Technical Assessment of the Combined Heat and Power Plant at the Oregon Institute of Technology, Klamath Falls, Oregon

摘要

The recently installed combined heat-power (CHP) plant at the Oregon Institute of Technology is described and its performance analyzed using thermodynamic First and Second Law principles based on energy and exergy, respectively. Characteristics of the three production and two injection wells are presented. Real-time plant data for the binary cycle and heating system are shown in a screen-shot from the control panel and used to carry out a system analysis. Both the power cycle by itself and the whole CHP system are assessed. The R245fa working-fluid power cycle is shown to have a thermal efficiency of 8.2% and a utilization efficiency of 33.5% relative to the exergy change of the geofluid, and the CHP system has an efficiency of 83.6%, using geofluid pumped to the plant at 196.9 ℉.