*3.2. Secondary Circuit of the Stirling Engine: Cooling Circuit (Working Fluid—Water)*

The secondary circuit of the Stirling engine not only performs the cooling of the Stirling engine, but also supplies the thermal agent, being able to generate a power of up to 25 kW, identifying the following main blocks of equipment:


Figure 8 presents the block diagram of the secondary circuit of the Stirling engine: cooling circuit (working fluid—water):

**Figure 8.** Secondary circuit of the Stirling engine, water-cooling. BT11 and BT12: temperature sensors.
