Open Access
Table 2
Effect of load variations on ORC performance.
| Parameter | Symbol | 100% | 75% | 50% | Units |
|---|---|---|---|---|---|
| Type of working fluid | R$ | R245fa | R245fa | R245fa | – |
| Source temperature | Tgin | 477 | 407 | 327 | C |
| Source mass flow rate |
|
0.053 | 0.049 | 0.047 | kg/s |
| Refrigerant mass flow rate |
|
0.066 | 0.046 | 0.028 | kg/s |
| Superheater temperature difference | ΔTsup | 30 | 30 | 30 | C |
| Evaporation pressure | Pev | 32.57 | 32.57 | 32.57 | bar |
| Inlet turbine temperature | T3 | 175 | 175 | 175 | C |
| Heat rate input |
|
20.11 | 14.01 | 8.53 | kW |
| Net work | Wnet | 2.427 | 1.692 | 1.03 | kW |
| Thermal efficiency | ηth | 12.07 | 12.07 | 12.07 | % |
| Fuel reduction percentage | FRP | 6.048 | 4.294 | 2.659 | % |
| Lower heating value of fuel | HLV | 43,000 | 43,000 | 43,000 | kJ/kg |
| Net output power of the engine | Peng | 37.7 | 28.27 | 18.85 | kW |
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