Renowned engineering excellence

MILITARY HVAC-R SPECIAL EQUIPMENT

Special Equipment

NBC (NUCLEAR, BIOLOGICAL AND CHEMICAL) UNIT & FILTER INTEGRITY MONITORING
OIL-FREE MARINE CHILLERS
HIGH-CAPACITY FAN COILS & OVERPRESSURE CONTROLLERS
REFRIGERATION CONDENSING UNITS
ENVIRONMENTAL CONTROL UNIT (ECU)

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NBC (NUCLEAR, BIOLOGICAL AND CHEMICAL) UNIT & FILTER INTEGRITY MONITORING

Our NBC Units are designed to provide filtered decontaminated air within an airtight enclosure to ensure that military personnel are sheltered from threats such as nuclear, biological and chemical agents. These protected “citadel” areas are overpressured with excess pressure bleeding enabled by special blast-valves. These blast-valves have been thoroughly shock tested to meet military standards.

The NBC units boast low magnetic signature, and allow for easy and safe removal of contaminated filters. The integrated electric heater warms the air to avoid ice build up and maintains the relative humidity within the range of the anti-aerosol/carbon filters.

Our NBC filtration systems have an integrated device to accurately monitor and test filter integrity. This revolutionary device has very sensitive yet robust artificial intelligence. It provides integrity alarm signals to verify the condition of the highly important gas-warfare filtration system. Its compact size allows it to be housed within NBC units, either in new installations or retrofitted into existing units.

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NBR unit


The advantages are

  • Increased security (filters are automatically and continuously monitored for leakage and saturation)
  • Cost savings (filters can now be used an unprecedented 2 years)
  • Service benefits (no mission interruption due to need for filter maintenance at base)
  • Greater efficiency (interfaces with SMS for filter status indication, and rapid change from normal ship mode to gas alarm mode)

 

OIL-FREE MARINE CHILLERS

BRONSWERK has revolutionized marine chiller standards with its oil-free chillers. These meet the highest Navy standards for shock, vibration, noise and EMI. They are cost-effective, reliable, efficient and environmentally friendly (they use a low-pressure refrigerant). Systems are designed to operate under extreme ship movement and in very hot, salt-laden atmospheres.

The chillers use High-Speed Centrifugal Compressors, resulting in a remarkably simple design: no oil circuit, no gearbox and no mechanical bearings (the compressor uses industrially proven magnetic bearings). Oil-related maintenance problems are eliminated. Control panels and electrical devices, unit frame and pipe supports, as well as heat exchangers – all meet rigorous shock requirements. The electrical power filter-rectifiers meet EMC and harmonic requirements. Servicing is made easier due to electronic diagnostics of compressor and system parameters.

 

HIGH-CAPACITY FAN COILS & OVERPRESSURE CONTROLLERS

Fan Coil Units (FCUs) manufactured by BRONSWERK provide high-capacity local cooling and heating (electric or hot water). These are high-performance, compact and lightweight units which come completely pre-packaged. We offer both deck-mounted and ceiling-mounted units, with either left- or right-hand connections. Low noise levels allow the unit to be hard mounted to the ship’s structure. They are shock tested to MIL-S-901D standards, and thoroughly factory tested on performance according to ARI 440-98, ASHRAE 79-91 or MIL-A- 23798 C standards.

All of BRONSWERK’s over pressure controller technology is accurate and reliable, with no disturbance of performance resulting from shipmovement. Resistant to shock and vibration, they also offer easy accessibility for inspection and maintenance.

SPRING LOADED CONTROLLERS (SL) are economical, and can maintain a differential pressure between 100 and 1000 Pa. (the desired value is factory-set). Provided there is insufficient overpressure, the outlet opening is completely shut off by the damper. This position can be blocked manually.

PNEUMATICALLY CONTROLLED CONTROLLERS (PC) can serve both as an overpressure or air flow regulator by incorporating a pneumatic control which measures the differential pressure. When the regulator is used for air-flow control, air pressure measuring points can be chosen before and after an internal orifice. The damper will move to its full open position if air pressure of the PC system drops below the required minimum. When a counter pressure (outside explosion) occurs, the outlet opening will close immediately.

 

REFRIGERATION CONDENSING UNITS

BRONSWERK technology in marine condensing units allow for a compact, quiet operation. The dual condensing unit consists of two multi-cylinder, direct-driven reciprocating compressors complete with two shell and tube sea water condensers, receivers, refrigerant control panel, and necessary safety controls, pressure gauges and valves. The entire cooling load can be handled by one condensing unit, leaving the other as 100% standby. The units are designed for use with R134a refrigerant. Our designs ensure both easy installation and minimum space requirements.

 

ENVIRONMENTAL CONTROL UNIT (ECU)

BRONSWERK is an industry specialist in Environmental Control Systems (ECS) which offer integrated climate control. Our ECU is compact, reliable, lightweight, low noise and easy-to-use, operate and service. The unit casing is constructed of aluminum, AISI 316L stainless steel which is resistant against salt spray, oil vapor and chemical agents. They provide thermal control to the Electro Optical Module of the ADATS vehicle.