An innovative heat exchange device has been recently proposed, which employs an intermediate solid medium to transfer heat from a gas flow at low pressure and high temperature to another gas flow at higher pressure but lower temperature, with negligible pressure losses. In this paper, a key component of this innovative heat exchanger is analyzed in deep, namely the pressurization device responsible for the particles transit between the two separate environments. The operation of the proposed pressurization system is described in detail and then modeled as a zero-dimensional time-dependent system to analyze the influence of the related mass and energy losses onto the heat exchanger efficiency. An experimental test rig reproducing the pressurization tank has been also set up: the data collected at different operating conditions confirmed the reliability of the analytical model and the negligible energy losses occurring in the pressurization process.
|Titolo:||Towards the development of an efficient immersed particle heat exchanger: Particles transfer from low to high pressure|
|Data di pubblicazione:||2012|
|Nome del convegno:||25th International Conference on Efficiency, Cost, Optimization and Simulation of Energy Conversion Systems and Processes, ECOS 2012|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|