Tri-Generation Cycles, Combined Heat, Power and Cooling (CHPC)

Dear Colleagues,

The thermodynamic community has been engaged for the past 20 years or so in improving the efficiency of thermal systems so as to meet the challenge of reducing greenhouse gas emissions. The concept of CHP is well developed, particularly for large scale operation, but the focus is now shifting to low scale tri-generation cycles for district or community use. Ingenious arrangements of combined cycles have been proposed to make use of the waste heat from the initial cycle to improve the overall efficiency (entropy generation minimization) and to produce fresh water from desalination plants, or to feed pottery kilns or LNG gasification plants (to name but a few). Also, new thermodynamic cycles, such as the COOLCEP-S, Kalina, MATIANT, Brayson, and Goswami have been proposed. Several ORC-based systems using solar power combined with geothermal energy have been analyzed and suitable working fluids have been identified. However, it is notable the Energy Utilization Factor of several real
tri-generation installations is less than that obtained from CHP systems. We are still at the early stage of development of tri-generation cycles. Thus, it is likely that performance will improve through theoretical analysis and the development of new and imaginative systems.

This Special Issue focuses on new developments in tri-generation systems for the purposes of improved thermal efficiency, energy utilization, and minimal environmental impact.

Prof. Dr. Brian Agnew
Guest Editor

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