Condensing Boilers and Emissions Regulations During the replacement of an aging central steam plant, the operating efficiency and sustainability depended on careful selection and specification of condensing hot water boilers. Fire tubes condensing boilers are used in the new heating plant design. To select the most appropriate boiler, the engineer must considered the following specifications: local code requirements, cost impact, emission regulations, floor space, fire tube condensing boiler control, boiler heat ex-changer, flue material and location, drain required, hot water return temperature, minimum flow to the boiler, operating weight of the equipment, heating coil requirements, warranty coverage, and service personnel available in the area. The engineer also must consider high turn-down of the boiler, because it might reduce short cycling when demand is low. If the boiler meets the actual system demand, it can reduce fuel cost for the building owner.
For the project, major consideration was given to local codes, space requirements, boiler control, and emission reductions. The only way to install the condensing boilers at the facility was to engage the condensing boiler manufacturer to work together allowing variance approval, before the units could be installed. Condensing boiler emissions regulations: The boiler industry faces more stringent NOx emission regulations from the EPA. For boilers greater than 2000 MBh, a third-party test is required and NOx should be below 9 ppm. Annual inspections are required as well. In 2011, the EPA issued a new regulation for boiler maximum achievable control technology, known as MACT. This rule is known as the National Emission Standard for Hazardous Air Pollutants (NESHAP).
To determine the emission limits for NESHAP, EPA and PA DEP use the MACT approach; the regulation was effective in 2012. The NESHAP regulations define an area source of air emissions as any stationary source or group of stationary sources that annually emit in aggregate less than 10 tons of any single hazardous air pollutant (HAP) or less than 25 tons of multiple HAPs. Existing coal-fired boilers with a heat input equal or greater than 10 million, required to adhere to emission limits for mercury and carbon monoxide. This new regulation determines what a condensing boiler’s emissions are and how often the boiler must be tuned up, based on its size and type. Existing central heating plants do not meet this requirement, and operating an existing central heating plant at the university could be quite costly. Recommended industrial condensing boiler system: http://www.zghorizontalboiler.com/horizontal-condensing-boiler-manufacturer.html Horizontal boiler for food industry: http://www.zghorizontalboiler.com/application/horizontal-boiler-for-food-and-bevera ge-industry.html E-mail: Jane92806@foxmail.com