Lab03 Practice (2)

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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

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You are charged with specifying a cooling system for a house. The solar and internal gains have been calculated already, but you need to increase its capacity to account for ventilation. The ventilation system will constantly exhaust 200 cubic feet per minute (CFM) of stale air and replace it with 200 21 CFM of fresh air. On a design day, the outdoor air is 90°F dry bulb temperature and 73°F wet bulb temperature. Indoor air is expected to resolve to "standard 21 air" at 75°F and 50% relative humidity (%RH). What is the additional amount of coolir acity required to account for the ventilation system? Your answer should be in Btu/h. Answer:

Energy and system size calculation TEQ assessment (4.1) Design a question to calculate the cooling load for the building you selected for You will define at least FOUR types of heat gain in that building (or the floor you are working on or you are familiar with). The indoor temperature is set as 75 F, and you can assume the outdoor temperature based on the location of your building in the summer and any other numbers needed to resolve this question. (4.2) Calculate the corresponding cooling load for the question you designed above. For all the details as well as the final answer that this question is asking for, clearly indicate the unit for each piece of information. In a word, you will design a question for your building about cooling load calculation. Assumptions and/or supporting drawings/figures/tables are allowed and encouraged. You can decide the level of detail for this question, e.g., the more details and the more accurate information, the more accurate and realistic your…

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M3 Discuss the importance of standards applied in the engineering environment

Please answer this question and solve write out each step at least for the baseline case. If you reference any tables please site them or include. Thanks.

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How may acoustic designers alter the design of a room, which was previously used for music performances, into a room now to be used for spoken word performances? Use annotated diagrams for your response

Using the Ashby chart below (also given in class), Strength - Max service temp. Carbon Cost Low aloy Ti aloys Ses irore soels Stainless sloels CFRP Ni alóys Walloys Mg aloys Al alloye Cu ellays SiNa 1000 Metals Zinc aloys Nyors PET PUMA AIN 100 GFR ea glase PVC - ANS PEEK Soda gloss Borosilicate glas Technical ceramics pp poces Neoprone Louhey 10 Brick Lead alloys EVA PTFE Stone lonomers Wood Polymers and elastomers Scone elastomers Non-technical ceramics Rgd palymer foams Coscrete Buta rubber Cork Foams 01 Fexble polymer foams MEA 4 0.01 10 100 Maximum service temperature, Tmax (°C) 30 300 1000 what would be the most appropriate choice for the bulk material used for a turbine blade in a jet engine? O Al203 Nickel alloys Carbon fibre composite O Kevlar Strength, of (MPa)

• Temperature plot scoped to steam pipe (cast iron) in C° units. Fill in the below table. Compute the temperature drop up to THREE decimal places (see hint given below). Temp drop in Insulator Temp drop in Pipe ANSYS Results • Include the above table in your submission.

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Mechanical engineering assistance. Please answer to the best of your ability. Show all work that is necesary.

Engineering design

a.) Determine the thermal conductivity of the plasterboard (kp), in W/m*K b) Determine the value of the inside convection resistance (Ri), in degrees C/W. c) Determine the value of the fiberglass blanket resistance (Rb), in degrees C/W. d) Determine the value of total heat transfer resistance (Rtotal), in degrees C/W. e) Determine the value of heat loss (q), in kW.

All changes saved A 10. Quintin is performing an experiment to test whether colder temperatures reduce the amount of friction between a block of Ice and a sheet of metal. Which of the following is the Independent varilable in Quintin's experiment? O friction O materials used O welght of the ice O temperature PREVIOUS 10 of 10 NEXT REVIEW SAVE & EXIT hp esc @ 23 24 % * 1 2 3 4 6. 7 8

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1.1 A company compares two temperature instruments daily: one coupled to a processor computer and the other used for visual control. Day-to-day variation is expected. On each of three days, the two instruments are used to measure the temperature. Ideally, these two instruments should agree. How many factors are there in this experiment? What are they? List the levels for each factor.