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A Carnot heat pump is to be used to heat a building in the winter to maintain an inte rior temperature of 22 C. Heat transfer through the walls and roof is estimated to be 5 40 kJ/hr per degree temperature difference between the inside and outside. a. If the outside temperature in the winter is - 5 C, what power required to drive the heat pum p (kJ/hr)? b. What is the rate of heat removal from the surroundings? c. If the power input to the heat pump is supplied from a Carnot heat engine with a hot thermal reservoir at 100C (and the cold reservoir at 12 C, far underground), what is the necessary rate of energy removal from the hot reservoir supplying the engine.
Write a simple MATLAB program that will estimate the area of a circle using the lower and upper bounds (using triangles). The user will input the diameter of the circle and the desired accuracy (relative error ) and the program must run
Calculate the Air flow required in CFM to transfer 5,004 BTU/Hour in an HVAC duct given that the temperature difference (Delta-T) between the room and the supply air is 23 DegF.
An aluminum alloy tube with an outside diameter of 2.9 in. and a wall thickness of 0.32 in. is used as a 19-ft-long column. Assume that E = 8300 ksi and that pinned connections are used at each end of the column.
A trapezoidal channel with a bottom width of 4 feet and side slopes 2:1 (H:V) and a bed slope of 1 percent conveys a discharge of 50,000 gpm. Assume n = 0.025. Compute the normal depth.
A soil specimen has a water content of 18% and a wet unit weight of 118.5 lb/cu. ft. The specific gravity of solids is found to be 2.72. Find the:
The dye appears 14 days later in an observation well 75 ft away from the injection point. Compute the seepage velocity and estimate the hydraulic gradient in the aquifer if the porosity of the soil is 42%.
Describe the reasons for enhancing drainage and situation where it is required. Explain some of the detrimental effects of drainage. Describe the types of drainage system indicating suitability criteria. 200- 250 word limit
assume the readings on thermometers are normally distibuted with a mean of 0C and a standard feviation of 1.00C. Find the probability that a radndomly selected thermometer reads greater than 1.23 and draw a sketch of the region.
Comparison between steel structures and aluminium structures, To make a comparison between Eurocode 3 and Eurocode 9 outlining the main differences
For the soil and foundation conditions in fig. 1, determine the time required to reach 75% consolidation in the clay given the consolidation test results and determine the coefficient of consolidation
A ciricular sewer is laid on a slope of 0.5%. What diameter is required if the concrete pipe is to carry 25 cfs If the desired design mean suction velocity is between 3 and 7 ft/s, is the design acceptable
Assuming unit surface area, find the conductive heat loss through the furnace wall and the temperature at the interface of the fire clay and red brick.
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