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lo5 standard costing delaware inc uses a standard costing system the company experienced the following results related
consider the transformer of problem 8103 whose lateral surface is being maintained at 47degc by a forced convection
air at 3 atm and 100degc is discharged from a compressor into a vertical receiver of 25-m height and 075-m diameter
1 determine the maximum allowable uniform heat flux that may be imposed at a wall heating panel 1 m high if the maximum
a billet of stainless steel aisi 316 with a diameter of 150 mm and a length of 500 mm emerges from a heat treatment
consider the hot water pipe of problem 756 but under conditions for which the ambient air is not in cross flow over the
1 a horizontal electrical cable of 25-mm diameter has a heat dissipation rate of 30 wm if the ambient air temperature
a long uninsulated steam line with a diameter of 89 mm and a surface emissivity of 08 transports steam at 200degc and
1 a horizontal rod 5 mm in diameter is immersed in water maintained at 18degc if the rod surface temperature is 56degc
a plate 1 m times 1 m inclined at an angle of 45deg is exposed to a net radiation heat flux of 300 wm2 at its bottom
a bank of drying ovens is mounted on a rack in a room with an ambient air temperature of 27degc the cubical ovens are
consider the conditions of problem 99 but now view the problem as one involving free convection between vertical
a vertical array of circuit boards is immersed in quiescent ambient air at tinfin 17degc although the components
determined to reduce the 7 per week cost associated with heat loss through their patio window by convection and
the front door of a dishwasher of width 580 mm has a vertical air vent that is 500 mm in height with a 20-mm spacing
to reduce heat losses a horizontal rectangular duct that is w 080 m wide and h 03 m high is encased in a metal
the absorber plate and the adjoining cover plate of a flat-plate solar collector are at 70 and 35degc respectively and
consider the phase change material pcm of problems 847 and 957 the pcm is housed in a long horizontal and insulated
the surfaces of two long horizontal concentric thinwalled tubes having radii of 100 and 125 mm are maintained at 300
consider a horizontal flat roof section having the same dimensions as a vertical wall section for both sections the
a 50-mm-thick air gap separates two horizontal metal plates that form the top surface of an industrial furnace the
the space between the panes of a double-glazed window can be filled with either air or carbon dioxide at atmospheric
the top surface 05 m times 05 m of an oven is 60degc for a particular operating condition when the room air is 23degc
consider the cylindrical 012-m-diameter radiation shield of example 95 that is installed concentric with a
square panels 250 mm times 250 mm with a decorative highly reflective plastic finish are cured in an oven at 125c and