NEM Energy B.V. products

Exhaust gas bypass systems contribute operational flexibility, efficiency and safety to a combined cycle power island. The heart of any bypass system is the diverter damper. NEM Energy diverter dampers combine state-of-the-art design principles and technology with more than seventy years of experience and empirical field data.

Simple cycle power plants consist of a combustion turbine and an integrated chimney or exhaust stack. Many power island projects start with a simple cycle design in order to minimize initial capital costs, reduce equipment installation time and enable power generation as quickly as possible.

Guillotine-type blanking plates are extensively used in exhaust gas bypass systems as a secondary shut-off device in conjunction with the diverter damper in order to create a “man safe” environment within the downstream HRSG when the combustion turbine is operating.

The primary function of an HRSG stack damper is to slow down the cooling rate of the HRSG between gas turbine starts. By minimizing the dwell time necessary for HRSG restart, thermal stresses for pressure parts of the HRSG are reduced, resulting in an increased life time.

Louver dampers by NEM Energy are robust flow control and/or shut-off devices used in flue gas ducts, specifically designed for the demanding environment inherent in combustion turbine exhaust installations.

Tempered Selective Catalyst Reduction systems, simply referred to as T-SCRs,  by NEM Energy offer an effective and efficient way of reducing Nitrogen Oxides emissions from open cycle gas turbine plants, while maintaining efficient operations over a wide range of load cases as well as increasing catalyst lifetime.