A 1200 W electric resistance heating element whose diameter is 0.5 cm is immersed in 55 kg of water "ep 4.18 kJ/kg.K" initially at 20 C. Assuming the water container is well insulated. What is the gatropy generated during this process, "kJK" when the surroundings are at T-15 C?
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- Consider a heat engine with a piston chamber that has a diameter of 30 mm, a cold reservoir at 285 K and hot reservoir at 350 K. It is also equipped with a metal can cylinder that has a volume of 0.0002 m3. How many moles of air are present in the system if the metal cylinder is in the cold tank and the measured pressure and the total air volume are 104160 and 0.00015 m3, respectively?Determine the quantity (volume) of saline water in a steam generator. The heat energy of 1525 kJ is supplied to saline water in the steam generator to heat from 25°C to 114°C for the generation of water vapor, Take the density & specific heat of the solution as 1031 kg/m' & 4.5 J/kg°K respectively. Solution: Change in Temperature (in K) Mass of the saltwater (in kg) Quantity (Volume) of saltwater (in m2) earch 立Determine the heat extracted(in KJ) from 2000 kg of water from 25°C to ice at -10°C.