Dependent and independent heat supply scheme: description, features
For most people, the term "independence" in The heating system plan is associated with dependence on electricity, and means that this is the kind of heating that can work quite normally even without an electrical supply.
In fact, these are two completely different concepts, so we propose to understand what a dependent and independent heat supply scheme is, as well as what advantages each of them has.
Such concepts as "dependent" and "independent" can refer exclusively for centralized heating systems. This system is capable of serving several buildings at once, to which hot water or any other heat carrier is supplied through the main pipeline.
If the connection scheme is dependent, then the distribution internal system in the building will communicate with each other through the main pipeline, and the heat carrier from the main will begin to flow through a special unit called an elevator, and then it will reach the radiators.
Elevator is a mixing unit, and in it an extremely hot heat carrier from the mainline is mixed with the one that has had time to cool down "in processing", and as a result, water from normal temperature.
But in an independent heating system according to the scheme, the distribution internal system of the building does not have a connection with the highway, it turns out that both systems are separated. Heat energy from the main heat carrier is transferred through internal channels through a heat exchanger. With its help, it turns out to heat cold water from the water supply system for the hot water supply system.
So, let's compare all the advantages and disadvantages of each option.
A dependent heating system has two main advantages :
But there are still many disadvantages:
Moving along a large pipeline network, such an environment will collect huge amounts of scale, sand, rust, and often it also brings in large amounts of oxygen.These factors often lead to rapid wear on fittings, piping and radiators within the distribution system.
If we talk about an independent heat supply scheme, then things are a little different with it. Its disadvantage is cost, and even higher costs for repair work if necessary.
But there are also advantages:
Please note, that the larger the heated area of the building, the more profitable it is to use an independent scheme, since saving thermal energy and increasing the life of elements on a large scale will help compensate costs for arranging the system.
At the moment it is possible to connect to the centralized heating system even by an independent method of heat supply.
Dependence on electricity
Information about the device of an independent and dependent heating system for ordinary users is usually only for informational and reference purposes, and for this reason, where centralized heating systems are used, namely in cities, designers and utility workers.
In the villages and other settlements where there are private houses, there is simply no centralized heating system.
The question of the energy dependence of the heating system is becoming more relevant, since in the private sector, where every house has an autonomous heating device, problems with the supply of electrical energy are far from uncommon, especially if the weather is bad outside. So let's see how you can create an individual heating that will not rely on electricity.
Solid fuel boilers
A solid fuel boiler is certainly considered independent. It does not need a centralized supply of fuel and electricity. In a house where there is such a unit, even with perfect isolation from the whole world, it will be warm if the owner of the building has enough firewood or corners (fuel).
But it should be borne in mind that everything that has been said will apply to those solid fuel boilers with a simple design, in which fuel will be placed manually after a time interval of 4 hours.Any modifications to it that have been created in order to minimize user involvement need to provide electrical power :
A device with forced air supply operates according to the following scheme:
Please note, that without electricity such a boiler will not function, as it is needed for both the fan and the automatic system (thermal sensor + controller).
And even a gas boiler can be volatile, since this model will work according to the following principle - the user lights one burner, which from the moment will burn constantly, and from time to time the main one will light up from it.
This automatic safety system is mechanical, namely in the sense that its action is based on a change in the volume of material due to a change in temperature.
The disadvantage of an energy-dependent gas boiler is that the pilot burner, although it seems small in appearance, consumes a fairly large amount of gas, and in this case, a volatile boiler will still be much more economical, in which has electronic ignition.
The use of an energy-dependent heating system is justified only in one case, namely, if during the operation of the electrical supply network there were frequent crashes were noticed.
If there is no such problem, but it is worth equipping an electricity-dependent system, since it is many times more practical. The fact is that not only the convenience of using a heat generator, but also the type of circulation of the heat carrier should be taken into account.
In a volatile system, circulation can be extremely natural, while the heat carrier will move through the pipes due to convection. In the variant that is considered volatile, the heat carrier is pumped through the pipes using a circular pump, and this gives a huge number of advantages :
When using a system that is considered volatile, it is possible to warm up the heat carrier not by 100%, which is often required in the off-season period (with the natural method of circulation, it cannot circulate without strong heating).
Posted By: Work Style |09, Nov 2020
Posted By: Work Style |04, Nov 2020
Posted By: Work Style |12, Nov 2020
Posted By: Work Style |09, Nov 2020
Posted By: Work Style |10, Nov 2020