This standard specifies the monitoring content, monitoring methods and qualified indicators of the energy utilization of fan units and pipe network systems. This standard applies to centrifugal and axial flow fans and blower units and pipe network systems driven by electric motors of 11kW and above. This standard does not apply to fan units and systems for conveying materials. GB/T 15913-1995 Energy-saving monitoring methods for fan units and pipe network systems GB/T15913-1995 Standard download decompression password: www.bzxz.net

ICS..27.010
National Standard of the People's Republic of China
GB/T 15913—1995
Monitoring and testing method for energy saving. of fan unlt and distribution tube systen1995-12-20Published
1996-08-01Implementation
Baoyan Technology Consulting Blue Heron Bureau
National Standard of the People's Republic of China
Mooltoring and testing method for energy saving of fan unlt and distribution tube systen 8yatem「Problem monitoring and applicable standards
GB/T15913—1995
This standard specifies the monitoring content, monitoring methods and performance indicators of the energy utilization status of fan cylinder groups and pipe network systems. This standard is applicable to centrifugal and axial flow fans and blower units and pipe network systems driven by electric Kaifu of 11kW and above. This standard does not apply to fan units and systems for conveying materials. 2 Reference standards
GB3485 Technical guidelines for evaluating the rational use of electricity in enterprises General rules for electrical energy balance of all industrial equipment
GB8223
G E8916
One-phase step-down motor load rate field test method CE10178 Ventilation disorder test
GB1247: Economic operation of three-phase asynchronous motors GB13466~13470 Variable current electrical drive fans (pumps, compressors> System economic operation and calculation methods GB.136 Energy-saving monitoring technology communication
3 Techniques
3.1 Fan unit Eanuni
The whole composed of fan constant current motor, speed regulating device and transmission mechanism, 4 Monitoring items
4.1 Monitoring source inspection items||t t||4.1.1 The fan unit is in normal operation and the system configuration is reasonable. 4.1.2 The direction of the pipeline network is reasonable and the layout should comply with the principle of fluid mechanics to reduce resistance loss. 4.1.3 There is no leakage at the connection.
4.2 Test objectives
4.2.1 Electric energy utilization rate of the fan unit.
4.2.2 Motor load efficiency.
5 Monitoring requirements and methods
5.1 Monitoring requirements
51.1 Monitoring should be carried out when the fan unit is in normal operation. If the fan is running under stable load for a long time, this condition will be defined as The positive belt operation state; the negative belt changes within a range, and the national technical supervision emotion 1995-12-20 approved 1996-08-01 implementation
GB/F15913-1995
registered in the belt section should be stopped at the operating state. 5.1.2 The continuous test time shall not be less than 30min, and the number of measurements of the measured quantity shall not be less than 3 times. A reading shall be taken every 1cm, and the average value of each group of readings shall be used as the calculated value. 5.1.3 The measuring point shall be selected to be at least 5 times the diameter of the wind inlet and outlet (equivalent to the diameter of the fan). 5.1.4 When the on-site test point cannot meet the requirements of 5.1.8, such as the fan has no inlet and outlet pipes and no flat long pipe section, a straight pipe can be installed at the fan inlet for measurement. 5.1.5 If the dynamic pressure measurement surface and the static pressure measurement surface are not on the same surface, the dynamic pressure measurement value must be converted according to the conditions of the static pressure measurement section.
5.1.6 Location and number of measuring points
8. For rectangular pipes, the required surface should be divided into several equal small scattered surfaces, and the measurement should be made at the center of each small surface. The surface of each small surface should not be greater than 100. The number of small surfaces measured on each measuring surface should not be less than 9. For rectangular pipes, when the diameter D=21.H
, L is the side length of the rectangular pipe, see Figure 1. For anaerobic pipes, the pipe section can be divided into 10 concentric rings of equal surface, and then the measurement is made at the inflection point between the drawing ring and the horizontal and vertical axes of the pipe, see Figure 2.
The measuring points of the pipeline are calculated according to formula (1):
Where:, the measuring point position of the pipeline, mm
The radius of the pipeline, mm
The number of concentric circles from the center of the circle,
According to the pipeline, the number of division rings provided in Table 1. Figure 1
(1))
4005600
>600800
>8001 300
5.7.7 Monitoring instruments and requirements
GB/T15913-—1995
Table 1 Type 1 Pipeline Measuring Points Division Ring Number Table
Division Efficiency
All measuring instruments must be in good condition and should be within the replacement period. The accuracy of the measuring instruments shall comply with the provisions of G10175 and G8916.
5. 2 Monitoring method
5.2.1 Electric energy utilization rate of fan group
Calculation of total pressure of the zone machine,
The average dynamic pressure outside the measuring point can meet the requirements of 5.1.4, and the static pressure is taken as the arithmetic average value, and the dynamic pressure is taken as the root mean square average value = (+)(p)
In the formula, by
Total pressure of fan. P+
p—average pressure of fan outlet, Pa
——average static pressure of fan outlet, Pa
Average dynamic pressure of fan inlet P
, average static pressure of fan inlet, Pa.
Calculation of fan flow:
In the formula, Q…—actual flow of the zone machine, m
The average wind speed at the measuring point, m/s
The static area of ​​the wind duct at the measuring point
...... ....+....
The wind speed can be directly measured by an anemometer that meets the accuracy requirements. The measurement point arrangement is carried out as in 5.1.6. The test results are recorded three times and then averaged. It can also be calculated according to formula (4):
Wu Zhong, Institute
Pitot correction value for measuring length, for ten standard Pitot tubes, =1; -—average dynamic pressure at the micro-surface of the measuring point +Pa1
p-..gas density at the flow disk measuring point, kg/m.P+
P=P273+7:101925
In the formula: P.
Gas density under standard conditions, kg/m*, flue gas is 1.30, air is 1.29, other media are referenced in the table); gas temperature at the measuring point section, 7
Local atmospheric pressure at the time of measurement, PA
The static value of the point is -Pa.
The wind wall section can be measured with a ruler
Calculation of the power utilization rate of the fan unit:
GE/T35913—1995
The power efficiency of the motor input power is in accordance with the provisions of GB8916. The power utilization rate of the fan unit is:
In the formula, H,-the power utilization rate of the fan unit, %H——the effective output power of the fan, kW, and the input power of the motor, kΩ.
5.2.2 Motor load rate
Where: 3---motor load rate, %:
Motor output power. Code
——motor rated power.
Motor output power is calculated according to GB16
6. Monitoring qualified indicators
6.1 The power utilization rate of the fan unit should not be lower than the following values. The motor capacity is 50% for 11~45k:
The motor capacity is above 45k code. 6.2 The motor load rate should not be lower than 40%. 7 Monitoring evaluation
7.1 The energy-saving monitoring and inspection project combined indicators and test project combined indicators of the fan unit and gastrointestinal system specified in this standard are the most basic standards for clinical testing, and the monitoring unit should use this to evaluate whether it is qualified or not. Only when all monitoring indicators are qualified can it be defined as a "fan unit and pipe network system with qualified energy-saving monitoring". 7.2 For those who fail to meet the monitoring standards, the monitoring unit shall make an evaluation report on the degree of energy filtration and put forward improvement proposals. Monitored unit
Monitored unit
Monitoring basis
Electric energy utilization rate, station
Monitoring station resultsbzxz.net
Motor load rate, %
Evaluation conclusions, handling opinions and suggestions;
Benefit measurement person in charge, (signature)
Additional instructions,
GB/T1 5913-1995
Attachment A
Energy-saving monitoring report for wind turbine and pipe network (supplement)
Monitoring notice number
Monitoring period
Measurement data
No.:
Qualified index
Monitoring unit: (stamp)
This standard is proposed by the Energy Conservation and Comprehensive Benefits Department of the State Economic and Trade Commission and the State Technical Supervision Bureau. This standard is submitted by the Energy Management Branch of the National Energy Basics and Management Standardization Technical Committee. This standard was drafted by the Harbin Economic Commission Energy Technology Service Center and others. The drafters of the car logo are Chen Pilai, He Xiaoming, Ye Wanxu, Any, Han Lianghuo, etc. 5
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