ISO 16358-2:2013

INTERNATIONAL ISO
STANDARD 16358-2
First edition
2013-04-15
Air-cooled air conditioners and air-
to-air heat pumps — Testing and
calculating methods for seasonal
performance factors —
Part 2:
Heating seasonal performance factor
Climatiseurs à condenseur à air et pompes à chaleur air/air — Essais
et méthodes de calcul des coefficients de performance saisonniers —
Partie 2: Coefficient de performance saisonnier de chauffage (COPSC)
Reference number
©
ISO 2013
© ISO 2013
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Published in Switzerland
ii © ISO 2013 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 4
5 Tests . 7
5.1 General . 7
5.2 Test conditions . 7
5.3 Test methods . 9
6 Calculations.10
6.1 Heating seasonal performance factor (HSPF) and total heating seasonal performance
factor (THSPF) .10
6.2 Defined heating load .10
6.3 Outdoor temperature bin distribution for heating .10
6.4 Heating seasonal characteristics of fixed capacity units .11
6.5 Heating seasonal characteristics of two-stage capacity units .13
6.6 Heating seasonal characteristics of multi-stage capacity units .15
6.7 Heating seasonal characteristics of variable capacity units .20
7 Test report .24
Annex A (informative) Figures .26
Annex B (informative) Calculation of total heating seasonal performance factor (THSPF) .30
Annex C (normative) Testing and calculation method for degradation coefficient of
cyclic operation .32
Annex D (informative) Calculating method for seasonal performance factor when setting a
specific heating load .35
Annex E (informative) Calculating method for temperature when defined load line crosses each
capacity line .36
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received. www.iso.org/patents
Any trade name used in this document is information given for the convenience of users of this document
and does not constitute an endorsement. Equivalent products can be used if they can be shown to lead
to the same results.
The committee responsible for this document is ISO/TC 86, Refrigeration and air-conditioning,
Subcommittee SC 6, Testing and rating of air-conditioners and heat pumps.
The parts of ISO 16358 are given below:
— Part 1: Cooling seasonal performance factor
— Part 2: Heating seasonal performance factor
— Part 3: Annual performance factor
iv © ISO 2013 – All rights reserved

INTERNATIONAL STANDARD ISO 16358-2:2013(E)
Air-cooled air conditioners and air-to-air heat
pumps — Testing and calculating methods for seasonal
performance factors —
Part 2:
Heating seasonal performance factor
1 Scope
1.1 This part of ISO 16358 specifies the testing and calculating methods for seasonal performance factor
of equipment covered by ISO 5151, ISO 13253 and ISO 15042. For the purposes of this part of ISO 16358,
it is assumed that any make-up heating will be provided by electric heaters running concurrently with
the heat pump.
1.2 This part of ISO 16358 also specifies the seasonal performance test conditions and the corresponding
test procedures for determining the seasonal performance factor of equipment, as specified in 1.1, under
mandatory test conditions and is intended for use only in marking, comparison, and certification purposes.
1.3 This part of ISO 16358 does not apply to the testing and rating of:
a) water-source heat pumps or water-cooled air conditioners;
b) portable units having a condenser exhaust duct;
c) individual assemblies not constituting a complete refrigeration system; or
d) equipment using the absorption refrigeration cycle.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 5151, Non-ducted air conditioners and heat pumps — Testing and rating for performance
ISO 13253, Ducted air-conditioners and air-to-air heat pumps — Testing and rating for performance
ISO 15042, Multiple split-system air-conditioners and air-to-air heat pumps — Testing and rating for performance
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5151, ISO 13253, ISO 15042
and the following apply.
3.1
defined heating load, L
h
heat defined as heating demand for a given outdoor temperature
3.2
make-up heating
electric heat required to cover the deficiency of the heating capacity delivered by the heat pump for
the heating load
3.3
heating seasonal total load
HSTL
total annual amount of heat, including make-up heat, which is added to the indoor air when the equipment
is operated for heating in active mode
3.4
heating seasonal energy consumption
HSEC
total annual amount of energy consumed by the equipment, including make-up heat, when it is operated
for heating in active mode
3.5
heating seasonal performance factor
HSPF
ratio of the total annual amount of heat that the equipment, including make-up heat, can add to the
indoor air when operated for heating in active mode to the total annual amount of energy consumed by
the equipment during the same period
3.6
part load factor
PLF
ratio of the performance when the equipment is cyclically operated to the performance when the
equipment is continuously operated, at the same temperature and humidity conditions
3.7
degradation coefficient, C
D
coefficient that indicates efficiency loss caused by cyclic operation
3.8
fixed capacity unit
equipment which does not have possibility to change its capacity
Note 1 to entry: to entry This definition applies to each cooling and heating operation individually.
3.9
two (2)-stage capacity unit
equipment where the capacity is varied by two steps
Note 1 to entry: This definition applies to each cooling and heating operation individually.
3.10
multi-stage capacity unit
equipment where the capacity is varied by 3 or 4 steps
Note 1 to entry: This definition applies to each cooling and heating operation individually.
3.11
variable capacity unit
equipment where the capacity is varied by five or more steps to represent continuously variable capacity
Note 1 to entry: This definition applies to each cooling and heating operation individually.
2 © ISO 2013 – All rights reserved

3.12
heating full-load operation
operation with the equipment and controls configured for maximum continuous refrigeration capacity
at H1 condition
Note 1 to entry: Unless otherwise regulated by the automatic controls of the equipment, all indoor units and
compressors shall be functioning.
3.13
heating extended-load operation
operation of the equipment at maximum continuous refrigeration capacity at H2 condition
Note 1 to entry: Unless otherwise regulated by the automatic controls of the equipment, all indoor units and
compressors shall be functioning.
3.14
minimum-load operation
operation of the equipment and controls at minimum continuous refrigeration capacity
Note 1 to entry: All indoor units shall be functioning
3.15
standard heating full capacity
heating capacity at H1 at full-load operating condition
3.16
standard heating full power input
electric power input at H1 at full-load operating condition
3.17
standard heating half capacity
capacity which is 50 % of heating full capacity at H1 condition with all indoor units functioning
3.18
standard heating half power input
electric power input when operated at 50 % of heating full capacity at H1 condition with all indoor
units functioning
3.19
standard heating minimum capacity
capacity which is minimum heating capacity at H1 condition at the minimum-load operation
3.20
standard heating minimum power input
electric power input when operated at minimum heating capacity at H1 condition at the minimum-
load operation
3.21
standard heating extended capacity
heating capacity when operated at H2 condition at the extended-load operation
3.22
standard heating extended power input
electric power input when operated at H2 condition at the extended-load operation
3.23
total heating seasonal performance factor
THSPF
ratio of the total annual amount of heat that the equipment, including make-up heat, can add to the indoor
air to the total annual amount of energy consumed by the equipment, including the active, inactive and
disconnected modes
3.24
active mode
mode corresponding to the hours with a heating demand of the building and whereby the heating
function of the unit is switched on
3.25
inactive mode
mode corresponding to the hours when the unit is not operating to meet heating demand
Note 1 to entry: This mode may include the operation of a crankcase heater.
3.26
disconnected mode
mode cor
...