Environmentally Friendly Heating and Refrigeration Design
Refrigeration consulting engineers serving clients worldwide
Our services
Heating & Cooling …… System and Equipment Design
BVN Engineering can assist you with the design of heating and cooling systems, and machines that make use of the natural refrigerants ammonia (R717), carbon dioxide (R744), propane (R290), propylene (R1270), iso-butane (R600a), air (R729), and water (R718). Low charge direct expansion ammonia systems offer customers safe, environmentally friendly, high-efficiency heat pump and refrigeration system design.
CO2 (carbon dioxide) has become increasingly popular as a refrigerant in transcritical refrigeration systems, subcritical cascade refrigeration systems, and in heat pumps due mainly to its unregulated status. CO2 is low-cost, environmentally friendly, non-toxic, and non-flammable.
The hydrocarbons, such as propane, propylene, and iso-butane make excellent refrigerants for all types of refrigeration and heat pump systems. Flammability of the hydrocarbons is obviously a safety concern, however, in small, packaged machines with low charge levels, they offer safe, low-cost, energy-efficient solutions. Operating pressures and energy efficiency for the hydrocarbons are similar, or better, compared to the synthetic halocarbon (HCFC, HFC) refrigerants. This, in addition to good compatibility with the materials used in common commercial air-conditioning and refrigeration systems, makes hydrocarbon refrigerants an attractive low-first-cost solution.
The engineers at BVN Engineering can help you evaluate how best to apply natural refrigerants to achieve the environmentally-friendly, safe, energy-efficient solutions you want to achieve.
Specialized Heat Exchanger Design and Analysis
Different natural refrigerants exhibit quite different behavior in heat exchangers. BVN Engineering can help you with proper design and performance predictions for various types of heat exchangers using these special working fluids. Contact us for any heat exchanger design need worldwide.
Single-phase heat transfer and fluid flow, boiling heat transfer and fluid flow in evaporators, as well as condensing heat transfer and fluid flow in condensers, are all areas of experience and expertise that can be applied to properly designing and specifying heat exchangers for your heating and cooling systems.
Recommendations for materials of construction that are appropriate for the working fluid, as well as for the operating environment to avoid metal loss due to corrosion is also an area we can help you with. Heat pipe heat exchangers can be used very successfully to solve specific heat transfer problems in a way that is space efficient and effective. Natural refrigerants, particularly ammonia, carbon dioxide, and water can be used very effectively in heat pipes for air-to-air heat recovery in medium to high-temperature applications.
Supercritical CO2 gas cooling presents a number of interesting design challenges that we can help you solve. Whether cooling the supercritical CO2 gas with air, water, or another fluid, we can assist with the design and performance modeling of these special heat exchangers.
Education & Training
Training is essential when working with natural refrigerants, and is an important part of the service we offer. Our CEO is recognized worldwide as a speaker and educator on the subject, and is helping train the next generation of engineers.
We can help train your engineering staff to develop expertise in a number of different areas related to refrigeration and heat pumps using natural refrigerants; Theory, Design, Safety, and Compliance. In-person training is always the most effective means of communication and education. It has been shown that the most effective training and retention of presented material occurs when three steps are taken:
1. Proper preparation of course materials combined with providing course content to students ahead of the training event. Most students will take the time to familiarize themselves with the training material before arriving at the event.
2. In-person face-to-face training is known to result in the best training outcome for students. The ability to interact, ask questions, read facial expressions and body language, etc., are all important!
3. Follow up with students to support the application and correct use of the material after the training event maximizing understanding and retention of the material covered.
Please don’t hesitate to contact us if you need help building your engineering skill sets with natural refrigerants.
“I have worked with Bruce for over 20 years and he has been a great help in establishing our US business for low-charge ammonia systems. His expertise in heat transfer for evaporators and condensers is exceptional and he has a wealth of experience with all-natural refrigerants.”
— DR. ANDY PEARSON, GROUP MANAGING DIRECTOR, STAR REFRIGERATION, GLASGLOW, SCOTLAND
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SERVING CLIENTS WORLDWIDE