Lab03 Practice (2)

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QUESTION 3 A Type I offshore life jacket (i.e. personal flotation device) is the type worn by commercial fishermen - it is designed for extended survival in rough, open seawater. Consider such a life jacket that uses an impermeable foam material with a density of 32 kg/m³ - the other parts of the life jacket (straps, fasteners, etc) weigh 0.6 kg and are of negligible volume to the design. a) Draw a free body force diagram for the life jacket. b) Determine the minimum volume of foam material (in L) that is needed for the life jacket in order to provide a minimum 98 N net upward force when it is fully submerged in seawater (as required by US Coast Guard regulations).

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V:01 Expert Q&A Done Question 1: In your own words, write down the differences between thermodynamic and heat transfer. (3 Marks) Question 2: Estimate the heat loss per square metre of surface through a brick wall 0.5 m thick when the inner surface is at 400 K and the outside surface is at 300 K. The thermal conductivity of the brick may be taken as 0.7 W/mK. (2 Marks) Question 3: A furnace is constructed with 0.20 m of firebrick, 0.10 m of insulating brick, and 0.20 m of building brick. The inside temperature is 1200 K and the outside temperature is 330 K. If the thermal conductivities are as shown in the figure below, estimate the heat loss per unit area. (5 Marks) 1200 K 330 K Insulating brick X-0.10m k= 0.21 Ordinary brick X=0.20 m Fire brick X= 0.20 m k= 1.4 k= 0.7 (W/mK)

please read everything properly... Take 3 4 5 hrs but solve full accurate drawing on bond paper don't use chat gpt etc okk

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:

Pls.answer thank you! A classroom that normally contains 40 people is to be air-conditioned with window air-conditioning units of 5 KW cooling capacity. A person at rest may be assumed to dissipate heat at a rate of about 360 KJ/hr. There are 10 light bulbs in the room, each with a rating of 100 watts. The rate of heat transfer to the classroom through the walls and the windows is estimated to be 15,000 KJ/hr. If the room air is to be maintained at a constant temperature of 21°C, determine the number of window air-conditioning units required.

Question 44 For a given element in a circuit, current through it was measured to be a constant 4.0 A. If the circuit was on for 1.5 minutes, and the voltage across the same element was measured to be 8 V. What was the total energy dissipated by the element? O 32.0 ki 1.92 k Not enough information given 48.0J 2.88 k)

I need help with the second table. and these questions   1- If 1 gallon of oil = 1.4 therm, how many gallons have been wasted by heat loss in Feb? (1 therm = 100,000 BTU)   2- If $1.30 per therm, how much did you waste from house heat loss in Feb?

I need answers with clear hand writing or using Microsoft word . ASAP informations of thermal system

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…

Question #5 (Similar to Question #4, You solved, I have attached the question #4)Design a question to calculate the heating load for the building you selected indoor Environment Quality (IEQ) assessment. You will define the types of heat loss (at least two types) 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 winter and any other numbers needed to resolve this question. 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.

I need answers with clear hand writing or using Microsoft word . ASAP INFORMATION ON SOLAR THERMAL SYSTEMS

To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during transportation from a production field. (1) Consider a pipe-in-pipe configuration consisting of concentric steel tubes with an intervening insulating material. The inner tube is used to transport warm crude oil through cold ocean water. The inner steel pipe (k, = 45 W/m-K) has an inside diameter of D;, 1 150 mm and wall thickness f; = 20 mm while the outer steel pipe has an inside diameter of D; 2 = 250 mm and wall thickness t, = tị. Determine the maximum allowable crude oil temperature to ensure the polyurethane foam insulation (k, between the two pipes does not exceed its maximum service temperature of Tp. max = 70°C. The ocean water is at T.0 = -5°C and provides an external convection heat transfer coefficient of h. flowing crude oil is h; = 450 W/m²-K. 0.03 W/m-K) 500 W/m2-K. The convection coefficient associated with the (2) It is proposed to enhance the performance of the…

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Steps: 1. Collect Data: Review the Technical Specifications Document for details like storage room dimensions, wall thickness, and materials. Use the ASHRAE CLIMATIC DESIGN CONDITIONS to collect local data. 2. Calculate Room Surface Area: Determine the total surface area of the storage room, accounting for walls and ceiling. Assume that the floor is well insulated and that heat transfer within the floor is negligible. 3. Assess Insulation: Evaluate the insulation thickness and material properties. 4. Calculate Heat and Ventilation Loads: In general, heat load calculations consist of several components such as equipment and internal and external sources. In this project, it is crucial to consider lighting as part of the heat load, in addition to the ventilation load. The other factors can also be taken into account, however, those are optional considerations. For lighting load, see Appendix A. 5. Determine Heat Transfer Coefficients: The convection heat transfer coefficients for…

1. The thermal resistance of A, B, C, and D are 1, 2, 2, 4 W/ °C, respectively. The total thermal resistance to the wall conductance will be TAs = 200°C a. 9.0 W/ °C b. 5.5 W/ °C C. 6.0 W/ °C d. 16 W/ °C a. 0.672 b. 0.232 C. 0.0672 d. 0.023289 a. 250 W/mK b. 1.25 W/mK 6 cm C. 0.25 W/mK d. 0.125 W/mK A B с 2 cm 2.5 cm 3 cm g. 47.14% h. 14.14% 3 cm 2. The heat transfer due to radiation from a surface of 2 cm² area at 800 °C to a very cold enclosure is 5.0 W. Determine the emissivity of the surface at this temperature D 4 cm Problem 1.34 6 cm 3. An electric wire carrying current is covered with an insulating material. The critical diameter of the insulation is 10 mm. The outside air has heat transfer coefficient of 25 W/m² K TDs = 50°C 4. A hot potato is put in water bowl. Another hot potato of same temperature and size is kept in open air at same temperature that of water. Which potato will cool quicker and why? a. Potato in water bowl, as there will high convection comparatively b.…

Which of the following formulas describe the thermal efficiency of a cycle? Select all that applies.     1 - qin/qout     worknet/qout     worknet/qin     1 - qout/qin

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

• 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.

Please include units

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