Energy Allocation Sub-meters
The design of certain heating systems (i.e. central systems), makes installing individual submeters either cost prohibitive or not practical. Energy Allocation Submeters have been designed to measure the Time “T”, that a rated mechanical piece of equipment runs or ,additionally, the Time and Temperature “TT” that a piece of equipment runs, to calculate the energy used through an allocation calculation. The T and TT systems can be used to allocate gas for heating and electric for cooling
By measuring the amount of time a unit runs and measuring any relevant temperatures, we are able to collect data on individual units to determine usage. By using the manufacturer's specs on the heating unit and the time or time and temperature data; we are able to determine the individual unit's gas usage.
Energy Allocation using Timing devices are used specific to ASME rated equipment, where the equipment output has been rated specific to energy input. A Time & Temperature device is used for central boiler and chiller systems where system input is correlated with the system Time & Temperature measurements. These systems are engineered products and should only be designed and installed by qualified HVAC licensed technicians.