Alan Fletcher Member

Just for the record, here's a chart of the Mizuno M19/R20 callibration points, and the Manufacturers spec.

The green triangles are the fan-law curves for this model's specification.

The red circles are for three sub-models. I am *presuming* they use the…

Can someone please check this data and calculations.

Here is the fan (and outlet tube) : https://www.lenr-forum.com/ima…caa43b99e97f1d5eb2b35.png
The fan spec is at https://www.sanyodenki.com/arc…_pdf/San_Ace_97BM33_E.pdfThe model number is 109BM12GC2-1…

(Quote from RobertBryant)


I started my academic life with FPS. Then we switched to cgs. No, wait! MKS. Ooops : SI .... no wonder I can't remember any physical constants,

ps: But I prefer Imperial for human-scale ...

pps: My FIRST computer (Ferranti…

Actually, Mizuno might find that a regulated flow water pump might do the job. I'll ship it to him (or a replicator) if they want.

RB asked me to post the FULL quote.

The warning about TURBULENT flows is at all velocities.

The warning about the HIGH flows (turbulent OR laminar) is NOT applicable.

ps : Life experience -- I've bought over $10M equipment based on specifications and…

(Quote from Bob#2)


There are TWO laws of Rossi

a) IGNORE everything he says
b) PAY ATTENTION to everything he says

I already paid for a Prominent pump. Because of my empathetic CONCERN about Rossi's flow rates.

Edit : You're welcome.

Since the Reynolds number is proportional to the diameter of a tube, you can convert the turbulent flow in a tube to a laminar flow by stacking small tubes in the large tube (Or have an insert with many small, long holes)
The smaller diameters can bring…

Google : send Mizuno a laser anenometer
https://books.google.com/books…0of%20velocity%2C&f=false

(Quote from RobertBryant)


NO, by my references.

I almost married a pharmacist's daughter : does that count?

https://www.kanomax-usa.com/pr…mometer-model-6501-series

• When the direction of the airflow is known, choose a UNIdirectional probe.
• When the direction of the airflow is unknown or turbulent, choose an OMNIdirectional probe.

Of course, that instrument…

[ I responded to the posts before seeing Alan Smith's notes.
ps : I understood that you endorsed my breaking out the calorimetric stuff into a separate thread ..
]

(Quote from RobertBryant)


Of course the black-box thing was pure rhetoric. At least THAT got through to you.

For engineering matters, I don't think there will be many. I'd look out for "best practices" etc. Not to mention proofs of negatives and all…

Here's some background information on affinity laws : https://www.sciencedirect.com/…/engineering/affinity-law

eg The variation of pump performance with changes in speed also follows the affinity laws, but with a higher level of accuracy than do changes…

And see : https://www.dantecdynamics.com…0measure%20turbulence.pdf

MIZUNO REPLICATION AND MATERIALS ONLY

Details on the outlet pipe.

AS I said before : Hot-wires and IR are great for DIFFERENTIAL analysis.

But *NOT* for quantitative.

(Quote from RobertBryant)


I have NO idea of what clarification you need beyond the reference I gave.

And yes : the length of the outlet pipe should be 14 diameters, ie 14*6.6 = 92.4 cm
(with the probe at 4 diameters = 27 cm from the end)

(Quote from RobertBryant)


Equations 18-19 above,

Recommendations (using Mizuno's fan) :

Make the outlet tube 15 diameters long, and measure 4 diameters from the outlet.

Use the RPM counter (unused yellow wire) rather than watts, so that the results are linear (rather than squared).

Correct the…