Introduction To Hot Water Circulator Pumps

Hot water circulator is a term normally used to identify the pumps which are a part of solar heating systems. This is a very common device used in many households in Hungary. Their mechanism of action involves moving fluid though heat exchangers to a point where the heated water can be stored for usage. Due to the spinning action of the motor and thereby impeller, the centrifugal force generated pushes he liquid through the plumbing circuit. The following are the main components of this type of pump.

• Motor Impeller
• Impeller housing

Unlike how positive displacement pumps work, circulation pumps require to be primed or wet in order to run. Therefore closed plumbing loops need to be maintained to ensure the pump is always filled with liquids or the pump could be situated in a position lower that the water level of the tank. Many leading brands such as Grundfos having a range of pumps to cater to this category available in several outlets in and around Hungary.

How To Choose Circulation Pumps

Corrosion due to exposure to oxygen is a common problem associated with cast iron pumps. These pumps are generally on the cheaper side of the price spectrum and should only be used in closed loop systems where there is little or no oxygenated water. In order to create safer pumps, brands such as Grundfos offer pumps made out of corrosion resistant materials which would be more long lasting. Household pumps are more commonly designed out of bronze and stainless steel but pumps with plastic housing are now becoming increasingly popular.

The power source you choose to power the pump is also an important consideration to make when selecting a suitable pump for the solar heating system in your home. There are both AC and DC power pumps available in the market. And the energy efficiency of the pump is often rated in relation to the energy output from the energy input received. AC pumps are found to be more common in the market as they can access an uninterrupted power supply through the utility grid. Some other aspects you should include are the fact that DC pumps are generally noisier in operation than AC pumps and are more costly to purchase. If you wish to go for a DC pump, PV-powered DC pumps are a better choice for use in heating systems.