A phosphate solution [sp. gr. = 1.3, Cp = 0.757 BTU/(lbm. °R), μgc = 2.9 lbm/(ft.hr), kf = 0.3 BTU/(hr.ft.°R)] is used in the production of fertilizer. The solution is to be cooled from 150°F to 140°F using well water, available at 55°F. The phosphate solution flows at a rate of 7000 lbm/hr and has a dirt factor of 0.001 hr ft. °R/BTU. Select an appropriate exchanger and analyze it completely.

Please answer within one hr i will give good rating.

calculate the step by step

12. Cylindrical metallic parabolic solar thermal concentrator A. Does not rotate. B. It rotates around one axis only. C. It rotates around two axes only. D. The concentration ratio achieved is: 500-1000. E. The concentration ratio achieved is: 50-100. F. The concentration ratio achieved is: 10-50. * A + D only. B +E only. B + F only. O C + E only

9:43 am Fri 24 Dec * 62% + : 0 King Abdul Aziz University Thermofluids AE300 Aero. Eng. Dept Faculty of Engineering Assignment 6 I/II law, Entropy, Cycles Handwritten assignment. Detailed answers are expected. Use your university ID. What is a pure substance? Write any four examples of pure substance. Draw tv and Pv diagram of water showing critical pressure and temperature magnitudes. Define specific heats. Differentiate between specific heats at constant pressure and constant volume. Give their examples. Write the values of cp, cv, R, and y for air and combustion products. 1. 2. 3. A 0.2 m³ vessel contains 120+last two digits kg of water at 90 ° C. Determine pressure, specific and total internal energy, specific and total enthalpy, and specific and total entropy. A vessel contains 10 kg of water at 200 kPa. Determine pressure, specific and total internal energy, specific and total enthalpy, and specific and total entropy. Consider 5 different cases/states: T= 30 ° C 4. а. b. T= Tsat…

In what four states does matter exist? Cite examples of each.

5. An electric motor draws a current of 10 A with a voltage of 110 V. The output shaft develops a torque of 9.7 N·m and a rotational speed of 1000 RPM. For operation at steady state, determine for the motor: a) The electric power required. [1.1 kW] b) The power developed by the output shaft c) The average surface temperate, T,, if h = The motor has a surface area of 0.26 m². [1.0 kW] 15 [43 °C] m²-k 10 amp TION and the surrounding air is at Tair = 21 °C. Motor TAR= 21°C h = 15 W/m²K W U 7-97N-m 1000 RPM

7. Describe the relevance of relative humidity. Please select all answers that apply: a) Relative humidity is the same as absolute humidity. b) Relative humidity is the same as specific humidity. c) Relative humidity is the same as mixing ratio. d) Relative humidity is the ratio of the amount of moisture the air hold to the maximum amount of moisture the air can hold at the same temperature. e) Mathematically relative humidity can be given by RH = X ,/X v,sat = P v/ p v. sat

1- Select the optimum choice for: high speed air craft skins material. Table 1: The properties of metallic materials E, GPa Max. use lemp, 'C | Density, Mg/cm' ay, MPa | Relative cost per unit sheet area Material 2.8 300 2 Aluminum alloy 200 69 200 7,8 350 350 700 Carbon steel Stainless steel 193 7.8 650 6 8.9 600 6 Nickel alloy Titanium alloy 207 1000 116 600 4.5 900 10 Table 2: Weighting factor Specific yield strength: Max, use temperature: Youngs modulus: 4 2

Distilled water at 10deg C stands in a glass tube of 9.0 mm diameter at a height of 24.00 mm. What is the true static height in mm if the surface tesnsion is 0.0742 N/m.   a.24 mm b.27.4 mm c.20.6 mm d.3.4 mm