Recent content by evoke1l1

Thank you for confirming this. I’m assuming the change in pressure over the 25C change? This would be caluculated by p2 = (p1 * T2) / T1 I believe.

Homework Statement I am working on a problem where I need to determine the time taken for an air heater with an 8kW output to heat a volume of air of 9m^3 by 25C. I am neglecting all losses at the moment. It almost seems too simple in my mind that I'm concerned I'm overlooking...

Ahh I see! It makes sense to me now. Many thanks.

May I just ask what delta H is, please?

Thank you for this. T(x) is already specified in the question with a uniform temperature for the pipe surface so I have the two temperatures to plug in, so in my instance, would the below be correct or have I misunderstood? h = Nu*(k/d) and q = h(T(x)-T2)

I am a little unsure how to get started with a homework question. Essentially, I have to calculate the local heat flux at a distance 1.2m (x) along a pipe. I have the fluid's properties and have calculated the Reynolds number, for which I've determined the flow to be turbulent and therefore do...

Thank you.

Homework Statement I need to calculate the pump head required for a fluid transfer system. The pump is located 3m above a storage vessel vented to atmosphere (1 bar) with a total pipe length of 5m to pump suction. The pump discharge is connected to a pressurised vessel at 2 bar absolute with...

Thank you. That was a big help. I obviously missed taking ∆ρ⋅g as W and got stuck in a rut. The end equation I've now determined to be as per Stokes law. Many thanks.

Hello, I'm John from the South East of the UK. Electrical and electronic engineer by profession. Glad to join the forum.

Homework Statement It is found the terminal velocity ut of a spherical particle in a fluid depends upon the diameter d of particle, the dynamic viscosity μ of fluid and the buoyancy weight W of the particle [given by the difference in density between the particle and the fluid (∆ρ) ×...