Engineering Onboard Climate Control
M A R I N E H V A C-R
Knowledge for optimal efficiency
MARINE HVAC-R
ADVANTAGE S
2
KNOWLEDGE FOR OPTIMAL EFFICIENCY
The BRONSWERK Advantage
It’s like the ideal day at sea when conditions come together perfectly: BRONSWERK
offers a rare convergence of specialized products, customized solutions and quality of
client service. At BRONSWERK we are driven to excellence in marine HVAC-R design
and are at the forefront of innovation. Our products and installations exceed the
highest international standards. Our engineers bring 250 years of cumulative experience, with deep knowledge of ship engineering and mechanical system design for all
types of vessels. We are sea experts; we know how rigorous and varied climate conditions can be and the environment challenges you face. Since 1947 BRONSWERK has
excelled in delivering quality marine HVAC-R solutions around the globe. Our commitment to you is to deliver the most innovative, customized HVAC-R solution at a competitive price, and on time.
At BRONSWERK we believe in teamwork. We service your business, whether it’s a
small-scale or large-scale application, with a highly efficient team of specialists dedicated to you. Each team consists of a project manager, engineers and designers. Our
relationship with you begins with consultation to clarify objectives, deliverables and
expectations. Preliminary design is followed by detailed execution and final preparation of your HVAC-R system. Our involvement extends into the ship’s integrated design
phase and, after ship launch, we provide ongoing system support. BRONSWERK quite
simply offers quality and innovation unmatched in the industry, together with complete lifecycle support. We are understandably proud of our 100% client satisfaction
and referral rate.
For large or small vessels,
we are your partner.
QUALIT Y SYSTEMS.
INNOVATI VE DE SIGNS.
Higher efficiency and better climate control
even in extreme conditions.
the only climate you can control is onboard
BRONS WERK MARINE HVAC-R
From design to implementation,
we deliver engineering ingenuity.
RENOWNED ENGINEERING EXCELLENCE
ENGINEERING E XCELLENCE A ND INNOVATION A RE T WO OF OUR
KEY STRENGTHS. BRONSWERK ENGINEERS WORK TO MEET EACH
INDI V IDUA L CLIENT ’S NEEDS, WHE THER IT ’S A N H VAC-R S YS TEM
F O R A T U G , F E R R Y, P A S S E N G E R V E S S E L O R T A N K E R . S M A L L - A N D
L ARGE - SC ALE PROJEC TS RECEIVE EQUAL PRIORIT Y AND CUSTOMER
CARE. OUR SUPPORT IS CONSISTENT – FROM ADVICE SHOULD THE
SHIP DESIGN CHANGE, TO AFTER-L AUNCH WARR ANT Y AND SERVICE.
Our engineers have more than 250 years combined experience in worldwide markets,
in both geographic and segment industries. Our knowledge of HVAC-R systems for
marine use is unsurpassed in the industry. Our team of engineers, detail designers,
project managers and site supervisors is at your service.
For marine vessels we design all types of HVAC-R systems. Your complete HVAC-R
solution includes:
•Heat load analysis
•Conceptual, basic and detail system design
•Tailored equipment design and manufacturing to meet special needs
•Procurement of components and materials
•Installation and/or on-site supervision (when required)
•Testing and commissioning of HVAC-R system
•After-sales service and spare parts (worldwide)
•Warranty
BRONS WERK MARINE HVAC-R
MARINE HVAC-R
ENGINEERING SKILLS
BRONSWERK technology is low-noise and low-vibration. All systems are cost-effective,
with easy maintainability and high reliability. Our product innovation means we offer
efficiency systems with greater adaptability and enhanced technology. All equipment
designs have pitch and roll tolerance. Lightweight, with low amperage draw, our
customized HVAC-R products represent the most solid technical package at the most
competitive price. We continue to lead innovative research and development on chillers
using an oil-free, frictionless, magnetic bearing compressor.
5
HIGHE ST STANDARDS
All of our projects are held up to rigorous quality standards. Bronswerk relies on its
project roadmap and the Project Management Body of Knowledge (PMBOK) method to
ensure that we meet your highest expectations and deliver your system on-time and
on-budget. The PMBOK is process-based, giving our client a descriptive overview of all
accomplished processes. This approach, created by the Project Management Institute
(PMI), is consistent with our ISO 9000 certification.
The B R O N S W E R K P R O J E C T R O A D M A P consists of five principal stages:
1.Project Kick-Off
In this phase we plan your project and lay the foundations for successful implementation. We make and share the strategic decisions that are crucial to your project:
•Define your system goals and objectives
•Clarify the scope of the system
•Define your project schedule, budget plan, and execution sequence
•Establish the project organization, including representatives from your organization
2.System Preliminary Design
In this phase we deliver the Single Line Diagrams and supporting Heat Load Calculations to ensure that the design will meet your specified needs. If vessel modifications
are made during this stage, we modify the HVAC-R design accordingly.
3.System Detailed Execution
With your agreement on the preliminary design, in this phase the team prepares all
the supporting detailed engineering work:
•Equipment Diagrams
•Special Equipment Designs
•Complete Equipment Lists
•Hot Water/Chilled Water Diagrams
•Detailed calculations to ensure that the system conforms to acceptable levels of pressure drops, noise, and vibration
During this phase we also deliver the actual equipment and ducting that make up your
system and, if desired, we install the HVAC-R system or oversee the installation. We
also manufacture any specialized equipment that is required to meet your needs and
conduct Factory Acceptance Tests in our premises to certify that the equipment meets
the highest standards.
4.System Final Preparation
In this phase we deliver training, as well as conduct the required testing and commissioning. It is critical to train maintenance personnel to protect your investment. We
offer instruction at our training facilities on both system and special equipment for
operators, crew maintainers and shore maintainers. Testing and Commissioning can be
a general T&C approach or more rigourous Harbor & Sea Acceptance Tests depending
on the requirements.
5.Ship Launch & Support
In this phase we deliver training, as well as conduct the required testing and commissioning. It is critical to train maintenance personnel to protect your investment. We
offer instruction at our training facilities on both system and special equipment for
operators, crew maintainer and shore maintainers. Testing and Commissioning can be
a general T&C approach or more rigourous Harbor & Sea Acceptance Tests depending
on the requirements.
We create and build
custom solutions to meet
your special needs.
MARINE HVAC-R
T YPE OF HVAC S YSTEMS
6
C USTOMIZED HVAC-R S OLUTIONS
At BRONSWERK, we don’t deliver a set of specifications. We meet your unique needs.
After a thorough assessment of your objectives and requirements, our engineers design
the best HVAC-R solution for your vessel. Air conditioning systems on marine vessels
generally can be divided into one of four basic types, determined by how the final
cooling and heating are attained within the space. We design the optimum system by
using various combinations of the following basic four types of A/C systems depending
on your needs.
ALL-WATER SYSTEMS
ALL-AIR SYSTEMS (HIGH OR LOW PRESSURE)
All-water systems are those with fan coil and unit
ventilator or valance-type room terminals. Air is supplied by an inlet through the bulkhead or by infiltration.
Cooling and dehumidification are achieved by circulating
chilled water through a finned coil in the unit. Heating
is provided by supplying hot water through the same or a
separate coil.
An all-air system provides complete sensible and latent
cooling capacity in the cold air supplied by the system.
Heating can be accomplished by the same air stream,
either in the central system or at a particular zone. Allair systems are for applications in which the only cooling
medium used directly within the conditioned space is air.
They may be arranged in various ways for transmitting
and distributing the air to and within the space, as well
as controlling the space temperature and humidity conditions. Central air-handling units can provide heating
and cooling to multiple compartments. The outside air is
mixed with the return air from the conditioned space.
System Advantages (+)
1.Flexible and readily adaptable to GA requirements.
2.Provides individual room control.
System Disadvantages (-)
1.No positive ventilation is provided unless bulkhead
openings are used.
2.No humidification is provided.
3.Seasonal change over is required.
4.Maintenance and service work has to be done in the
occupied areas.
5.Extensive water piping.
6.Limited noise control.
Individual adjusting of temperature can be done manually
by opening / closing the supply air terminal or by local
reheating. Outside air is mixed with return air from the
compartments, at a ratio of approximately 40 % outside air
and 60 % return air.
System Advantages (+)
1.The central plant is located in unoccupied areas,
thereby facilitating operating and maintenance, noise
control and choice of suitable equipment.
2.Seasonal changeover is simple and readily adaptable to
climatic control.
3.Gives a wide choice of zonability, flexibility, and
humidity control under all operating conditions.
4.Allows good design flexibility for optimum air distribution, draft control, and compartment requirements.
5.Well suited to applications requiring unusual exhaust
makeup.
6.Adapts to winter humidification.
7.Improved air quality.
8.Control of noise levels.
System Disadvantages (-)
1.Requires additional duct clearance.
2.Air balancing requires great care.
3.Accessibility to terminals demands close cooperation
between naval architects and mechanical and structural engineers.
Multiple systems for different
environments and conditions.
AIR AND WATER SYSTEMS
DIRECT E XPANSION SYSTEMS (DX)
An air-and-water system is one in which both air and
water (cooled or heated in a central plant room) are
distributed to room terminals to be reheated if required.
The standard is electric re-heating. The air component is
comprised of central air conditioning equipment, a duct
distribution system, and a room supply air terminal box.
Cooling is accomplished by the direct expansion of a
refrigerant in a cooling coil (DX system).
The supply air (called primary air) usually has a constant
volume which is determined by:
•Ventilation requirements
•Required cooling capacity at maximum cooling load
•Maximum cooling capacity following changeover to the
winter heating cycle, when chilled water is no longer
circulated and heating is required
The secondary cooling (or local cooling) is determined by
the individual space’s cooling requirements and is provided by Fan Coil Units located in the space.
System Advantages (+)
1.Individual room temperature control.
2.Separate sources of heating and cooling for each space
available as needed, to satisfy a wide range of load
variations.
3.Dehumidification & filtration are performed in a central
plant room remote from conditioned spaces.
4.Outdoor air supply is positive.
5.High air quality.
The DX system includes a refrigerant condensing unit
that can be either a seawater-cooled type, or an aircooled type. More than one evaporator cooling coil can
be connected to a single condensing unit (co-balanced).
DX systems are generally confined to the smaller and
intermediate tonnage air conditioning applications (less
than 50 tons) and are used for all-air systems / air-water
systems.
System Advantages (+)
1.Simplified system.
2.Localized piping system.
3.Lower off-coil temperatures.
4.Compact equipment.
5.Low weight.
System Disadvantages (-)
1.Typically preferred one DX Condensing Unit to one AHU
or FCU.
2.Not recommended for multiple users.
3.Large capacities not permitted for safety reasons
(Refrigeration Code).
System Disadvantages (-)
1.Air supply is usually constant, with no provision for
shutoff.
2.Not applicable to space with high exhaust requirement.
3.Higher energy consumption, due to increased power
required by the primary pressure drop in the terminal
units.
4.Controls tend to be more complex than for all-air systems.
5.A low chilled water temperature is needed to control
space humidity adequately.
6.Seasonal changeover is necessary.
BRONS WERK MARINE HVAC-R
www.bronswerkgroup.com
WORLDWIDE KNOWLEDGE
ENGINEERING INNOVATION
BRONSWERK Onboard Climate Engineering®, headquartered in Montreal, Quebec,
Canada, is a premier global provider of complete marine HVAC-R solutions for the
merchant marine, military and offshore industries. BRONSWERK customized HVAC-R
solutions are designed to meet the individual needs of its clients, from conception to
manufacture and after-sales service. We specialize in environmentally friendly
systems that are engineered to perform in the most complex sea environments and
comply with the highest international standards. Through our innovative, teamoriented approach, BRONSWERK delivers HVAC-R solutions in a timely manner and
at a competitive price. BRONSWERK is an accredited ISO 9001 organization.
ONBOARD CLIMATE ENGINEERING
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