critical heat flux apparatus

The present setup is designed to study the critical heat flux of a given nichrome wire. The setup consists of temperature controlled water bath with controller. Temperature of the water bath can be varied from ambient to 80_ to achieve different environment for nichrome wire. Test heater wire is placed in the bath & voltage is varied by variac provided. The system is complete with digital temperature controller, voltmeter, am-merter & voltage control facility.

Learning Objectives/Experiments:

·        To determine the critical heat flux of given wire.

·        To study the pool boiling phenomenon up to critical heat flux point.

Utilities required:-

·        Electricity Supply: 1 Phase, 220 V AC, 50 Hz,5 Amp.

·        Bench Are a Required : 1m x 0.75m

·        Nichrome wire: 0.1219 mm ( 40swg)

·        Floor drain

·        Water supply : initial fill

Technical Specifications:

• Boiling chamber: rectangular chamber (material SS) with transparent window for observation of test heater.
• Test heater: with holding arrangement for quick change of wire.

Control Panel:

·        Digital Temp Controller: 0-199.9°c, (for Water Bath)

·        Digital Temp Indicator: 0-199.9°c,

·        Temperature Sensors: Rtd Pt-100 Type

·        Ammeter : 0-2 Amp

·        Dimmerstat : 0-4 A , 230 V

·        Standard Make On/off Switch, Mains Indicator Etc.

Scope of Delivery:

·        1 Self Contained "critical heat flux " Apparatus

·        1 Instruction Manual consisting of experimental procedures, block diagram etc.