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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.
What is Conductors and insulators Conductors - one or more electrons from each atom in solid can move freely by body conducting electric charge (metals) Insulators - electro
Consider a horizontal cylinder with diameter D and length L. The center of the cylinder is a distance a above the ground. A wall with length W and height H is located to the side o
Advantages of D.C. transmission of power 1. It needs only two conductors as compared to three for a.c. transmission. 2. There is not an inductance, capacitance, phase displ
#questionMnS is a paramagnetic solid. At 300°K, there are 4 × 1022 molecules of MnS per cm3. If the cationic magnetic moment of MnS is 5 MB, use the Curie law in 8-b to compute the
A filter of the form G ( z ) = z 2 /( z - p )( z - p ) with p = re 4ω n will be studied. With r = 0 . 95 and ω n = Π/10 , plot the time response to
Energy is defined as internal capacity of doing work. When we call that a body has energy we denote that it can do work. Energy seems in many forms such as electrical, mechanica
What is beats
A serviceable spring balance The quality of rubber deteriorates rather rapidly in unfavourable climatic conditions; a coiled steel spring is preferable. The pattern defined ha
what is thevenin theorem
Derive a mathematical expression for the force per unit length experienced by each of the two long current carrying conductors placed parallel to each other in air. Hence explain o
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