Ember coffee mug 2 PCM experimental data Designer10 × Member for 12 years 623 designs 10 groups Big fan of VHDL-AMS https://explore.partquest.com/node/188291 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/188291"></iframe> Title Description <p>This is a model of an Ember coffee mug -- a battery-powered, state-of-the-art beverage container that controls the temperature of your beverage to keep it at the setpoint you specify for a couple of hours.</p><p>See https://ember.com/</p><p>The purpose of this model is to calibrate the phase change material (PCM) that is used in the Ember mug. The following experiments were passive -- the Ember mug was powered off during all of these measurements so that the intrinsic characteristics of the materials could be determined.</p><p>The temperature represented by the node ember_temp_exper is experimental data collected from an actual Ember mug. 350 ml of water at 77.2C was added to the mug and its temperature was measured over several hours.</p><p>The temperature represented by the node insulated_temp_exper is experimental data collected from an ordinary insulated mug of approximately the same size. 400 ml of water at 77.2C was added to this mug and its temperature was measured over several hours.</p><p>The difference between these two temperatures shows the effect of the PCM used in the Ember mug. The energy required to melt the PCM causes the Ember mug temperature to drop much more quickly than the ordinary insulated mug. As the water in each cools, however, the PCM energy is recovered, as the temperature drops below the melting point, causing the water temperature in the Ember mug to drop more slowly than the ordinary insulated mug.</p><p>The thermal network shown here models the thermal characteristics of the Ember mug. This includes the thermal mass for the water, with its Cp, two PCM blocks, thermal impedances, and the ambient temperature. The thermal capacitor is used only the establish the initial conditions at the beginning of the simulation, but could also be used to model the thermal capacitance of the mug body.</p><p>Two PCMs are used, since the experimental data appears to show two distinct inflection points in the temperature decay.</p><p>further work:</p><p>The insulated mug contained 400ml of water, while the Ember contained only 350ml (its max capacity). It would be more meaningful to compare the results of an additional experiment where 350ml of water is used in the insulated mug.</p> About text formats Tags thermalemberPCM Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
