ZEMCH 2015 - International Conference Proceedings | Page 689

In order for the energy balance, the energy rejection to the cooling water stream is given by:
(8)

The temperature of the exiting cooling water stream can be calculated using:
(9)

The COP is defined as shown below:
(10)

Main parameters are shown below:
• Rated capacity = 18 kW;
• Rated COP = 0.75.
Wet cooling tower (Type 51).
• Fan power at maximum flow = 43 kW;
• Maximum cell flow rate = 2.08 m3/s;
• Minimum cell flow rate = 0.52 m3/s.
Circulation pumps (Type 3).
Cooling coil (Type 508).
Figure 3.1 shows the final model simulated in TRNSYS simulation studio with all required Types
and links.

Figure 3.1 TRNSYS Simulation Studio model

Dynamic simulation of a solar cooling HVAC system with nanofluid

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