The human body is adaptable to extreme climatic conditions and keeps the body core and skin temperatures within the comfort zone by regulating the metabolic heat generation rate. For example. in extreme cold conditions, the human body will maintain the body temperature by increasing metabolic heat generation, while in very hot conditions, the body will sweat and release heat. To understand this effect of ambient conditions on the human body, repeat Example 3-14 in the text and consider a case where climatic conditions change from -20°C and 20°C. For this change in ambient air temperature, calculate the metabolic heat generation rate required with skin/fat thicknesses of 0.0075, 0.005, and 0.0025 m to maintain the skin temperature at page 238 34°C. Assume that in spite of the change in ambient air temperature. the perspiration rate remains constant at 0.0005 s − 1 . Plot a graph of metabolic heat generation rate against the ambient temperature with temperature increments of 5°C.
The human body is adaptable to extreme climatic conditions and keeps the body core and skin temperatures within the comfort zone by regulating the metabolic heat generation rate. For example. in extreme cold conditions, the human body will maintain the body temperature by increasing metabolic heat generation, while in very hot conditions, the body will sweat and release heat. To understand this effect of ambient conditions on the human body, repeat Example 3-14 in the text and consider a case where climatic conditions change from -20°C and 20°C. For this change in ambient air temperature, calculate the metabolic heat generation rate required with skin/fat thicknesses of 0.0075, 0.005, and 0.0025 m to maintain the skin temperature at page 238 34°C. Assume that in spite of the change in ambient air temperature. the perspiration rate remains constant at 0.0005 s − 1 . Plot a graph of metabolic heat generation rate against the ambient temperature with temperature increments of 5°C.
Solution Summary: The author analyzes the metabolic heat generation rate against the ambient temperature with temperature increment of 5°C. A human with lesser skin layer thickness will have higher metabolism to maintain interface temperature.
The human body is adaptable to extreme climatic conditions and keeps the body core and skin temperatures within the comfort zone by regulating the metabolic heat generation rate. For example. in extreme cold conditions, the human body will maintain the body temperature by increasing metabolic heat generation, while in very hot conditions, the body will sweat and release heat. To understand this effect of ambient conditions on the human body, repeat Example 3-14 in the text and consider a case where climatic conditions change from -20°C and 20°C. For this change in ambient air temperature, calculate the metabolic heat generation rate required with skin/fat thicknesses of 0.0075, 0.005, and 0.0025 m to maintain the skin temperature at page 238 34°C. Assume that in spite of the change in ambient air temperature. the perspiration rate remains constant at
0.0005
s
−
1
. Plot a graph of metabolic heat generation rate against the ambient temperature with temperature increments of 5°C.
CORRECT AND DETAILED SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. I REALLY NEED FBD.
The cantilevered spandrel beam shown whose depth tapers from d1 to d2, has a constant width of 120mm. It carries a triangularly distributed end reaction.Given: d1 = 600 mm, d2 = 120 mm, L = 1 m, w = 100 kN/m1. Calculate the maximum flexural stress at the support, in kN-m.2. Determine the distance (m), from the free end, of the section with maximum flexural stress.3. Determine the maximum flexural stress in the beam, in MPa.ANSWERS: (1) 4.630 MPa; (2) 905.8688 m; (3) 4.65 MPa
CORRECT AND DETAILED SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. I REALLY NEED FBD
A concrete wall retains water as shown. Assume that the wall is fixed at the base. Given: H = 3 m, t = 0.5m, Concrete unit weight = 23 kN/m3Unit weight of water = 9.81 kN/m3(Hint: The pressure of water is linearly increasing from the surface to the bottom with intensity 9.81d.)1. Find the maximum compressive stress (MPa) at the base of the wall if the water reaches the top.2. If the maximum compressive stress at the base of the wall is not to exceed 0.40 MPa, what is the maximum allowable depth(m) of the water?3. If the tensile stress at the base is zero, what is the maximum allowable depth (m) of the water?ANSWERS: (1) 1.13 MPa, (2) 2.0 m, (3) 1.20 m
CORRECT AND DETAILED SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. I NEED FBD
A short plate is attached to the center of the shaft as shown. The bottom of the shaft is fixed to the ground.Given: a = 75 mm, h = 125 mm, D = 38 mmP1 = 24 kN, P2 = 28 kN1. Calculate the maximum torsional stress in the shaft, in MPa.2. Calculate the maximum flexural stress in the shaft, in MPa.3. Calculate the maximum horizontal shear stress in the shaft, in MPa.ANSWERS: (1) 167.07 MPa; (2) 679.77 MPa; (3) 28.22 MPa
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.