Engineering articles and exhibitions
Sizing, efficiency, maintenance and project experience, written so you can quote it directly in your own specifications.
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Marine compressor sizing: duty first, model second
Starting air, instrument air and nitrogen feed have different pressure and cleanliness requirements — the order of decisions matters.
2026-11-13RetrofitScrubber retrofits: short dock windows demand interchangeable interfaces
Lessons from 30 sets across 20+ MSC vessels: interchangeability, complete documents and dock-window logistics matter more than headline parameters.
2026-11-13EfficiencyPM VSD and two-stage compression: where the savings actually come from
VSD saves unloading and throttling losses; two-stage saves compression losses. They suit different duty profiles.
2026-11-13MaintenanceCompressor maintenance: scheduled work is cheaper than breakdowns
Oil, oil filter, air filter, separator and cooler cleaning each have intervals; marine units need extra attention to salt fog and vibration.
2026-11-13ExhibitionMarintec Guangzhou 2026 — meet Shengyi there
In December we exhibit in Guangzhou with marine units on display and on-site sizing support.
2026-11-13Industry news & analysis
COSCO Shipping Energy orders six LNG dual-fuel-ready VLCCs
Announced on 9 November, these 309,000 dwt newbuildings point the marine equipment demand window at 2029–2030 — which makes now the time to fix air-system configuration and class approval routes.
2026-11-09Owner tendersCNOOC EnerTech re-tenders a three-year water-injected single-screw gas compressor agreement
Issued on 5 November, this framework covers oilfield boosting, trunk pipelines and LNG peak-shaving. Its qualification and delivery clauses say more about the owner’s priorities than the equipment specification does.
2026-10-12Owner tendersSinopec re-tenders two batches of centrifugal air compressors with a two-year track-record threshold
Both notices, issued on 4 and 5 November, require bidders to show at least two years of continuous stable operation on comparable units — a threshold that generalises to most plant-air renewal projects.
2026-10-26Policy & standardsMIIT carbon dual-control plan: 500 zero-carbon factories and computing sites by 2030
The plan calls for phasing out inefficient energy-using equipment and for stronger system-level matching of energy-saving equipment — a direct renewal driver for high-consumption utilities such as compressed-air stations.
2026-09-14Policy & standardsR22 multi-split production banned from 2027; refrigerant change means re-validating the whole system
A Ministry of Ecology and Environment notice bars production of R22-based multi-split air-conditioning and heat-pump units from 1 January 2027. A production ban is not a ban on existing installations, but component development must be scheduled now.
2026-09-28Industry eventsComVac ASIA 2026 closes: the yardstick shifts from unit specs to whole-station efficiency
The 20th ComVac ASIA ran in Shanghai on 3–6 November with close to 350 exhibitors and 30-plus forums. The closing coverage put the shift in evaluation criteria plainly.
2026-11-06EngineeringHow to size a marine compressed-air system
Four sub-systems, not one machine: starting air 2.5–3.0 MPa (piston), control air 0.7 MPa, service air 0.7–1.0 MPa and instrument air at −40 °C PDP. Size backwards from the duty list with simultaneity factors and pressure staging.
2026-09-07EngineeringOffshore compressor explosion protection & corrosion: 9 questions
The 40–80% price gap over onshore units buys five things: hazardous-area layout, C5-M coating, seawater cooling, tilt validation and the document chain.
2026-09-21EngineeringDirect, belt or gear drive for marine screw compressors
Continuous duty, scarce maintenance windows and salt fog push marine and offshore sets to direct drive; belt suits small intermittent duty, gear suits high-speed centrifugal.
2026-10-05EngineeringAchieving −40 °C dew point: economics of four drying routes
Refrigerated dryers stop at +3 °C PDP. −40 °C needs desiccant or membrane; the real cost is regeneration purge, not the dryer price.
2026-10-19EngineeringDelivering a packaged air station: 12 nodes from drawing to FAT
A skid closes design, manufacture, testing and compliance in the factory; site work reduces to power, pipe and commissioning. Done well, site time drops from 3 months to 2 weeks.
2026-11-02