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National Ozone Unit, Carenage, St. George’s Grenada. May 19th, 2019. The National Ozone Unit (NOU) was the host of a special meeting with the GIZ to discuss matters relevant to  two projects that the NOU and GIZ are partnering on; the Cool Contributions fighting Climate Change (C4)  and the Sustainable Phase Out of Ozone Depleting Substances (SPODS) projects.

20190520_122525-1The team from the GIZ that met with the National Ozone Officer, Mr. Leslie Smith included GIZ Technical Advisor, Ms. Marion Geiss and Technical Consultant on the C4 project, Mr. Curllan Bhola.

The objective of the meeting was to evaluate the progress made, review and update the work plans for both projects and to discuss new initiatives. Among the many issues discussed under the C4 project included, the RAC national inventory report, the AC pilot project on natural refrigerants, Cool Training and the national cooling strategy.  With regards to the SPODs project, discussions were held on the ODS banks inventory, a strategy for disposal and a communications strategy for the NOU. The meeting also discussed an AC case study at the Belmont Estate Chocolate Factory.

May 10th, 2019, St. George’s, Grenada:  The National Ozone Unit (NOU) of Grenada continues to intensify  its approach  in ensuring that the capacity of refrigeration and air conditioning technicians on the island is enhanced to handle flammable refrigerants – hydrocarbons.  The use of hydrocarbons in the refrigeration and air conditioning sector is increasing rapidly in Grenada, particularly in domestic and small commercial refrigeration and unitary/split air-conditioning systems.  Hydrocarbon refrigerants (R-600a, R-290 and R-1270) have been identified as a suitable replacement for the high global warming flourinated gases (HFCs). These natural refrigerants have zero ozone depleting potential (ODP), negligible global warming potential (<3) and are very energy efficient.  However, they have a safety classification as A3, meaning that they are non-toxic and flammable.  Therefore it is extremely important that RAC technicians are trained in the safe installation, servicing and maintenance practices when handling these refrigerants.

20190509_094432.jpgThe National Ozone Unit in collaboration with the United Nations Industrial Development Organisation (UNIDO) organized a two-day training on Wednesday May 8th to Thursday May 9th, 2019 at the T A Marryshow Community College, St. George’s, Grenada for RAc technicians.  This training was geared for RAC technicians with at least three years’ experience in the field. The focus of the training was on the safe handling of flammable refrigerants. Day one of the training covered the theoretical aspects and day two was used for practical sessions. Several local technicians, workshops and companies were invited to participate in the training. Over the two days a total of 32 technicians including 28 males and 4 females participated. Over 60% RAC technicians in Grenada have received some level of training in hydrocarbon refrigerant technology.

Two (2) local RAC trainers and the National Ozone Officer were used to conduct the training. Some of the major topics covered in the training included:

  • Properties of hydrocarbons
  • Risk assessment
  • Legislation, policy and standards
  • Fire and electrical safety
  • Charge limitation and room size calculations
  • Personal protective equipment and specialize tools and equipment required for installation and servicing
  • Leak detection
  • Installation, servicing and maintenance practices
  • Brazing and pipe connections

20190509_123109.jpgDuring the practical training, the participants were required to demonstrate their competencies in brazing, flare joint connections, leak and pressure testing, evacuation, venting and charging of refrigerants.

During the evaluation participants were asked to give their overall rating of the training. Out of 27 respondents, 18 viewed the training as been excellent, 8 as very good and 1 as good.

At the end of the training, certificates of participation were presented by the Chief Planning Officer in the Ministry of Infrastructure Development, Public Utilities, Energy, Transport and Implementation to all participants.


Participants at the training

Last Friday, the first Natural Refrigerant air-conditioning system was installed in Grenada on commercial basis by Grenz Concept. The recently establish business seized the opportunity to fulfil the need for highly efficient, climate friendly air conditioning systems in Grenada and the region.

The first environmental issue with the cooling sector was its impact on the ozone layer through the use of halocarbon refrigerants (chlorofluorocarbons (CFCs), HCFCs). Now most of these units are phased out but they were replaced by others using Hydrofluorocarbon (HFC), which do not affect the ozone layer but have a greenhouse gas potential or sometime over 14,000 time that of Carbon Dioxide. Cooling devices are also using a lot of energy (estimated to 40% of Grenada’s energy bill by Grenlec). This, coupled with a world-wide increase in cooling product demand, has a tremendous impact on global warming.

In a drive to reduce global warming from human activities, the cooling sector developed cooling products (air-conditioning, fridges, freezers, etc.) that are more energy efficient and use “natural refrigerants” such as propane (R290) which has both low ozone depletion and greenhouse gas potential.

Kelly Cyrus, managing director of Grenz Concept said: “Currently we have a stock of the most energy efficient and environmentally friendly air conditioning systems for sale in Grenada. Our units are 40% more energy efficient than the air conditioning systems using R22 as refrigerant. This means that by changing to the R290 systems, you can cut you energy usage almost by half. Our R290 systems running at an optimal temperature of 25 degrees Celsius only use an amperage of 2.9 amps.  This figure shows the efficiency of our systems. Based on your energy savings the payback time for a R290 12000 BTU system is approximately 14 months. Other features of the units is that they are very quiet and that the compressors are gold Nano quoted to prevent the rusting.”

Mrs. Henry, who benefited of the first installation by the company on Friday said: “I am extremely pleased with the unit. It is powerful and yet very quiet. The room cools down within a couple of minutes. I run it at 25° and it is an ideal temperature for my baby daughter’s bedroom. It also makes me feel good to think that I am not destroying the future world for my daughter by trying to keep her cool at night.”

Until recently, Natural Refrigerant air-conditioning system were not imported to Grenada due to the lack of regulations for installation and maintenance of these units. However, the National Ozone Unit with the support of the C4 global project paved the way to enable Grenada to import these units through implementing technician trainings, developing standards and the installation of 30 units under a pilot projects to test their efficiency.

Grenz Concept took advantage of this opportunity to position itself as a market leaders. Grenz Concept’s installation team has more than 20 years in the RAC sector in Grenada and are trained in the installation and the servicing of the R290 systems.


May 2019

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