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Consider a counter-flow heat exchanger in a refrigeration system. Saturated liquid-vapor mixture of R-22 enters the heat exchanger at -12?C with a quality of 20% (State 1) and exits as saturated vapor without any pressure drop (State 2). Air enters the heat exchanger at 27oC and 1.1 bar (State 3) with a volumetric flow rate of 1.2 m3/s and rejects 23 kW of heat which is completely absorbed by the refrigerant. Air exits the heat exchanger without any pressure drop (State 4).
(a) Calculate temperature of air at the exit of the heat exchanger.
(b) What is the mass flow rate (kg/s) of R-22?
Package Design Brief: Assume you are the packaging engineer for a large consumer products company. In this company, the Packaging Design Briefs are initiated by the marketing group and forwarded to the Package Engineering group.
Define dynamic viscosity, Determine the centroid, Pressure due to the height of liquid, Advantage of changing the liquid, Calculate the total moment about the hinge of the seal gate.
DOF system and Find the differential equation describing the system
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8 x product engineering and design review (week 2 – 12), ~3 pages per item which must contain a brief description of the product then delve into concepts such as materials selection, manufacturing methods, life cycle analysis, recyclability and overa..
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Determine the magnitude of the horizontal and vertical components of the force of the water on the gate.
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