Multi-evaporator system with individual multiple expansion compressors and valves
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- 1000CFM of air are compressed at constant temperature of 85°F and 198 psia to 580 psia. For both nonflow and steady flow, compute ⌠pdv, -⌠Vdp, ▲S and ▲H.2. Explain how to increase the coefficient of performance of a single stage vapour compression system. Illustrate your analysis through charts (P-h and T-s diagrams)A large commercial air-conditioning unit processess 5 kg/s of atmospheric air. The air enters at a pressure of 105 KPa. Its dry-bulb temperatue of 20 °C, a wet-bulb temperatue of 10 °C, and a pressure of 100 kPa. How much water is being removed fom the air in one hour? Conver to liters/hr
- For air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine: a.Mass flow rate [kg/s] b. Inlet and outlet velocity [m/s] c.Power required to run the compressor [kW]derive the general formula for the intercooling related to the number of stage of compressorFor air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine: a.Mass flow rate [kg/s] SHOW AND EXPLAIN ALL STEPS PLEASE thanks
- For air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine: a.Mass flow rate [kg/s] SHOW AND EXPLAIN ALL STEPS PLEASEAssess the different types of industrial compressor and identify justifiable applications for each while focusing on the working principle and flow directionQ . It is proposed to pump 8,000 kg/h of toluene at 114 oC and 1.1 atm abs pressure from the reboilerof a distillation tower to a second distillation unit without cooling the toluene before it enters thepump. If the friction loss in the line between the reboiler and pump is 7 kN/m2 and the density oftoluene is 866 kg/m3 . How far above the pump must the liquid level in the reboiler be maintained togive a net positive suction head of 3.5 m? Calculate the power required to drive the pump if the pumpis to elevate the toluene 10 m. The pressure in the second unit is atmospheric and the friction loss inthe discharge line is 35 kN/m2 . The velocity in the pump discharge line is 4 m/s.
- The evaporator design temperature may in some cases operate at a slightly ____(higher or lower) pressure and temperature on high-efficiency equipment because the evaporator is larger.A chemicals company wants to optimize the power consumption of their air compressors. Their Design Engineers proposed to replace their Single-stage Adiabatic Compressors with the following: a. Isothermal Compressorb. Two-stage Compressor with intercoolingc. Four-stage Compressor with intercooling In order to justify the replacement, the percentage of the energy per mass (J/g) saved by each proposed compressor system should be calculated. Savings should be at least 40%. Determine which of the three proposed compressors will meet the criterion. The flow rate of air required is 600 ft3/min at 70 °F and 14.7 psi, which should be compressed to a final pressure of 2,000 psig. The relative molecular mass of the gas is 28, isentropic constant is 1.40, and density of air is 1.204 kg/m3.Task 1Derive the non-flow and flow energy equations from first thermodynamic principles. Task 2Apply the steady flow energy equation to nozzle, compressor, turbine, boiler, and mixing chamber.