Instrument air, dried, 8 bar(a)

Activity Instrument air, dried, 8 bar(a), GLO: the inventory of 1 kilogram of its reference product, attributional, cut-off.

Calculation maturity: not assessed Design maturity: Concept (research)Not independently reviewedutility-instrument-air:instrument-air-8bara-dried:product:instrument-airReport a problem with this dataset
Research outputAn inventory from a research design at the design maturity its process states, not verified plant data: check its calculation maturity and review status before use. Background activities are referenced by name only; no background data is included. All caveats

What it is

Per 1 kg of dry instrument air at 8 bar(a) and a -40 degC pressure dew point: compressor electricity from the isothermal work and an ASSUMED efficiency, heatless dryer purge, heat to cooling water, condensate to wastewater treatment.

Reference product
1 kilogram of Instrument air, dried, 8 bar(a) (gas, 8 bar(a), 30 degC, grade instrument air, -40 degC pressure dew point)
Chemical
instrument-air
CAS
not available
Code
utility-instrument-air:instrument-air-8bara-dried:product:instrument-air
Dataset
instrument-air-8bara-dried version 0.1.0 · UUID 3be6516b-3389-5119-a874-25a57bf61cb9
Activity UUID
not available (the library assigns none; use the code)
Database
cheme-as-code-atlas-preview-c3ab348 (version preview-c3ab348)
Process
Instrument air, dried, 8 bar(a)
Geography
GLO · background inputs with a site rule link at the user's site location (default DE)
Time period
2026 · valid until 2031
Technology
oil-free multistage compressor, heatless desiccant dryer · level current
Boundary
gate-to-gate: compressor package with coolers and dryer; ambient air is free
Classification
ISIC Rev.4 3530, 3600 (taxonomy/families.yaml (ISIC Rev.4) of the process's families)
System model
attributional, cut-off (docs/system-model.md, methodology 1.1.0)
Allocation
mass, 100 % of the dataset to this product (rule single-output, from default)
one product: nothing to allocate
Rights
CC-BY-4.0

Exchanges per 1 kilogram of Instrument air, dried, 8 bar(a)

As exported: allocated and scaled to the reference product. Provenance: 3 assumed. Pedigree scores (1 best, 5 worst): reliability, completeness, temporal correlation, geographical correlation, further technological correlation.

InputAmountUnitProvenancePedigreeLinked to
Compressor package
feed:electricity
isothermal work of the humid intake, n R T ln(p2/p1), over eta_iso (kmol x J/mol = kJ; / 3600 to kWh)
electricity
0.09604kilowatt hourassumed4 4 3 4 4market for electricity, medium voltage (electricity, medium voltage, DE, site location) in your background (default ecoinvent-3.11-cutoff)
Intercooler and aftercooler heat to cooling water
output:heat-rejected
energy balance: shaft work plus the enthalpy of the intake minus that of the cooled saturated air and the condensate (water-cooled package, all losses to cooling water ASSUMED)
cold, 25 degC
0.09748kilowatt hourassumed4 4 3 4 4Atlas (plant): cooling water service, per kWh heat rejected (Atlas screening proxy) (heat rejected to cooling water, GLO)
compatible: grade the input names cooling-water only; cooling-water (Heat rejected to cooling water, 25/35 degC) is taken; unit kilowatt hour; carrier cold, 25 degC from cold, 25 degC; system model cutoff (one database); allocation mass (single-output); boundary plant gate of a site utility: no utility market yet (docs/markets.md)
Condensate to wastewater treatment
output:condensate
intake moisture minus saturation at 30 degC, 8 bar(a)
0.006322kilogramassumed4 4 3 4 4Atlas (plant): wastewater to treatment, per kg (Atlas unit proxy) (wastewater, by mass, GLO)
compatible: grade the input names wastewater only; wastewater (Wastewater treated) is taken; unit kilogram; system model cutoff (one database); allocation mass (single-output); boundary plant gate of a site utility: no utility market yet (docs/markets.md)

Elementary flows

No elementary flows are exported for this activity (pass-through emissions and free inputs are left out, see the caveats).

Where these numbers come from: each exchange names its source above; the dataset is processes/utility-instrument-air/lca/datasets/instrument-air-8bara-dried.yaml in library version c3ab348.

Used by

No other activity of this database links to it.

How good it is

Review
Not reviewed: no LCI review record yet
Data quality
not available
Mass and carbon closure
Not available: a hand-written dataset: no lca/manifest.json records its balance
Change report
Not available: this build has no change report against an earlier release.

KPI benchmark positions

Not available: no benchmarked KPI for this dataset.

How to use it

Downloads

A file with this activity alone is not available: each file above is the whole database, and the line under it says how to find this activity there.

import bw2data as bd
from cheme_as_code_lci import install

bd.projects.set_current("my-project")   # holds your licensed background + biosphere3
install("cheme-as-code-atlas-preview-c3ab348.xlsx", background="ecoinvent-3.11-cutoff", location="DE")
activity = bd.get_activity(("cheme-as-code-atlas-preview-c3ab348", "utility-instrument-air:instrument-air-8bara-dried:product:instrument-air"))

While any exchange of the database has no mapping, install() writes nothing and only lists the unlinked exchanges. So the last line finds no activity until the gaps are mapped: the download section gives the ways to use the database now.

How to cite

Instrument air, dried, 8 bar(a), from Instrument air, dried, 8 bar(a) (dataset instrument-air-8bara-dried 0.1.0), ChemE-as-Code Process Atlas LCI database preview-c3ab348, activity utility-instrument-air:instrument-air-8bara-dried:product:instrument-air. Cite the Process Atlas paper (in preparation, 2026), by Artur M. Schweidtmann and Jana M. Weber, and the ChemE-as-Code Process Atlas LCI database version preview-c3ab348.

DOI: none yet (the Process Atlas paper is in preparation)

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).

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}
}