consumption. In the European scenario, the use of continuous run for frozen product hardly happens; it can occur if an end-user accidentally sets it or the setting is
demanded by a customer. Curtains are optional and they are not always used by
end-users. The use (or not) of curtains is not included in the European average
scenario.
Table 3 Specific scenario from experimental data depending on parameters and energy
consumption results (from experimental measures by Carrier Transicold)
#
Setting
point (°C)
Operating
mode
On/off
during door
openings
Use of curtains
for door
openings
Energy
consumption
a
Mean [l/h]
Standard
deviation
b
1
0
Continuous
0.58
0.09
2
0
Start/stop
0.18
0.06
3
0
Continuous On
No
0.56
0.19
4
0
Continuous Off
No
0.55
0.11
5
0
Continuous Off
Yes
0.54
0.03
6
−20
Start/stop
0.69
0.52
7
−20
Continuous
0.78
0.18
8
−20
Start/stop
On
No
0.96
0.62
9
−20
Start/stop
Off
No
0.90
0.15
10 −20
Start/stop
Off
Yes
0.71
0.42
11 −25
Start/stop
1.10
0.09
a Because of confidentiality reasons, raw energy consumption data cannot be disclosed. Instead we
calculated the energy consumption for each scenario as follows: (specific scenario raw energy
consumption/European usage scenario raw value)
b
Standard deviation is calculated for discrete random variables
Fig. 2 Energy consumption for 1500 h of use of the TRU depending on the scenario of use (from
experimental data by Carrier Transicold)
Is It Useful to Improve Modelling of Usage Scenarios …
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