IRI Workshop - Hydrocarbon Refrigerants for Refrigeration Contractors

19 Nov 2019

Training workshop organised by the Institute of Refrigeration Ireland.

How to book

To reserve your place email info@instituteofrefrigerationireland.ie

Booking will be open to IRI members until Monday 11^th November and to all from 11^th November. Places will be assigned in order of date and time of reservation request. (The IRI may apply a limit to the number of attendees from any one company)

Fee is €50 for IRI members and €95 for non members.

Date and Venue

Tuesday 19 November from 9.30 to 4.30 p.m. (sharp)

Clayton Hotel, Liffey Valley, Dublin. https://www.claytonhotelliffeyvalley.com/

Overview

Hydrocarbon refrigerants offer an efficient and low GWP alternative to HFCs in retail, commercial and industrial refrigeration. Hydrocarbon refrigerants are already in widespread use in domestic and retail refrigeration in Ireland, and also in commercial and industrial chillers. With the recent increase in allowable charge from 150 to 500g in commercial cabinets, the scope has expanded for even wider use.

The workshop is intended for those involved in the supply, installation and maintenance of refrigeration equipment using hydrocarbon refrigerants.

The workshop will cover;

Why hydrocarbons are such good refrigerants and which hydrocarbons should be used
What the standards say about maximum charge
How to determine or increase the allowable charge
What future standards might say regarding use of hydrocarbons
Developing Risk Assessments and dealing with the hazards of refrigerants

The Trainer:

Daniel Colbourne is a global specialist in the use and application of hydrocarbon refrigerants.

Based in England, Daniel sits on the working groups for a number of EN and ISO standards including EN 378 and ISO 60335.

He is a member of the UNEP Refrigeration Technical Options Committee (RTOC) for the Montreal Protocol and represents GIZ Proklima. He has delivered presentations for the IRI in 2016 and 2018.

Programme

Introduction to hydrocarbons for refrigeration.

What hydrocarbons are
Why they are used as refrigerants
The most common hydrocarbons used in refrigeration systems today
What types of equipment are using hydrocarbon refrigerants at present

What the current EN 378 says about Practical Limit for refrigerants

Where to find the relevant tables from EN 378 – 2016
Two calculations, one for toxicity and one for flammability

Determining the Practical Limit for the hydrocarbon charge for a refrigeration system

How to use the EN 378 tables to calculate the maximum allowed charge of refrigerant
Sample calculations for real systems

Proposed changes are for the next amendment or revision of EN 378

What revisions are proposed to facilitate the safe increased use of hydrocarbons in refrigeration
Sample equations currently being discussed in the EN 378 Working Group
Use of Additional Measures to allow increased refrigerant charge

EN 60335 – Particular Requirements for Commercial Refrigerating Appliances

The recent increase in allowable charge from 150 to 500g – what this means for suppliers and installers

Hydrocarbon Refrigerant Leaks:

How hydrocarbons behave when they leak from a refrigeration system
Modelling how refrigerants mix with air in a room
Leak hole size for modelling of leaks
Upper and lower flammability limits – what they mean
How easy or difficult is it for hydrocarbons to ignite

Risk Assessments for hydrocarbon refrigerants

Practical information relating to Risk Assessments for hydrocarbons
The principal hazards of hydrocarbon refrigerants
How to determine the risk from the flammability of hydrocarbons
The need for a site-specific assessment where multiple systems are installed on one site (e.g. a retail store)

Sources of Further Information: