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008 160321s2013 th u m rtt 0 a eng d
035 _a.b12162759
099 9 _aAIT Thesis no.WM-13-20
100 0 _aNguyen Minh Vuong
245 1 0 _aAnalysis of climate change impact on rainwater harvesting in South Central coast of Vietnam
260 _aPathum Thani :
_bAsian Institute of Technology,
_c2013
300 _a 52 leaves :
_bill.
490 1 _aThesis ;
_vno. WM-13-20
500 _aA thesissubmitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management
502 _aThesis (M. Eng.) - Asian Institute of Technology, 2013
520 _aThe increase of population and climate change has placed additional burden on water supply systems which is already under stress. Under that circumstance, rainwater harvesting, a sustainable water source, is increasingly drawn attention as vitalsources inprovision of water. Effects of climate change on hydrological cycle and precipitation distribution will ultimately impact on performance of the system, which must be taken into account for necessary adaptation measuresin design and applications.Firstly, two non-parametric test namely Mann-Kendall and Sen{u2019}s slope were applied for investigation on historical trend of temperature and precipitation. The study showed significant increasing trend of max and minimum temperature is recorded over all stations with approximately rate of 0.3 degree per decade. Although trend of precipitation is not significant throughout the region, two among nine studied stations show significant increasing trend, by contrast there is one station with significant decreasing trend. Secondly, through employment of bias correction techniques on PRECIS Regional Climate Model, it is expected that there is a2-5%increase of total annual rainfall during the period of 2021-2040 & 2041-2060 compared to those of the observation. A decrease on average annual number of strong and heavy day is presented. However, there is significant increase on maximum dry spell from 30-45 days average, which equivalents to an increase of 50-100%of maximum dry durationofthe observation period. Performance of rainwater harvesting is simulated using behavior model underthree different climatic conditions. Development of demand-storage-reliability relationshipreveals that 100% annual reliability can be achieved in humid climate cities. Analysis on future performance of rainwater harvesting shows a reduction of 5-8 % of annual reliability of the system, which should be considered in planning of future rainwater harvesting. Analysis on change of tank storageand/orroof area so as to maintain the system{u2019}s reliability over time was conducted. The result showedthat an increase of 10% roofarea will not only considerably reduce the necessary adjustment of tank storage compared to those of changing tank or roof area only, but also reduce from 15-60% of storage requirement to the observation period.
650 0 _aClimatic changes
_zVietnam
650 0 _aRainwater
_zVietnam
700 1 _aBabel, Mukand Singh,
_eChairperson
700 1 _aShrestha, Sangam,
_eExamination Committee
700 0 _aSutat Weesakul,
_eExamination committee
710 2 _aDeutscher Akademischer Austausch Dienst (DAAD),
_eScholarship donor
710 2 _aAIT Fellowship,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. WM-13-20
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B04374
907 _a.b12162759
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_cz
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998 _b0
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962 _a000:001:PDF:b1216275:002451:0:0:0:0:0:0
_tAbstract--AIT Thesis no.WM-13-20
_vn
945 _lmnait
945 _lmnait
945 _lmnarc
942 _c20
942 _c40
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