Colbourne, D;
Suen, KO;
(2021)
Hydrocarbon refrigerant charge limits for quiescent rooms.
International Journal of Refrigeration
, 125
pp. 75-83.
10.1016/j.ijrefrig.2021.01.006.
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Abstract
Concentration measurements and analysis have been used to develop new methodology for estimating the allowable charge limit (ACL) of flammable refrigerants, particularly R290. Attention has been given to the impacts of construction and dimensional characteristics of the RACHP enclosures, in particular the size and position of the openings, on the concentrations exiting the enclosure. Analysis of the data has shown that these are critical aspects that influence floor concentration and/or safe allowable refrigerant charge limits. Formulae have been proposed to estimate layer-volume heights and ultimately ACL. The results illustrate that current standard's ACLs are overly restrictive, especially for certain types of RACHP equipment.
| Type: | Article |
|---|---|
| Title: | Hydrocarbon refrigerant charge limits for quiescent rooms |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.ijrefrig.2021.01.006 |
| Publisher version: | http://dx.doi.org/10.1016/j.ijrefrig.2021.01.006 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Thermodynamics, Engineering, Mechanical, Engineering, Hydrocarbon refrigerant, flammable refrigerant, safety, allowable charge limits, R290, propane |
| UCL classification: | UCL 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/10127341 |
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