Purchase of Thrmal Enginering Lab Equipments for Mechanical Department

Specific Heat of water apparatus: Calorimeter Vessel: ⮚Polished nickel-plated copper or pure copper. ⮚Dimensions: 75 mm height 50 mm diameter. Liquid Capacity: ⮚ 50 to 100 ml making the mass of the vessel about 45-70 g. Heating Coil: ⮚ Constantan or manganin wire, wound into a coil, usually placed near the bottom of the calorimeter. Resistance: ⮚ Typically 2 to 6Ω Max Current: ⮚ 2 to 3 A (operated via a low voltage 2-12 V D.C. power supply) Insulation: ⮚ Housed within an outer polished wooden, teak, or plastic box packed with cotton wool or felt to minimize heat loss. Lid: ⮚ Ebonite, bakelite, or insulating cork with dual holes for the thermometer and the wire stirrer. Electrical Tools: ⮚ Ammeter 0-5 A range, Voltmeter 0-5V range), and a Rheostat (to maintain constant current). Timing: Digital stopwatch. Measurement: ⮚Electronic mass balance (accuracy up to 0.1 g or 0.01g). Temperature:Laboratory thermometer (accuracy up to 0.1° C 0.2 ° C)

Enthalpy of evaporations of water apparatus: Graduated Cylinder: 10 ml capacity. Short-form, glass or high-temperature plastic Beaker: 1000 ml or 2000 m tall-form beaker (to act as the heating/cooling water bath) Thermometer: Digital thermometer or lab-grade thermometer reading from 0°C to 100°C with 0.1°C graduations. Heat Source: Small Bunsen burner or a 1000W laboratory hot plate. Stirrer: Magnetic stirrer with a small Teflon-coated stir bar, or a glass manual stirring rod. Additional: Deionized water, crushed ice, and a barometer to measure local atmospheric pressure.

THERMAL CONDUCTIVITY OF METAL RODS: The apparatus consisting of a Brass Rod of 25mm diameter 300mm length one end of which is heated using electrical Heater, Proper insulation is provided all through the Rod. Heater : Band/Cartridge Heater of 200 W Heater power control : Continuously variable Cooling System : Water-cooled jacket or heat sink at the opposite end. Power measurement : Voltmeter, and Ammeter Temperature Measurement : J type thermocouple wire o Teflon sleeved with multi point digital temperature indicator with selector switch. Range 0 to 200o C Number of thermocouples : 6 Nos The whole arrangement is mounted on a laminated table workbench with panel.

Heat Exchangers (Parallel and Counterflow) Concentric tube (tube-in-tube) heat exchanger. Inner Tube (Hot Water): Stainless steel with an outer diameter (OD) of roughly 12 mm to 21mm. Outer Tube (Cold Water): Stainless steel, OD around 33.8 mm to 40 mm. Effective Length: Usually between 1000 mm and 1600 mm. Insulation: Ceramic fiber wool or glass wool, cladded with aluminum foil to prevent ambient heat loss. Fluid Circulation: Hot water is circulated via a fractional horsepower (FHP) pump from a recycled stainless steel tank. Heating System: Integrated water geyser/heater typically 2 kW – 3 kW capacities with a digital PID temperature controller.

Solar Water Heater: ETC Solar Water Heaters Systems three-layered evacuated glass tubes that provide insulation and the outer wall is coated with high-grade absorption material. Vacuum Tube outer diameter :58mm Tube length 1800mm Outer Tank Diameter 480mm Inner Tank Diameter 380mm Tank Volume 200LPD Temperature: 65 degree C to 85 degree C Electrical Back Up 2KW/3KW