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A cross-flow fin-and-tube heat exchanger uses hot water to heat air from 290 to 300 K. Water enters the heat exchanger at 340 K and exits at 310 K. If the total heat-transfer rate is to be 300 kW and the average heat-transfer coefficient between the water and the air is 50 W/m2 ·K, calculate the area of the heat exchanger required and the mass rate of air flow through the exchanger.
Energy and exergy analysis of passive solar distillation system - Summarize and write up using the given format
a manufacturer found hat the sales figure for a certain item depended on the selling price. the market research
a car accelerates uniformly from rest to 50 mph over a distance of 18 miles along a curve of 700 ft radius. determine
55 - 7947 Equipment Engineering and Design Assignment. What are the likely causes of the vibration problems? What would you, as plant engineer, recommend to prevent recurrence
An insulated vessel is divided into two compartments connected by a valve. Initially, one compartment contains steam at 10 bar and 500ºC and the other is evacuated. The vale is opened and the steam is allowed to fill the entire volume, achieving a fi..
when designing a front end loader what considerations must you make in the machine how it might be used and the type of
By supplying energy at an average rate of 24,000 kJ/h, a heat pump maintains the temperature of a dwelling at 208C. If electricity costs 8.5 cents per kW ? h, determine the minimum theoretical operating cost for each day of operation if the heat p..
Consider a sealed can that is filled with refrigerant-134a at 20°C. Now a leak develops, and the pressure in the can drops to the local atmospheric pressure of 80 kPa. What is the temperature of the refrigerant in the can when the pressure drop is co..
1. Refrigerant 134a as saturated vapor at 210°C enters a compressor operating at steady state with a mass flow rate of 0.3 kg/s. At the compressor exit the pressure of the refrigerant is 5 bar. Stray heat transfer and the effects of motion and gra..
Atmospheric air at a pressure of 1 atm and dry-bulb temperature of 90F has a wet bulb temp of 85F. Using the psychometric chart, determine (a) the relative humidity, (b) the humidity ratio, (c) the enthalpy, (d) the dew point temp and (e) the water v..
The tension in the supporting cable BC is 800 lb. Write the force which this cable exerts on the boom OAB as a vector T. Determine the angles qx , qy and qz which the line of action of T forms with the positive x-, y-, zaxes.
the diameter of the hollow core of a solid propellant grain remains axially uniform during burning. its length is 5 m
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