If the steel rods have a diameter of 60 mm and a length of

Assignment Help Chemistry

Reference no: EM13344328

In a quench hardening process, steel rods (ρ = 7830 kg/m3, cp = 444 J/kg.K and k = 70 W/m.K) are heated in a furnace to 900oC and then cooled in a water bath to an average temperature of 90oC. The water bath has a uniform temperature of 35oC and convection heat transfer coefficient of 400 W/m2.K. If the steel rods have a diameter of 60 mm and a length of 2.5 m, determine

a) The time required to cool a steel rod from 900oC to 90oC in the water bath

b) The total amount of heat transferred to water during the quenching of a single rod

Reference no: EM13344328

Questions Cloud

What is the percent yield of a reaction in which 260 g : what is the percent yield of a reaction in which 260. g phosphorus trichloride reacts with excess water to form aqueous

A flask contains 0180 mol of liquid bromine br2 determine : a flask contains 0.180 mol of liquid bromine br2. determine the number of bromine molecules present in the

From the ratio of the mass of the black product to the : from the ratio of the mass of the black product to the initial 5g placed in the flask could the remaining black

What mass of ethylene glycol must be added to 1455 g of : what mass of ethylene glycol must be added to 1455 g of water to raise the boiling point to 104.7 degree celsius

If the steel rods have a diameter of 60 mm and a length of : in a quench hardening process steel rods rho 7830 kgm3 cp 444 jkg.k and k 70 wm.k are heated in a furnace to 900oc

A solution composed of 50 ethanol etoh 10 methanol meoh : a solution composed of 50 ethanol etoh 10 methanol meoh and 40 water h2o is fed at the rate of 100 kghr into a

What is the impact on your recommendation of the fact that : 1. for each of the two proposed replacement presses determinenbspa. initial investment.nbspb. operating cash inflows.

How many grams of carbon dioxide can form when a mixture of : how many grams of carbon dioxide can form when a mixture of 6.00 g ethylene c2h4 and 2.50 g of oxygen is ignited

The flask is removed from the bath and cooled dried and : a 255 ml round bottom flask is weighted and found to have a mass of 114.85g. a few milliliters of an easily vaporized

User Account

All Pages