Final answer:
The nozzle pressure for a thermo gel system should be very close to atmospheric pressure, as the water exits into the atmosphere without changes in its conditions. This is because the given pressure is a gauge pressure.
Step-by-step explanation:
The nozzle pressure for a thermo gel system should be very close to atmospheric pressure, as the water exits into the atmosphere without changes in its conditions. This is because the given pressure is a gauge pressure. A gauge pressure measures the pressure relative to atmospheric pressure.