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None. Watts refers to how much electricity is being drawn from that 120v line. Think of volts as a size of pipe, watts as the size of a pitcher you are going to fill with water. If the faucet is off, the pipe still contains water...but you aren't using it till you fill up your pitcher. The other part of the equation is ampres...which could translate into the time it takes to fill the pitcher. Bigger pipe(larger voltage) takes less time (lower ampres) to fill the same pitcher (watts).
While Amps and Volts are both units of electrity, they are quite independant. Total electrical energy is measured in "watts". Amps * Volts = Watts. You can get 100 Watts with 10 Volts @ 10 Amps. You can get 100 Watts with 100 Volts @ 1 Amp. You can get 100 Watts with 1,000 Volts at 0.1 Amp. It's like asking, "How do you get water flow of 20 gallons per minute?" You COULD have a 3 ft diameter pipe with very low pressure, or you COULD have a 1/2 inch pipe with very HIGH pressure. Both could give you the desired 20 gallons per minute.
This is different for different metals.
Heat it up
Yes, sometimes enough heat to melt parts of plastic piping.
No, PVC is not rated for 180 degrees which is the average operating temperature for baseboard heat
Pressure rises in the tube.
Heat pipe collectors must be mounted with a minimum tilt angle of around 25° in order for the internal fluid of the heat pipe to return to the hot absorber.
you have first to know the thermal conductivity of PPR that you are dealing with. normally, this is in range between 0.1 to 0.24 W/MK .then you apply this formula Q(IN WATTS) =Thermal Conductivity/MK)*A( surface area for the pipe M2 )temperature difference between fluid inside pipe and temprture of pipe surface K)/(thickness of the pipe M)
None. Watts refers to how much electricity is being drawn from that 120v line. Think of volts as a size of pipe, watts as the size of a pitcher you are going to fill with water. If the faucet is off, the pipe still contains water...but you aren't using it till you fill up your pitcher. The other part of the equation is ampres...which could translate into the time it takes to fill the pitcher. Bigger pipe(larger voltage) takes less time (lower ampres) to fill the same pitcher (watts).
Yes all brass object can be recycled.
Try wrapping the pipe in tin foil as this keeps the heat in. If not, try cutting styrofoam into the shape of the pipe and attaching it to it, keeping it together with electrical tape.
Used for inspection. Heat numbers make it possible to trace pipe from spools fabricated on a job to material documentation from a given melt. The matching documents will tell when and where the pipe was made, the material used and the pipe grade etc.
While Amps and Volts are both units of electrity, they are quite independant. Total electrical energy is measured in "watts". Amps * Volts = Watts. You can get 100 Watts with 10 Volts @ 10 Amps. You can get 100 Watts with 100 Volts @ 1 Amp. You can get 100 Watts with 1,000 Volts at 0.1 Amp. It's like asking, "How do you get water flow of 20 gallons per minute?" You COULD have a 3 ft diameter pipe with very low pressure, or you COULD have a 1/2 inch pipe with very HIGH pressure. Both could give you the desired 20 gallons per minute.
double pipe heat exchanger is made if two concentric tubes one carrying cold flow and the other one carrying hot flow. but shell and tube hear exchangers are made of a shell like a vessel filled with many thin tubes to transfer heat between fluids. there are more data available at : http://scopewe.com/double-pipe-heat-exchanger-design-part-1/
heat-pipe
The average temp. of a motor cycle exhaust pipe is 600*F or 315*C !!