Recent content by dilipbhanu

Bed voidage and friction factor is confusing me

I am a non technical innovator trying to develop a new product. Can someone help me calculate pressure drop and flowrate across a cylinder packed with uniform spheres of 10mm diameter. I found this online but unable to calculate...

Hi, We have seen water boiling at low pressures (vacuum jars), Will Oil also boil the same way in vacuum jar? Dilip

I am using a 5HP (3728.5 Watts) pump to create hydrostatic head. Pump efficiency is 52.6% at duty head of 25 Meters with flow rate of 8LPS Hence, ignoring pump losses, I have taken Water Horse Power (WHP) 1962 Watts as input energy and trying to convert this energy to mechanical energy at...

A centrifugal pump is used to create hydrostatic head. Gauge Pressure: 2.5 kg/cm2 = 25 Meter of Water column Flow = 8lps Input Watts = Mass*Gravity*Head = 25*9.81*8 = 1962 Watts

Hi, I have developed a 2KW hydro turbine prototype with a generator connected. Generator Type - Brushless DC Permanent Magnet (16Pol-18Slot) (2000Watts, 2000 RPM, 54VDC) Generator test report (by manufacturer) is given below; RPM Volts Current 1000 29.8...

The RPM has been read with a non contact tachometer, while the Torque has been calculated theatrically based on the input forces (Water Pressure and Flowrate) Motive fluid = Water Pump Gauge Pressure = 29.86 PSI Flow rate = Water leaving the turbine = 10LPS @ 19.70 m/s (linear Velocity) Force...

Thanks a ton. A little more help. My Turbine is a reaction turbine of 6 inch diameter. It rotates at 2500 RPM generating 15N.m of Torque. The mentioned RPM is measured for shaft rotating (without coupling it to any other machine). Once a Generator is coupled, what will be the final RPM. Will...

Hi How can I measure, shaft power (watts or HP) of a vertical turbine using dead weight blocks Turbine diameter - 18 inches RPM - 450 ( Zero Load)

Hi, I have developed a hydro turbine (reaction type) I am testing the turbine for 3 bar input pressure (30 meter head). The turbine diameter is 30 inches. Torque produced is 109 Nm with 600 RPM without the generator (no load). As per Torque and RPM, power available at shaft (without generator)...

Dear sir, please have a look at the rough drawing and advice

Sorry for reverting late. please allow me to redraft the question with some updated data I have 2 exhaust fans that can handle 1000 cfm each. Diameter of each fan is 12 inches. I need to fit these 2 inside a duct in parallel. Hence the duct cross section will be 12x24. But the suction side of...

Dear Russ_watters, Each blower with a inlet port of 3 inches (area 12.56 sq inches) pulls 1000 CFM when open to atmosphere. when 8 blowers are connected in parallel in a chamber, they will require 12.56*8=100.48 sq inches of cross section inlet But the chamber inlet is 3 inches (12.56 sq...

Dear DrClaude, I am a individual and have been breaking my head for months to solve this. Appreciate some help

Hi, A chamber (manifold type cylinder) has 1 inlet and 8 outlets of 3 inch diameter each. 8 suction blowers are connected to the chamber's outlet. Each blower's suction flow rate is 1000 cfm. what will be the flow rate through the inlet of the chamber (diameter = 3 inches). Will the inlet...