View
4
Download
0
Category
Preview:
Citation preview
ASERCOM Annual Meeting Standards
Heinz Jürgensen
Convenor Work Group Standards
Brussels, 2016-01-14
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 2
Contents
EN Compressor standards
EN Condensing Units standards
ISO Compressor Performance Rating
EN Refrigeration System Safety
AHRI / ASERCOM joint working group
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 3
EN 13771-1 Compressor performance testing
Compressors and condensing units for refrigeration
– Performance testing and test methods
– Part 1: Refrigerant compressors
Changes in draft standard
Transcritical operation for e.g. CO2
– Nomenclature: liquid fluid
– Diagrams
2-stage / economized compressor
Formula and symbols revision
Conditions for cyclic capacity control
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 4
EN 13771-1 Compressor performance testing
Standard 1 stage 2-stage / economized
m2
m1
m2
m1
m7
m2 = m1 m2 = m1 + m7
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 5
EN 13771-1 Compressor performance testing
Diagrams example calorimeters
compressor expansion
device 7
1
2 tcal7
5
a) Circuit diagram
7 calorimeter 7
heater 7
6.7
6.1 Calorimeter 1
heater 1 expansion
device 1
tcal1
condenser / gas cooler
1
2 f2
5
6.1
h
p
h5 h6.1
6.7
h6.7
7
h1 hf2
f7
hf7
h
1
2 f2
5
6.1
p
h5 h6.1
6.7
h6.7
7
h1 hf2
f7
hf7
transcritical test condition
Figure 3.2 - Dry system refrigerant calorimeter, compressor with intermediate pressure inlet
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 6
EN 13771-1 Compressor performance testing
Diagrams example economized
1
2
f2
5
6
h
p
h5 h6
7
h1 hf2
compressor
1
2
a) circuit diagram
for factory
assembled
economiser HX
7 Economiser HX
6 Calorimeter
heater expansion
device 1
5
tcal
condenser / gas cooler
1
2 f2
6
h
p
h6
7
h1 hf2
transcritical test condition
hf7
f7
hf7
f7
9
9
10
9
5
h9
h5 h9
Figure 3.3 - Dry system refrigerant calorimeters, compressor with intermediate pressure inlet
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 7
EN 13771-1 Compressor performance testing
Stationary conditions during test
Test ≥ 15 min
Logging pitch ≤ 1 min
3 possibilities
All readings in tolerance band (table)
More readings increased chance for exceeding
Statistical approach
Min tolerance value ≤ x-2 s , x+2 s ≤ Max tolerance value
More readings give benefits
Cyclic Capacity Control
Min 15 readings per control cycle
Min 10 cycles
All Average values per cycle in tolerance band
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 8
EN 13771-1 Compressor performance testing
Other topics
Correction to basic test conditions for 2-stage/eco of
Capacity Q
Power absorbed P
Assuming constant isentropic efficiency ηi
Correction calculation Annex for
Intermediate port pressure p7
To compensate for subcooling in case of fixed eco HX
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 9
EN 13771-1 Compressor performance testing
EN 13771-1 :2015
Comments from voting procedure processed
on June meeting
– Unfortunately took most of meeting
Revised Draft given to main committee
CEN TC 113 for formal voting
– After some formality feedback of secretary
– Send 28.08.2015
– Voting until End January 2016
New base for compressor performance certification by ASERCOM
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 10
EN 13215 Condensing units performance rating
Condensing units for refrigeration
- Rating conditions, tolerances and
presentation of manufacturer's performance data
EU Mandate M/495 acc to ErP Directive
Additional rating points
– At tamb 32, 25, 15, 5 °C
SEPR calculation
– Annex A with formula, ambient temp bins, …
» Acc to working doc from JIEG
Tolerances part load and SEPR
Economized compressors in CUs
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 11
EN 13215 Condensing units performance rating
Basic data for CU SEPR calculation MT (-10 °C)
0
50
100
150
200
250
300
350
400
450
0
0,2
0,4
0,6
0,8
1
1,2
-19 -16 -13 -10 -7 -4 -1 2 5 8 11 14 17 20 23 26 29 32 35 38
Dura
tion p
er
bin
in h
ours
De
ma
nd
an
d c
ap
acity r
atio
Ambient temperature in °C
bin hours
Demand
Capacity*
Test data
*) w/o capacity control
A B
C D
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 12
EN 13215 Condensing units performance rating
Table 5 — Actual performance in relation to published data
Condensing unit
applications
Tolerance
Low evaporating
temperature
Medium
evaporating temperature
High
evaporating temperature
Part load
condition
Household and
similar refrigerators/
freezers
Refrigerating capacity
a
or mass flow
90,0 % b
or 87,5 %
90,0 % 92,5 % 87,5 % 92,5 %
or -10 W c
Power absorbed a
112,5 % 110,0 % 107,5 % 112,5 % 107,5 %
or +10 W c
a In any case the COPr shall not be less than 90 %.
b The 90,0 % tolerance applies for 32 °C ambient temperature.
c Maximum deviation for values less than 100 W.
The SEPR calculated according to Annex A shall not be less than 90 % of the manufacturer's published data.
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 13
EN 13215 Condensing units performance rating
EN 13215:2015 Draft given to main committee
CEN TC 113 for evaluation on voting
Comments worked through
– Meeting CEN TC 113 WG 6 04.+05.11.2015
– New Annex ZA with reference to Commission Regulation 1095/2015
– New draft for final voting delivered to CEN TC 113
New base for condensing units performance certification by ASERCOM
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 14
EN 13771-2 Condensing units performance testing
Compressors and condensing units for refrigeration
– Performance testing and test methods
– Part 2: Condensing units
Economized/2-stage
Carbon dioxide CO2 transcritical
Transfer formula and symbols from part 1
Define air side for testing more specific
– Main topic TC 113 WG 6 meeting 04.+05.11.2015
Text and formula revision drafted
Main CEN / TC 113 / WG 6 task for 2015
– Finalization of first draft for voting on next meeting April 2016
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 15
EN 13771-2 Condensing units performance testing
Test setup definition
Sensor location definitions
– EN 327 testing of air cooled refrigerant condensers
Room size and air flow definition
– EN 14511-3 testing of heat pump/AC outdoor units
Operational descriptions for CUs
– Subcooling, temperature deviations, …
Other revision parts from EN 13771-1 compressor testing
Strongly revised test uncertainty description
Definitions on power absorbed
– inverter driven compressors
– Open type compressors
New result evaluation (incl statistics and cyclic capacity control)
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 16
ISO TC 86 WG 4 Compressor Performance
ISO 9309:1989 Refrigerant compressors – Presentation of
performance data outdated
New work item (WI) proposal
Rating conditions and performance tolerances for positive displacement CO2
compressors
– Submitted by CN national committee
– Based on AHRI 570
» Only CO2-compressors
» Refers to outdated ISO 9309
» Voted NO
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 17
Status ISO TC 86 WG 4 Compressor Performance
ISO 9309:1989 Refrigerant compressors – Presentation of
performance data outdated
New work item proposal
Revision of ISO 9309:1989
– Complete update, incl CO2
– Submitted by DE national committee
– Based on EN 12900:2013
» Most modern reference
– Voting was positive
Withdrawn 04 2015 by German committee
» Because of political disturbances
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 18
Status ISO TC 86 WG 4 Compressor Performance
ISO 9309:1989 Refrigerant compressors – Presentation of
performance data outdated
ISO 917:1989 Testing of refrigerant compressors outdated
Withdrawn April 2015 by TC 86
– Decision of summer 2014
TC 86 WG 4
– No active standards
– No work items
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 19
EN 378 alignment ISO 5149:2014
Refrigerating systems and heat pumps
– Safety and environmental requirements
In CEN / TC 182
Incorporation of new A2L and B2L lower flammability class
Refrigerants of the future
– Necessary for phase out of F-Gases with high global warming
Focus on safety
ca 1500 comments on 1. draft collected
– All sorted / priority evaluated
– Selected majority worked on
Harmonization with PED
New draft circulated
New standard expected 2016
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 20
EN 12693 revision
Refrigerating systems and heat pumps
– Safety and environmental requirements
– Positive displacement refrigerant compressors
In CEN / TC 182
Minor changes requested
Alignment with other revised standards
Incorporation of rules for inverters in safety testing
HJ volunteered for responsible WG
Waiting for the EN 378 revision
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 21
ISO TC 86 Refrigeration systems
New work item (WI) proposal discussed
Refrigerating systems and heat pumps – Tightness of components
– Submitted as ISO 14903
– Based on EN 16084
» Not mandated, but risk for appearing in tenders
» Compressors not in scope (at this stage of draft)
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 22
ISO TC 86 Refrigeration systems
New work item (WI) proposal discussed
Refrigerating systems and heat pumps – competence of personnel
– To be submitted by German national committee DIN
– Based on EN 13313
» Originally developed to cover first F-Gas Regulation demands
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 23
DIN NA 044-00-14 AA Refrigeration compressors
Revision of standard
DIN 8976:1972 - Testing of Refrigerating systems
– Similar to ISO R 816:1968
– Testing of performance in installed systems
» Differing from lab testing
» Operating conditions
» Stability, …
» Accessibility for sensors
» Measuring point for pressure
» Placing of temperature sensors
» Uncertainties
– Drafting started
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 24
AHRI - ASERCOM Uncertainties Workgroup
Joint work group AHRI and ASERCOM
Develop white paper on uncertainties
– Compressor testing
» Statistical and non-statistical parts
» Inter- and intra-lab
» Testing procedure deviation allowances
– Performance declaration
» Production variation
» Random testing uncertainties
– Common understanding of
» Concept
» Terms
– Good base for political stakeholder discussions
ASERCOM Annual Convention, 14.1.2016, Heinz Jürgensen, 25
AHRI - ASERCOM Uncertainties Workgroup
Joint work group members ASERCOM
Julian Pfaffl CC
Heinz Jürgensen Standards WG
Shared chairmanship
Amit Vaidya AHRI / Carrier
Heinz Jürgensen ASERCOM / BITZER
Basic calculation tool
ASERCOM uncertainty tool from ILK Statistical and non-statistical parts
ILK Report shared with AHRI members of this WG
AHRI report shared
First parts of draft white paper sections
Recommended