The inlet temperature of an air compressor is T₁-300°K and the outlet temperature is T2-500°K. The compressor operates at a mass flow rate of 0.093kg/sec and the heat lost during the compression is 10kJ/kg. Assume that the air is an ideal gas with Cp=1.004 kJ/(kg°K). Calculate the mechanical power needed to be provided to the compressor shaft. Present your answer in kilo- Watts (kJ/sec).

The inlet temperature of an air compressor is T₁-300°K and the outlet temperature is T2-500°K. The compressor operates at a mass flow rate of 0.093kg/sec and the heat lost during the compression is 10kJ/kg. Assume that the air is an ideal gas with Cp=1.004 kJ/(kg°K). Calculate the mechanical power needed to be provided to the compressor shaft. Present your answer in kilo- Watts (kJ/sec).

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Steam (water vapor) enters a stainless steel tube with inner diameter 4cm at 300°C and 60 bar absolute pressure, with a velocity of 8.00 m/s. The steam exits the tube at 300°C and 40 bar absolute pressure. a. Assuming the water vapor behaves as an ideal gas, calculate the steam mass flow rate and the change in kinetic energy (in Watts). b. Using the specific volume values from table B.7, calculate the steam mass flow rate and the change in kinetic energy (in Watts).
The feed to a compressor is superheated steam at 310°C and 40 bar. It enters the compressor at a velocity of 17 m/s. The pipe inlet inside diameter is 0.25 m. The discharging pipe, after the compressor, has a smaller inside diameter and the discharge velocity is 120 m/s. The exit of the compressor is superheated steam at 350°C and 85 bar absolute. Heat loss from the compressor to the surroundings is 3 kW. Determine the compressor horsepower
CO2 is needed in a surgical suite for abdominal laparoscopic surgery. You have already designed a nozzle to step down the pressure from the gas cylinder to the delivery hose. The well-insulated delivery hose has a 2.2 mm inner diameter. The inlet conditions to the delivery hose are 103 psia and 17°C. Typically, the surgeon uses 4 to 6 L/min of gas at pressures between 10 to 20 mm Hg to inflate the peritoneal cavity; however, the delivery system must be able to provide flow rate of 17.5 L/min at 20.0 mm Hg for safety. The surgeon will use a pin valve to control the flow rate and maintain the operating space. The gas temperature should not be any colder than 10°C when delivered to patient, or tissue damage might occur. Determine the acceptable delivery hose length to meet the surgical criteria. State assumptions.
Please show your solution step by step and clearly thank you
Solve for the fuel consumption in g/min if air (h = 302 kJ/kg) and fuel (43,207 kJ/kg) enter the chamber with gases leaving it at an enthalpy of 616 kJ/kg. The air-fuel ratio in kg is seventeen. The house which uses the chamber for heating purposes requires 16.7 kW of heat.
Air (MW=29 g/mol) at 115.00 kPa and 285.00 is compressed steadily to 600.0 kPa. The mass flow rate of the air is 2.00 kg/s and a heat loss of 32.1 kW occurs during the process. You may assume that changes in kinetic and potential energy are negligible, the temperature of the surroundings is 25 ∘C, and that the CP of air is 3.5 R. Given the compressor operates with a second law (reversible) efficiency of 0.60,calculate the following. What is the actual work interaction term in kW? What is the actual exit temperature of the air in Celcius?
An eight-cylinder, four-stroke engine of 9 cm bore and 8 cm stroke with a compression ratio of 7 is tested at 4500 rev/min on a dynamometer which has 54 cm arm. During a 10 minutes test the dynamometer scale beam reading was 42 kg and the engine consumed 4.4 kg of gasoline having a calorific value of 44000 kJ/kg. Air at 27C and 1 bar was supplied to the carburettor at the rate of 6 kg/min. Take R for air = 287 kJ/(kg·K). Find: (1) the brake power delivered (bp), (2) the brake mean effective pressure (bmep), (3) the brake specific fuel consumption (bsfc), (4) the brake specific air consumption (bsac), (5) the brake thermal efficiency (b, th), (6) the volumetric efficiency (vol), and (7) the air-fuel ratio (A/F) on mass basis. Draw the simplified schematic diagram of the plant showing all the necessary data dis- played on it. ______
Argon is accelerated in a nozzle from 32 m/s at 666 K to 441 m/s and 196 kPa. If the heat loss is equal to 5.1 kJ/kg, determine the gas temperature at outlet in K to 1 decimal place. Take the gas constant as 0.2 (kPa m3)/(kg K) and assume constant specific heats cp=0.5 kJ/(kg K) and cv=0.3 kJ/(kg K).
Solve for the fuel consumption in g/min if air (h = 302 kJ/kg) and fuel (43,207 kJ/kg) enter the chamber with gases leaving it at an enthalpy of 616 kJ/kg. The air-fuel ratio in kg is seventeen. The house which uses the chamber for heating purposes requires 16.7 kW of heat.
At the inlet of a steam turbine, the pressure of the steam is P1 = 1 MPa, temperature T1 = 3000C and the outlet pressure is P2 = 7.5 kPa dryness degree x2 = 0.90. Since the ambient temperature To = 200C ambient pressure Po = 100 kPa and the changes in kinetic potential energies can be neglected; Calculate the work done by the steam. If an isentropic expansion could occur between inlet conditions and outlet pressure, how much work would the steam have to do? Show both real and isentropic expansion (with saturation curves and T, x, P, values) in the T-s diagram. Calculate the maximum work that can be obtained from unit mass steam at the specified inlet conditions. Calculate the maximum work that can be obtained from unit mass steam between inlet and outlet points.
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 PLEASE thanks