ASHRAE Journal - October 2013 - 99
Column RefRigeRation applications
Among the spin-off benefits of this change, it was noted to cope with the flammability of the refrigerant now being
that units are significantly quieter on starting than tradi- used, but the technology of the refrigerator did not change
tional R-12 and R-134a systems and the weight of refriger- dramatically, and in the eye of the householder there was
ant required is much less. The reduced noise is due to the no change at all. The fridge is installed and used in exactly
absorption of refrigerant in the oil when the compressor
the same way as it always was and there has been no disis not running, enabling a gentle start against lower pres- cernible change in product safety.
sure. The reduced charge is due to the low liquid denThis highlights a key difficulty when introducing
sity—the volume of liquid required is about the same but it hydrocarbons to an existing service organization. If a
weighs less. They are also very efficient, helping manufac- tech is being introduced to CO2 as refrigerant, he is naturally wary—the pressures are higher and the gear looks a
turers meet the stringent energy labeling requirements.
bit different. However, his regular habits
The labeling laws introduced in
The motto from the walls of the energy
in terms of service practice will stand him
Europe in the 1990s had a scale from G
efficiency office.
in good stead and not cause problems. On
(least efficient) to A (most efficient) but
the contrary, a hydrocarbon system looks
stepwise improvements in the requireand feels much like a normal HFC system
ments over the years have meant new,
but regular habits, such as sweating off an
more efficient bands have been added;
expansion valve, can cause major problems unless great
A+, then A++ and then (you’ve guessed it), A+++. Since
mid-2012 all models must be at least A+ efficiency; it’s a care is taken to ensure the refrigerant is well out of the
way. Propane has been adopted by a major UK supershame they didn’t start further back in the alphabet.
The transition from CFC to HC in the European refriger- market as its preferred solution for its display cases—for
ator market was quick and relatively simple because all the them the various benefits of cost, efficiency and reliability outweigh the challenges they have had to overcome to
hard stuff took place at the factory. Production lines had
to be retooled and in some cases completely reengineered take this road to environment-friendly refrigeration.
www.info.hotims.com/44637-19
ASHRAE Journal - October 2013
Table of Contents for the Digital Edition of ASHRAE Journal - October 2013
Contents
Commentary
Industry News
Letters
Meetings and Shows
Feature Articles
Sustainable Design of Water Source VRF
Economizer for Data Center
Total Dissolved Solids in Reclaimed Water
Hot, Humid Lab Hood Facility
Engineer's Notebook
Building Sciences
The Performance Gap
ASHRAE Honor Roll
ASHRAE Research Report
Technical vs. Process Commissioning: Basis of Design
Emerging Technologies
Data Centers
HVAC Applications
Energy Modeling
Refrigeration Applications
Products
Classified Advertising
Advertisers Index
ASHRAE Journal - October 2013 - Cover1
ASHRAE Journal - October 2013 - Cover2
ASHRAE Journal - October 2013 - 1
ASHRAE Journal - October 2013 - 2
ASHRAE Journal - October 2013 - Contents
ASHRAE Journal - October 2013 - Commentary
ASHRAE Journal - October 2013 - 5
ASHRAE Journal - October 2013 - Industry News
ASHRAE Journal - October 2013 - 7
ASHRAE Journal - October 2013 - 8
ASHRAE Journal - October 2013 - 9
ASHRAE Journal - October 2013 - Letters
ASHRAE Journal - October 2013 - 11
ASHRAE Journal - October 2013 - Meetings and Shows
ASHRAE Journal - October 2013 - 13
ASHRAE Journal - October 2013 - Sustainable Design of Water Source VRF
ASHRAE Journal - October 2013 - 15
ASHRAE Journal - October 2013 - 16
ASHRAE Journal - October 2013 - 17
ASHRAE Journal - October 2013 - 18
ASHRAE Journal - October 2013 - 19
ASHRAE Journal - October 2013 - Economizer for Data Center
ASHRAE Journal - October 2013 - 21
ASHRAE Journal - October 2013 - 22
ASHRAE Journal - October 2013 - 23
ASHRAE Journal - October 2013 - 24
ASHRAE Journal - October 2013 - 25
ASHRAE Journal - October 2013 - 26
ASHRAE Journal - October 2013 - 27
ASHRAE Journal - October 2013 - Total Dissolved Solids in Reclaimed Water
ASHRAE Journal - October 2013 - 29
ASHRAE Journal - October 2013 - 30
ASHRAE Journal - October 2013 - 31
ASHRAE Journal - October 2013 - 32
ASHRAE Journal - October 2013 - 33
ASHRAE Journal - October 2013 - 34
ASHRAE Journal - October 2013 - 35
ASHRAE Journal - October 2013 - 36
ASHRAE Journal - October 2013 - 37
ASHRAE Journal - October 2013 - 38
ASHRAE Journal - October 2013 - 39
ASHRAE Journal - October 2013 - Hot, Humid Lab Hood Facility
ASHRAE Journal - October 2013 - 41
ASHRAE Journal - October 2013 - 42
ASHRAE Journal - October 2013 - 43
ASHRAE Journal - October 2013 - 44
ASHRAE Journal - October 2013 - 45
ASHRAE Journal - October 2013 - 46
ASHRAE Journal - October 2013 - 47
ASHRAE Journal - October 2013 - Engineer's Notebook
ASHRAE Journal - October 2013 - 49
ASHRAE Journal - October 2013 - 50
ASHRAE Journal - October 2013 - 51
ASHRAE Journal - October 2013 - 52
ASHRAE Journal - October 2013 - 53
ASHRAE Journal - October 2013 - Building Sciences
ASHRAE Journal - October 2013 - 55
ASHRAE Journal - October 2013 - 56
ASHRAE Journal - October 2013 - 57
ASHRAE Journal - October 2013 - 58
ASHRAE Journal - October 2013 - 59
ASHRAE Journal - October 2013 - The Performance Gap
ASHRAE Journal - October 2013 - 61
ASHRAE Journal - October 2013 - 62
ASHRAE Journal - October 2013 - 63
ASHRAE Journal - October 2013 - 64
ASHRAE Journal - October 2013 - ASHRAE Honor Roll
ASHRAE Journal - October 2013 - HR 2
ASHRAE Journal - October 2013 - HR 3
ASHRAE Journal - October 2013 - HR 4
ASHRAE Journal - October 2013 - HR 5
ASHRAE Journal - October 2013 - HR 6
ASHRAE Journal - October 2013 - HR 7
ASHRAE Journal - October 2013 - HR 8
ASHRAE Journal - October 2013 - HR 9
ASHRAE Journal - October 2013 - HR 10
ASHRAE Journal - October 2013 - HR 11
ASHRAE Journal - October 2013 - HR 12
ASHRAE Journal - October 2013 - HR 13
ASHRAE Journal - October 2013 - HR 14
ASHRAE Journal - October 2013 - HR 15
ASHRAE Journal - October 2013 - HR 16
ASHRAE Journal - October 2013 - HR 17
ASHRAE Journal - October 2013 - HR 18
ASHRAE Journal - October 2013 - HR 19
ASHRAE Journal - October 2013 - HR 20
ASHRAE Journal - October 2013 - HR 21
ASHRAE Journal - October 2013 - HR 22
ASHRAE Journal - October 2013 - HR 23
ASHRAE Journal - October 2013 - HR 24
ASHRAE Journal - October 2013 - HR 25
ASHRAE Journal - October 2013 - HR 26
ASHRAE Journal - October 2013 - HR 27
ASHRAE Journal - October 2013 - HR 28
ASHRAE Journal - October 2013 - HR 29
ASHRAE Journal - October 2013 - HR 30
ASHRAE Journal - October 2013 - HR 31
ASHRAE Journal - October 2013 - HR 32
ASHRAE Journal - October 2013 - ASHRAE Research Report
ASHRAE Journal - October 2013 - 66
ASHRAE Journal - October 2013 - 67
ASHRAE Journal - October 2013 - 68
ASHRAE Journal - October 2013 - 69
ASHRAE Journal - October 2013 - 70
ASHRAE Journal - October 2013 - 71
ASHRAE Journal - October 2013 - 72
ASHRAE Journal - October 2013 - 73
ASHRAE Journal - October 2013 - 74
ASHRAE Journal - October 2013 - 75
ASHRAE Journal - October 2013 - Technical vs. Process Commissioning: Basis of Design
ASHRAE Journal - October 2013 - 77
ASHRAE Journal - October 2013 - 78
ASHRAE Journal - October 2013 - 79
ASHRAE Journal - October 2013 - 80
ASHRAE Journal - October 2013 - 81
ASHRAE Journal - October 2013 - Emerging Technologies
ASHRAE Journal - October 2013 - 83
ASHRAE Journal - October 2013 - 84
ASHRAE Journal - October 2013 - 85
ASHRAE Journal - October 2013 - 86
ASHRAE Journal - October 2013 - 87
ASHRAE Journal - October 2013 - Data Centers
ASHRAE Journal - October 2013 - 89
ASHRAE Journal - October 2013 - 90
ASHRAE Journal - October 2013 - 91
ASHRAE Journal - October 2013 - 92
ASHRAE Journal - October 2013 - 93
ASHRAE Journal - October 2013 - HVAC Applications
ASHRAE Journal - October 2013 - 95
ASHRAE Journal - October 2013 - Energy Modeling
ASHRAE Journal - October 2013 - 97
ASHRAE Journal - October 2013 - Refrigeration Applications
ASHRAE Journal - October 2013 - 99
ASHRAE Journal - October 2013 - Products
ASHRAE Journal - October 2013 - 101
ASHRAE Journal - October 2013 - 102
ASHRAE Journal - October 2013 - Classified Advertising
ASHRAE Journal - October 2013 - Advertisers Index
ASHRAE Journal - October 2013 - Cover3
ASHRAE Journal - October 2013 - Cover4
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