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## Main Question or Discussion Point

Hey guys,

Im designing a system where water flows through a copper tube or coil where it is heated and sprayed out the other end. My question is, how does the length of the tube/coil play a role in this heat transfer problem?

What I would like to do is pass the water through the inlet at a given temperature (likely room temp) and heat it using the copper tubing inside of a handheld device, and spray it out the other end at a temperature around 37 °C. What would be a good equation or set of equations to use? Thanks.

Im designing a system where water flows through a copper tube or coil where it is heated and sprayed out the other end. My question is, how does the length of the tube/coil play a role in this heat transfer problem?

What I would like to do is pass the water through the inlet at a given temperature (likely room temp) and heat it using the copper tubing inside of a handheld device, and spray it out the other end at a temperature around 37 °C. What would be a good equation or set of equations to use? Thanks.