A datasheet is a supplier’s tightest summary of a unit, and also its most compressed one. Every figure on the page is true, and every figure carries conditions that the layout may push into a footnote. The buyer’s skill is not memorizing terms; it is knowing which numbers decide the purchase and which conditions decide the numbers.
Capacity: whose condition, whose units
Capacity is the headline figure and the most conditional one. A capacity quoted at a particular inlet concentration, temperature and pressure is a promise about that condition; the site’s vapor may differ in all three. The useful reading asks what condition the figure assumes, then compares it honestly against the site’s real load profile, peaks included, rather than against the biggest number on the neighbor’s datasheet.
Recovery rate and the target behind it
The recovery or emission figure answers the question the project actually cares about, and it too carries a condition: the inlet concentration at which it was measured. Recovery percentages across different inlet concentrations are not comparable, and the datasheet that states its basis plainly is telling you something about the supplier’s habits.
Power deserves reading twice. The installed electrical figure and the running consumption answer different questions, and both matter: one sizes the supply, the other prices the operation. Where the unit starts against load or cycles frequently, the starting behavior can be the number that decides whether the site’s electrical reality copes.
The quiet numbers that prevent surprises
Connection sizes and positions decide installation cost more than any other line on the page. Weight and footprint decide whether the equipment reaches its position. Noise decides where it may stand near neighbors. And the service access requirements decide whether maintenance will be a routine or a negotiation. None of these wins a comparison on paper; all of them are remembered on installation day.
A reading order for any datasheet
- Find the conditions behind the capacity figure and write them down;
- Compare those conditions against the site’s real vapor profile;
- Read the recovery figure together with its stated inlet basis;
- Separate installed power from running consumption and check starting behavior;
- Check connections, weight, footprint and noise against the site plan;
- List every question the datasheet left unanswered and send it to the supplier.
Datasheet lines and the questions to ask
| Line | What it answers | Question to ask |
|---|---|---|
| Capacity | How much vapor the unit handles | At what inlet condition? |
| Recovery rate | What leaves the treated stream | Measured against which inlet basis? |
| Power figures | Supply size and running cost | What does starting against load require? |
| Connections | How the unit meets the site | Do sizes and positions match our piping? |
| Service requirements | What ownership will feel like | What access does routine maintenance need? |
From datasheet to decision
The datasheet’s job is to make a shortlist possible; the buyer’s job is to test the shortlist against the site. Units whose figures survive the comparison with real conditions are the ones that commission quietly. The datasheet that answers most questions before they are asked is, in itself, evidence about the supplier behind it.
Frequently asked questions
Is the biggest capacity figure always the safe choice?
No. Oversized units run far from their design point, cycling and idling their way through light loads. The safe choice is the unit whose honest condition-matched capacity brackets the site’s profile with sensible margin.
What if two datasheets quote recovery differently?
Ask both suppliers for the inlet basis and the measurement context. Once the conditions are aligned, the comparison becomes meaningful; until then, the figures are answering different questions.
Which single datasheet omission causes most trouble?
Starting and cycling behavior against electrical limits. It surfaces on the first unloading day at a site whose supply was sized from running figures alone, and it is entirely avoidable by reading the power line carefully.
Luoyang Wohong Petrochemical Equipment Co., Ltd. designs and manufactures vapor recovery units, membrane separation skids and condensers for fuel depots, terminals and retail sites. Contact us for duty assessment and equipment selection support.