Research Article
Performance Modelling of Dual Air/Water Collector in Solar Water and Space Heating Application
Table 4
Solar domestic hot water system parameters and operating conditions for given alternatives (RS, V1, V2, and V3).
| Parameter | Description |
| Collector orientation | South, 45° (based in the roof slope) | Collector area | Stockholm and Prague: 4.8 m2; Milan: 3.2 m2 | Collector mass flow rate | 50 l/h·m2 | Heat transfer medium | Propylene glycol | Pump control | Pump switching on/off temperature difference collector-storage 8 K/2 K | Piping | Supply and return pipes are located in the internal and external environments: 10 m each, DN 16 with 25 mm thermal insulation () | Heat exchanger | Smooth tube heat exchanger with (±15%) for 42°C/40°C (inlet temperature/tank storage temperature) | Tank storage | Volume: 200 l; heat loss: 1.4 kWh/day; height/diameter ratio: 2.5 |
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