All about Condensing Boilers

The main theory of what a conventional non-condensing boiler does is pretty simple. A boiler is operated by the ignition of a combustible fuel source (oil, natural gas or LP) with an appropriate air mixture. The heat of the flame and hot combustion gases pass through a heat exchanger in the boiler, where the water is heated and then flows through radiators, under floor heating pipe and hot water tanks throughout. The combustion gases escaping through the chimney system and ventilation. A lot of heat is lost with this type of boiler where the hot gases are only directly ejected. These types of boilers have lower efficiency, not greater than 75%. An efficiency index is basically an indicator of the amount of energy that transfers fuel boiler used to the amount of heat supplied to the system.
Condensing boilers work a bit differently. In essence, it has some of the same components not condensing boilers can be done except for a second heat exchanger. One of the gases produced in the combustion of fuel is water vapors. Where hot combustion gases just vented out in a traditional boiler, condensing boilers these vapors condense around a second heat exchanger before ventilation. At the time that the gases are ready to be vented out are much cooler than about 60 degrees Celsius. As a result, the vent tube used in the installation can be made of PVC.With these systems, some of the internal components must be made of a more durable material, because the condensed water tends to be acidic with pH 3-5. This results in the cost of the condensing boiler is higher than average. The secondary heat exchanger is where the return system comes first. Thus, when water enters the primary heat exchanger and is preheated, thus enabling the boiler to operate more efficiently. The efficiency ratio of condensing boilers ranging from 80% to 98%.

Combi boiler / Combination boiler
Combi boiler / Combination boiler is an excellent choice for homes with limited space. Combi boiler / Combination boiler is a water heater for domestic and central heating system combined in a single unit. Have a heating coil inside them, and they function as a water heater unlimited demand. Combi boilers do not have cylinders or external storage tanks as traditional systems do, so can be installed in areas where a typical system would never work.

Pros condensing boiler
·         fuel are economic and have an efficiency of 15-30% higher than their peers without condensation
·         considerable savings in annual energy expenses
·          Most units are fine (that make noise as much as a window mounted air conditioning)
·          Many Models could easily fit in a small closet and have mixed boiler
·          They are more environmentally friendly with C02 output

Cons condensing boiler
·         initial cost of the unit is high as compare to conventional low efficiency boilers
·          units need to be condensed or acid pool equipped with a drain pipe
·          Housing the boiler is installed to insulate needs, otherwise the heat saved Average efficiency is lost through the walls.
·          most units sensor required time outdoors to operate effectively