This technical page defines the engineering basis, supply boundaries and enquiry data for HRSG-Based Heat Recovery Solutions. Each project is configured around capacity, feed composition, product specification, ambient conditions, available utilities and the owner’s operating requirements rather than a fixed catalogue arrangement.
Engineering of HRSG-Based Heat Recovery Solutions concentrates on gas and steam temperature profiles, pinch and approach temperatures, steam conditions, circulation, gas-side pressure drop, water chemistry, metallurgy, fouling and start-up transients. The selected configuration is verified against normal, minimum, start-up, shutdown and credible upset cases, then checked for operability, maintainability, energy use, process safety and site interfaces before the design is frozen.
Rated capacity, minimum stable load, feed envelope, inlet and outlet conditions, product specification, start-up and shutdown cases, design life and acceptance criteria are agreed before equipment definition is frozen. The review also records utility margins, interfaces, inspection hold points, maintainability constraints and the evidence required for a controlled handover.
Mechanical design and materials
Materials, corrosion allowance, sour-service requirements, piping classes, nozzle design, insulation, coating, supports and maintenance access are coordinated with the actual process conditions and project code hierarchy.
Control, safeguarding and operation
Control philosophy, alarms and trips, cause-and-effect logic, interlocks, start-up and shutdown sequences, safe depressurization and operator access are developed consistently from the P&IDs through functional testing.
Layout, utilities and interfaces
Battery limits, tie-in points, structural loads, cabling, instrumentation, drains, vents, access routes, lifting envelopes and shipping constraints are controlled through coordinated models and interface drawings.
From project definition to delivery
Clear inputs and contract-ready outputs
Proposal quality depends on complete input data and an explicit acceptance basis. The following lists provide a practical starting point and are completed during technical clarification.
Recommended RFQ information
Feed flow, composition and credible operating envelope
Inlet conditions, required product specification and pressure-drop limit
Site and ambient data, hazardous-area classification and HSE requirements
Available utilities with pressure, temperature and capacity
Applicable standards, materials, supply limits and owner document formats
Typical engineering and supply deliverables
Design basis, heat and material balance, and process description
PFDs, P&IDs, equipment list and technical datasheets
Control philosophy, cause and effect, I/O definition and utility summary
Plot plan, 3D model, foundation loads and fabrication drawings
Inspection and test plans, FAT records, final data book and commissioning support
Delham Engineering
Define the scope around real project data
Send the available process data, battery limits and expected document list for a technical proposal. The engineering team will identify missing information through a structured clarification register.
The values are two distinct published CHP project examples, not one HRSG product range. Total thermal output is stated at plant level and must not be mistaken for HRSG steam duty.
Published values apply only to the cited equipment family and stated scope; they are not universal code limits or a Delham rating/guarantee.
Parameter
Published value
Reference basis
Applicability / limit
Natural-gas CHP live-steam example
17.5 bar; 242 °C
Published steam conditions for one CHP project; plant maximum heat output was 40 MWth.
Project example only; the 40 MWth plant value is not an isolated HRSG rating.
Biomass CHP live-steam example
120 bar; 520 °C
Separate published biomass CHP project; plant maximum heat output was 35 MWth.
Do not combine with the natural-gas case to imply a common HRSG envelope; gas turbine/boiler exhaust and steam-cycle design govern.
HRSG design basis needed
Gas-turbine exhaust flow, temperature and load cases
Published engineering descriptions identify HRSG output as dependent on the upstream gas turbine and steam cycle.
No universal steam-capacity range is inferred from plant gross output; obtain OEM exhaust curves and define supplemental firing/duct-burner cases.