The range of discharge pressure of the blower is 500mmH2O ~ 2.0kgf/cm2, guage. How to convert this to kPa, guage?
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The range of discharge pressure of the blower is 500mmH2O ~ 2.0kgf/cm2, guage. How to convert this to kPa, guage?
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- Air flows isentropically from the reservoir where p=300 kPa, and T= 500 K, to section 1 of the channel where A1= 0.2 m² and v1= 550 m/s count: a). Ma1 b). T1 c). P1 d). M e). A* is the flow choked?Which of the ff are assumptions followed by the Bernoulli eq ? the pump is working at 100% efficiency , skin friction is negligible, the flow of the fluid is strictly turbulent, the velocity head is negligibleWhat is the pressure drop in the turbine? Answer: 1176.91 kPa (replace “turbine pressure drop” for “pump pressure increase”)
- Define the Maximum Power Generation by a Wind Turbine.The general energy balance equation for a turbine is: Qnet + Wnet = ΔmH + ΔKE + ΔPE What does it mean when the term ΔmH is negative? Describe what changes occured to the fluid's energy, and where it went.What is the over all efficiency of the turbine if the power developed is 12 MW at the head of 150 m and the nozzle discharges 10 m³ per second A. 70.65 B. 89.23 C. 81.55 D. 78.99
- Helium gas enters a convergent channel with T1=400oC P1=100 kPa and Ma1=0.25. Assuming the flow is steady and isentropic, find the features where the flow area decreases by 25%.An existing impulse turbine-generator installation operates at 450 rpm under a net Head of 520 m. The output current is 60 cycles per second. If a single 18-cm diameter waterjet is used, Cv = 0.98, Øe = 0.45 and ηT = 0.85. Find the flow through turbine in m3/sec.The Allis-Chalmers D30LR centrifugal compressor delivers33,000 ft3/min of SO2 with a pressure change from 14.0 to18.0 lbf/in2 absolute using an 800-hp motor at 3550 r/min.What is the overall efficiency? What will the flow rate andDp be at 3000 r/min? Estimate the diameter of the impeller.
- Explain the working of a Delaval turbine with neat sketches.4. Air flows isentropically through the channel To = 300 ° C. both ends have an identical area that is A = 25 cm², pressure p1 = 120 kPa and p2 = 60 kPa. Determine : a). Mass flow rate, b). Throat area C). Ma2There are two broad categories of turbomachinery, pumps and turbines. Discuss the differencesbetween pumps and turbines from their purpose and energy conversion process points of view(minimum 100 words).