How does water from a tap/shower get colder?

Question

I know it can get hot from the boiler, so how does it get super cold?

In: 0

Answer 1

It gets colder because the water in the pipes in your house are about as warm as the inside of your house.

So you turn on the tap and the water might feel about skin temperature.

As the water in the pipes of your house runs out of the tap and drains away, water in the pipes underground gets into the pipes in your house. This water is cooler than the water that was in the pipes in your walls.

So as you let your fingers dangle in the water it goes from room temperature to cooler as the farther away water reaches your fingers. 😉