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GB 19577-2024: Minimum allowable values of the energy efficiency and energy efficiency grades for heat pumps and water chillers
GB 19577-2024
GB
NATIONAL STANDARD OF THE
PEOPLE?€?S REPUBLIC OF CHINA
ICS 27.010
CCS F 01
GB 19577-2024
Replacing GB 19577-2015, GB 29540-2013, GB 30721-2014, GB 37480-2019
Minimum allowable values of the energy efficiency and
energy efficiency grades for heat pumps and water chillers
ISSUED ON: APRIL 29, 2024
IMPLEMENTED ON: FEBRUARY 01, 2025
Issued by: State Administration for Market Regulation;
Standardization Administration of the People?€?s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Energy efficiency grades ... 8
5 Technical requirements ... 12
6 Tests and calculation methods ... 13
7 Implementation of the document ... 14
Annex A (normative) Tests and calculation methods for the cooling seasonal
performance factor of air-cooled comfort chillers (CC ??? 50 kW) ... 15
Minimum allowable values of the energy efficiency and
energy efficiency grades for heat pumps and water chillers
1 Scope
This document specifies the technical requirements for the minimum allowable values
of the energy efficiency and energy efficiency grades for heat pumps and water chillers,
describes the corresponding test methods, and clarifies the implementation of this
document.
The types of heat pumps and chillers to which this document applies include water
chilling (heat pump) packages using the vapor compression, low ambient temperature
air source heat pump (water chilling) packages, water-source (ground-source) heat
pumps, lithium bromide absorption water chillers (heaters), water-source high
temperature heat pumps using the vapor compression cycle, indirect evaporative
cooling water chillers, and integrated water chilling (heat pump) packages.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 10870 The methods of performance test for water chilling (heat pump)
packages using the vaper compression cycle
GB/T 18362 Direct-fired lithium bromide absorption water chiller (heater)
GB/T 18430.1 Water chilling (heat pump) packages using the vapor compression
cycle - Part 1: Water chilling (heat pump) packages for industrial and commercial and
similar application
GB/T 18430.2 Water chilling (heat pump) packages using the vapor compression
cycle - Part 2: Water chilling (heat pump) packages for household and similar
application
GB/T 18431 Steam and hot water type lithium bromide absorption water chiller
GB/T 19409 Water-source (ground-source) heat pumps
Under the specified standard operating conditions, the minimum allowable values of
the nominal heating coefficient of performance (COPh), low temperature heating
coefficient of performance (COPdh), heating seasonal performance factor (HSPF) and
(or) annual performance factor (APF) of low ambient temperature air source heat pump
(water chilling) packages.
NOTE: For fan-coil units, the annual performance factor (APF) is assessed for the seasonal
performance factor; for floor-heating and radiator units, the heating seasonal performance factor
(HSPF) is assessed for the seasonal performance factor.
3.3
minimum allowable values of energy efficiency for water-source (ground-source)
heat pumps
Under the specified standard operating conditions, the minimum allowable values of
the annual comprehensive coefficient of performance (ACOP) or heating coefficient of
performance (COP) of water-source (ground-source) heat pumps.
NOTE: For heat-pump units, the annual comprehensive coefficient of performance (ACOP) is
assessed; for single-heat units, the heating coefficient of performance (COP) is assessed.
3.4
minimum allowable values of energy efficiency for lithium bromide absorption
water chillers (heaters)
Under the specified standard operating conditions, the minimum allowable values of
the coefficient of performance (COP) or the maximum values of the heating source
consumption per unit cooling capacity of lithium bromide absorption water chillers
(heaters).
NOTE: For vapor units, the heating source consumption per unit cooling capacity is assessed; for
direct-fired units, the coefficient of performance (COP) is assessed.
3.5
minimum allowable values of energy efficiency for water-source high temperature
heat pumps using the vapor compression cycle
Under the specified standard operating conditions, the minimum allowable values of
the heating coefficient of performance of water-source high temperature heat pumps
using the vapor compression cycle.
NOTE: For water-source high temperature heat pumps, the heating coefficient of performance
(COPH) is assessed; for periodical feeding heat pump high temperature hot water units, the heating
coefficient of performance (COP) is assessed.
3.6
minimum allowable values of energy efficiency for indirect evaporative cooling
water chillers
Under specified standard operating conditions, the minimum allowable values of the
annual energy efficiency ratio (AEER) or energy efficiency ratio (EER) of indirect
evaporative cooling water chillers.
NOTE: For high-leaving water temperature chillers base on dew point indirect evaporative cooling
used in data centers and similar places, the annual energy efficiency ratio (AEER) is assessed; for
composite indirect evaporative cooling water chillers used in computer and data processing rooms,
the energy efficiency ratio (EER) is assessed.
3.7
minimum allowable values of energy efficiency for integrated water chilling (heat
pump) package
Under specified standard operating conditions, the minimum allowable values of the
integrated part load value (IPLVI) and nominal operating coefficient of performance
(COPI) of integrated water chilling (heat pump) packages.
NOTE: For vapor-cooled, cooling-tower and air-cooled units, the integrated part load value (IPLVI)
and nominal operating coefficient of performance (COPI) are assessed.
4 Energy efficiency grades
4.1 The energy efficiency grades for heat pumps and water chillers are divided into 3
grades, among which grade 1 has the highest energy efficiency.
4.2 The measured values and nominal values of the energy efficiency indicators of
various types of heat pumps and water chillers shall not be less than the specified values
corresponding to the energy efficiency grades in Tables 1 to 8. Among them, the
indicators of energy efficiency grades for water chilling (heat pump) packages using
the vapor compression adopt dual-channel evaluation indicators, i.e., select the energy
efficiency value of one of the indicator systems in the comprehensive part load value
(IPLV) (see Table 1) or the coefficient of performance (COPc) (see Table 2) to determine
the energy efficiency grade.
NOTE: The specific product types of water chilling (heat pump) packages using the vapor
compression, low ambient temperature air source heat pumps (chillers), low ambient temperature
air source heat pump (water chilling) packages, water-source (ground-source) heat pumps, lithium
bromide absorption water chillers (heaters), water-source high temperature heat pumps using the
vapor compression cycle, indirect evaporative cooling water chillers, and integrated water chilling
(heat pump) package mentioned in this document are the product types mentioned in Tables 1 to 8.
efficiency for low ambient temperature air source heat pump (water chilling) packages,
the minimum allowable values of energy efficiency for water-source (ground-source)
heat pumps, the minimum allowable values of energy efficiency for lithium bromide
absorption water chillers (heaters), the minimum allowable values of energy efficiency
for water-source high temperature heat pumps using the vapor compression cycle, the
minimum allowable values of energy efficiency for indirect evaporative cooling water
chillers, and the minimum allowable values of energy efficiency for integrated water
chilling (heat pump) packages are the indicator values corresponding to energy
efficiency grade 3 in Tables 1 to 8.
5.2 For low ambient temperature air source heat pump (water chilling) packages with
electric auxiliary heating, the electric auxiliary heating system shall be manually turned
on and off, and its working status shall be expressed in an obvious position.
5.3 The marked values of energy efficiency for heat pumps and water chillers shall be
within the range of values corresponding to their rated energy efficiency grades, and
the measured values of energy efficiency shall not be less than the provisions in the
corresponding product standards in Tables 1 to 8.
NOTE: The marked values and measured values of energy efficiency for water chilling (heat pump)
packages using the vapor compression, low ambient temperature air source heat pump (water
chilling) packages, water-source (ground-source) heat pumps, lithium bromide absorption water
chillers (heaters), water-source high temperature heat pumps using the vapor compression cycle,
and indirect evaporative cooling water chillers are rounded off to multiples of 0.01, and the marked
values and measured values of energy efficiency for integrated water chilling (heat pump) packages
are rounded off to multiples of 0.1.
5.4 The marked values of the nominal cooling (heating) capacity of the unit shall be
within the range of the nominal cooling (heating) capacity corresponding to its rated
energy efficiency grade, and the measured value of the nominal cooling (heating)
capacity shall not be less than the provisions in the corresponding product standards in
Tables 1 to 8.
6 Tests and calculation methods
6.1 The energy efficiency test method for water chilling (heat pump) packages using
the vapor compression shall be carried out in accordance with the relevant provisions
of GB/T 18430.1 and GB/T 18430.2. The test and calculation of air-cooled comfort
chillers with a nominal cooling capacity not exceeding 50 kW shall be carried out in
accordance with the provisions of Annex A.
6.2 The energy efficiency test method for low ambient temperature air source heat pump
(water chilling) packages shall be carried out in accordance with the relevant provisions
of GB/T 25127.1 and GB/T 25127.2.
6.3 The energy efficiency test method for water-source (ground-source) heat pumps
shall be carried out in accordance with the relevant provisions of GB/T 19409.
6.4 The energy efficiency test method of lithium bromide absorption water chillers
(heaters) shall be carried out in accordance with the relevant provisions of GB/T 18431
and GB/T 18362.
6.5 The energy efficiency test method for water-source high temperature heat pumps
using the vapor compression cycle shall be carried out in accordance with the relevant
provisions of GB/T 25861 and JB/T 12840.
6.6 The energy efficiency test method for indirect evaporative cooling water chillers
shall be carried out in accordance with the relevant provisions of JB/T 14642 and JB/T
14640. The dry-bulb and wet-bulb temperature distribution coefficients, used for the
test conditions and calculation of the annual energy efficiency ratio (AEER) of high-
leaving water temperature chillers base on dew point indirect evaporative cooling used
in data centers and similar places, are tested and calculated according to the provisions
for cold regions (refer to Beijing) in JB/T 14642 (referenced to Beijing).
6.7 The energy efficiency test method for integrated water chilling (heat pump)
packages shall be carried out in accordance with the relevant provisions of JB/T 12839.
7 Implementation of the document
Products produced or imported on the date of implementation of this document shall
comply with the requirements of this document.
The sales of products produced or imported before the implementation of this document
shall only be delayed until the 24th month after the implementation of this document.
Key:
A - test point of 100 % load rate;
B - test point of 75 % load rate;
C - test point of 50 % load rate;
D - test point of 25 % load rate.
Figure A.1 -- Cooling load line
A.3 Test methods
Under the rated voltage and test conditions specified in Table A.1, according to the
method specified in GB/T 10870, measure the cooling capacity and cooling power
consumption of the unit at the test points of four operating conditions: A, B, C, and D
respectively, and calculate the cooling coefficient of performance of the corresponding
load point according to the method in A.4:
a) For units using a single fixed-frequency/fixed-speed compressor: test at rated
voltage and rated frequency;
b) For units using multiple fixed-frequency/fixed-speed compressors: start the
appropriate number of compressors according to the needs through the control
system of the unit, so that the unit can stabilize at the load rate specified in Table
A.1;
NOTE: If the control system of the unit does not set the compressor number start logic, test it as
a fixed-frequency/fixed-speed unit.
c) For variable-frequency/variable-capacity units: the operating frequency or
capacity of the compressor shall be adjusted to an appropriate value so that the
unit can stably operate at the load rate specified in Table A.1.
A.4 Calculation methods
A.4.1 Cooling seasonal total load
The cooling seasonal total load CSTL is calculated according to formula (A.2).
where:
Qc(tj) - the cooling capacity of each load of the unit, in kilowatts (kW);
nj - the working time at each temperature of cooling in the cooling season, in hours
(h).