Utility dataset: saturated steam at 11 bar(a) from a natural-gas fired boiler, per tonne of steam, from the boiler's energy balance and the combustion stoichiometry of methane, with combustion emissions from EPA AP-42 Section 1.4 for a small uncontrolled boiler; boiler class and design parameters ASSUMED.
Steam generation, natural-gas boiler, saturated 11 bar(a)
Utility dataset: saturated steam at 11 bar(a) from a natural-gas fired boiler, per tonne of steam, from the boiler's energy balance and the combustion stoichiometry of methane, with combustion emissions from EPA AP-42 Section 1.4 for a small uncontrolled boiler; boiler class and design parameters ASSUMED.
Research outputNot engineering advice and not an approved design: do not use it for construction, operation or safety decisions. What this means
Overview
- Capacity
- per unit of the utility delivered (the dataset's basis); no plant size, but its emission factors are of a boiler below 100 MMBtu/h heat input, about 30.7 t/h of steam
What goes in and out
In
Out
- SteamMain product
- Carbon dioxideEmission
- WaterEmissioncombustion water vapour
- WastewaterWaste
Utilities: Electricity
Life cycle assessment
No footprint assessed yet; the process is part of the life-cycle inventory below.
In the open LCI database (cheme-as-code-atlas-preview-c3ab348) as Steam, saturated, 11 bar(a).
Download it for Brightway, openLCA and other tools.
In the LCI database: system model, datasets and KPIs against the benchmarks
In the LCI database
- System model
- attributional, cut-off (methodology 1.1.0)
- Allocation
- mass (single-output, from default) · product:steam 100 %
- Allocation findings
- none
- Change report
- Not available: this build has no change report against an earlier release.
- Dataset pages
- Steam, saturated, 11 bar(a)
KPI benchmark positions: not available (no benchmarked KPI for this process's datasets).
Maturity and review
Design maturity Concept (claimed): An idea or first flowsheet; numbers are rough. No independent engineering review yet. Automated checks passing is not a review.
Calculation maturity, from the checked evidenceNot assessed
The process has no maturity report (cheme maturity, checks/maturity.json), so no calculation maturity is established.
No level shownThe design maturity (Concept) is the manifest's claim, not evidence. A level appears here once the process's repository holds a current report from
cheme maturity --write.Artifact completeness
Which deliverables exist. They never raise a calculation maturity level: a drawing from unchecked numbers is still unchecked.
Not reported without a maturity report.
Independent review
Not independently reviewed
No independent engineering review yet. Automated checks passing is not a review.
Set by people only. Reaching a calculation maturity level or passing automated checks is not an independent review or an approval.
Where the evidence comes from
- Report
processes/utility-steam-ng-boiler/checks/maturity.json(not in the library)- Method
- How ChemE-as-Code checks the levels (requirement by requirement)
Open items
0 open items · 0 closed
New action itemNew engineering holdNew technical queryNew design changeAll issues
Sources
- Library version
- c3ab348 (process last changed in c3ab348)
- Data
- Catalog record (JSON) · CC-BY-4.0
- Files
- View the files on GitHub · change history and authors
References
- Wagner, W. and Pruss, A. (2002) The IAPWS formulation 1995 for the thermodynamic properties of ordinary water substance for general and scientific use, J. Phys. Chem. Ref. Data 31:387
- Bell, I. H., Wronski, J., Quoilin, S. and Lemort, V. (2014) Pure and pseudo-pure fluid thermophysical property evaluation and the open-source thermophysical property library CoolProp, Ind. Eng. Chem. Res. 53:2498
- Prohaska, T. et al. (2022) Standard atomic weights of the elements 2021 (IUPAC Technical Report), Pure Appl. Chem. 94:573
- U.S. EPA (2026) AP-42, Compilation of Air Emissions Factors, Section 1.4 Natural Gas Combustion, April 2026, Tables 1.4-1 and 1.4-2
- U.S. EPA (2026) AP-42, Section 1.4 Natural Gas Combustion, October 2026 (later edition; the factors used here are unchanged)
- U.S. EPA (1998) AP-42, Fifth Edition, Section 1.4 Natural Gas Combustion, July 1998 (the factors used here are the same)
- U.S. DOE Advanced Manufacturing Office (2012) Steam Tip Sheet #3, Use Feedwater Economizers for Waste Heat Recovery, DOE/GO-102012-3412
- U.S. DOE Advanced Manufacturing Office (2012) Steam Tip Sheet #9, Minimize Boiler Blowdown, DOE/GO-102012-3406
- U.S. DOE Advanced Manufacturing Office (2012) Steam Tip Sheet #23, Install an Automatic Blowdown-Control System, DOE/GO-102012-3402
- U.S. DOE Advanced Manufacturing Office (2012) Steam Tip Sheet #26A, Consider Installing a Condensing Economizer, DOE/GO-102012-3393
How to cite
For the data, cite the Process Atlas paper; for the platform that builds and checks it, the ChemE-as-Code paper.
Schweidtmann, A. M. & Weber, J. M. (2026, in preparation). Process Atlas: an open, git-native, reproducible library and life cycle inventory of chemical processes (working title).
For this process: "Steam generation, natural-gas boiler, saturated 11 bar(a)", ChemE-as-Code process library, version c3ab348.
BibTeX
@unpublished{schweidtmann_process_atlas,
author = {Schweidtmann, Artur M. and Weber, Jana M.},
title = {{Process Atlas: an open, git-native, reproducible library and life cycle inventory of chemical processes (working title)}},
year = {2026},
url = {https://atlas.cheme-as-code.org},
note = {in preparation}
}Schweidtmann, A. M. (2026, in preparation). ChemE-as-Code: An Open-Source Platform for AI-Accelerated Chemical Process Engineering (working title).
BibTeX
@unpublished{schweidtmann_cheme_as_code,
author = {Schweidtmann, Artur M.},
title = {{ChemE-as-Code: An Open-Source Platform for AI-Accelerated Chemical Process Engineering (working title)}},
year = {2026},
url = {https://cheme-as-code.org},
note = {in preparation}
}