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GB 19762-2007

Chinese Standard: 'GB 19762-2007'
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BASIC DATA
Standard ID GB 19762-2007 (GB19762-2007)
Description (Translated English) The minimum allowable values of energy efficiency and evaluating values of energy conservation of centrifugal pump for frensh water
Sector / Industry National Standard
Classification of Chinese Standard F01
Classification of International Standard 27.010
Word Count Estimation 12,192
Date of Issue 2007-11-02
Date of Implementation 2008-07-01
Older Standard (superseded by this standard) GB 19762-2005
Quoted Standard GB/T 3216-2005; GB/T 5657-1995; GB/T 7021; GB/T 13006
Drafting Organization China National Institute of Standardization
Administrative Organization National Energy Foundation and Management Standardization Technical Committee Technical Committee rational use of electricity
Regulation (derived from) Announcement of Newly Approved National Standards No. 12 of 2007 (total 112)
Proposing organization National Standardization Technical Committee for Energy Management
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This Chinese standard specifies the basic requirements for water pump, pump efficiency, energy efficiency limit the pump, the pump target energy efficiency limit, the pump energy conservation evaluation values ??. This standard applies to single-stage single-suction water pump, single-stage double-suction water pump, multistage centrifugal pump water. This standard does not apply to other types of pumps.

GB 19762-2007
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.010
F 01
Replacing GB 19762-2005
The minimum allowable values of energy efficiency
and evaluating values of energy conservation of
centrifugal pump for fresh water
清水离心泵能效限定值及节能评价值
ISSUED ON. NOVEMBER 2, 2007
IMPLEMENTED ON. JULY 1, 2008
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 5 
4 Basic requirements ... 6 
5 Pump efficiency ... 6 
6 The minimum allowable values of energy efficiency for pumps ... 7 
7 The target minimum allowable values of energy efficiency for pumps ... 7 
8 The evaluating values of energy conservation for pumps ... 8 
Appendix A ... 17 
Foreword
Clause 6 and Clause 7 of this Standard are mandatory; the rest are
recommendatory.
This Standard replaces GB 19762-2005 The minimum allowable values of
energy efficiency.
Compared with GB 19762-2005, this Standard mainly makes the following
changes.
- Added the target minimum allowable values of energy efficiency for pump;
index increase rate is 1% ~ 2%;
- Added Table 2, Table 3 and Table 4;
- Modified Figure 1 and Figure 2 of GB 19762-2005;
- Modified 5.1 of GB 19762-2005;
- Deleted Figure 5 and Figure 6 of GB 19762-2005;
- Deleted Clause 4 of GB 19762-2005;
- Deleted content about centrifugal long axis deep well pump.
Appendix A and Appendix B of this Standard are informative.
This Standard was proposed by National Technical Committee on Energy
Fundamentals and Management of Standardization Administration of China.
This Standard shall be under the jurisdiction of Sub-technical Committee on
Reasonable Electricity of National Technical Committee on Energy
Fundamentals and Management of Standardization Administration of China.
Drafting organizations of this Standard. China National Institute of
Standardization, Zhejiang University of Technology, Institute of Industrial
Pumps, Shenyang Institute of Pumps, Shanghai East Pump (Group) Co., Ltd.,
Shanghai Kaiquan Pump (Group) Co., Ltd., Shanghai Liancheng (Group) Co.,
Ltd., Guangdong Foshan Pump Factory Co., Ltd., National Center for
Supervision & Inspection of Drainage Irrigation & Water-saving Equipment
Products Quality, and Shanghai People Electricity Machine Limited.
Main drafters of this Standard. Zhang Xin, Mou Jiegang, Zhao Yuejin, Liu
Weiwei, Yuan Zongjiu, Xiao Gonghuai, Song Qingsong, Chen Longling, Hu Tao
and Liu Ping.
The minimum allowable values of energy efficiency
and evaluating values of energy conservation of
centrifugal pump for fresh water
1 Scope
This Standard specifies basic requirements, pump efficiency, the minimum
allowable values of energy efficiency, the target minimum allowable values of
energy efficiency, and evaluating values of energy conservation of centrifugal
pump for fresh water (hereinafter referred to as “pump”).
This Standard is applicable to single-stage single-suction, single-stage double-
suction and multi-stage centrifugal pumps for fresh water.
This Standard does not apply to other types of pumps.
2 Normative references
The following standards contain the provisions which, through reference in this
Standard, constitute the provisions of this Standard. For dated references, the
subsequent amendments (excluding corrections) or revisions do not apply to
this Standard. However, the parties who enter into agreement based on this
Standard are encouraged to investigate whether the latest versions of these
documents are applicable. For undated reference documents, the latest
versions apply to this Standard.
GB/T 3216-2005 Rotodynamic pumps Hydraulic performance acceptance
tests Grades 1 and 2 (ISO 9906.1999, MOD)
GB/T 5657-1995 Technical specifications for centrifugal pumps - Class III
(eqv ISO 9908.1993)
GB/T 7021 Glossary of terms for centrifugal pump
GB/T 13006 NPSH for centrifugal, mixed flow and axial pumps
3 Terms and definitions
Terms and definitions defined in GB/T 7021 and the following ones apply to this
Pu - Pump output power (effective power), in kilowatts (KW);
Pa - Pump shaft power (input power), in kilowatts (KW).
5.2 Pump output power is calculated according to formula (2).
Where,
ρ - Density, in kilograms per cubic meter (kg/m3);
g - Acceleration of gravity, g = 9.81 m/s2;
Q - Flow, in cubic meters per second (m3/s);
H - Head, in meters (m).
6 The minimum allowable values of energy efficiency
for pumps
6.1 When flow is within 5 m3/h ~ 10000 m3/h, the minimum allowable values
of energy efficiency for pumps η1 shall be determined according to Table 1.
Calculation examples are shown in Appendix A.
6.2 When flow is greater than 10000 m3/h, the minimum allowable values of
energy efficiency for single-stage single-suction centrifugal pump for fresh
water η1 shall be 87% and that for single-stage double-suction centrifugal pump
for fresh water η1 shall be 86%.
7 The target minimum allowable values of energy
efficiency for pumps
7.1 When flow is within 5 m3/h ~ 10000 m3/h, specific speed is within 20~300,
the target minimum allowable values of energy efficiency for pumps η2 shall be
determined as follows. η2 for single-stage centrifugal pump for fresh water shall
be directly read from Figure 1 curve “the target minimum allowable values” or
checked from column “the target minimum allowable values” in Table 2; η2 for
multi-stage centrifugal pump for fresh water shall be directly read from Figure 2
curve “the target minimum allowable values” or checked from column “the target
minimum allowable values” in Table 3. If specific speed is within 20~120 and
210~300, its target minimum allowable values η2 shall be respectively corrected
based on the provisions of Figure 3, Figure 4 or Table 4. Calculation examples
are shown in Appendix B.
7.2 When flow is greater than 10000 m3/h, the target minimum allowable
values for pumps η2 shall be 88%.
7.3 The target minimum allowable values for pumps η2 shall be implemented
3 years after the date of implementation of this Standard, and shall replace the
minimum allowable values of energy efficiency for pumps η1 in Clause 6 of this
Standard.
8 The evaluating values of energy conservation for
pumps
8.1 When flow is within 5 m3/h ~ 10000 m3/h, the evaluating values of energy
conservation for pumps η3 shall be determined according to Table 1. Calculation
examples are shown in Appendix A.
8.2 When flow is greater than 10000 m3/h, the evaluating values of energy
conservation for pumps η3 shall be 90%.
column “reference
value”
Single-
stage
double-
suction
centrifugal
pump for
fresh
water
≤ 600
120~210
According to Figure 1
curve “reference value”
or check η in Table 2
column “reference
value”
0 η0 = η η1= η0− 3 η3= η0+ 2
<120, >210
According to Figure 1
curve “reference value”
or check η in Table 2
column “reference
value”
According to Figure 3
or Figure 4 or check
Δη in Table 4
η0 = η − Δη η1= η0− 3 η3= η0+ 2
>600
120~210
According to Figure 1
curve “reference value”
or check η in Table 2
column “reference
value”
0 η0 = η η1= η0− 4 η3= η0+ 1
<120, >210
According to Figure 1
curve “reference value”
or check η in Table 2
column “reference
value”
According to Figure 3
or Figure 4 or check
Δη in Table 4
η0 = η − Δη η1= η0− 4 η3= η0+ 1
Multi-
stage
centrifugal
pump for
≤ 100 120~210
According to Figure 2
curve “reference value”
or check η in Table 3
column “reference
0 η0 = η η1= η0− 3 η3= η0+ 2
fresh
water
value”
<120, >210
According to Figure 2
curve “reference value”
or check η in Table 3
column “reference
value”
According to Figure 3
or Figure 4 or check
Δη in Table 4
η0 = η − Δη η1= η0− 3 η3= η0+ 2
>100
120~210
According to Figure 2
curve “reference value”
or check η in Table 3
column “reference
value”
0 η0 = η η1= η0− 4 η3= η0+ 1
<120, >210
According to Figure 2
curve “reference value”
or check η in Table 3
column “reference
value”
According to Figure 3
or Figure 4 or check
Δη in Table 4 ......
Related standard: GB 19761-2020    GB 19761-2009
Related PDF sample: GB 19761-2020    GB 19761-2009