Engineering, 17.07.2019 22:20 tmrodriguez1
Ashell-and-tube heat exchanger with two shell passes and eight tube passes exchanges heat between water and hot air. the air flows in the shell, entering with a temperature of 350°c and leaves the heat exchanger at 175°c. water flows in the tubes at the rate of 45,500 kg/hr., entering with a temperature of 80°c and leaving at 150°c. the total surface area for the heat exchange is 925 m2. if the specific heat of water is 4,236 j/kg °c, calculate the overall heat transfer coefficient.
Answers: 1
Engineering, 04.07.2019 18:10
What are the two (02) benefits, which may result from a successful implementation of preventive maintenance (pm) program in an organization? (clo3)a)- lean manufacturing b)-overlapping responsibilities c)-the planner is not qualified d)-accurate contractor information e)-reduction in equipment redundancies f)-accurate stores information
Answers: 3
Engineering, 04.07.2019 18:20
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
Engineering, 04.07.2019 18:20
Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k
Answers: 3
Engineering, 04.07.2019 18:20
Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.
Answers: 2
Ashell-and-tube heat exchanger with two shell passes and eight tube passes exchanges heat between wa...
Mathematics, 22.03.2020 00:56
Mathematics, 22.03.2020 00:56
Mathematics, 22.03.2020 00:56
Social Studies, 22.03.2020 00:56
Mathematics, 22.03.2020 00:56
Mathematics, 22.03.2020 00:57
Social Studies, 22.03.2020 00:57
History, 22.03.2020 00:57
Chemistry, 22.03.2020 00:57
Mathematics, 22.03.2020 00:57
English, 22.03.2020 00:57
Mathematics, 22.03.2020 00:57
Mathematics, 22.03.2020 00:57
Mathematics, 22.03.2020 00:57