Microtech Engineering

The unit demonstrates the thermal conductivity at various heat inputs and different configurations. The apparatus consists of a heater sandwiched between two identical composite slabs. Water-cooled heat sinks, to steady state heat transfer condition achieved earlier. Provides MS, Al. and Bakelite plates and necessary meters on control panel.

The Unit demonstrates experiments with fins in natural and forced convection and various flow rates, various heat inputs and with fins of different material. Unit consist a pin type fin, heated by a heater, blower draws air over the fin, Thermocouple measures temperature. Fins- Brass, Aluminum and M.S. Control panel with voltmeter, Ammeter T. indicator, Airflow duct with blower

The Unit is to calculate local and over all heat transfer coefficient in forced convection at various airflow rates and various heat flux values. The unit consists of a circular pipe loosing heat by forced convection to air, being forced through it. Constant heat flux is added to pipe by heater provided with input control. Thermocouple to measure a various pipe surface temperature and air inlet and outlet of test section. Control panel with necessary measuring instruments that is voltmeter, Ammeter , T. Indicator.

The unit consists a test plate and a black plate, as a comparator, all the physical properties, dimensions, & temperatures are equal, heat losses from the both plates are same except radiation losses. Input difference will be due to difference in emissivity. Input given through separate dimmer so temp. Of both can be kept equal. Emissivity can determined over a wide range of temperatures

The unit Stefan Boltzmann consists of a hemisphere surrounded by hot water obtained from a water heating tank. Blackend disc is inserted at the center of hemisphere. Heat is transferred into the disc from the hemisphere by radiation & its temperature begins to rise & Stefan Boltzmann constant is determined

The unit is to study the boiling heat transfer. A nichrome wire immersed in water and heated by passing current through it. input to nichrome wire, controlled by dimmer stat. Increasing wire input current increases & at critical heat flux the wire brakes. It is measured on meter. Magnifying glass and lamp to visualise natural connection and pool boiling and separate heater coil in water allows for various water temperature