The central hot water plant is a heating system which uses gas to heat hot water for use in space heating as well as domestic hot water usage. These systems are used a lot in commercial buildings, hospitals, airports and even industrial plants.
Heating Hot Water (HHW) Boilers can heat the water to around 600C for the purpose of achieving a sufficient heat load to provide convective, conductive or radiative heat to the area. Domestic Hot Water (DHW) boilers aim to achieve hot water temperatures of around 350C, for ideal comfort for the clients. Some sites have separate DHW boilers and HHW boilers, while other sites have a combined system which has sealed separation between the two systems using a plate-type heat exchanger to heat the isolated DHW line. As there are strict regulations for DHW which needs to address scaling, legionella, or other water borne bacteria, this separation and maintenance is very important.
Boiler technology has developed quickly in the past 5 years, and we have moved with these developments to deliver the most effective heating system for the client. We use condensing boilers as they are the most energy efficient systems to achieve heating demands effectively. Modular condensing boilers are commonly used by us as they can adjust the boiler system loading, based on the heating demand of the building. Therefore if not all units are needed, then they are kept offline to reduce energy consumption and more accurately meet heating demands.