Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
You like to drink your mixture of coffee and cream very hot. However, it takes you 15 minutes to walk from the coffee house to your office, so you wonder when is best to mix the cream to the coffee. Your favourite mix is half-half, that is, half mug with hot coffee and half mug with ambient temperature cream. Your mug carries 500 cm3 of liquid and has a 50 cm2 top. The sides of the mug are very well insulated so most of the heat transfer is through the top of the mug. The heat transfer coefficient through the top of the mug is estimated to be 30 W/m2·K. If your objective is to drink the mix at the highest possible temperature in your office, should you mix the cream before leaving coffee house or when you arrive at your office? The density of both coffee and cream can be taken as 1 kg/L. The specific heat capacity for both coffee and cream is 4.18 kJ/kg·K. The coffee maker keeps the coffee at 350 K, and the ambient temperatures is 300 K. Neglect evaporative cooling effects and assume the temperature of the liquid is uniform that only changes with time. (You must solve quantitatively this problem in order to get credit for your answer.)
4 kw motor is driving an oil pump with an efficiency of 95 in a 10 mm diameter pipe. if the velocities of the fluid in
the slotted link is pinned at o and as a result of the constant angular velocity theta dot 3rads it drives the peg p
a thin flat plate is installed in a water tunnel as a splitter. the plate is 0.3 m long and 1 m wide. the freestream
in a direct acting pressure relief valve 64 bar pressure is acting on the conical dart seating area and the dart is
The w 310 * 129 structural A -36 steel column has a length of 4 m. If it's bottom end is fixed supported while it's top is free determine the largest axial load it can support use a factor f safety with respect to buckling of 1.75. E = 210 GPa , QY =..
a newly developed diagnostic test indicates that 80 of students predicted to score 100 on an exam actually do. the
a piston-cylinder device containing air undergoes a polytropic compression process from 2 liters 300 kpa and 20 degc to
A heat pump is used to heat a building. The outside air temperature is -10 C and the desired inside temperature is 20.3 C. The heat loss through the walls, ceiling, etc, is 30 kW. Determine the ideal coefficient of performance and the minimum power r..
determine the speed of the cam and use the motion equations and a spreadsheet to plot a displacement diagram of the
find Torque at O2, and forces at O2, A and B, also calculate shaking force and shaking torque. MEE40003- Machine Dynamics
this would provide you with a set of Reynolds numbers. Next, using the integral method, determine the velocity profiles within the boundary layer to be followed by determination of the heat transfer coefficient values for your selected Reynolds numbe..
a domestic water heater holds 189 l of water at 60 degrees c 1 atm. determine the exergy of the hot water in kj. to
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd