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Calculate the heat-removal factor and the duct flow factor for a collector having an overall heat loss coefficient of 6 W/ (m2.K) constructed of aluminum fins and tubes. Tube to tube center distance is 15 cm; fin and tube thicknesses are 0.05 cm; tube diameter is 1.2 cm; fluid heat transfer coefficient is 1200 W/ (m2.K); and the cover transmittance to solar radiation is 0.9 and is independent of direction. The solar absorbance of the absorber plate is 0.9; the
Collector is 1 m wide and 3 m long; the water flow rate is 0.02 kg/sec. The inlet water temperature is 330 K.
We all know that some astronaut had landed in the moon to check out how''s going on the moon. But why only a few astronaut? People created the Apollo and they made it. They sent so
A coil of area 100 cm 2 having 500 turns carries a current of 1mA. It is suspended in a uniform magnetic field of induction 10 -3 Wbm -2 . Its plane makes an angle of 600 with t
a) Heat produced is directly proportional to the square of the current passing by a conductor. b) This effect is produced because of collision of free electrons with positive io
Illustrates the Electric Motors? An electric motor is basically the reverse of an electric generator. It is a machine which turns electrical energy - AC from the wall or dire
how to slove
Are there many type of single ends? Single ends can be no matter which from a simple cut with snips or a cutter to a sophisticated polished encapsulation. The actual method use
High resistive materials: The materials which have their resistivity 10 -8 to 10 -6 ohm-m come under this category. These materials are used for making resistance elements fo
Battery powered vehicles Used DC series motors are the first choice. Recently AC motors with frequency changers are being considered.
Find the speed of the wave A copper wire, whose cross-sectional area is 1.1 x 10 -6 m 2 has a linear density of 7.0 x 10 -3 kg/m and is sturng between two walls. At the ambient
The water supply of a building is fed by a main pipe 6.00cm in diameter. A 2.00cm diameter tap is located 2.00m above the main pipe. When the tap is turned on it fills a 25.0L cont
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