asercom annual meeting standardsasercom.org/.../files/asercom_annual_convention... · asercom...

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


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



Standard 1 stage 2-stage / economized

m2

m1

m2

m1

m7

m2 = m1 m2 = m1 + m7



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



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



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



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



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


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



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



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.



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


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


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)


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


Status ISO TC 86 WG 4 Compressor Performance



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


Status ISO TC 86 WG 4 Compressor Performance



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


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


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


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)


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


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


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


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

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