**4.1 Experimental setup for heat transfer loop test**

It is noted that all of the heat transfer loop tests were carried out under 1 atmospheric pressure. After installation of the heater, the test vessel was evacuated and filled with the working fluid, HFE7100. Additional degassing process was carried out by boiling the liquid pool for 2 hours to remove the dissolved noncondensibles. **Figure 5** illustrated the flow loop utilized to conduct the experiments. A variable

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**Figure 6.**

*Synthesis, Properties, and Characterization of Field's Alloy Nanoparticles and Its Slurry*

speed gear pump was used to supply coolant to the nozzle. A turbine flow meter was used to measure the volume flow rate. A vertically oriented nozzle was located directly above the heater surface. The distance between the nozzle exit and the test surface was fixed at 20 mm using a fine-threaded post-arrangement. The nozzle heater assembly was located in a chamber which also acts as the coolant reservoir.

**Figure 6A** illustrated the test chamber and **Figure 6B** showed our measured relationship between chamber pressure and saturation temperature of HFE7100.

*Illustrated scheme of test chamber (A) temperature vs. pressure of HFE7100 (B) and heater (C).*

*DOI: http://dx.doi.org/10.5772/intechopen.84224*

**4.2 Test chamber and heaters**

**Figure 5.** *Schematic diagram of the heat transfer loop test.*

*Synthesis, Properties, and Characterization of Field's Alloy Nanoparticles and Its Slurry DOI: http://dx.doi.org/10.5772/intechopen.84224*

speed gear pump was used to supply coolant to the nozzle. A turbine flow meter was used to measure the volume flow rate. A vertically oriented nozzle was located directly above the heater surface. The distance between the nozzle exit and the test surface was fixed at 20 mm using a fine-threaded post-arrangement. The nozzle heater assembly was located in a chamber which also acts as the coolant reservoir.
