Marine & Offshore HVAC-R Systems are integrated environmental control solutions specially engineered for vessels and offshore installations, integrating ventilation, heating, air conditioning and process refrigeration. All equipment adopts marine-grade anti-corrosion, shock-resistant and explosion-proof design, fully complying with IMO conventions and classification society rules to ensure crew comfort, equipment safe operation and hazardous area safety in harsh saltwater marine environments.

HVAC-R: Heating, Ventilation, Air Conditioning and Refrigeration

Marine: Vessel-used (for commercial ships and special vessels)

Offshore: Offshore engineering (for offshore platforms, floating production facilities and other marine facilities)

System Definition

Marine & Offshore HVAC-R system is an integrated environmental control system tailored for harsh marine working conditions, including high salt spray, hull rolling & tilting, continuous vibration, limited space and hazardous explosion-proof zones. It covers crew comfort ventilation, air renewal, temperature & humidity regulation, equipment heat dissipation, process refrigeration and fire protection, fully complying with international maritime conventions and classification society rules to ensure safe and stable operation of marine facilities.

Application Scenarios

● Marine Field

Widely applied in container ships, bulk carriers, oil & chemical tankers, cruise ships, ro-ro ships, refrigerated cargo ships, research vessels, platform supply vessels (PSV) and other types of ships. It covers all cabin scenarios including crew accommodation, wheelhouse, public cabins, galley, engine room, switchboard room, cargo hold and food cold storage.

● Offshore Field

Applicable to offshore fixed drilling platforms, semi-submersible platforms, FPSO (Floating Production Storage and Offloading units), offshore wind power platforms, floating LNG facilities and other offshore installations. It serves platform living quarters, central control rooms, explosion-proof operation zones, process equipment cooling and low-temperature storage of hazardous chemicals.

Core Characteristics (vs. Onshore HVAC)

Compared with onshore HVAC systems, marine & offshore HVAC-R has five core advantages: strong salt spray corrosion resistance, anti-rolling and anti-vibration capability, modular & compact design for limited space, graded explosion-proof for hazardous areas, and full maritime regulation compliance, adapting to long-term extreme and complex marine environments.

System Composition

● Ventilation System

Consists of marine fans, fire dampers, smoke exhaust valves, silencers, air filter units and explosion-proof louvers. It realizes fresh air supply, cabin exhaust, harmful gas dilution, fire smoke extraction and negative pressure isolation.

● Heating & Air Conditioning System

Includes marine air handling units (MAHU), water chillers, DX air conditioners, electric heating and waste heat heating devices. It provides constant temperature & humidity, dehumidification, air purification and zoned independent temperature control to meet crew comfort and equipment operation requirements.

● Refrigeration System

Divided into marine domestic cold storage refrigeration and offshore process refrigeration, covering food refrigeration & freezing, process medium low-temperature cooling and hazardous chemical constant-temperature storage. Adopts low-GWP environmentally friendly refrigerants in line with maritime environmental regulations.

● Automatic Control & Fire Linkage System

Equipped with special marine building management system (BMS) and intelligent temperature & humidity controllers, supporting remote monitoring, automatic adjustment and fault alarm. It links with fire protection system to cut off air ducts and stop equipment automatically in case of fire.

Applicable Standards & Certification

Compliant with IMO conventions, MARPOL anti-pollution conventions, IEC marine electrical standards and ATEX explosion-proof standards; available for type approval by major classification societies including CCS, DNV, ABS and LR.