Heat Transfer Lab Equipment

The apparatus consists of a metal pipe with two layers of insulation. An electric heating coil wound on a silica rod is placed at the center. The ends are thickly insulated to prevent heat loss so that heat flows only in a radial direction. Three thermocouples each are placed at different radii to measure the temperature distribution within the cylinder.

The experimental set up consists of two circular brass plates of identical dimensions. One of the plates is made black by applying a thick layer of lamp black while the other plate whose emissivity is to be measured is a gray body. Heating coils are provided at the bottom of the plates. The plates are mounted on asbestos cement sheet and kept in an enclosure to provide undisturbed natural convection condition. Three thermocouples are mounted on each plate to measure the average temperature. One thermocouple is in the chamber to measure the ambient temperature or chamber air temperature. The heat input can be varied with the help of variac for both the plates , that can be measured using digital volt and ammeter.

SPECIFICATIONS:

Specimen material : Brass Specimen Size : f 150 mm, 6 mm thickness ( gray & black body ) Voltmeter : Digital type, 0-300v Ammeter : Digital type, 0-3 amps

Dimmerstat : 0-240 V, 2 amps

Temperature Indicator : Digital type, 0-300°C, K type

Thermocouple Used : 7 nos.

Heater : Sand witched type Nichrome heater,400 W

• Item Code: H-7

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Enriched with vast industrial experience in this domain we are involved in offering supreme quality range of Metal Bar Apparatus to our clients. This Metal Bar Apparatus is made with fine quality of material and widely appreciated for its rugged construction and easy installation. Our clients can avail this product in different range and specification as per the demand of our clients.

 

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• Item Code: H-15

SYSTEM COMPONENTS:

01.       Hermetically sealed compressor – 1/3 HP cap.

02.       Air Cooled condenser –1/3HP, size: 12” x 13” x 2 rows

03.       Fan motor with blade, 1/83 HP

04.       Expansion Device –Capillary

05.       Hand shut off valves-1/4”

06.       Filter Drier

07.       Energy meter: 2.5 – 5 amps

08.       Pressure/compound gauges

09.       Digital Voltmeter 0-300° V AC

10.       Digital Ammeter 0 - 5A AC

11.       Digital Temperature Indicator  - 50 to + 150°C

12.       Thermocouple selector switch

13.       Thermocouples – k type (Cr/Al)

14.       Mains switch

15.       Refrigerant R-134a

16.       Evaporator coil placed in a chiller

17.       Density of refrigerant (134a) =1374 kg/m³

 

 

 

 

To meet the variegated demands of customers we are engaged in providing superb quality range of Heat Pipe Demonstrator. This Heat Pipe Demonstrator is available in different range and specifications. Our product range is extensively used for testing electronic connections and circuits. We are offering this product at pocket friendly price.

 

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We are counted as prominent name in this domain involved in offering supreme quality range of Pin Fin Apparatus to our clients. This Pin Fin Apparatus is made with fine quality of material and liable to perform its working for long period of time. These products are tested on different quality parameter before dispatching to the market.

 

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To determine the value of heat transfer co-efficient under forced condition and to find a) Theoretical values of temperatures along the length of fin

b) Effectiveness and efficiency of the Pin-Fin for insulated and boundary condition.

SPECIFICATIONS:

Length of the fin, ‘L’ = 150mm

Diameter of the fin, ‘d_f’ = 12mm

Thermal conductivity of fin material (brass) = 110.7 W/m²–K

Diameter of the orifice, ‘d_o’ = 20 mm

Width of the duct, ‘W’ = 150 mm

Breadth of the duct, ‘B’ = 100 mm

Coefficient of discharge of the orifice, ‘C_d’ = 0.62

Density of manometric fluid (mercury) = 13.6 x 1000 kg/m³

 

The apparatus consists of a blower to supply air. The air from the blower passes through a flow passage, heater and then to the test section. Air flow is measured by an orifice meter placed near the test section. A heater placed around the tube heats the air, heat input is controlled by a dimmerstat. Temperature of the air at inlet and at outlet is measured using thermocouples. The surface temperature of the tube wall is measured at different sections using thermocouples embedded in the walls. Test section is enclosed in a asbestos rope where the circulation of rope is avoid the heat loss to out side.

Specimen : Copper Tube

Size of the Specimen : I.D. 25mm x 400mm long

Heater : Externally heated, Nichrome wire Band Heater

Ammeter : Digital type,0-20amps, AC

Voltmeter : Digital type, 0-300volts, AC

Dimmerstat for heating Coil : 0-230v, 2amps

Thermocouple Used : 7 nos.

Centrifugal Blower : Single Phase 230v, 50 hz, 13000rpm

Manometer : U-tube with mercury as working fluid

Orifice diameter, ‘d_o’ : 20 mm

G. I pipe diameter, ‘d_p’ : 40 mm

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