Thermo‐economic analysis of a hybrid ejector refrigerating system based on a low grade heat source
| Autor: | G. Lillo, L. Viscito, Alfonso William Mauro, R. Trinchieri, Rita Mastrullo |
|---|---|
| Přispěvatelé: | Lillo, G., Mastrullo, R., Mauro, A. W., Trinchieri, R., Viscito, L., Lucaviscito |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Control and Optimization
Thermo-economic analysi 020209 energy Cooling load Energy Engineering and Power Technology thermo-economic analysis 02 engineering and technology Ejector Thermo-economic analysis Waste heat recovery lcsh:Technology Waste heat recovery unit 020401 chemical engineering Waste heat Chilled water Heat exchanger 0202 electrical engineering electronic engineering information engineering 0204 chemical engineering Electrical and Electronic Engineering Process engineering Engineering (miscellaneous) Renewable Energy Sustainability and the Environment business.industry lcsh:T ejector waste heat recovery Refrigeration Air conditioning Heat transfer Environmental science business Energy (miscellaneous) |
| Zdroj: | Energies; Volume 13; Issue 3; Pages: 562 Energies, Vol 13, Iss 3, p 562 (2020) |
| Popis: | The rising of the global energy demand requires the use of alternative energy conversion systems employing renewable sources. In the refrigeration and air conditioning fields, heat driven ejector systems represent a promising way to produce the cooling effect by using available low-grade temperature sources. In this paper, a thermo-economic analysis of a waste heat recovery hybrid ejector cycle (WHRHEC) was carried out. A thermodynamic model was firstly developed to simulate a WHRHEC able to obtain chilled water with a cooling load of 20 kW, by varying the working fluids and the pinch point values in the heat exchangers. Specific single- and two-phase heat transfer correlations were used to estimate the heat transfer surface and therefore the investment costs. The operative ranges that provide a reasonable compromise between the set-up costs and the cycle performances were then defined and compared to the current waste heat-driven technologies, such as absorption chillers and organic Rankine cycles (ORCs) coupled with vapor compression cycles (VCCs). The last part of the paper presents an economic analysis providing the map of the design (plant size) and contingent (specific cost of energy, waste heat availability) variables that lead to the economic convenience of a WHRHEC system when integrated to a conventional VCC plant. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|