subject
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.

ansver
Answers: 2

Another question on Engineering

question
Engineering, 04.07.2019 18:20
Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false
Answers: 3
question
Engineering, 04.07.2019 19:10
Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?
Answers: 3
question
Engineering, 04.07.2019 19:10
A)-explain briefly the importance of standards in engineering design. b)- what is patent? c)-explain the relationship between these standards: b.s. and b.s.en d)- in engineering design concepts, types of loads and how they act are important factors. explain.
Answers: 3
question
Engineering, 06.07.2019 02:30
Air (c-1.006 kj/kg.k, r-0.287 kj/kg.k) enters a nozzle steadily at 280 kpa and 77°c with a velocity of 50 m/s and exits at 85 kpa and 320 m/s. the heat losses from the nozzle to the surrounding medium at 20°c are estimated to be 3.2 kj/kg. determine (a) the exit temperature and (b) the total entropy change for this process. solve this problem using constant specific heats.
Answers: 1
You know the right answer?
Consider an electrically heated melting furnace in the shape of a truncated cone with a height of 7....
Questions
question
Mathematics, 29.11.2021 23:50
question
English, 29.11.2021 23:50
Questions on the website: 13722367