{ "authors": [], "basis": { "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" }, "benchmarks": [], "chemistry": { "inputs": [ { "chemical": "water", "grade": null, "inventory_key": "feed:feedwater", "note": "demineralised make-up; no condensate return", "role": "feedstock" }, { "chemical": "methane", "grade": null, "inventory_key": "feed:natural-gas", "note": "natural gas, taken as pure methane (ASSUMED)", "role": "feedstock" }, { "chemical": "air", "grade": null, "note": "combustion air, free; its O2 is feed:O2, the N2 fixed as NOx and N2O is feed:N2", "role": "feedstock" } ], "outputs": [ { "chemical": "steam", "grade": "mp-11bara", "inventory_key": "product:steam", "role": "main-product" }, { "chemical": "carbon-dioxide", "grade": null, "inventory_key": "emission:CO2", "role": "emission" }, { "chemical": "water", "grade": null, "inventory_key": "emission:H2O", "note": "combustion water vapour", "role": "emission" }, { "chemical": "wastewater", "grade": null, "inventory_key": "output:blowdown", "role": "waste" } ], "utilities": [ { "chemical": "electricity", "grade": null, "inventory_key": "feed:electricity", "role": "utility" } ] }, "description": "", "design_basis": null, "engineering": null, "facets": { "feedstock_basis": [ "fossil", "water" ], "product_classes": [], "region": "generic", "unit_operations": [ "combustion", "heat-exchange" ] }, "families": [ "steam-and-heat" ], "gap_count": 0, "gates": null, "id": "utility-steam-ng-boiler", "issues": { "closed_count": 0, "list_url": "https://github.com/ChemE-as-Code/process-library/issues?q=is%3Aissue%20label%3A%22process%3Autility-steam-ng-boiler%22", "new": { "action": "https://github.com/ChemE-as-Code/process-library/issues/new?template=1-action-item.yml&labels=process%3Autility-steam-ng-boiler&process=utility-steam-ng-boiler", "change": "https://github.com/ChemE-as-Code/process-library/issues/new?template=4-design-change.yml&labels=process%3Autility-steam-ng-boiler&process=utility-steam-ng-boiler", "hold": "https://github.com/ChemE-as-Code/process-library/issues/new?template=2-engineering-hold.yml&labels=process%3Autility-steam-ng-boiler&process=utility-steam-ng-boiler", "process": "https://github.com/ChemE-as-Code/process-library/issues/new?template=6-process-development.yml&labels=process%3Autility-steam-ng-boiler&process=utility-steam-ng-boiler", "tq": "https://github.com/ChemE-as-Code/process-library/issues/new?template=3-technical-query.yml&labels=process%3Autility-steam-ng-boiler&process=utility-steam-ng-boiler", "tracker": "https://github.com/ChemE-as-Code/process-library/issues/new?template=7-process-tracker.yml&labels=process%3Autility-steam-ng-boiler&process=utility-steam-ng-boiler" }, "open": [], "open_by_gate": {}, "open_count": 0, "private": false, "repository": "ChemE-as-Code/process-library" }, "keywords": [ "utility", "steam", "MP steam", "boiler", "natural gas", "combustion" ], "lca": null, "lci_gaps": [], "maintainers": [], "maturity": "concept", "preliminary": false, "provenance": { "library_commit": "c3ab3488c602bc797fdc98feffd4578375150dd0", "previews": null, "previews_stale": false, "source_commit": "c3ab3488c602bc797fdc98feffd4578375150dd0" }, "publication": { "license": "CC-BY-4.0", "status": "public" }, "references": [ { "title": "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" }, { "title": "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" }, { "title": "Prohaska, T. et al. (2022) Standard atomic weights of the elements 2021 (IUPAC Technical Report), Pure Appl. Chem. 94:573" }, { "title": "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", "url": "https://gaftp.epa.gov/ap42/ch01/s04/final/c1s4_2026.pdf" }, { "title": "U.S. EPA (2026) AP-42, Section 1.4 Natural Gas Combustion, October 2026 (later edition; the factors used here are unchanged)", "url": "https://gaftp.epa.gov/ap42/ch01/s04/final/c1s4_10_2026.pdf" }, { "title": "U.S. EPA (1998) AP-42, Fifth Edition, Section 1.4 Natural Gas Combustion, July 1998 (the factors used here are the same)", "url": "https://gaftp.epa.gov/ap42/ch01/s04/final/c01s04_jul1998.pdf" }, { "title": "U.S. DOE Advanced Manufacturing Office (2012) Steam Tip Sheet #3, Use Feedwater Economizers for Waste Heat Recovery, DOE/GO-102012-3412", "url": "https://www.energy.gov/sites/prod/files/2014/05/f16/steam3_recovery.pdf" }, { "title": "U.S. DOE Advanced Manufacturing Office (2012) Steam Tip Sheet #9, Minimize Boiler Blowdown, DOE/GO-102012-3406", "url": "https://www.energy.gov/sites/prod/files/2014/05/f16/steam9_blowdown.pdf" }, { "title": "U.S. DOE Advanced Manufacturing Office (2012) Steam Tip Sheet #23, Install an Automatic Blowdown-Control System, DOE/GO-102012-3402", "url": "https://www.energy.gov/sites/prod/files/2014/05/f16/steam23_control_system.pdf" }, { "title": "U.S. DOE Advanced Manufacturing Office (2012) Steam Tip Sheet #26A, Consider Installing a Condensing Economizer, DOE/GO-102012-3393", "url": "https://www.energy.gov/sites/prod/files/2014/05/f16/steam26a_condensing.pdf" } ], "repository": { "access": "public", "path": "processes/utility-steam-ng-boiler", "url": "https://github.com/ChemE-as-Code/process-library" }, "representations": [], "summary": "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.", "title": "Steam generation, natural-gas boiler, saturated 11 bar(a)", "validation": { "status": "unreviewed" }, "viewer": null }