Normally Hot
No, cold water is piped into the hot water tank and is heated by electricity or gas, it then flows out to the hot water taps.
the pipe with the hot water will.]The piping with cold water as many hydronic systems are over 100 years old and the piping looks as new as the day it was installedAs long as thermo stress and velocity are taken into consideration hot water lines can last longer then their cold countter parts as cold piping becomes more brittle over the years
the hot water valve shut off valve shuts off the hot water. The cold water valve shuts off the cold water. ;()
I hate questions like this one. Do you know why? Because I fear that the TEACHERS asking the question of their students are either IGNORANT of the subject matter they are supposed to be teaching or are asking a TRICK question of their students, which is almost always intellectually dishonest. Hopefully, it's just a poorly worded question by the poster of the question. Okay, I'll shut up and answer the question. A quantity of cold air can occupy a greater volume of hot air -- if there is more cold air than hot air!!!! If you've got two liters of cold air, that's a greater volume than one liter of hot air!!!!!! But what if you've got 0.1 kilogram of hot air and 0.1 kilogram of cold air? You've got the same amount of matter, right? They have the same mass: 0.1 kg. Will the hot and cold air occupy the same volume? NO!!! The hot air is less dense, which means it occupies MORE volume per unit mass than the cold air. So, if you have equal masses of hot and cold air, the hot air will have greater volume.
NO. PVC is for cold water only, CPVC is for hot or cold. I say forget the CPVC and just use pex.
YES
There could be several reasons why your hot water is cold. It could be due to a malfunctioning water heater, a problem with the thermostat, a leak in the hot water pipes, or sediment buildup in the tank. It is best to contact a professional plumber to diagnose and fix the issue.
Hot.
hot water
hot water contains more energy than cold water. cold water causes the water molegules to vibrate more.
The density of cold water is greater than hot water so there will be more substances that will float in it.
Cold
Cold water can hold more dissolved oxygen than hot water. This is because the solubility of oxygen in water decreases as the temperature increases. Therefore, cold water has the ability to hold more oxygen than hot water.
Hot because the atoms in the water are moving much faster then the atoms in cold water.
Entropy is the measure of disorderness. Hot water --> more energy --> less stable --> more disorderness (than Cold water). Therefore, Entropy of Hot water is greater than that of Cold water.
Hot water will provide more vapor in a bottle compared to cold water. This is because hot water evaporates more quickly due to increased energy in the water molecules, leading to more steam being produced.
hot water