Hotel hot water circulation system

Some time ago, my friend's house was decorated, and the decoration company asked him to install hot water return pipe. He also said that this is the current decoration standard, and many hardcover rooms are doing this. The advantage is that it is more convenient to use hot water and zero cold water for the whole house. Later, my friend asked me for advice. After listening to this, I can only sigh that there are so many ways to make money in the present decoration company. Hot water return pipe has become the standard for decoration?

I don't quite agree with this. What is a hot water return pipe? Is it necessary to install hot water circulation system in home decoration? Today we will talk about this topic in detail. Hot Water return pipe Usually, our domestic hot water is heated by a water heater, and then flows to other water points through water pipes, such as faucets and showers. So the flow direction of water is simple and fixed, tap water-cold water inlet-hot water outlet-drainage system. We should take this into account when decorating and arranging water and electricity, which is also the basis for laying water pipes. From this point of view, there seems to be no problem, but it will have these disadvantages: every time you turn on the tap and want to use hot water, the cold water left in the water pipe will flow out first. In other words, you have to put the cold water down before you can have hot water, which will waste water and affect the use experience.

If you want to achieve "zero cold water" and keep hot water in the hot water pipe at all times, then a hot water circulation system should be established during decoration. Hot water circulation system, as its name implies, is circulating hot water. Every once in a while, hot water can return to the water heater to be reheated. In fact, the hot water return pipe is based on the cold water pipe and hot water pipe, and a special pipe is added, through which hot water can return to the water heater.

Hot water circulation system The hot water circulation system can be simply understood as adding a hot water return pipe on the basis of the original water pipe, so that the flow of water is no longer single and fixed. However, the key of hot water circulation system is not return pipe, but hot water circulation pump. Because the hot water return pipe only provides a way for hot water to return, so that hot water can flow through other pipes besides the hot water pipe, and the real driving force for hot water return is the hot water circulation pump, which is the following small box:

When the hot water circulating pump works, it pressurizes the pipeline to promote the flow and circulation of water. Is it necessary to install hot water return pipe? From the above circulation system, hot water return pipe+hot water circulating pump is the most important part of the system, so it seems necessary to install hot water return pipe. Actually, it's not, because many water heaters now have the function of hot water circulating pump, and you can directly use cold water pipes to make return pipe. On the other hand, hot water circulating pumps are classified, one needs hot water return pipe and the other needs hot water return pipe.