Keywords: exergy analysis, simple systems, complex systems, sub-devices, devices, size, macrosystems, planetary scale systems, heating, thermal storage, heat pump, applications
Size considerations in applications of exergy analysis
Considerations related to size of application of exergy analysis are examined. Six size categories are considered: sub-device, device, simple system, complex system, macro system, and planetary-scale system. The boundaries between categories are not sharp. It is concluded that many systems investigated with exergy analysis exhibit size-related trends regarding how exergy analysis is performed, and a size categorisation can identify how exergy analysis can most appropriately be applied. The results can help guide exergy users to the most suitable manner of application for a given system and are expected to improve the usability of exergy analysis and increase its application.