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Problem 6.7:
Steam at 5 bar, 300 °C is condensed to saturated liquid in at 5 bar in a heat exchanger at a mass flow rate of 1 kg/s. Cooling is provided by water, which enters the heat exchanger at 20 °C 1 bar and exits at 60 °C. Neglecting pressure drop in pipes and heat losses to the surroundings, determine the flow rate of the cooling water, the amount of heat that is exchanged, and the rate of entropy generation. Problem 6.8:
Steam enters a cooling tower at 200 °C and exits at 60 °C. Cooling is supplied by the surroundings which are assumed to be at 30 °C. The process takes place under atmospheric pressure (1 bar). a) Calculate the amount of heat removed from the steam. b) Calculate the entropy change of the steam. c) What is the entropy generation? d) Draw a PV graph and show the path of this process.
Think about how a growth factor would work to attract the cell to the surface and how these proteins could be anchored to the surface so that this functionality is not compromised.
Design a decanter for this duty, for a feed rate of 3500 kg/h. Concentrate on the separation of the water and aniline. The densities of water-aniline solutions are given in Appendix F, Problem F.8, available in the online material at booksite.Else..
A 60-Hz, 440-V, three-phase system feeds two balanced wye-connected loads in parallel. One load has a per-phase impedance of 8 + j3 Ω and the other 4 - j1 Ω.
Calculate the grams of H2O that will form on decomposition of 0.10 mole of ammonium nitrate
Determine the molar free energy of vaporization, Delta vapG, for benzene at 75 C and 1 bar given that the molar enthalpy of vaporization of benzene at its normal boiling point of 80.09 C and 1 bar is 30.72 kJ⋅mol-1.
The biot modulus for a 3 cm diameter sphere at 100degree C subjected to a convective air flow resulting in an average convective heat transfer coefficient from the surface of 30W/m2
Define what is meant by the numerical aperture and explain why the lens is oil filled. Using the Rayleigh Criteria, define the smallest resolvable features when light of wavelength 633 nm is used to illuminate the substrate and the oil filled obje..
If the down time per cycle for emptying, cleaning, and recharging is 6 h, how long should the evaporator be operated between cleanings in order to obtain the maximum amount of product per 30 days?
in the direct steelmaking reactor based on the reduction of an oxidizing foaming slag by char carbon particles and
Determine the electromagnetic power developed by the armature under these conditions, in watts and in horsepower.
Rank the following 3 metals in order of increasing Young's Modulus: W, Cr, Mo. Do not look up the values of Young's Modulus, instead base your answer on what you know about the structure and chemistry of these elements.
Compute the power factor for zero voltage regulation on full load.
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