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Now a days digital control technology is became more and more useful to run the machines like portable laser cutting and engraving machines that can cut on the different surface contingent upon the power of the laser diode. In this paper the fundamental goal is to design and fabricate the laser cutting and engraving machine which is convenient to controlled by the Arduino CNC. It is accessible and perfect utilization for small and medium scale industries. This model is small, simple to work, cost of manufacturing and to effortlessly transport from one work station to other work station.

Abstract-A phase-change material (PCM) is a substance with a high latent heat storage capacity which on melting and solidifying at a certain temperature, is capable of storing and releasing large amounts of energy. Various PCM like Paraffin wax, sodium acetate tri-hydrate and phenolphthalein are considered which are used to absorb heat from the coolant water from the engine. The conduction and convection criterion of heat transfer enable the PCM to store this heat as latent heat. The amount of convection and temperature change brought about due to the heat flux has been simulated and studied in detail using GAMBIT and FLUENT .Index Terms-Latent Heat storage capacity, phase change materials, paraffin wax, sodium acetate tri-hydrate, phenolphthalein

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