HW4

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. Figure.1, shows the pump for providing running the cycle, thermocouple for measuring the temperature and the pipe coil. Your lab instructor asked you to perform the following tasks: • Fit the lagging around the pipe • Connect the pump to inlet of coil • Measure the hot water terampere at the inlet (make sure the temperature reaches its steady state before measuring it) • Operate the cycle by turn on the pump • Measure the cold water terampere at the outlet in steady state. • Repeat the previous step with unlagged pipe • Search for an appropriate video where a test to measure the…

QUESTION: Suppose a bolted tension used in a doube-D ring configuration is properly preloaded. The spring constant for the bolts is 7.8 MN/m and the spring constant for the members is 12.7 MN/m. By how much does the tensile force in the bolt increase when a load of 705 N is applied? You may assume that joint separation does not occur. Give your answer in units of N

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Industrial Pipes Are pipes with screw connections not used when they have a large diameter due to the cost of opening threaded threads in them and their accessories?

Please select all that applies. The possible failure modes for bolted joints are:     shear in the bolts     bearning of the bolts on the connected material     tension in the connected parts     torsion in the connected parts

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114 About industrial piping: HOW ARE EXPANSION JOINT CALCULATIONS MADE?

Industrial pipes Expansion joints are fragile elements and therefore should be avoided as much as possible in the project, only when there is no space to place expansion joints or curves in sufficient quantity to give flexibility to the section?

What are valid reasons for adding Yttrium to the zirconia in the Thermal Barrier Coating (TBC) in a turbine blade? Select one or more: O a. To match the thermal conductivity of the TBC to the metal substrate b. To avoid breakage during change in thermal conditions O c. To match the thermal conductivity of the TBC to the underlying oxide layer Od. To increase the weight of the TBC O e. To prevent a change of the crystallographic structure as the temperature changes

8. Design the length of weld (L) in the connection below to develop the full tensile capacity of the plate. Use E70 electrodes and 1/4" side fillet welds. The material is ASTM A36 Steel and the allowable axial tensile stress is 22,000 psi. (show all your work) "L" PL 1/2" PL 3/8" x 6" P

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Нome work 1. A plate( 100 mm) wide and (10 mm) thick is to be welded with another plate by means of double transverse welds at the ends. If the plates are subjected to a load of (70 kN ), find the size of weld for static as well as fatigue load. The permissible tensile stress should not exceed (70 MPa) [Ans. 83.2 mm; 118.5 mm]

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On all CJP groove welds in butt joints transverse to the computed tensile stress, they:

Note: All dimensions are in mm E - 210 000 MPa (N/mm') F-13 IN 1. A bracket is shown in the figure. Calculate the stresses on the welding. The bracket welded by E7018 clectrode. Based on stresses calculations, calculate the design factor of safety ELECTRODE TENSILE NUMBER YIELD STRENGTH STRENGTH _(MPa) (345) (393) (462) (531) (MPa) E60xx (427) (482) (551) (620) A = 0.707h(b + 2d). E70xx i = b/2 ESOxx b+ 2d E90xx 2d3 (600) (737) - 2d?y + (b+2d)3² 3 E100xx (689) (827) %3D E120xx