Abstract
Thermoeconomics is defined as attaching monetary values to heat exchanger conductances of a given plant. In this study, optimum allocation of heat transfer inventory for heat exchangers in a refrigeration system with specified power input or cooling capacity, and for a heat pump with specified heating capacity is investigated. The ratio of hot- to cold-end conductance unit cost ratio, G, was considered in the analysis as an additional parameter of considerable importance to the designer. A closed-form expression is given in terms of unit cost of conductances of both the heat exchangers. The results show a strong dependence of the total cost on the absolute temperature ratios as well as the hot-to the cold-end conductance cost ratio. It is demonstrated in the illustrative example that for G = 0.1, the conductance of the hot-end heat exchanger is about three times the cold-end heat exchanger.
| Original language | English |
|---|---|
| Pages (from-to) | 28-33 |
| Number of pages | 6 |
| Journal | Journal of Energy Resources Technology, Transactions of the ASME |
| Volume | 124 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2002 |
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Energy Engineering and Power Technology
- Mechanical Engineering
- Geochemistry and Petrology