Knowledge for optimal efficiency
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1 Engineering Onboard Climate Control Knowledge for optimal efficiency MARINE HVAC-R
2 MARINE HVAC-R ADVANTAGES 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.
3 QUALITY SYSTEMS. INNOVATIVE DESIGNS. Higher efficiency and better climate control even in extreme conditions. the only climate you can control is onboard BRONSWERK MARINE HVAC-R
4 From design to implementation, we deliver engineering ingenuity. RENOWNED ENGINEERING EXCELLENCE ENGINEERING EXCELLENCE AND INNOVATION ARE TWO OF OUR KEY STRENGTHS. BRONSWERK ENGINEERS WORK TO MEET EACH INDIVIDUAL CLIENT S NEEDS, WHETHER IT S AN HVAC-R SYSTEM FOR A TUG, FERRY, PASSENGER VESSEL OR TANKER. SMALL - AND LARGE - SCALE PROJECTS RECEIVE EQUAL PRIORITY AND CUSTOMER CARE. OUR SUPPORT IS CONSISTENT FROM ADVICE SHOULD THE SHIP DESIGN CHANGE, TO AFTER-LAUNCH WARRANTY 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 BRONSWERK MARINE HVAC-R
5 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. MARINE HVAC-R ENGINEERING SKILLS 5 HIGHEST 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 BRONSWERK PROJECT ROADMAP 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 We create and build custom solutions to meet your special needs. 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.
6 MARINE HVAC-R TYPE OF HVAC SYSTEMS 6 CUSTOMIZED HVAC-R SOLUTIONS 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. 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. 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. 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.
7 Multiple systems for different environments and conditions. AIR AND WATER SYSTEMS DIRECT EXPANSION 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. 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. Cooling is accomplished by the direct expansion of a refrigerant in a cooling coil (DX system). 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. BRONSWERK MARINE HVAC-R
8 WORLDWIDE KNOW-HOW Canada United States Denmark Germany China Finland Korea Indonesia Netherlands Chile Turkey Spain United Kingdom Mexico France Belgium 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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