

Saturated

140

204 °C 260 °C

135

130

316 °C

125

371 °C

120

115

427 °C

110

482 °C

105

538 °C

100

95

90

5

15

25

35

45

55 65 75 Steam pressure [bar]

Cogeneration or Combined Heat and Power

General description Owners and operators of industrial and commercial facilities are actively looking for ways to use energy more efficiently. One option is cogeneration, also known as combined heat and power (CHP). Cogeneration/CHP consists of simulta- neous production of electricity and useful heat from the same fuel or energy. The owner of a SGT5-PAC 4000F cogen system can use it to produce their own electricity, produce electricity for sale to others, or use the excess (waste) heat for process steam, hot water heating, space heating and other thermal needs.

The excess heat also can be used to produce steam that can drive a steam turbine-generator to produce additional electricity. A SGT5-PAC 4000F-based cogen system can be designed, with the addition of the appropriate heat recovery boiler

and steam turbine-generator, to use the maximum amount of available energy. The steam turbine can be selected from extraction, condensing or backpressure styles to best match the customer’s pro- cess steam and electricity requirements.

Steam production calculation The figure above shows the typical steam production capability of the SGT5-PAC 4000F for a range of steam pressures and temperatures. The referenced results are for

Base load operation at sea level, 15 °C compressor inlet temperature, 60 % relative humidity of the air and Natural gas fuel.

The heat recovery system chosen has one pressure level, a 8.3 K pinch point, 5.5 K approach temperature and no supplementary firing. Although steam production varies depending on site conditions and gas turbine loading, the figure provides an estimate of what can be achieved with a SGT5-PAC 4000F.

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