Recent content by Xalt

Thank you both for your replies. With a counter-flow heat exchanger, I think y--> x as L --> infinity; with a parallel flow heat exchanger the limit is indeed x/2

Hi I am planning to make a DIY heat exchanger. It will be an air-to-air counterflow heatexchanger with equal air flow. I made a small test heat exchanger so I would be able to estimate the required size of the heat exchanger. I did a small experiment with the small exchanger. The outcome is that...

Thanks for your answers Pogo and Bob! And thanks for asking to the motor man too... :) Xalt

Hi Pogo, thanks for your reply. I checked it again, and it is like I drawed it before; I unwound the whole thing, and it is a single coil of copperwire surrounding the magnet as in my previous post. I did not mention that there are 8 iron "clamps" that hold the coil in place (see attachment...

Hi, I am trying to learn more about electromagnetic induction because I want to build a generator for a wind turbine. I am a bit confused about something, hopefully someone out there can help me! I recently opened a bike dynamo. It contains a permanent magnet that can rotate, and the...