Alex Sanchez Lopez

Alex Sanchez Lopez

Product Design Engineering BSc

ThermoGauge

Liquid Petroleum Gas is a valuable source of energy, used by more than 150,000 people within rural areas in the UK. Being stored within pressurised opaque vessels makes it hard to determine how much liquid is left as fuel and many assumptions are made in determining the liquid level left for cooking or heating. In collaboration with LCR Hallcrest, an opportunity was found to develop a product that lets users know how much liquid is left inside these cylinders. ThermoGauge gives the user an indication of the liquid level remaining through thermo-chromic colour-changing technology. When these cylinders are used, there is a gradient of temperature profiles on the outer surface of the cylinder with a demarcation point where the liquid and gas interfere. Through testing and synthesising results of these temperature profiles, an appropriate thermo-chromic was chosen that could determine where this interference lies to give a visual cue of the amount of liquid and gas left inside an LPG cylinder. ThermoGauge is able to respond to these temperature differences almost instantaneously and let the user know how much energy they have.