rb1957
"It doesn't matter that his research is a crock, and proven by McIntyre"
From http://en.wikipedia.org/wiki/Hockey_stick_graph: "Their [McIntyre and McKitrick's] analysis was subsequently disputed by published papers including Huybers 2005 and Wahl & Ammann 2007 which pointed to errors...
I've been following this thread somewhat, and I'm just going to chime in. I've got to say, some of the sentiments expressed here really surprise me considering this is an engineering forum. Especially, debodine's:
"I no longer trust anything presented to me by modern science."
Holy cow. That's...
My apologies, I had the situation mixed up. Usually we use one solenoid rack with four solenoid valves to control two trip and throttle valves. Because of the geometry of the site, one T&T valve is to be located at a higher elevation than the other T&T valve. The customer is concerned that they...
I've been tasked with doing an initial investigation into a possible new arrangement for a trip and throttle (T&T) valve system for a steam turbine. The T&T valve has a spring which is held open with oil pressurized to 80psi. If the turbine overspeeds, a solenoid valve opens, depressurizing the...
Thanks for the link.
What confuses me is that in section 2 on Bernoulli's principle, the total energy upstream is equal to the total energy downstream. What then, is meant when it is said that "fluid flows from regions of high energy to regions of low energy". How can there be flow if there is...
I know that fluid flows from areas of high energy to low energy, and not necessarily from high to low pressure. If you look at flow through a horizontal pipe that expands to a wider cross-section, some of the velocity head is converted into pressure head, which causes the pressure to be higher...
Ok, that makes sense. Let me see if I understand...
Just to clarify, I'm trying to create a spreadsheet that asks the user to input information about the pipe and the pipe elements along that pipe. The goal is to calculate the pressure drop due to major losses and minor losses from valves...
Thanks for the response!
In Crane 410 it says that head loss can be calculated as K*v^2/2g. It then says that by comparing that to the Darcy equation, the hydraulic resistance of a straight pipe can be expressed in terms of a resistance coefficient by K= f*l/D. That's why I thought that the...
Hello,
I am trying to calculate the non recoverable pressure drop of a compressible fluid through an orifice. In Crane 410, it says that the pressure loss coefficient K can be calculated by K=[√(1-β^4 (1-C_d^2 ) )/(C_d β^2 )-1]^2. Can this coefficient be used for both compressible and...
