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A new building to be located in a cold climate is being designed with a basement that has an L=200 mm thick wall. Inner and outer basement wall temperatures are t=20 c and t=0 c respectively. the architect can specify the wall material to be either aerated concrete block with k= 0.15 W/m.K or stone mix concrete. To reduce the conduction heat flux through the stone mix wall to a level equivalent to that of the aerated concrete wall, what thickness of extruded polystyrene sheet must be applied onto the inner surface of the stone mix concrete wall? Floor dimensions of the basement are 20 m * 30 m, and the expected rental rate is $50/m2/month. What is the yearly cost,in the terms of lost rental income, if the stone mix concrete wall with polystyrene insulation is specified?
module fea - finite element analysisnbspquestion 2 method to assess the value of your analysis outputnbspa what is the
If the unit can perform its function either in State 1 or 2, find the steady-state availability A for the device.
a quantity of steam the original pressure and volume being 140 knm2 and 150 litres respectively is compressed to a
Cantilever Beam with maximum tensile strength. A cantilever beam is to be made using a symmetrical I section beam. The cantilever is to carry a load of 40kN at a distance 2.5m from the fixed end. The situation allows for a depth of I beam to be no..
a cylindrical wheel billet 1ft. in diameter and 3ft. long initially at 1000 f is quenched in oil. assume that the
a 1 m3 tank containing air at 25oc and 500 kpa is connected through a valve to another tank containing 5 kg of air at
a bead a weighting 2lb slides on a quarter-circular frictionless bar bc with radius. the bead is supported by a cable
a 600 mw coal-fired power plant has an overall thermal efficiency of 38. it is burning coal that has a heating value of
What will the ratio of the angle of twist be to that of the hollow shaft if the maximum shear stress in the material of 75 N / mm ^2 and what is the ratio of actual permissible shear stress?
Lift coefficient (Cl) and lift (L), An airfoil of surface area 1ft squared is tested for lift (L) in a wind tunnel. At an angle of attack of 5 degrees with standard air of density 0.0024 slugs/ft cube at a speed of 100 ft/sec
B) Determine the minimum amount of work [kJ ] required to reach this end state. C) If more than the minimum work is actually used, where does this extra energy go? That is what becomes of the extra energy?
Important information about Multipal choice question on mechanics, A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine?
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