Q31 Calculate the total cooling load for a building at 32° North latitude at time 14 of July, outdoor design temperature 35 °C, daily range DR-11.1 °C and indoor design temperature 25.5 °C. The building has the following data: A-The ceiling is constructed from 152.4 mm lightweight concrete (I.W concrete) and with a suspended ceiling, dark colour (k-1) and no mechanical ventilation (f= 1). Area= 25 m². B-South window consists of 3 mm one layer without internal shading, area=4 m², U=4.5 W/m2 °C. Assume shading coefficient SC=1 and cooling load temperature difference CLTD=7 °C and cooling load factor CLF=0.55. C- West wall is constructed from 101.6 mm heavyweight concrete wall+finish (H.W. concrete wall+Finish) (group E) and medium colour (k=0.83). Area= 17.5 m². D- There is another window that has one hinge that causes an infiltration rate of 5 L/(s.m) of infiltrated air. The moving window has a height of 1.5 m and a width of 1 m. E- Four occupants in the building. The measured change in the enthalpy is Ah-20 kJ/kg. Assume the building is used as a meeting hall with 15 L/s per person.

The task is to utilise ANSYS Workbench in the design and simulation of a linear, open-sidedcovered walkway, used to provide shelter to pedestrians from the elements whilst ensuringmaximum freedom of movement. An example of a covered walkway . Thecovered walkway is intended for use on a university campus in the United Kingdom. It isdesired that the total mass of the covered walkway is kept to a minimum. There are norestrictions on materials used or methods of manufacture.

Using the information in Problem 1.22, estimate the ambient air temperature that could cause frostbite on a calm day on the ski slopes. 1.22 In order to prevent frostbite to skiers on chair lifts, the weather report at most ski areas gives both an air temperature and the wind-chill temperature. The air temperature is measured with a thermometer that is not affected by the wind. However, the rate of heat loss from the skier increases with wind velocity, and the wind-chill temperature is the temperature that would result in the same rate of heat loss in still air as occurs at the measured air temperature with the existing wind. Suppose that the inner temperature of a 3-mm-thick layer of skin with a thermal conductivity of 0.35W/mKis35C and the air temperature is 20C. Under calm ambient conditions the heat transfer coefficient at the outer skin surface is about 20W/m2K (see Table 1.4), but in a 40-mph wind it increases to 75W/m2K. If frostbite occurs when the skin temperature drops to about 10C, do you advise the skier to wear a face mask? What is the skin temperature drop due to the wind?

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)

Given problem: Tolits is working on a restaurant famous for its soup. His end of shift is 5:00 pm and needs to go home by that time to pick up his wife, Marites for their anniversary date. A customer made a reservation at 5:15 pm and wants his soup to be ready at that exact time.  To ensure the quality of the soup, it should be served at a temperature which is exactly 86C. Tolits needs to prepare the soup before the end of his shift. Initially, as Tolits is preparing the soup, its temperature is 21∘C and placed on a pan heated at 149∘C. After 5 minutes, its temperature is 36∘C. The soup is done (cooked) once its temperature is 120∘C. Tolits found out that cooling it in a sink full of cold water, while the faucet is running with the water resulting to roughly constant temperature of 26∘C, could bring the temperature of the soup to 86C to be ready at 5:15 pm. How many minutes before the end of the shift of Tolits should he start cooking soup so that he is done before 5:00 pm and his…

The task is to utilise ANSYS Workbench in the design and simulation of a linear, open-sidedcovered walkway, used to provide shelter to pedestrians from the elements whilst ensuringmaximum freedom of movement.  The covered walkway is intended for use on a university campus in the United Kingdom. It is desired that the total mass of the covered walkway is kept to a minimum. There are norestrictions on materials used or methods of manufacture.

MECT361 Mechatronics Components and Instrumentation Please solve the problem in keupord 0.Consider the Material Selection Design Problem for the FRAME of a Human Powered Road Vehicle. Define the selection criteria, assign weights (importance), and evaluate the following alternatives based on COST, WEIGHT, STRENGTH, AVAILABILITY, MANUFACTURABILITY, ASSEMBLY, TEST & MAINTENANCE, ENVIRONMENT & SUSTAINABILITY, SAFETY & RELIABILITY: a.Steel b.Aluminum c. Titanium d.Composite- CFRP

Please Help me to solve the following physi cal example #1 A Boiler hAS 0.22 m² of net furnace area supported by SA - 36 stay bolts, spuced O.134 by 0.134 m. The mAXimum working pressure is 1, 225 k Pa Calculate: a) diameter of an Stay bolt B) Number of stoybolts re guired Take 3= 114 MPA ond %3D State the paragraph of ASME code used year

What is the heat loss coefficient that has a symbol Uair and is found from (volumetric flow * density * specific heat capacity) of a building with a volume of 23814 cubic feet, if there is a natural air change per hour of 0.04? Review Appendix A.5 Provide your answer in units of BUT/(hr F). Answer:

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…