We offer apparatus for checking
heat transfer through composite walls. We use the latest techniques in designing as well as manufacturing so that the results derived from the heat transfer through composite walls are accurate and consistent. The setup consists of a heater sandwiched between two sets of slabs. Three types of slabs are provided on either sides of heater, which forms a composite structure. A small hand press frame is provided to ensure the perfect contact between the slabs. A variac is provided for varying the input to the heater and digital voltmeter and digital ammeter display the heat input. Heat produced by heater flows axially on both the sides. Temperature sensors are embedded between interfaces of slabs to determine the temperature gradient. The experiment can be conducted at various values of input and calculation can be made accordingly.
objectives - to determine total thermal resistance and thermal conductivity of composite wall
- to plot temperature gradient along composite wall structure
utilities required - electricity supply : I phase, 220 v ac, 2 amp.
- table for set-up support.
- slab assembly arranged symmetrically on both sides of heater
- slab material : slab size
- cast iron : 250 mm dia. & 20 mm thick
- bakelite : 250 mm dia. & 15 mm thick
- press wood : 250 mm dia. & 12 mm thick
- heater : nichrome wire
- temperature sensors :rtd pt-100type (8 nos.)
- control panel :
- digital voltmeter : 0-300 vol.
- digital ammeter : 0-2 amp.
- variac : 0-230v, 2a,
- digital temperature indicator : 0-200 c
- with multi-channel switch
- on/off switch
- mains indicator etc.
- cabinet to accommodate the slab assembly, with front window of glass/acrylic
- the whole set-up is mounted on a powder coated base plate.
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Kunal Chopra (Advanced Technocracy Inc.)
Atico House, 5309, Grain Market, Near B.d Sen. Sec. School, Ambala Cantt, Haryana - 133001
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