PRIMARY SOLUTION
Acoustic silencer + SCR
Integrated or modular exhaust assemblies combining NOx reduction, sound attenuation, AdBlue/DEF dosing, mixing, control and service access.
SCRACOUSTICSCONTROLS
ENGINEERED EXHAUST SYSTEMS · DATA CENTERS
SCR & acoustic silencers for data center backup generators.
One engineered solution for lower NOx emissions, controlled noise and reliable backup power. Designed and integrated by Filter Solutions S.L.
Integrated system designNew builds & retrofitEngineering for international projects
SYSTEM ARCHITECTURE / CONCEPTUAL ENGINEERED TO ORDER
- 01Backup generator
- 02AdBlue dosing / mixing
- 03SCR reactor + silencing
- 04Exhaust outlet
Final layout and component order are engineered to suit each engine, site and operating profile.
NOx targetNoise attenuationBackpressure
DIRECT TECHNICAL ANSWER
What emission system does a data center backup generator need?
There is no single configuration. The system is defined from the NOx target, exhaust temperature and flow, maximum allowable backpressure, real duty cycle, acoustic target and available installation space.
Depending on those inputs, the solution may combine an acoustic silencer, SCR with AdBlue/DEF and, where required and technically viable, a DOC or DPF. The aim is to reduce emissions and noise without exceeding the engine's operating limits.
THE SOLUTION
One system. Engineered around your generator.
We manufacture and integrate complete exhaust solutions rather than supplying a standalone catalyst. The core solution combines acoustic attenuation and selective catalytic reduction (SCR), with further treatment when required.
Part of our expertise in stationary engines and emission control solutions.
OPTIONAL MODULE
Diesel oxidation catalyst (DOC)
An additional stage to address CO and hydrocarbons (HC), subject to engine data, operating conditions and emissions targets.
COHC
OPTIONAL MODULE
Diesel particulate filter (DPF)
Particulate control where required, with regeneration strategy and operating temperatures assessed during feasibility engineering.
PMREGENERATION
DESIGN CRITERIA
Designed for the real constraints of standby power.
Backup generators do not behave like continuously operating engines. The system must respect the actual duty cycle without compromising engine operation.
Real operating temperatures
Start-up, short test runs and low-load operation determine SCR activation and performance.
Maximum allowable backpressure
We check exhaust flow and pressure loss against the engine manufacturer’s limits.
Acoustic requirements
Silencer geometry and attenuation targets are engineered alongside the emissions stages.
Space, access & controls
Layouts for enclosures, plant rooms or external skids, with dosing, sensors and serviceability in mind.
DESIGN INPUTS
The data required to size an SCR and acoustic system correctly.
The more complete the real generator data, the more accurately the catalyst, dosing system, silencer and backpressure can be assessed.
| Input | Why it matters |
|---|---|
| Engine make, model and power | Establishes the calculation basis, operating range and OEM limits. |
| Exhaust gas flow | Defines cross-section, gas velocity and system sizing. |
| Temperature profile | Determines SCR activation and AdBlue/DEF dosing strategy. |
| Engine-out NOx and target | Supports catalyst volume and reduction strategy sizing. |
| O₂ and H₂O, when available | Improves exhaust-gas characterisation for catalyst calculations and selection. |
| Maximum allowable backpressure | Allows the complete system to be checked against engine limits. |
| Acoustic target | Defines required attenuation and silencer design. |
| Operating hours, starts and load | Describes the real testing, standby and partial-load duty cycle. |
| Available space and layout | Defines architecture, maintenance access and stack arrangement. |
OUR DELIVERY MODEL
A single technical partner from study to commissioning.
Assess
Engine data, exhaust conditions, emission and acoustic objectives, space and local permit needs.
Engineer
Sizing, pressure-loss checks, mixing, catalyst selection, exhaust and acoustic integration.
Manufacture & integrate
Fabrication and supply of the engineered exhaust assembly, dosing and control components.
Commission & support
Installation coordination, calibration, validation and optional monitoring or maintenance support.
EMISSIONS & PERMITTING
Emission targets depend on the installation — not just the engine.
EU Directive 2015/2193 and national regulations may apply to eligible combustion installations. Local permits, operating hours and project-specific conditions must also be assessed. An SCR is not automatically mandatory for every emergency generator.
EU Medium Combustion Plant Directive Technical and regulatory scope are confirmed during project assessment. No blanket compliance claim is made.COMMON QUESTIONS
The questions engineers ask first.
Is SCR compulsory for every data center standby generator?
No. Applicability depends on rated thermal input, operating hours, national implementation and the conditions of the site permit. We review the target emissions requirements before selecting a technical solution.
Can SCR and the exhaust silencer be supplied as one system?
Yes. We engineer combined or modular configurations based on allowable backpressure, acoustic targets, exhaust temperature, flow and available space.
Can a DOC or DPF be added?
Yes, where required and technically viable. DOC targets CO/HC; DPF addresses particulate matter. Each addition changes the design and pressure-loss budget, and DPF suitability depends on regeneration conditions.
What information is needed to start?
Engine make and model, rated power, exhaust flow and temperature, maximum backpressure, generator duty cycle, acoustic requirement, NOx target, site country and available installation space.
START A PROJECT
Planning a data center generator project?
We assess noise attenuation and NOx treatment together. Share engine specifications, emissions targets and acoustic requirements for an initial feasibility review.
TECHNICAL ASSESSMENT
Useful project data for an initial review
- Engine manufacturer, model and power rating
- Generator quantity and installation location
- Exhaust flow, temperatures and allowable backpressure
- NOx and noise requirements; available footprint
- Operating hours, starts and project timeline
Your enquiry is handled through the existing filtersolutions.tech contact page.