Flocon HVAC Commissioning Modules act as distribution hubs to clusters of terminal units. Each module can accommodate up to 7 terminal units for either heating or cooling circuits. They have been used successfully with groups of fan coil units, air handling units, chilled beams and trench heaters. Commissioning module projects have included office fit-outs, hospital […]
FlatStation HIUs (Heat Interface Units) are located at the interfaces between a communal heating system and each individual user. Hot water is generated in a centralized plant room using high efficiency heat generators such as combined heat and power (CHP), and is then circulated through flow and return mains. At each dwelling interface, an HIU […]
Each FiltraCIM valve consists of a shut-off valve and integral strainer. This design greatly simplifies flushing and commissioning operations. The fine-mesh strainer removes system debris. Access is easily gained by first closing the associated shut-off valve and then unscrewing the end plug of the strainer casing. FiltraCIM valves are well suited to provide protection for […]
An expansion vessel is a small tank in heating or domestic hot water systems, which provides protection from excessive pressure caused by thermal expansion in a closed system. The vessel contains a diaphragm that divides it in two. One section is connected to the hot water system, whereas the other section is dry and contains […]
An electronically commutated motor (ECM) uses a microprocessor controller to sequentially energize/de-energize each winding of the stator. This processor-based pulse control sets up the magnetic field that makes the rotor turn. The microprocessor uses a closed loop feedback mechanism to more precisely control the magnetic fields and minimize eddy current losses. This allows a brushless design […]
Fan power is required to move air both through ventilation equipment and to distribute the air within a room. The measure of this is specific fan power (SFP). In comparison to natural or hybrid ventilation systems, mechanical systems typically have higher SFP requirements. This is because the air in a mechanical unit must be pushed […]
Domestic hot water (DHW) refers to the hot water used in sinks, showers and baths in any type of building (not just domestic dwellings). It is supplied on circuits separate from the hot water used for heating, although water for both purposes is often generated by the same system. Unlike water in heating systems, DHW […]
District heating or community heating is the use of a centralised heat source, often housed in an ‘energy centre’, to provide heating to a number of buildings. Heat sources may include boilers, combined heat and power (CHP), heat pumps and solar thermal systems. The types of development that are suitable for district heating systems include […]
In variable flow circuits, Differential Pressure Control Valves (DPCV) are used to maintain a constant pressure differential across a sub-branch. This protects downstream control valves from having to operate with excessive pressure differences and neutralises the effects of system pressure variations. A DPCV contains a spring-loaded piston and a diaphragm that separates the upper / […]
Demand controlled ventilation is the automatic linking of fan speed with one of the indicators of indoor air quality (IAQ), such as carbon dioxide (CO2) or humidity. In this way, good IAQ can be maintained during occupied times with the least energy consumption by fans. For classroom ventilation, demand control is often arranged using a […]
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