### Calculate the density of the air in the round section

Assignment Help Mechanical Engineering
##### Reference no: EM13708187

At one section in an air distribution system, air at 14.7 psi and 100degree F has a velocity of 1200 ft/min a and the duct is 12 in x12 in square. At another section the duct is round with a diameter of 18 inches and the velocity is 900 ft/min. Calculate: a) the density of the air in the round section. b) The weight flow rate of air in lb/hr

### Previous Q& A

#### Determine the specific volume of the rock

A rock weighs 90.8 N in air and 45 N when completely submerged in water. Determine the specific volume of the rock in m3/kg

#### A turbine extracts energy from water flowing through

A turbine extracts energy from water flowing through a 11-cm-diameter pipe at a pressure of 700 kPa with an average velocity of 11 m/s. If the turbine is 90 percent efficient, how much energy can be produced if the water is emitted from the turbine t..

#### Determine the temperature of the air and the initial volume

1750g of air performs an expansion work of 3100kJ on the surrounding as it expands isothermally to a pressure of 63000kPa ad a volume of 0.065 cubic meters. Determine the temperature of the air and the initial volume.

#### Undergoes a reversible adiabatic process

In a polytropic process, a fluid is compressed to 2.75 times its initial pressure, whereas its temperature becomes1.65 times. What is the fluids index of expansion, n? 1.2kg of Air at a pressure of 2.15MPa and a temperature of 585K, undergoes a rever..

#### Determine the mass of the air-initial temperature of the air

Air exerts a pressure of 900KPa within a 0.45 cubic meter container of fixed volume. It is cooled such that the pressure falls to 3.25bar. The temperature of the air is then measured and was found to be 285C. Determine the mass of the air, the initia..

#### Determine power developed by the turbine

Air enters a gas turbine with a velocity of 165m/s and a specific enthalphy of 2800KJ/kg and leaves with a velocity of 135m/s and specific enthalpy of 2175KJ/kg. The heat lost to the surrounding turbine is 32.5KJ/kg. Determine power developed by the ..

#### Fundamentals of fluid mechanics

Liquid water in a pumped flow system experiences varying pressures as it circulates through the system. One concern in designing any such system is to ensure that cavitation does not occur. If the water temperature during operation of a particular sy..

#### Water is in a closed rigid container with a volume

Five kg of water is in a closed rigid container with a volume of 0.3935 m3 and a pressure of 5.0 MPa. Draw and label the states and process on a P-v diagram and determine the amount of heat removed and work done when the pressure is reduced to 1.5 MP..

#### Device undergoes a constant temperature process

Water as a saturated vapor at 600 Â°F is contained in a piston-cylinder device that has an initial volume of 30 ft3. The device undergoes a constant temperature process, until the water reaches the saturated liquid condition. Draw and label the state..

#### Nitrogen in a piston-cylinder assembly

Nitrogen in a piston-cylinder assembly undergoes a polytropic expansion process. Initially, nitrogen is at 125 C and 144 kPa. Then it is expanded to a state of 102 kPa and 90 C. determine the heat transfer and work for the process considering no chan..

### Similar Q& A

#### How larger surface edge crack can the advanced ceramics

conventional ceramics have a fracture toughness of about 5 while advanced ceramics may have 20. determine1 how larger

#### If 20 kgs flows out of the condenser what is the mass flow

an open feedwater hearter operating at steady state accepts superheated steam at 500kpa and 200degc and mixes the

#### Consider a steam rankine cycle with superheat the maximum

consider a steam rankine cycle with superheat. the maximum temperature and pressure are 540 c and 60 bar and the

#### If the tank is well insulated what will be the pressure in

a 0.2 m3 tank containing helium at bar and 22 c will be used to supply 4.5 moles per minute of helium at atmospheric

#### The system is extremely clean and quiet and the flow stays

water at 24 degree c flows at 0.8 ms in a smooth 1.5 cm i.d. tube that is kept at 27 degree c. the system is extremely

#### Consider hydrogen to be ideal gas with constant specific

hydrogen gas at 35ordmc and unknown pressure state 1 enters a steady insulated system which has no work interaction

#### Directional properties as a single crystal

Examples of materials that have directional properties as a single crystal but are isotropic in their polycrystalline form.

#### Knowing the coefficient of restitution between a and b is

a 2-kg ball b is traveling horizontally at 3 ms when it strikes 2-kg ball a. ball a is initially at rest and is

#### If the power generated by the turbine is 75 mw determine

steam expands in a turbine steadily at a rate of 36048 kgh entering at 8 mpa and 600degc and leaving at 20 kpa as a

#### What is the smallest allowable length of the robot arm

A robot arm carrying a 2.75-lb package is moving in a horizontal circle at 4 miles/hr. The arm is gradually shortened for the first 0.11 s of its motion, changing the radius of the circle. The maximum acceleration the package can withstand without da..

#### Find how much should be cut off from free length of the

a helix compression spring is manufactured using the following parametersod1.00id.790wire dia 0.105fo 40.49 lbf

#### Ewb project

write a reflective assessment of how you rate yourself against these competencies and Describe the main learning outcomes that this course and the EWB project have generated for you over the semester. Have any of these learning outcomes been a ..