What are the health effects of the following pollutants?

Carbon monoxide

Airborne particles

Ultrafine particles

Bioaerosols

What are the EMS elements of the Denning Cycle? Describe in relative detail the basic elements of EMS

A compressor receives 0.1 kg/s R-134a at 150 kPa, -10 degrees C and delivers it at 1000 kPa, 40oC. The power input is measured to be 3 kW. The compressor has heat transfer to air at 100 kPa coming in at 20 degrees C and leaving at 25 degrees C.

I'm trying to find the mass flow rate of air, BUT can you please just show me the energy balance and Schematic to set this up. JUST the energy balance and Schematic.

Water is drawn from a reservoir and pumped an equivalent length of 2 miles through a horizontal, circular duct of 10-in. i.d. (wall roughness k = 0.01 ft). At the end of this duct, the flow is divided into a 4- and a 3-in. schedule 40 steel pipe. The 4-in. line has an equivalent length of 200 ft. and discharges to the atmosphere at a point 50 ft. above the surface of the water in the reservoir. This flow must be maintained at 1000 gal/min. The 3-in. line discharges to the atmosphere at a point 700 ft. from the junction at the reservoir level. The pump you are considering has an efficiency of 70. Kinetic energy effects can be ignored. Determine how much horsepower is needed for the system.

In a large boiler with several burners, why is it desirable to balance burner performance? What analytical measurements are helpful?

A cylindrical tank with inner diameter 2.0 m is designed to operate as a fluidized bed reactor for a heterogeneous catalytic reaction. The tank is loaded with a random packing of cubic particles to a height of 4.0 m with voidage 0.4 before the fluidization process. The density and length of each side of the cubic particles are 2600 kg m-3 and 1.0 cm respectively. During operation, a liquid reactant with density 1000 kg m-3 and viscosity 1.0 x 10-3 Pa·s is passed uniformly upwards through the bed to fluidize the particles. Determine the inlet superficial velocity U that needs to be applied to achieve a bed height of 6.0 m during operation of the fluidized bed reactor.

velocity: 24.9m/s

Pressure: 1 atm

diameter: 1.02m

area((pi/4)*D²​): 0.817m^²

^​Wet bulb/ dry bulb temp: 4.5^​oC/26.8^oC

Relative humidity:19.6%

Find dry air flow rate in kg/s.

Propane gas at 1 bar and 35°C is compressed to a final state of 135 bar and 195°C. Estimate the molar volume of the propane in the final state and the enthalpy and entropy changes for the process. In its initial state, propane may be assumed an ideal gas.

Diborane is used in silicon chip manufacture. One facility uses a 500-lb bottle. If the entire bottle is released continuously during a 20-min period. It is a clear, sunny day with a 5mph wind. Assume that the release is at ground level

a. Determine the location of the 5 mg/m3 ground-level isopleth.

b. Assume now that the bottle ruptures and that the entire contents of diborane are released instantaneously. Determine, at 10 min after the release,

(1) The location of the vapor cloud. (2) The location of the 5 mg/m3 isopleth. (3) The concentration at the center of the cloud.

(4) The total dosage received by an individual standing on the downwind axis at the 15-min downwind location.

(5) How far and long the cloud will need to travel to reduce the maximum concentration to 5 mg/m3

Work is highly appreciated, thanks!

A small diameter tube closed at one end was filled with benzene to within 20 mm from the top of the tube and maintained at 295 K and atm pressure of 100 kPa with a gentle stream of air blowing across the top. After 30 kilo-seconds (30 x 103 s) the liquid level has fallen to 25.8 mm. The vapor pressure of benzene at 295 K is 13.3 kPa. Calculate the diffusivity of benzene in air. Density of benzene = 800 kg/m3. Molecular weight of benzene = 78 kg/kg mol.

200 MMscfd natural gas that contains 20vol% CO2 and no H2S is to be transported 60 miles through pipelines to a natural gas liquefaction plant where gas sweetening and dehydration will take place. Suggest:

Minimum specifications for the gas as it enters the pipeline.

Suitable processing sequence for the field facility.

4-20. One accident mitigation procedure is called emergency material transfer, in which the material is transported away from the accident site before it becomes involved. We plan on mitigating a crude oil tank fire scenario by pumping the tank empty in 1 hr total time. The crude oil storage tank is 30 m in diameter, and the crude oil is typically at a level of 9 m. The transfer will be accomplished by pumping the crude oil through a 200-mm (internal diameter) new commercial steel pipe to another tank 40 m in diameter and 10 m high. The pipeline represents 50 m of equivalent pipe.

a. Estimate the minimum pump size (in HP) required to pump the entire tank empty in 1 hr. Assume a pump efficiency of 80%.

b. If a 100-HP pump (80% efficient) is available, how long will it take to empty the tank?

c. What conclusions can be drawn about the viability of this approach? The density of the crude oil is 928 kg/m3 with a viscosity of 0.004 kg/m s.

8.56. Humid air at 70°C and 1.0 atm with 6°C of superheat is fed to a condenser. Gas and liquid streams leave the condenser in equilibrium at 25°C and 1 atm. (a) Assume a basis of calculation of 100 mol inlet air, draw and label a flowchart (including Q in the labeling), and carry out a degree-of-freedom analysis to verify that all labeled variables can be determined. (b) Write in order the equations you would solve to calculate the mass of water condensed (kg) per cubic meter of air fed to the condenser. Circle the unknown variable for which you would solve each equation. Do not do any of the calculations. (c) Prepare an inlet–outlet enthalpy table, inserting labels for unknown specific enthalpies (H^1, H^2, . . .). Write expressions for the labeled specific enthalpies, substituting values or formulas for heat capacities and latent heats but not calculating the values of the specific enthalpies. Then write an expression for the rate at which heat must be transferred from the unit (kJ per cubic meter of air fed to the condenser). (d) Solve your equations by hand to calculate kg H2O condensed/m3 air fed and kJ transferred/m3 air fed. (e) What cooling rate (kW) would be required to process 250 m3 air fed/h?

What difficulties might be encountered if water were used as the thermometric substance in a liquid-in-glass thermometer?