Loo Kian Sing

14 Questions 14 Answers 0 Followers

Questions related from Loo Kian Sing

How can a centrifugal pump function within certain flow rate?

By referring to the sketch pump curve attached, pump is designed when a flow rate and head are given. but how to make sure the pump will function at that flow rate as the impeller rotate at almost...

09 August 2017 5,063 0 View

Is the suction pressure of a pump, the static pressure, dynamic pressure , hydrostatic pressure or total pressure at the inlet of pump?

Suction pressure = suction surface pressure + static suction pressure - suction friction pressure

22 May 2017 9,940 0 View

Can a capacitance type transmitter to be intrinsically safe type also?

If no, what is the difference between capacitance type transmitter and intrinsically safety type transmitter?

16 May 2017 2,897 2 View

How can I make sure there is no back flow in the system?

Kindly find the image attached. Pressures of the fluid in A, B, C, D and E are difference.If certain pressure is too low, how can I prevent the back flow from occurring? By arranging the pipe of...

12 May 2017 1,907 3 View

Can gauge pressure in a closed tank and vapor pressure of the fluid be cancelled off in calculation of NPSHa?

If yes, is there any condition needed?

12 May 2017 5,536 3 View

Is there any pressure drop due to the pressure brought from other side?

Kindly find the attached image.Assume there is no backflow occurs in the system. Would the pressure at A decrease due to the pressure from B when travel to C (instead of pressure drop across the...

12 May 2017 549 8 View

Is there any pressure drop across an expander for any fluid?

By referring to the "Fluid Mechanics Fundamentals and Applications" by Yunus A. Cengel and John M. Cimbala around page 353, I notice the pressure will increase after expander.Or can I use the...

03 May 2017 3,914 3 View

Is the flow rate of fluid the same at A and B?

Assume the flow rate of the fluid is 1 m3/hr at A and there is 10% spill back. with a total of 1.1 m3/hr flow rate of fluid across the pump.By referring to the image attached, can I say that the...

03 May 2017 4,061 4 View

Is the pressure used in the Bernoulli Principle is the pressure of the particular location?

When we want to apply the Bernoulli Principle, we cannot use the pressure of the fluid, but using the pressure at that particular location? If yes, how we measure or know the pressure at that...

03 May 2017 8,029 6 View

Is there any water formed in a closed loop system (closed loop tube) with fluid, refrigerant?

I have seen the filter dryer is used in the cooling system for refrigerant part in between the condenser and expansion valve. Is there any water formed inside the tube when there is cooling process?

21 April 2017 2,242 5 View

Can I say the expansion valve is used to reduce the temperature?

The main function of the expansion valve in a refrigeration system is to reduce the pressure of a fluid by controlling the flow rate of the fluid. When the pressure of the fluid decrease, so thus...

21 April 2017 7,699 12 View

What is the formula to calculate the longitudinal stress due to weight (No liquid) of vertical pressure vessel?

I am using the formula, S= Wv/ (PI*D*t), but still unable to get the exact answer as calculated by PV Elite.

20 October 2016 1,727 3 View

What is the ratio needed to form a solution of corrosion inhibitor and aqueous solution?

How to form a solution with 20ppm corrosion inhibitor and NaCl? What is the ratio needed?

09 March 2016 8,241 2 View

What is the most suitable material that can be used for the pipe connecting the boiler and turbine in the steam power plant?

The pipe should be able to withstand high pressure and temperature for a long period.

15 October 2015 4,359 4 View