JIS-B-9910-1994-R2001-ENG.pdf
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1、J IS JAPANESE I N DUSTR IAL STAN DARD Translated and Published by Japanese Standards Association (Reaffirmed : 2001) Method of measuring performance for dust collectors ICs 23.120 Descriptors : dust collectors, performance, performance testing, measurement Reference number : JIS B 9910 : 1994 (E) Co
2、pyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:53:54 MDTNo reproduction or networking permitted without license from IHS -,-,- B 9910: 1994 Foreword This translation has been made based o
3、n the original Japanese Industrial Standard revised by the Minister of International Trade and Industry through deliberations at the Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law. Date of Establishment: 1973-02-01 Date of Revision: 1994-07-01 Date of R
4、eaffirmation: 2001-08-20 Date of Public Notice in Official Gazette: 2001-08-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on General Machinery JIS B 9910: 1994, First English edition published in 2002-06 Translated and published by: Japanese Standards Association 4-1
5、-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, elect
6、ronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:53:54 MDTNo
7、reproduction or networking permitted without license from IHS -,-,- JAPANESE INDUSTRIAL STANDARD JIS B 9910 : 1994 Method of measuring performance for dust collec tors 1 mance for dust collectors used for separating dust from gas stream. Scope This Japanese Industrial Standard specifies method of me
8、asuring perfor- Remarks 1 The units and numerical values given in 1 in this Standard are based on the traditional unit system and are appended for informative refer- ence. 2 The normative references to this Standard are listed in Attached Table 1. 2 Items of measuring performance for dust collectors
9、 The items required for meas- uring performance for dust collectors should be suitably selected out of the following items: Temperature, static pressure and composition of gas in the inlet and outlet ducts of dust collector Gas flow rate in the inlet and outlet ducts of dust collector Pressure loss
10、of dust collector Dust concentration of the gas in the inlet and outlet ducts of dust collector Dust flow rate in the inlet and outlet ducts of dust collector Collection efficiency or penetration of dust collector Specific gravity and particle size distribution of dust in the inlet and outlet ducts
11、of dust collector and collected dust Apparent electric resistivity of dust in the inlet duct of dust collector or collected dust Quantity of used water and liquid-gas flow rate ratio in dust collector (10) Quantity and quality of drainage from dust collector (il) Power consumption of dust collector
12、(12) Noise of dust collector 3 Definitions Main terms to be used in this Standard shall conform to JIS B 9909. 4 General rules of measuring method The measurement of each item specified in clause 2 shall be conducted by selecting the time when, as a rule, the operating condi- tions of dust collector
13、 and dust generating source are stable. Further, if there is periodicity in the operating conditions, the measurement should Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:53:54 MDTNo r
14、eproduction or networking permitted without license from IHS -,-,- 2 B 9910 : 1994 be conducted at least for the longer term than one period. Referring to the measuring items (1) to (7), their measurements are to be conducted at the inlet and outlet ducts over the same period of time, and their meas
15、uring points should be selected; as a rule, according to the provisions of JIS 2 8808. Moreover, the measuring positions should be selected as near as possible to the dust collector, but not so as to affect the accuracy of the measurement and the performance of the dust collector. 5 Measuring method
16、 of gas temperature, static pressure and composition i n inlet and outlet ducts of dust collector 5.1 Measuring method of temperature Measuring method of gas temperature shall be conducted by means of liquid-in-glass thermometer or electrical thermometer at each measuring point, conforming to JIS Z
17、8704 or JIS Z 8705, and the results obtained shall be averaged. 5.2 Measuring method of static pressure Static pressure at each measuring point shall be measured by using a Pitot-static tube, and the results obtained shall be aver- aged. When two static pressure taps are provided on the right and le
18、ft sides of duct wall, and their readings of the static pressure do not differ so much, then the averaged value may be adoptable. 5.3 Method of analyzing gas composition Gas analysis shall be conducted conforming to the provisions specified in JIS K 0103, JIS K 0104, JIS K 2301, JIS Z 8808, etc. 6 M
19、easuring method of gas flow rate in inlet and outlet ducts of dust collector The gas flow rate shall be measured by means of orifice or nozzle specified in JIS Z 8808 and JIS B 8330, and shall be expressed by converting into any one of the following condi- tions. (1) Wet gas flow rate at the conditi
20、on of temperature and pressure in the inlet and out- let ducts (2) Dry gas flow rate at the condition of temperature and pressure in the inlet and out- let ducts (3) Wet gas flow rate at the standard condition temperature O O C , pressure 101.3 kPa (760 mmHg) (4) Dry gas flow rate at the standard co
21、ndition (5) Wet gas flow rate at the specified condition (6) Dry gas flow rate at the specified condition 7 Calculating method of pressure loss in dust collector The pressure loss shall be expressed by the difference of the mean total pressures of flow gas between the inlet and outlet ducts of dust
22、collector, and obtained from the total pressure and velocity of flow gas measured with the Pitot tube at each measuring point in the following ways: Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/
23、14/2007 03:53:54 MDTNo reproduction or networking permitted without license from IHS -,-,- 1 3 B 9910 : 1994 -Pto + P H - Piiivii + Pti2Vi2 +. . + Piinvin p . = Vil +vi2 + + v, - PioVo + Pio2V02 +. . + Pionvon vol +voz + +von - Pto - P H =(Po - P)SH where dp : pressure loss (kPa)mmH,O or kgf/m2 p, :
24、 total pressure of gas ; that is pt =p+pd in which p is static pressure and pd is dynamic pressure. Further, if the density of gas is p (kg/m3), and the gas velocity is v (m/s), then pd=Pv2 . pl : mean total pressure in duct (kPa)mmH,O or kgf/m2 pti . pl2, ptn : total pressure of gas at each measuri
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