RBM Metis involves heating metering consumption systems, including both direct and indirect metering systems.
The metering of the energy used for heating and cooling and for the production of sanitary hot water makes each user completely autonomous in the management of their consumption. In fact, the user must have the ability to control his own consumption and to evaluate the cost.
Energy metering can be direct and indirect, depending on the devices and the principles used for measurement.
It is based on the measurement of the thermal energy taken from each user, through the measurement of the parameters necessary to define the enthalpy difference between the inlet and the outlet circuits, by measuring directly on the heat transfer fluid.
Direct metering is easily applicable when each building unit has a single power supply circuit (systems with "horizontal" distribution in columns). It is therefore particularly suitable for:
- New buildings with horizontal distribution systems
- Transformation of existing independent systems in new plants with centralized production of heat
Indirect metering, also called heat cost allocation, is mainly used in existing plants with "vertical" distribution and is realized by installing an allocator on each radiator. In these systems, the direct metering would indeed be technically and economically unsustainable as it would be impossible to identify a single distribution circuit on the unit housing.