An efficient cooling technique for discontinuous Micro-Engines using Microencapsulated phase change materials

Author’s Name : Khadrawi A F |Balabel A | Ali Azaed

Volume 01 Issue 02  Year 2014  ISSN No:  2349-3860  Page no: 1-4

Abstract:

Phase change materials (PCMs) have the capability of storing heat (latent heat storage units) and phase transition point to the environment of the operating temperature. The purpose for which they are designed is to prevent heat loss by absorption or release thereof. In the present work an efficient cooling technique for micro-engines that operate intermittently, or discontinuously, has been presented and investigated analytically. It is found that the new phase-change cooling technique is more appropriate for cooling the micro engines that work for small discontinuous periods of time. Operational time that is defined as the time required by the phase-change solid material to be completely melted and converted to liquid is investigated in this study.  This means that the engine is able to operate during this operational time by relying on the phase-change new cooling approach.  It is found that the cooling operational time increases as both the melting temperature and   the enthalpy of melting increase.

Keywords:

cooling; discontinuous operation; micro-engine; phase change material.