As industries seek energy management solutions, the need for accurate gas flow measurement to establish baseline usage and continuously monitor to improve the process is created. There are applications within these systems that thermal mass flow meters excel in, including natural gas consumption, combustion control, and compressed air monitoring.
Energy Management SolutionsMany companies are developing energy management programs to optimize the energy consumed, which eliminates wastage and reduces operating costs. The International Organization for Standardization (ISO) established ISO 50001 which defines an organizations’ requirements for an energy management system. In the United States, the Department of Energy is promoting Superior Energy Performance (SEP) programs as a method for demonstrating continual improvement in energy efficiency.
The first step in implementing an energy management program is to identify the energy usage in a facility to determine baseline consumption. Thermal mass flow meters are ideal for use in energy management systems for combustion control, natural gas usage and compressed air monitoring. These applications are in many industrial operations including chemical, refining, steel, glass manufacturing, aluminum and pulp and paper. SEP programs are also in light industrial and commercial applications such as hospitals, office complexes, universities and government facilities.
More information is available in Sage Metering’s white paper, “ISO 50001 Energy Management: The Use of Thermal Mass Flow Meters in ISO 50001 Energy Management Systems.”
Natural Gas Consumption
Natural gas is used in many industrial and commercial facilities for heating or as a raw material used in process operations. Natural gas submetering monitors gas flow to each combustion source to identify excess usage or internal cost allocation for different operating areas. Thermal mass flow meters are ideal for this application as the flow meter provides both instantaneous usage for locating areas of excess use plus providing total consumption for cost allocation or efficiency evaluation. A thermal mass flow meter with insertion probe is easily installed in existing piping where other flow meters may require expensive piping modifications. Also, the thermal mass flow meter will provide a mass flow measurement without the need for pressure and temperature correction.
Additionally, the thermal mass flow meter can function as a check meter to compare flow measurements with the billing meter provided by the gas supplier.
The efficiency of any combustion source can be optimized by operating at the most efficient air-to-fuel ratio. Thermal mass flow meters can measure natural gas (or propane) fuel and combustion air flow rates. This data can then support a combustion control system in optimizing the efficiency of a boiler, heater, oven or other combustion sources. The thermal mass flow meter can easily be installed in the air ducting to directly measure the mass flow of air without creating any pressure loss.
More information is available in Sage Metering’s white paper, “Combustion Efficiency and Thermal Mass Flow Meters.”
Industrial facilities waste as much as 30% of the compressed air produced. This wastage is due to both leaks in the piping system and areas of excess consumption. The thermal mass flow meter measures compressed air providing flow rate measurement as well as total consumption. This data is helpful in determining compressor efficiency and identifies time-of-day usage. The turndown capabilities of the thermal mass flow meter also provide accurate flow measurements at peak operation times as well as night or weekend production when the compressed air consumption may be considerably lower.