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GB/T 25127.2-2010 (GBT25127.2-2010)

GB/T 25127.2-2010_English: PDF (GBT 25127.2-2010, GBT25127.2-2010)
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GB/T 25127.2-2010English85 Add to Cart 0--9 seconds. Auto-delivery Low ambient temperature air source heat pump (water chilling) packages -- Part 2: Heat pump (water chilling) packages for household and similar application Obsolete GB/T 25127.2-2010

BASIC DATA
Standard ID GB/T 25127.2-2010 (GB/T25127.2-2010)
Description (Translated English) Low ambient temperature air source heat pump (water chilling) packages. Part 2: Heat pump (water chilling) packages for household and similar application
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J73
Classification of International Standard 27.200
Word Count Estimation 15,174
Date of Issue 2010-09-26
Date of Implementation 2011-02-01
Quoted Standard GB/T 1720; GB/T 2423.17; GB/T 10870; GB/T 13306; GB/T 13384; GB/T 17758; GB/T 18430.1-2007; GB/T 18430.2-2007; GB 19577; GB 25131; JB/T 4330-1999; JB/T 7249
Drafting Organization Dalian Refrigeration Co., Ltd.
Administrative Organization National Standardization Technical Committee refrigeration and air conditioning equipment
Regulation (derived from) National Standard Approval Announcement 2010 No.6 (Total No.161)
Proposing organization China Machinery Industry Federation
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard specifies the heat (cold water) unit (hereinafter referred to as " units ") of the terms and definitions, Types and basic parameters, requirements, test methods, inspection rules, signs, packaging, transport and storage. This section applies to an amount not greater than 50kW cooling air is hot (cold) heat source (cold water) unit, and can get hot water units at no less than -20��C ambient temperature inside, other similar units available for implementation.

Standards related to: GB/T 25127.2-2010

GB/T 25127.2-2010
ICS 27.200
J 73
GB
NATIONAL STANDARD OF THE
PEOPLE'S REPUBLIC OF CHINA
Low ambient temperature air source heat pump (water
chilling) packages – Part 2. Heat pump (water chilling)
packages for household and similar application
ISSUED ON. SEPTEMBER 26, 2010
IMPLEMENTED ON. FEBRUARY 01, 2011
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 5 
4 Types and basic parameters ... 7 
5 Requirements ... 9 
6 Test methods ... 15 
7 Inspection rules ... 21 
8 Marking, packaging, transportation and storage ... 23 
Foreword
GB/T 25127 “Low ambient temperature air source heat pump (water chilling)
packages” is composed of two parts.
- Part 1. Heat pump (water chilling) packages for industrial & commercial
and similar application
- Part 2. Heat pump (water chilling) packages for household and similar
application
This part is the part 2 of GB/T 25127 “Low ambient temperature air source
heat pump (water chilling) packages”.
This part was proposed by the China Machinery Industry Federation.
This part shall be under the National Technical Committee for
Standardization of Refrigerating and Air-Conditioning Equipment (SAC/TC
238).
This part was responsibly drafted by Dalian Refrigeration Co., Ltd., Dalian
Sanyo Compressor Co., Ltd., Hefei General Machinery Research Institute,
NB Wave Heat Technology Co., Ltd., Shenzhen McQuay Air Conditioning
Equipment Co., Ltd. Zhejiang Zhengli Electronic Co., Ltd., Hefei General
Electrical and Mechanical Products Testing Institute, Hefei General
Environmental Control Technology Co., Ltd.
The participating drafting organizations of this part. Emerson Environmental
Optimization Technology (Suzhou) Co., Ltd., Ningbo Oaks Electric Co., Ltd.,
Tsinghua Tongfang Artificial Environment Co., Ltd., Daikin Air Conditioning
(Shanghai) Co., Ltd.
The main drafters of this part. Qin Haijie, Qiao Qili, Pan Li, Zhao Zhihai,
Wang Jiping, Zhou Hongjun, Huang Daode, Tian Xudong, Wen Maohua,
Dong Yunda, Zhang Leping, Shi Jianchun.
With respect to this part, the National Committee for Standardization of
Refrigeration Air-conditioning Equipment is responsible for the interpretation.
This part is first developed.
Low ambient temperature air source heat pump
(water chilling) packages – Part 2. Heat pump (water
chilling) packages for household and similar
application
1 Scope
This part of GB/T 25127 specifies the terms and definitions, types and basic
parameters, requirements, test methods, test rules, marking, packaging,
transportation, and storage for low ambient temperature air source heat
pump (water chilling) packages (hereinafter referred to as “packages”) for
household and similar application which is driven by electric motors.
This part is applicable to the air heat (cold) source heat pump (water chilling)
packages the cooling capacity of which is not more than 50 kW, AND such
packages shall be able to produce hot water in the ambient temperature of
not lower than -20 °C. Other similar packages can also refer to this part.
2 Normative references
The provisions in following documents become the provisions of this part
through reference in this part of GB/T 25127. For the dated references, the
subsequent amendments (excluding corrections) or revisions do not apply to
this part; however, parties who reach an agreement based on this part are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document
applies.
GB/T 1720 Determination of film adhesion
GB/T 2423.17 Environmental testing for electric and electronic products –
Part 2. Test method – Test Ka. Salt mist (GB/T 2423.17-2008, IEC
60068-2-11.1981, IDT)
GB/T 10870 The methods of performance test for positive displacement &
centrifugal water-chilling units and heat pump
GB/T 13306 Plate
5 Requirements
5.1 General requirements
5.1.1 The packages shall comply with the requirements of this part, AND be
manufactured in accordance with the drawings and technical documents
approved as per the prescribed procedure (or as agreed between the user
and the manufacturer).
5.1.2 The packages shall, except for all cooling (heating) system components,
be generally equipped with cold (hot) water circulating pumps, piping and
accessories.
5.1.3 As for the ferrous metal parts of the packages, the surface shall be
subject to anti-corrosion treatment.
5.1.4 The electroplating part surface shall be smooth and uniform in color,
AND it shall be free from such defects as peeling, bottom exposure, pinhole,
apparent spots, and scratches, etc.
5.1.5 The package’s coating part surface shall be flat, uniform coating,
uniform color, AND it shall be free from such defects as apparent bubbles,
flow marks, holiday, primer exposure, and other wrinkles and damages.
5.1.6 The package’s decorative plastic part surface shall be flat and smooth,
uniform color, AND it shall be free from such defects as cracks, bubbles, and
apparent shrinkages, etc.; the plastic parts shall be aging resistant.
5.1.7 Salt mist resistance of electroplating parts
As for each rust point on the package’s metal coating, its area shall not
exceed 1 mm2. Within each 100 cm2 of sample, the number of rust points
AND rust marks on the coating shall not exceed 2; when the sample is less
than 100 cm2, it shall have no rust point or mark.
5.1.8 Coating adhesion of coating part
The coating adhesion of the package’s coating part shall reach over grade II
as specified in GB/T 1720.
5.1.9 The package’s parts & components and materials shall comply with the
provisions of relevant standards, AND meet the performance requirements.
5.1.10 Before charging the refrigerant, the package’s internal surface which
contacts with the refrigerant and lubricating oil shall be kept clean and dry,
AND the package’s external surface shall be kept clean.
5.5.2.1 If the package cannot run at some of the load points of 75%, 50% or
25%, it is allowed for the package to run at the rest of the load points under
the operating conditions as specified in Table 2, MEASURE the coefficient of
performance of each load point, USE straight line to connect different load
points, and DRAW the part load curve; then based on the curve, USE the
interpolation method to calculate the coefficient of performance of the
package’s part load points which are to be calculated; BUT it is not allowed to
use the extrapolation method.
5.5.2.2 If the package cannot be unloaded to 75%, 50% or 25%.
a) If the package cannot be unloaded to 25% BUT less than 50%, then its
COP at 75% and 50% shall be obtained in accordance with 5.5.2.1;
MAKE the package run under minimum load, at the 25% load conditions
as specified in Table 2, MEASURE the heating (cooling) coefficient of
performance, then USE the equation (3) to calculate the COP at 25%
load.
b) If the package cannot be unloaded to 50% BUT less than 75%, then its
COP at 75% shall be obtained in accordance with 5.5.2.1; MAKE the
package run under minimum load, at the 50% and 25% load conditions
as specified in Table 2, MEASURE the heating (cooling) coefficient of
performance, then USE the equation (3) to calculate the COP at 50%
and 25% load.
Where.
Qm - Measured heating (cooling) capacity, in the unit of kilowatts (kW);
Pm - Measured total electric power consumption, in the unit of kilowatts
(kW);
CD - The attenuation factor due to the intermittent shutdown of the
compressor due to the inability of the package to be unloaded to the
minimum load, which is calculated using the equation (4).
Where.
LF - Load factor, which is calculated using the equation (5);
the leakage tester (sensitivity of 5 × 10-6 Pa • m3/s) to conduct test; AND the
results shall comply with the provisions of 5.2.1.
6.3.1.2 Pressure test
When the water side of the package is under 1.25 times of the design
pressure (hydraulic pressure) OR 1.15 times of the design pressure
(atmospheric pressure), OBSERVE each part and joint; AND the results shall
comply with the provisions of 5.2.2.
6.3.2 Performance test under nominal operating condition
6.3.2.1 Cooling capacity and total electric power consumption
ADJUST the package to the maximum cooling capacity. Under the nominal
cooling condition as specified in Table 1, the cooling capacity shall, in
accordance with the provisions of GB/T 10870, be tested, measured and
calculated using the liquid refrigerant method (the verification test adopts the
package heat balance method). As for the ambient temperature and humidity
conditions of the exothermic side, it can use the air conditioning device of the
air enthalpy difference method as specified in GB/T 17758 to make it achieve
to the required working conditions. The total ele...
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