Saving energy costs with your condensing turbine generator
- Stothert Engineering Ltd., 155 W. Georgia St., Vancouver, British Columbia V6E 3N7 (CA)
Pulp and paper industry has been using steam turbines to generate power and reduce energy costs for many years. The operation of a condensing turbine in an industrial sewer plant is similar in many respects to the operation of a conventional fossil-fuel-fired utility station. Utility companies focus on converting fuel energy into electricity at the lowest possible cost. Thus they can usually sell power at a price that is lower than the cost of generating condensing power in an industrial plant if this power comes from purchased fuel and the comparison includes the capital costs. In most pulp mills, installing a condensing turbine to reduce energy costs would not be an attractive investment. This paper presents two analyses. The first considers the economics of loading up a turbine condensing section that is normally operating at low flow. This requires no capital investment, and savings depend on the relative costs of purchased fuel and electricity. The second analysis considers utilization of low-grade condenser heat to increase the temperature of process water, thereby reducing purchased energy costs. This requires some capital investment and has practical application in mills where the process water supply is cold during much of the year.
- OSTI ID:
- 7280553
- Journal Information:
- Tappi; (United States), Vol. 74:7; ISSN 0039-8241
- Country of Publication:
- United States
- Language:
- English
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29 ENERGY PLANNING
POLICY AND ECONOMY
COGENERATION
ECONOMICS
ENERGY CONSERVATION
PLANNING
PAPER INDUSTRY
STEAM CONDENSERS
STEAM TURBINES
POWER GENERATION
COST
ENERGY EFFICIENCY
WASTE HEAT UTILIZATION
ENERGY SOURCES
HEAT RECOVERY
INDUSTRIAL PLANTS
CONDENSERS
DEUS
EFFICIENCY
ENERGY RECOVERY
EQUIPMENT
INDUSTRY
MACHINERY
STEAM GENERATION
TURBINES
TURBOMACHINERY
VAPOR CONDENSERS
WASTE PRODUCT UTILIZATION
WOOD PRODUCTS INDUSTRY
320304* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization
290800 - Energy Planning & Policy- Heat Utilization- (1980-)
320305 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
290400 - Energy Planning & Policy- Energy Resources