Technical and economic analysis of steam-injected gas-turbine cogeneration

Conference · Tue Jan 01 04:00:00 EST 1985 · AIP Conf. Proc.; (United States)

OSTI ID:6451076

Larson, E D; Williams, R H

Industrial cogeneration is gaining popularity as an energy and money saving alternative to separate steam and electricity generation. Among cogeneration technologies, gas-turbine systems are attractive largely because of their lower capital cost and high thermodynamic efficiency. However, at industrial plants where steam and electricity loads vary daily, seasonally, or unpredictably, the economics of conventional gas turbines are often unfavorable due to low capacity utilization. Steam-injected gas-turbine cogeneration overcomes the part-load problem by providing for excess steam to be injected back into the turbine to raise electrical output and generating efficiency. Under provisions of the Public Utilities Regulatory Policies Act, any excess electricity can be sold to the local grid at the prevailing avoided cost of electricity. Steam-injected gas-turbine cogeneration can result in a consistently high rate of return on investment over a wide range of variation in process steam loads. Moreover, this technology can also give rise to greater annual electricity production and fuel savings per unit of process steam generated, compared to simple-cycle cogeneration, making the technology attractive form the perspective of society, as well as that of the user. Steam-injected gas-turbines may soon find applications in electric utility base-load generation. 39 references, 13 figures, 2 tables.

• Research Organization: Princeton Univ., NJ
• OSTI ID: 6451076
• Report Number(s): CONF-850414-
• Conference Information: Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 135
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
COGENERATION
DEUS
ECONOMIC ANALYSIS
ECONOMICS
ENERGY SYSTEMS
FLUID INJECTION
GAS TURBINES
INDUSTRY
MACHINERY
POWER GENERATION
STEAM GENERATION
STEAM INJECTION
TECHNOLOGY ASSESSMENT
TURBINES
TURBOMACHINERY