Recent content by tilopa

Thanks, I'll check out those links.

I'm trying to understand thrust for a real world application. I found this formula: T= pi / 4 x D(squared) x (v+V1/2) x p x V1 Where: T thrust [N] D propeller diameter [m] v velocity of incoming flow [m/s] V1 additional velocity, acceleration by propeller [m/s] P density of...

Thanks for all the info. Mrspeedy, your idea sounds good, but it is a little bit involved for me right now, if my plan does not work I'll try your method. I've bought 50 feet of 3/8 copper refrigerator tubing, bent it into a coil and drilled holes at the top of the freezer and pushed the...

BTW, the main reason your hand feels colder in your example is because more of the surface area of your hand is in contact with the coolant (ice slush) than with sticking it in ice cubes. I am talking about copper coils encased in a block of ice, so all of the surface area of the copper will be...

I am wondering why that is so. Solids have a higher Thermal Conductivity that liquids in general, ice has a TC of 2.1 and water is .5 something, my understanding is that means ice can transfer the heat from molecule to molecule much faster. Like Copper has a thermal conductivity of about 385...

I am running hot air through a copper tube that is inside a chest freezer. I would like to encase the copper tube in a coolant that will help cool the air in the tube and was wondering which of these 2 would work better, water mixed with antifreeze at a temperature of 0 degrees F, or Ice at 0...