A heating pump is a device designed to move the coolant (hot water) through pipes. Its main function is to overcome the resistance that exists inside the pipe. The larger its diameter, the less power the device requires. In the place of its location, the pump for the heating system creates such a differential in pressure that ensures the constant movement of the heat carrier.
In order to choose the right device, it is necessary, first of all, to have information on some system parameters. The first of these is the required pressure. An important role is also played by the performance of the device, which is calculated by running the maximum amount of coolant under high pressure. The next parameter that characterizes the pump for heating are its operating conditions. Here it is necessary to take into account the temperature of the liquid that circulates in the system, as well as the diameter of the pipes, because the larger it is, the less power the device requires. Another important characteristic is the pressure, which characterizes the energy of the fluid flow during its movement through the pipe. A heating pump, the price of which depends on the characteristics listed above and starts at 1,500 rubles, can be stepless or have two, three or four speeds. The first one is the most expensive, since it saves about 80% of electric energy.
To calculate the exact performance of the device, you should determine the discharge pressure value. This is done when spinning at a second speed. It is very important that the pressure at this time corresponds to the resistance of the system, which is the sum of the linear pressure losses along the perimeter of the pipe. As a rule, in most cases, this resistance value due to the low speed of the heat carrier does not allow a pressure loss of more than two meters.
Another important indicator that characterizes the pump for heating and affects its choice is energy consumption. In most cases, while using this device, the main characteristics and parameters of the heating system can be changed. For this reason, the level of energy consumption by liquid thermal carriers also changes. These units do not use their maximum power in all cases, which means that it is recommended that you stop your choice on copies with a high class of energy saving.
In conclusion, it should be noted that if you choose the right pump for heating, you can save on the cost of
electric energy. The basis is considered to be the consumption class, which is denoted by “D”. The difference in consumption between neighboring classes is approximately 20%. In other words, a pump that is of type “A” uses only a third of the energy of the one for which this indicator is labeled “D”. Based on this, you can easily calculate the potential savings due to the average values of electric energy consumption. If, for example, a class “D” pump consumes an average of 800 watts, then if it is replaced with an analogue with class “A”, we can say that this figure will be: 0.33 x 800, or 264 watts. As you can see, the savings are obvious!