A house built on a riverside is to be cooled in summer by utilizing the cool water of the river. A 15-m-long section of a circular stainless-steel duct of 20-cm diameter passes through the water. Air flows through the underwater section of the duct at 3 m/s at an average temperature of 15°C. For an overall fan efficiency of 62 percent, determine the fan power needed to overcome the flow resistance in this section of the duct.

Q: A rectangular duct made of commercial steel is used to channel air at 1 atm and 35°C at an average…

A:

Q: A 3-m-high large tank is initially filled with water. The tank water surface is open to the…

A: Draw a diagram for the problem. According to the question, the kinetic energy correction factor can…

Q: Water is to be withdrawn from an 11.2-m-high water reservoir by drilling a 4.1-cm-diameter hole at…

A:

Q: A bathroom extractor fan being sold on Amazon has a duct diameter of 10.0 cm. It extracts air from a…

A: First, we need to calculate the area of the duct: A=π4·102=25π=78.54 cm2 Now use the continuity…

Q: A reciprocating air compressor serves an air operated sinking pump operating at 760 kPag and 6.20…

A: For solution refer below images.

Q: The minimum fresh air requirement of a residential building is specified to be 0.35 air changes per…

A: Given data: The ISHRAE standard for air changes per hour is I = 0.35/hr The height of room is h =…

Q: Determine the temperature of hot flue gases & efficiency of chimney for maximum discharge through…

A: Given:Height of the chimney, h=80 mTa=27+273=300 KTemperature of hot gas, Tg=110+273Tg=383 Kmass of…

Q: Water at 4°C (p-998 kg/m and u-1.52 x 103 Pa-s) is flowing steadily through a 3 mm diameter circular…

A:

Q: 02: Water is to be withdrawn from a 3 m high water reservoir by drilling a 1.5 cm diameter hole at…

A: Volume flow rate of a fluid through a section is rate at which volume of the fluid flows, and it can…

Q: Ol at 20°C (p = 888.1 kg/m² and u = 0.8374 kg/m - s) is flowing steadily in a 1.25 cm-diameter,…

A:

Q: The compressed air requirements of a manufacturing facility are met by a 120-hp compressor that…

A: Given data as per question Length of pipe = 9m Diameter of pipe = 22 cm = 0.22 m Flow rate = 0.27…

Q: In a hydroelectric power plant, water at 20°C is supplied to the turbine at a rate of 0.55 m³/s…

A: Let us assume that flow is incompressible with steady flowrate. Disregarding the minor losses…

Q: The 64-W fan in an aircraft environmental system is to circulate air through the ducting. An…

A: As fluid flow takes place across fan, it is treated as open system and hence control volume approach…

Q: Electrical power is to be generated by installing a hydraulic turbine generator at asite 70 m below…

A:

Q: Water is flowing through a venturi meter whose diameter is 7 cm at the entrance part and 4 cm at the…

A:

Q: Air is flowing through a venturi meter whose diameter is 2.6 in at the entrance part (location 1)…

A:

Q: Water at 15°C is drained from a large reservoir using two horizontal plastic pipes connected in…

A: Given data: The temperature of water Tw=15oC The length of first pipe is L1=20 m The diameter of the…

Q: A water fountain is to be installed at a remote location by attaching a cast iron pipe directly to a…

A: Take the following assumptions for the flow. The flow is steady and incompressible. The entrance…

Q: Air is flowing through a venture-meter whose diameter is 2.6 in at the entrance part (location 1)…

A:

Q: Air enters a 12-cm-diameter adiabatic duct with inlet conditions of V1 = 150 m/s, T1 = 500 K, and P1…

A: Write the formula to calculate the speed of sound at the inlet. c1=kRT1 Here, T1 is the inlet…

Q: Water is to be withdrawn from an 8-m-high water reservoir by drilling a 2.2-cm-diameter hole at the…

A: Using the energy equation,

Q: Water at 200 kPa and 355K (H=343.3 kJ/kg) enters the straight horizontal pipe at velocity 3 m/s…

A: Heat supplied is the heat supplied for power generation or for the useful work of a machine. This…

Q: A large tank is initially filled with water 4 m above the center of a sharp-edged 10-cm-diameter…

A: Given,  Height of the water in the tank, H= 4 m, Diameter of a orifice, d=10 cm= 0.1m, Head loss in…

Q: An oil cooler consists of a system of nested identically centered pipes. The inner tube of this…

A: Given: Inner diameter of the inner tube: →d1=1.4 Cm=0.014 m Thickness of the tube: →t=0.2 Cm=0.002 m…

Q: A 6cm diameter horizontal water pipe expands to a 10cm diameter pipe. The average velocity and…

A:

Q: Water at 60F (ρ = 62.36 lbm/ft3 and μ = 7.536 x10 -4 lbm/ft·s)  is flowing steadily in a…

A:

Q: Knowing the density, P and the volumetric flow rate, the mass flow rate, mdot can be calculate using…

A: Given: Density = ρVolumetric flow rate = ϑ Let, mdot=mass flow rate

Q: kg Water (Pw μω m³ = 1.8 x 10-³ Pa s) flows through the shower system shown below. The pipe has a…

A: VA = 1.2 m/spipe roughness e = 0.15 mmdensity of water  = 1000 kg/m3Viscosity of water = 1.8 x 10-3…

Q: In a hydroelectric power plant, water at 20°C is supplied to the turbine at a rate of 0.55 m3/s…

A: From tables properties of water, ρ = 998 kg/m3 μ = 1.002 x 10-3 Pa s Roughness of cast iron pipe is…

Q: Water in a duct of area 0.1 m2 has an average velocity of 7 m/s. The duct tapers slowly to 0.4 m2.…

A: Given data: The area of the duct at section 1 is, A1 = 0.1 m2. The average velocity at section 1…

Q: The drinking water needs of an office are met by large water bottles.  One end of a 0.6-cm diameter…

A: Solution: d = 0.6 cm

Q: The turbines in a hydroelectric plant are fed by water falling from a 50 m height. Assuming 91%…

A:

Q: a rectangular duct made of commercial steel is used to channel air at 1 atm and 35°C at an avergae…

A:

Q: Consider the flow of oil with p = 894 kg/m³ and µ = 2.33 kg/m.s in a 40 cm diameter pipeline at an…

A:

Q: A flow nozzle equipped with a differential pressure gage is used to measure the flow rate of water…

A: Assumptions flow is steady and incompressible discharge coefficient for nozzle (Cd) = 0.96.

Q: lar collecting panel 20 m2 in area receives solar energy at the rate of 750 W/m2. It is estimated…

A: we have to evaluate the outlet temperature, we will use simple calorimetry

Q: In a hydroelectric power plant, water at 20℃ is supplied to the turbine at 1.2 m3/s through a 200 m…

A:

Q: The compressed air requirements of a textile factory are met by a large compressor that draws in 0.6…

A: Properties of air at 60 degrees Celsius are: The roughness of the galvanized steel pipe is Given…

Q: The water is to be pumped from the lower reservoir to the upper reservoir at a flow rate of 8 kg/s.…

A: Pump  Pump is a hydraulic device which is used to lift liquid from low height to the high elevation.…

Q: Determine the final temperature of the water at the second tank

A: here, I took some assumptions and some values of water's property.If there is change in its values…

Q: A 3-m-high large tank is initially filled with water. The tank water surface is open to the…

A: From the given data, The static suction head of the pump, hs=-3m The static discharge head of the…

Q: The drinking water needs of an office are met by large water bottles. One end of a 0.35-in-diameter,…

A: The diameter of the plastic hose is D=0.35 in. The total length of the plastic hose is L=6 ft. The…