New Kalina cycle promises more efficient cogeneration

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Cogenerat. J.; (United States)

OSTI ID:5762032

The Kalina cycle improves upon the Rankine cycle by adding a distillation phase. This is necessary because the process employs two fluids to make steam-ammonia and water. Use of two fluids is not a new idea, but the Kalina cycle works both components to their optimal extent because of the innovative distillation step. Prior to boiling, an ammonia/water (30/70) solution is raised to an intermediate pressure before entering the distillation subsystem. Here, two streams are created: one, half ammonia, half water; the other, mainly water. The ammonia/based stream is vaporized in the boiler, further raising the pressure, and is expanded through the turbine. It then rejoins the pressurized water stream, where it is condensed-completing the cycle. The Kalina cycle claims higher efficiencies than the Rankine because: less fuel is required to make steam; more pressure is achieved to turn the turbine; less pressure is needed for condensation.

• OSTI ID: 5762032
• Journal Information: Cogenerat. J.; (United States), Journal Name: Cogenerat. J.; (United States) Vol. 1:1; ISSN COGJE
• 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
42 ENGINEERING
425007 -- Engineering-- Power Cycles-- Other-- (1980-)
AMMONIA
BOILING
COGENERATION
CONTROL
DEUS
DISTILLATION
EFFICIENCY
ENERGY EFFICIENCY
ENERGY SYSTEMS
EVAPORATION
FLUIDS
HYDRIDES
HYDROGEN COMPOUNDS
MACHINERY
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
POWER GENERATION
PRESSURE CONTROL
PRESSURIZING
SEPARATION PROCESSES
STEAM
STEAM GENERATION
STEAM TURBINES
THERMODYNAMIC CYCLES
TURBINES
TURBOMACHINERY
VAPOR CONDENSATION
WATER
WORKING FLUIDS