Numerical modelling of UV intensity: Application to collimated-beam reactors and continuous-flow systems

被引:116
作者
Blatchley, ER
机构
[1] Environ. and Hydr. Engineering Group, School of Civil Engineering, Purdue University, West Lafayette
关键词
collimator; disinfection; kinetics; line source integration; photoreactor; power; ultraviolet;
D O I
10.1016/S0043-1354(97)82238-5
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
When properly designed, collimators can be used to develop a source of electromagnetic radiation which is uniform and easily quantified. A collimator design is presented which minimizes reflection and promotes the development of a well-behaved, quantifiable radiation source. The design of the collimator is optimized by use of a numerical model, line source integration (LSI), a continuous version of the widely used point-source summation technique. The LSI model is used to quantify the radiation intensity field from a collimator which incorporated a standard low-pressure mercury are lamp as its source of radiation. A method of measuring lamp output power is also demonstrated which employs experimental measurements of intensity through a collimator and the LSI model. The physical meaning of this measurement, its limitations and potential applications are discussed. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:2205 / 2218
页数:14
相关论文
共 20 条
[11]  
Jagger J., 1967, Introduction to Research in Ultraviolet Photobiology
[12]   PHOTOLYSIS OF CHLOROFORM AND OTHER ORGANIC-MOLECULES IN AQUEOUS TIO2 SUSPENSIONS [J].
KORMANN, C ;
BAHNEMANN, DW ;
HOFFMANN, MR .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1991, 25 (03) :494-500
[13]  
Kruithof J.C., 1992, J WATER SRT AQUA, V41, P88
[14]  
OPPENHEIMER J, 1994, COMP STUDY UV CHLORI
[15]   DEGRADATION OF CHLOROFORM BY PHOTOASSISTED HETEROGENEOUS CATALYSIS IN DILUTE AQUEOUS SUSPENSIONS OF TITANIUM-DIOXIDE [J].
PRUDEN, AL ;
OLLIS, DF .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1983, 17 (10) :628-631
[16]   BIOASSAY AND DOSE MEASUREMENT IN UV DISINFECTION [J].
QUALLS, RG ;
JOHNSON, JD .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1983, 45 (03) :872-877
[17]  
SEVERIN BF, 1984, J WATER POLLUT CON F, V56, P881
[18]   KINETIC MODELING OF UV DISINFECTION OF WATER [J].
SEVERIN, BF ;
SUIDAN, MT ;
ENGELBRECHT, RS .
WATER RESEARCH, 1983, 17 (11) :1669-1678
[19]   COMPARISON OF 3 LABORATORY DEVICES FOR UV-INACTIVATION OF MICROORGANISMS [J].
SOMMER, R ;
CABAJ, A ;
SCHOENEN, D ;
GEBEL, J ;
KOLCH, A ;
HAVELAAR, AH ;
SCHETS, FM .
WATER SCIENCE AND TECHNOLOGY, 1995, 31 (5-6) :147-156
[20]  
von Sonntag C., 1992, J. Wat. SRT-Aqua, V41, P67