Provide the evidence of describing how the reciprocating air compressors (applicable to a particular purpose) may be used to save energy cost and still prevent disadvantages on other
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Provide the evidence of describing how the reciprocating air compressors (applicable to a particular purpose) may be used to save energy cost and still prevent disadvantages on other
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- How does the compressor lubrication system differ for reciprocating and centrifugal compressors?What are higher-efficiency refrigerant blends that can be used as long-term replacements for R-22 in residential and light-commercial air-conditioning applications?Differentiate the operation, structure and usage of (1) reciprocating air compressors and (2) rotaryscrew type air compressor.
- 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/m3.1. In less than 100 words, describe how the reciprocating air compressors (applicable to a particular purpose) can be improved in terms of sustainability in terms of energy use and pollution effect. 2. Cost implications or projections data/calculations from the idea(s)What are the beneficial and advantageous features of the developed AirDisc air-conditioner? Is this invention can address some problems of our society? How?
- Q.18 What are the different types of compressors used in vapour compression plants? What are their limitations?Pls. Answer thank you! A turbo-charged, 16 cylinder, Vee-type diesel engine has an air consumption of 3,000 kg/hr per cylinder at rated load and speed. This air is drawn in through a filter by a centrifugal compressor directly connected to the exhaust gas turbine. The temperature of the air from the compressor is 135°C and a counter flow air cooler reduces the air temperature to 45°C before it goes to the engine suction header. Cooling water enters air cooler at 30°C and leaves at 40°C. Calculate the log mean temperature difference in oC.A trubo-charge, 16 cylinder, vee-type diesel engine has an air comsumpyion of 3000 kg/hr per cylinder at rate load and speed. this air is drawn in through a filter by a centrifugal compressor directly connected to the exhaust gas turbine. the temperature of the air from the compressor to 145 C and a counter flow air cooler reduced the air temperature to 45 C. before it goes to the engine suction header. cooling water enters air at 30 C and leaves at 38 C. calculate the quantity of the cooling water in m/hr required to cool the total air requirement of the engine at rate load and speed. ( hint: use AMTD)
- e. a) A reciprocating compressor is to compress 47 L/s of dry air from 1 atm and 32 deg C to 6 atm. The clearance in the compressor is 0.05 and the overall efficiency is 65.6%. Calculate the (a) actual power to drive the compressor assuming isentropic compression. a. 15 kW, 5.1 L b. 20 kW, 9.1 L c. 18 kW, 7.6 L d. 17 kW, 8.1 L A reciprocating compressor is to compress 47 L/s of dry air from 1 atm and 32 deg C to 6 atm. The clearance in the compressor is 0.05 and the overall efficiency is 65.6%. Calculate the (b) and piston displacement if the compressor is double-acting and operating at 200 strokes per minute. a. 5.1 L b. 9.1 L c. 7.6 L d. 8.1 Lwhat are the factors affecting axial compressor stage pressure ratio? Explain briefly.The following data were obtained from a performance test of a 10 x 9-cm single acting, water jacketed two-stage air compressor: Pressures: Atmospheric, 102 kPaa; leaving first-stage, 634 kPaa; leaving second-stage, 4.20 MPa. Temperatures: Atmospheric, 240C; leaving first-stage, 1080C; entering 2nd stage, 250C; leaving 2nd stage, 1270C Compressor speed, 648 rpm Power input to motor, 5.65 kW Motor and belt efficiency, 81.5% The following are calculated from test data: Air flow rate, 0.387 ??⁄??? Compression exponents: 1st stage 1.15; 2nd Stage, 1.2 Calculate: a) Approximate indicated power b) Power for isothermal compression c) Shaft power d) 1st stage piston displacement e) Actual volumetric efficiency f) Isothermal compression efficiency g) Mechanical efficiency based on the approximate indicated power h) Over-all efficiency of the compressor