It is estimated that in our climate circulation pump runs for at least 5-6 thousand hours per year, continuously consuming electricity. So, among other parameters becomes very important and energy efficiency of the pump. Considered to be the most economical variable-frequency pumps (for example, GRUNDFOS series ALPHA2), which independently alter the speed of operation depending on the hydraulic resistance of the system and needs at home in the warmth. Thus, not only saves a lot of electricity but also increases life of the system. ALPHA2 not only power efficient, and convenient to use, that is certainly important to the consumer, - says Paul Antipov, Senior Engineer segment household appliances company GRUNDFOS. - For example, this allows the pump at any time to learn about the value of energy consumption and the state of the heating system thanks to LED indicator. " Delivery of heat to the address on the efficiency of heating systems is strongly affected by the scheme and pipework, in particular - the principle of connecting the radiators in the heating circuit.
In the simplest one-pipe wiring diagram included all the radiators in the heating circuit in series. To achieve uniform heating of rooms at this very difficult because as it passes through a series of coolant heaters cooled heat sink and each of the following gets less heat than the previous one. Optimal for individual homes is two-pipe circuit layout: each heating unit are brought forward and reverse pipelines. As a result, the coolant temperature at the inlet of each radiator is the same. Of course, such a system is more expensive than one pipe (due to greater consumption of materials), but this small drawback is compensated by the possibility of regulating the temperature individually in each room. For this purpose, at the entrance of the radiator thermostat is set. According to experts of the company Danfoss (producer energy-efficient equipment for heating and heating of buildings), modern devices make it possible to regulate the temperature in the range of 6 to 26oS up in 1oS.