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Heat is transferred to a heat engine from a furnace at a rate of 92MW. If the rate of waste heat rejection to a nearby river is 45MW, determine the net power output and the thermal efficiency for this heat engine.
It is the energy possesses by the system as a result of its elevation with respect to the gravitational acceleration of the earth.
In second law of thermodynamic, which of the following state that no heat engine can have a thermal efficiency of 100% or as far as power plant to operate, the working fluid must exchange heat with the environment as well as the furnace
A rigid tank contains a hot fluid that is cooled while being stirred by a paddle wheel. Initially, the internal energy of the fluid is 850kJ. During the cooling process, the fluid loses 550kJ of heat, and the paddle wheel does 200kJ of work on the fluid. Determine the final energy of the fluid. Neglect the energy stored in the paddle wheel
Is the amount of a substance that contains Avogadro’s number of atoms/molecules.
The food compartment of a refrigerator is maintained at 4°C by removing heat from it at a rate of 300 KJ/min. If the required power input to the refrigerator is 3KW, determine the coefficient of performance of the refrigerator
A 466g sample of Water is Heated from 8.50’C to 74.60’C. Calculate the amount of Heat Absorbed (in Kilo Joules) by the Water
Vapor pressure depends only on
The gas in a constant gas thermometer cooled to absolute zero would have
Thermodynamics is the study of heat and its transformation which stems from Greek words meaning
_________ states that a constant pressure and temperature, the volume of a gas is directly proportional to the number of moles present
25. A 50 kg iron block at 80°C is dropped into an insulated tank that contains 0.5 m^3 of liquid water at 25°C. Determine the temperature when thermal equilibrium reached. The specific heat of iron is 0.45kJ/kg-°C and for water is 4.18kJ/kg-°C.
is the grand total of all energies inside a substance.
It indicates that the rate of heat conduction in a direction is proportional to the temperature gradient in that direction
is a thermodynamic potential that measures the “useful” or process-initiating work obtainable from an isothermal, isobaric thermodynamic system.
What is the amount of radiant energy received each second over each square meter that is at right angles to the sun’s rays at the top of the atmosphere?
The change in physical size of a substance when its temperature changes.
The flow of a fluid when heat is transferred by convection.
_______ states that the partial pressure of a solvent over a solution is given by the vapor pressure of the pure solvent times the mole fraction of the solvent in the solution
When a 2lb of brass at 212°F is dropped into 5lb of water at 35°F, the resulting temperature is 41.2°F. Find the specific heat of brass in Btu/lb-°F
