4.1] A multi-storied shopping mall has installed 5 x 110 TR reciprocating compressors of which  four compressors are in use and fully loaded for 14 hours per day. The specific power  consumption of reciprocating compressor is 0.8 kW/TR. Due to higher energy cost the  shopping mall chief engineer has decided to replace reciprocating compressors with screw  compressors having specific power consumption of 0.65 kW/TR. The chief engineer needs  following input from energy consultant:  • Annual energy bill savings (for 320 days operation). Present unit cost is $ 6.00 per  kWh? (show all calculations)

8. A turbine passes 67.5 kg/h of steam at 200 km/h at 8 MPa and leaves at 0.5 MPa as wet steam with a speed of 90 km/h and a specific volume of 0.189 m3/kg. d. What must be the steam input conditions (T,H) to turn on a device that consumes 30 kW? and. What is the mass and volumetric flow rate of the water at the outlet? F. What is the input and output area?

5. Air entering at 70°F and atmospheric pressure is to be compressed to 4000 Ib/in² gauge in a reciprocating compressor at the rate of 125 std ft /min. How many stages should be used? What is the theoretical shaft work per standard cubic foot for frictionless adiabatc compression? What is the brake horsepower if the efficiency of each stage is 85 percent? For air y = 1.40.? What is the discharge temperature of the air from the first stage?

i need the answer quickly

I need clear handwritten solution explaining every steps.

- Categorize air-compressor to dynamic and positive-displacing compressors and distinguish each main category in terms of working concept and flow direction- Distinguish the major differences between centrifugal compressors and axial compressors- List the different types of industrial compressors, provide a brief summary and assessment of each type- Discuss compressor faults and potential hazards

Answer  1.8 and 1.9

QUESTION2 A single-stage double-acting air compressor delivers air at 7.5bar. The pressure and temperature at the end of suction stroke are 1bar and 25°C. It delivers 2.2m3 of free air per minute when the compressor is running at 310rev/min. The clearance volume is 5% of stroke volume. The pressure and temperature of ambient air are 1.03bar and 20°C. Take: index of compression = 1.25 and index of expansion = 1.3. %3D %3D Determine: 2.1 volumetric efficiency of the compressor; 2.2 diameter and stroke of the cylinder if both are equal; 2.3 indicated power of the compressor and Brake power (B.P.) if the mechanical efficiency is 85%. 2.4 Draw the P-V diagram will all the relevant information.

A single-stage, single-acting air compressor running at 1000 rev/min delivers air at 2.5 MPa bar. For this purpose the induction and free air conditions can be taken as 1 atm and 15 °C, and the FAD as 0.25 m³/min. The clearance volume is 3% of the swept volume and the stroke/bore ratio is 1.2/1. Determine; (i) the bore and stroke; the swept volume, Vs; the delivery temperature, T2; the volumetric efficiency; the indicated power; and the isothermal efficiency.

A single reciprocating compressor takes 1m³ of air per minute and 1.013 bar and 15 degree Celsius and delivers at 7 bar. Assuming Adiabatic law(n=1.35) and no clearance. Calculate: Mass flow rate Delivery temperature Indicated power This same compressor is now driven at 300 rpm, has a stroke bore ratio of (1.5:1), it has a mechanical efficiency for the compressor of 85% and motor transmission efficiency of 90%. Calculate: Volume per cycle Cylinder bore diameter Power to the compressor Motor power needed The isothermal power The isothermal efficiency