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A flat plate solar collector, 6 ft by 12 ft, is mounted on the roof of a house. The outer surface of the collector is at 110oF and its emissivity is 0.9. The outside air is at 70oF and the sky has an effective temperature for radiation of 45oF. The collector transfers heat by natural convection to the air with a heat transfer coefficient of 3.2 Btu/h.ft2.oF and also transfers heat by radiation to the sky. Calculate the total heat loss from the solar collector.
in a laboratory steam is condensed at atmospheric pressure i.e. 212degf on the shell-side of a vertically-oriented
the wheel in fig. 10-27 has eight equally spaced spokes and a radius of 30 cm. it is mounted on a fixed axle and is
The formula for the coefficient of performance 'COP' for air standard refrigeration cycle when we use cold air properties is not given in the text. Derive the expression for COP as function of the compression ratio similar to how the ideal Brayton..
to study the performance of a race car a high speed camera is positioned at point a. the camera is mounted on a
The diameter of the tube is 13 cm and its length is 60 m. Determine the overall heat transfer coefficient of this heat exchanger using (a) LMTD and (b) -NTU method.
question 1. a mild steel bar 40 mm diameter and 100 mm long is subjected to a tensile force along its axis.youngs
assume the depth of water in the pvc pipe that you are using for the fish tank reservoir is two inches. a. compute the
a closed rigid tank whose volume is 1.5 m3 contains refrigerant 134a initially a two phase lipuid-vapor mixture at 10c.
a random sample of size 56 from a normal population showed a mean of 63 and a sum of squares of deviation from the
Titanium in the BCC structure has a radius of 0.1423 nm.
steam enters the first-stage turbine shown in fig. 2 at 40 bar and 500degc with a volumetric flownbsprate of 90 m3min.
Design a garage door controller using PLC Ladder Diagram (RSLOGIX 500 PLC SIMULATOR)
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