Figure 2: Two – stroke diesel engine (Left) Four – stroke diesel engine (Right) Project 3: It is vital to optimize the heat loss from a house through well designed composition and proper selection of the insulation layer of the wall layers. Your role as a thermal power engineer to investigate the heat transfer performance of a composite walls. Your head of department asked you to analyze the composite walls structure in Figure.3 and determine the steady rate of heat transfer and total heat loss, if the following design specifications must be met: Glass fiber blanket kp Plaster board, k, Plywood siding, k, Outside Inside h, T=-10 °C h, T = 20°C 11 16 mm 90 mm 8 mm Figure 3: Composition of the wall layers and the insulation layer. Indoor room temperature must be maintained at 20°C. Outdoor temperature mostly is -10°C in a hard winter. Wall is made of plywood with thermal conductivity constant of K, = 0.115 W/(m. K). Fiberglass insulation is used with thermal conductivity constant of K, = 0.045 W/(m. K). Plaster board is used as inner layer for decoration purpose with thermal conductivity constant of K, 0.27 W/(m. K). Convection heat transfer coefficients for indoor and outdoor are hin = 34 W/(m2.K) and hin = 65 W/(m². K) , respectively. Total wall surface area is 270 m2 4 Project 4: Pipe lagging is an insulation fitted around pipes to maintain energy loss at minimum and prevent any freezing or bursting. Your part in the HTU thermodynamics and heat transfer lab is to conduct an experiment to explore the heat losses that would occur in both lagged and unlagged hot water pipe. The required tools and main apparatus are shown in Figure.4 and general schematic is shown in Fugure.5. (c) Lagged pipe (a) Pump (b) Thermocouple Figure 4: Required tools and main apparatus Figure.1, shows the pump for providing running the cycle, thermocouple for measuring the temperature and the pipe coil. Q: Heat Loss Inlet Hot Water Outlet Cold Water Figure 5: Schematic of the pipe coil
Figure 2: Two – stroke diesel engine (Left) Four – stroke diesel engine (Right) Project 3: It is vital to optimize the heat loss from a house through well designed composition and proper selection of the insulation layer of the wall layers. Your role as a thermal power engineer to investigate the heat transfer performance of a composite walls. Your head of department asked you to analyze the composite walls structure in Figure.3 and determine the steady rate of heat transfer and total heat loss, if the following design specifications must be met: Glass fiber blanket kp Plaster board, k, Plywood siding, k, Outside Inside h, T=-10 °C h, T = 20°C 11 16 mm 90 mm 8 mm Figure 3: Composition of the wall layers and the insulation layer. Indoor room temperature must be maintained at 20°C. Outdoor temperature mostly is -10°C in a hard winter. Wall is made of plywood with thermal conductivity constant of K, = 0.115 W/(m. K). Fiberglass insulation is used with thermal conductivity constant of K, = 0.045 W/(m. K). Plaster board is used as inner layer for decoration purpose with thermal conductivity constant of K, 0.27 W/(m. K). Convection heat transfer coefficients for indoor and outdoor are hin = 34 W/(m2.K) and hin = 65 W/(m². K) , respectively. Total wall surface area is 270 m2 4 Project 4: Pipe lagging is an insulation fitted around pipes to maintain energy loss at minimum and prevent any freezing or bursting. Your part in the HTU thermodynamics and heat transfer lab is to conduct an experiment to explore the heat losses that would occur in both lagged and unlagged hot water pipe. The required tools and main apparatus are shown in Figure.4 and general schematic is shown in Fugure.5. (c) Lagged pipe (a) Pump (b) Thermocouple Figure 4: Required tools and main apparatus Figure.1, shows the pump for providing running the cycle, thermocouple for measuring the temperature and the pipe coil. Q: Heat Loss Inlet Hot Water Outlet Cold Water Figure 5: Schematic of the pipe coil
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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