| Title | Economic Performance of Geothermal Power Plants Using the Kalina Cycle Technology |
|---|---|
| Authors | Leibowitz, H. M.; Markus, D. W. |
| Year | 1990 |
| Conference | Geothermal Resources Council Transactions |
| Keywords | Power Generation; Economics; Kalina Cycle; Binary Systems; Rankine Cycle; Working Fluid; Thermodynamics; Efficiency; Ammonia; Water Mixture; Capital Cost; Rate of Return; Cash Flow; Interest Coverage; Cost Per KW |
| Abstract | The economics of geothermal power using liquid dominated resources in the 300°F to 350°F (149°C to 177°C) range is substantially improved using an ammonia/water Kalina cycle, designated as System 12 (KCS12). The best features of flash steam systems and the binary Rankine cycle are combined to produce a plant design that is 40 percent less expensive per unit of installed capacity than current commercial binary plants. A plant design is presented for a 30 MW unit. Plant costs are developed using vendor quotations and factored estimates for construction and installation. Based on the unit costs of capacity, i.e. $/kw, project returns to the equity investor are presented. |