Giovanni Barletta
Carrera 58 No. 99-46 Apto 1604
Barranquilla, Colombia
Region: XII
Honorarium: None

Giovanni has spent his last 38 years working in the air conditioning and refrigeration sector, in contact with important players in the sector as the local OEM, Universities, Contractors, Colombian government and multilateral entities.

Giovanni received his undergraduate degree in Mechanical Engineering from the Universidad del Norte in Barranquilla. He also received a Master degree of Business Administration. During many years he has participated in many training courses with emphasis in air conditioning and refrigeration at important worldwide OEM. Many of these were focused in natural refrigerant, new technologies and field service deep training.

Giovanni has served as Director of the Colombia Central bank in the “Buildings and Constructions Regional Department” for 7 years, leading important projects for the construction of highly and complex buildings, with emphasis in maintenance and installation of the entire HVAC system.

He was a Chief Engineer of the third largest supermarket chain in Colombia, responsible for the entire refrigeration system of supermarkets and distribution centers.

Giovanni was also Technical Manager, Director of Engineering and of Serviparamo, the largest air conditioning contracting company in Colombia for +10 years. Participating in important hotel projects, shopping centers and high capacity industrial plants.

Giovanni is currently the Technical Manager of Emerson Comercial and Residential Solution for the Andean, Caribbean and Central America region. In this company he gives Technical support to new applications for local OEM , supermarkets, and at the time designing and leading technical training programs.

Giovanni has been an active member of ACAIRE, the Colombian air conditioning and refrigeration association for the last 38 years. Being president the last 4 years. During his tenure, ACAIRE have been held technical congresses, exhibitions, courses and trainings for more than 5000 people per year. He has been speaker for 16 consecutive years at the REFRIAMERICAS event. (Colombia, Panama, Miami). And other International seminars in Peru, Venezuela, Costa Rica, Dominican Republic among others. He has worked with the Ministry of Energy of Colombia for the development of the regulation of thermal installations in buildings. (RETSIT). He is a member of the directive committee of thermal districts in Colombia.

Giovanni has been professor for more than 20 years at different Universities in Colombia in the areas of air conditioning, refrigeration and energy efficiency. He has been director of degree projects and research projects with an emphasis on energy analysis of solutions for refrigeration and Air Conditioning. He also had the opportunity to be a consultant to different national associations, such as UTO (Technical Ozone Unit) and international associations such as GYZ, UN. He has also been an advisor and consultant for supermarket chains and other end users.

Giovanni has published numerous technical papers and presented his work at a variety of national and international conferences. His publications include technical papers on: Evaluation of different architecture alternatives in commercial refrigeration and their impact in energy efficiency, analysis of the variables that have an impact on the refrigeration system and on the life cycle unit, good practice in service of maintenance and installation in refrigeration system, analysis of the energy efficiency of architecture of subcritical and transcritical refrigeration systems.

Available in Spanish
Commercial Refrigeration systems have changed a lot in recent years, mainly due to the new challenges and regulations in refrigerants such in the demanding expectations of energy consumption. Within all this accumulation of requirements, many options arise, that involve technology in compressors, electronics, and the store layout is being designed. The traditional systems of centralized machine rooms are tending to disappear. Options for units or equipment are emerging closer to the refrigeration loads and all this will have an impact on the sales room, civil, electrical, hydraulic works, and other. Many variables here are evaluated in the moment of take a decision. One of them are associated with CAPEX: Investment cost, installation cost, Cost of the refrigerant and cost of complementary works (electrical connections, structure and others to OPEX, maintenance costs, energy consumed. And within all this, the environmental impact is almost always seen from the perspective of the GWP of the refrigerant and other variables are unknown, such as the amount of this in the system and the portion that can theoretically leak in a year. Considering the above and in order to measure the real environmental impact of the solution, it is convenient to evaluate the TEWI of each solution. This analysis compares 12 configurations with different refrigerants in different architectures and how its carbon footprint can be quantified, expressed in Ton of C02 emitted into the environment. This includes subcritical, transcritical, booster systems and some low GWP refrigerants such as HFOs. The methodology allows the assistant to know all the variables that generate an impact on the carbon footprint and climate change
Available in Spanish
Refrigeration and air conditioning systems have traditionally been adjusted, in the field or in the factory by variables such as suction and discharge pressures. And also by the amperage consumed by the compressor and in other cases by the amount of refrigerant, which the equipment is designed to work in the most optimal way. However, in many cases that refrigerant charge must be adjusted in the field and in other cases a diagnosis must be made for a fault condition or abnormal condition in the system. That is the reason why it is important to know that not only the pressure and the amperage are enough, but also the importance to apply simple calculations using PT tables, software and interrelate all these variables to be able to conclude with accuracy. Not only if the equipment is at the optimum refrigerant charge point, but also doing many diagnostics and being able to anticipate premature system failure. In many cases, the perspective is also lost that many of these variables are directly related to the efficiency of the system, their cooling capacity and impact on the carbon footprint. This talk includes an analysis of these variables, how they are impacting efficiency and how they are all integrated in the case of a failure analysis, which are shown with simple examples and clarifying some myths that have been beliefs for years among technicians and installers.
Available in Spanish
Given the difficult situation worldwide corresponding to the depletion of the ozone layer due to the issuance of ODS, concerted efforts have been made for the sustainable and climate-friendly phaseout of these substances for several years ago. Additionally, some of these gases are being replaced by others that generates impacts on climate change. One of the main efforts is the prevention and control of leaks. This talk shows important information corresponding to good practices for the successful achievement of this objective. The direct environmental impact of releasing refrigerant into the atmosphere has been mentioned a lot, but in addition, it is crucial to understand that any HVAC system with a shortage of refrigerant also reduces its efficiency. This fact will lead to higher energy consumption and operating cost, and higher CO2 emissions (with a double effect on the environment). A system with continuous leaks always represents recurring calls for service (maintenance), which represents additional costs and in the worst case, a system stoppage if the compressor burns out. On average, about two-thirds of greenhouse gas (GHG) emissions are caused by energy consumption. Increasing the energy efficiency of RAC systems and reducing overall cooling needs not only save money for the consumer or operator, they also reduce the need for additional investments in energy infrastructure, which can be a huge financial burden for countries. Developing. All this forces make us think that the issue of leak control is not simple or negligible, on the contrary, it requires a methodology that, as it is more technical, delivers better results than without measurable in g / year of leaks from a system. From soap suds testing to the most sophisticated helium detector, it should be understood that there is a method and expected level of leakage in every system. Likewise, each instrument and each test is specific to a system or its manufacturing or installation process. That is why the relevance of this issue that for years has been considered less important, today it is part of all international agreements.