Engineering, 11.07.2019 04:10 bestkitty2588

Consider an electrically heated melting furnace in the shape of a truncated cone with a height of 7.5m and a base diameter of 5m. at the top of the furnace is an opening with diameter 2.5m. is proposed to place a disk-shaped covering with hole diameter 1.5m to reduce energy losses while still allowing for the charging of materials to keep the furnace in continuous operation. (i) determine the power required to opcrate the furnace such that, when cmpty (i. e under preheat), the surface temperatures of the conical sides are at 1000°c and the surface temperature of the base is50°c. the ambient temperature at the top of the furnace is 300°c. (2)-calculate the percent reduction in energy if the covering is used, assuming the same ambient temperature as that given above.

Answers: 2

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Answers: 1

Answer

Engineering, 04.07.2019 18:10

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

Answers: 2

Answer

Engineering, 04.07.2019 18:20

Asimple rankine cycle uses water as the working fluid. the water enters the turbine at 10 mpa and 480c while the condenser operates at 6 kpa. if the turbine has an isentropic efficiency of 80 percent while the pump has an isentropic efficiency of 70 percent determine the thermal efficiency

Answers: 1

Answer

Engineering, 04.07.2019 18:20

Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.

Answers: 3

Answer

You know the right answer?

Consider an electrically heated melting furnace in the shape of a truncated cone with a height of 7....

Questions