What is dhw in a heating boiler?

Everyone wants to provide themselves with heating and warm water. However, for this you need to know which system is responsible for this, and how to properly configure it. What is dhw in a heating boiler? This will be discussed in this article, and also consider the pros and cons of the device.

What it is?

Hot water supply is a system that allows users to supply water with a certain temperature (up to 75 degrees). Most often it is used in residential buildings or in a production facility. DHW is considered a significant device, because with its help not only the living conditions of the population are improved, but also the quality itself.

Types of devices

There are several classifications. Let's analyze each of them:

1. If we evaluate from the point of view of the degree of centralization, then we can distinguish two types. These include local and centralized. The first of these is established exactly where consumption occurs. Another system is being prepared at the heat point itself. And already additional pipes are connected to it, which are able to deliver the desired fluid to users.
2. In addition, there are two models, distinguished by the degree of preparation. Thus, single-circuit and double-circuit cycles are distinguished. One of the heat sources is water of elevated temperature, while the second still has steam. Naturally, the process of a boiler with one circuit is much simpler than that of the same, with only two. The presented types of systems are also called open and closed.
3. The last division is based on the use of recirculation. It can be both with her absence and with her presence. That is, in the first liquid, if it is not lost, it cools down due to the transience of time. This type is convenient in using small networks with pipelines. In the following case, water up to 35 degrees, which has not been used, is diverted specifically for reverse heating.

IMPORTANT! Serviceability is carried out only when the local system is more than 2/3 of the entire length.

Advantages and disadvantages

To really determine the characteristics, you should distinguish all the pros and cons. The first category includes:

• Thanks to modern technology, high energy efficiency is carried out.
• Some designs have a low cost, which indicates the availability of acquisition.
• Low pipe deposits and metal corrosion.

Speaking about possible defects, it is worth mentioning:

• The required accuracy in calculating an open system. This can cause difficulties in interacting with the unit.
• In addition, the state of the dual-circuit design is much more complicated than with a single circuit.