74
and R-410A. The testing will be done at T1, T2, and T3 conditions (the latter covering high ambient
conditions) and will be carried out at one testing lab in Egypt.
Table E.3 Comparison of four research projects: PRAHA, EGYPRA, ORNL, and AREP-II
13
13
Source: TEAP report XXVII/4
AREP-II
1 Type of test
Soft optimization or drop in of
individual units tested against a
base R-410A unit
2
No. of
prototypes
22 units from different OEMs
ranging from splits to water chillers
60Hz
Window Mini Split Ducted Packaged Mini Split Mini Split Mini Split Central Split unit Split unit
18 MBH 24 MBH 36 MBH 90 MBH 12 MBH 18 MBH 24 MBH 120 MBH 18 MBH R22 eq. 18 MBH R-410a eq.
4
Testing
conditions
ANSI/AHRI 210/240, at T1, T3, and
125 °F
5
Prototypes
supplied and
Individual suppliers, testing at own
premises
8 Constraints
- Drop-in;
- soft optimization by advjusting
expansion device, adjusting charge
amount, and changing type of oil;
- One case of compressor speed
adjustment using variable speed
drives
9
Other
components
N/A
Program PRAHA EGYPRA
Custom built test prototypes, comparing
with base units: HCFC-22 and R-410A
Custom built test prototypes, comparing
with base units: HCFC-22 and R-410A
3
No. of
categories
60 Hz 50 Hz 50 Hz
6
Refrigerants
tested
Eq. to HCFC-22: HC-290, R-444B (L-20), DR-3
Eq. to R-410A: HFC-32, R-447A (L-41-1), R-
454B (DR-5A)
Eq. to HCFC-22: HC-290, R-444B (L-20), DR-
3, R-457A (ARM-32d)
Eq. to R-410A: HFC-32, R-447A (L-41-1), R-
454B (DR-5A), ARM-71d
7
Expected
delivery dates
Testing completed end of 2015
Final report end March 2016
End of 2016
ORNL – Phase I (Mini-split AC)
Soft optimization tests, comparing
with base units: HCFC-22 and R-410A
2 commercially available units, soft
modified to compare with base
refrigerants: HCFC-22 and R-410a
60 Hz
To build new prototypes with dedicated
compressors for the selected refrigerants
fitting in the same box dimensions as the
original design and comparing
performance and efficiency to base
models with HCFC-22 and R-410A units
To build new prototype with dedicated
compressors for the selected refrigerants
with the condition to meet same design
capacities of the selected models in
comparison to the HCFC-22 and R-410A
units
Prototypes built at six OEMs, test at
Intertek
Prototypes built at eight OEMs, test at
NREA (local test laboratory in Egypt)
ANSI/AHRI Standard 210/240 and ISO 5151
at T1, T3 and T3+ (50°C) and a continuity
EOS 4814 and 3795 (ISO 5151) T1, T2, and T3
conditions
13 prototypes, each specific capacity and
refrigerant built by one or two OEMs,
compared with base refrigerants: HCFC-22
and R-410A. Total prototype and base
units = 22
28 prototypes, each specific one capacity
and one refrigerant built by one OEM,
compared with base refrigerants: HCFC-22
and R-410A. Total prototype and base
units = 37
Final Report October 2015
To change some components of the
two prototypes to accommodate the
different refrigerants, within a “soft
optimisation” process
The project includes other non-testing
elements to assess relevant issues of
energy efficiency (EE) standards,
technology transfer and economics in
addition to special reporting on the
potential of District Cooling to reduce the
use of high-GWP alternatives
N/A
34 MBH chiller, 2x 36 MBH split, 48
MBH packaged, 60 MBH packaged, 72
MBH packaged
Eq. to R-410A: HFC-32, DR-5A, DR-55,
L-41-1, L-41-2, ARM-71a, HPR2A
Final report Oct 2015
N/A
ANSI/AHRI Standard 210/240 and ISO
5153 T3 (2010) condition
ORNL, one supplier – soft
optimization in situ
Eq. to HCFC-22:N-20B, DR-3, ARM-
20B, R-444B (L-20A), HC-290
Eq. to R-410A: HFC-32, R-447A (L-41-
1), DR-55, ARM-71d, HPR-2A