04049nas|a2200421 i 4500 20260817162441.0 040430s2003 th u m rtt 00| a1eng d .b11924184 AIT RSPR no. EV-03-8 Wittaya Samsuwan Analysis of the 2003 water-distribution system by the EPANET model to serve the Amphur Muang area, Surathani Pathum Thani, Thailand : Asian Institute of Technology, 2003 54 leaves Research studies project report ; no. EV-03-8 A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering (Executive). The PW A is conducting standard quality water; sufficient delivery pressure and extensive coverage of the supply for maintain customer's satisfaction. The customer's satisfaction study is exploring a wide variety of possible factors. Therefore, the author is developing a water-distribution model using the EP ANET software to assist with assessment in the customer's satisfaction study. The results are showing the percentage of water contributed by specific locations in the Amphur Muang area, Suratthani for 2003 conditions. Initially the model was calibrated using the present-day (2003) data collected during summer-demand conditions of April 2003. The model network consists of 1,567 pipe segments ranging in diameter from 100 millimeters (mm) to 900 mm, and 1,434 junctions (nodes). The absolute difference between measured and simulated hourly average pressures for all measurement locations ranges between 0.2-11.9 mwc. The medium pressure differences support the assertion that the model is well calibrated. Besides, it shows a reliable representation of water-distribution system conditions during 2003. In addition, a simulation of the transpott of residual chlorine was conducted and compared with experimental data gathered at 25 discharge points of the water distribution system for April, 2003. A measured concentration of chlorine range was between 0.3-0.5 milligrams per liter (mg/l). The comparison indicates a difference within the range of 0.01- 0.12 mg/l or a mean relative difference of 15.59% with a range of 2-25%. Basically, the model indicates a slightly under prediction. However a correlation coefficient of 0.56 indicates a medium correlation between measured concentrations and simulated values. Therefore, this water-quality simulation is confirming that the model is reasonably calibrated and an acceptable representation of the present-day water-distribution system characteristics. Water Thailand Surat Thani Distribution Thammarat Koottatep, Chairperson Samorn Muttamara, Examination Committee Preeda Pakpian, Examination Committee Provincial Waterworks Authority, Eastern Water Resources Development, Scholarship donor Management Public Company Limited, Scholarship donor Asian Institute of Technology Fellowship, Scholarship donor Asian Institute of Technology. Research studies project report ; no. EV-03-8 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B08405 .b11924184 mnait u 240417 0 040430 m a u 0 mnait mnait mnarc 20 40 Barcode : 30050120613921 CREATED : 2004-04-30 RECORD # : i12393721 LPATRON : 1029250 LCHKIN : 2019-08-19 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 3 TOT RENEW : 3 Barcode : 30050120613939 CREATED : 2004-04-30 RECORD # : i12393733 LPATRON : 1019739 LCHKIN : 2008-08-10 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 5 TOT RENEW : 4 Barcode : 30050120220347 CREATED : 2016-01-04 RECORD # : i12920411 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 5067 5067 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT RSPR no. EV-03-8 30050120613921 2026-08-17 16:24:41 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT RSPR no. EV-03-8 30050120613939 2026-08-17 16:24:41 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT RSPR no. EV-03-8 30050120220347 2026-08-17 16:24:41 2026-08-17 40