Experimental Setup
Figure illustrates experimental setup.
|
Experimental Setup for Particle Size Measurement and Flammability of HTFs |
The Malvern Analyzer consists of a laser, a receiver or laser light detector, and a computer to convert the laser light intensities into drop size data. A HTF sample is transferred from a storage vessel to the fluid cell, where it is pressurized by nitrogen, heated to the test temperature, and propelled through an orifice. Exiting the orifice under pressure, the fluid spray may break into aerosol drops, which diffract the laser beam and are drawn into a collection chamber to prevent the aerosol from accumulating in the laboratory. Then a vapor/liquid separator removes the spray drops and the fluid drains as bulk liquid, whereas the air and vapor are expelled from the system by an explosion proof blower. High-speed still photography provides visualization of the stream breakup into aerosols and to facilitate analysis of the Malvern laser diffraction data.