Abstract: The present building energy consumption can be reduced by replacing the air conditioning system with Thermal Energy Storage (TES) system. In this present work, a semi-analytical model is applied to analyze the shell and tube type TES system for air cooling-heating application. The laminar forced convection heat transfer phenomena in between phase change material (PCM) inside a shell and air inside the tube are studied. The heptadecane PCM with 22°C melting temperature is used for this TES system. The melting front propagation is also analyzed. The outlet air temperatures are found 24°C to 26°C for the 32°C inlet air temperature.

• Publication Date: 14-Jul-2013
• DOI: 10.15224/978-981-07-7021-1-41
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Abstract: The known gyroscope theory based on principle of the rate change in the angular momentum of a spinning rotor. Practice demonstrates this mathematical model cannot describe other gyroscope effects and shows that there are other unsolved problems, which is spawned steady myth of the gyroscope mystery. These phenomena attract new researchers to solve gyroscope problems. The nature of gyroscope effects is more complex than represented in publications and known mathematical models do not match the actual motions and forces of the gyroscope effects. Latest studies of forces that involved in motions of a gyroscope demonstrate that there are four dynamical components, which act simultaneously and interrelated. The gyroscope with the external torque applied is experienced the resistance torque generated by the centrifugal and Coriolis forces and the precession torque generated by the inertial forces and the rate change of the angular momentum of the spinning rotor. These four dynamical componen

• Publication Date: 21-Dec-2014
• DOI: 10.15224/978-1-63248-037-8-85
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