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Assessment of factors affecting R290 concentrations arising from leaks in room air conditioners.

Colbourne, D; Suen, KO; (2018) Assessment of factors affecting R290 concentrations arising from leaks in room air conditioners. In: 13th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). (pp. pp. 25-35). IIR: Valencia, Spain. Green open access

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Abstract

Currently R290 is used to a small extent in room air conditioners, such as split, portable and window types. Products are limited to relatively small cooling capacities due to refrigerant charge sizes being constrained to around 300 – 400 g, on account of maximum charge formulae within standards IEC 60335-2-40, ISO 5149-1 and EN 378-1. This is especially challenging in warm countries where the cooling load is greater and charge sizes need to be larger. Work is underway to improve maximum charge size determination methods for a given room size. As a contribution to this on going process, further research has been carried out to understand the factors that affect development of flammable concentrations within roomsin event of a leak. Parameters related to the characteristics of room air conditioners and installations have been investigated experimentally by measuring R290 concentrations from releases and selected findings are described.

Type: Proceedings paper
Title: Assessment of factors affecting R290 concentrations arising from leaks in room air conditioners.
Event: 13th IIR Gustav Lorentzen Conference on Natural Refrigerants
Location: Valencia, SPAIN
Dates: 18 June 2018 - 20 June 2018
Open access status: An open access version is available from UCL Discovery
DOI: 10.18462/iir.gl.2018.1103
Publisher version: http://dx.doi.org/110.18462/iir.gl.2018.1103
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Hydrocarbon refrigerant, R290, flammable, leakage, concentration, safety standards, air conditioner
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10107061
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