EFFECT OF DRIVE HEAD AND AIR CHAMBER VOLUME TO HYDRAULIC RAM PUMP PERFORMANCE AT DELIVERY HEAD 3,5 M Indra Herlamba Sre!ar", M#$%ammad S&'(an) 1,2
Fluid Mechanics Laboratory of State University of Surabaya Ketintang Street Surabaya, Indonesia Email 1indra!adsite2""#$ya indra!adsite2""#$yahoo%com hoo%com,, 2 mu&hammad%sof'an$gmail%com
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In+r&d#+&n
ecent ecently ly,, as global global-sc -scale ale (roblem (roblems, s, such such as global global 'arming 'arming and desertification, have attracted attention, the im(ortance of future environmental (reservation has been em(hasi.ed e m(hasi.ed 'orld'ide, and various measures have been (ro(osed and im(lemented% In the field of energy- and life-related technology, a variety of fluid machines (lay an im(ortant role in the infrastructure of society, and more energy-saving and resource-saving machinery 'ill be needed /10% ydraulic ram (um(s effectively use the 'ater hammer (henomenon, 'hich im(oses a (roblem in fluid (i(eline net'or&s including (um(s, and allo' fluid trans(ort 'ithout drive sources, such as electric motors% )hey have been (ro(osed and made in i n various si.es and configurations, mainly for educational (ur(oses /10, /20, /0% In addition, the results of e*(eriments that e*amined the effectof the geometric form of 'ater hammer (um(s by varying the length and angle of the drive (i(e, the 'ater level in the 'ater tan&, and the 'eight and lift of the drain valve have been re(orted /30, /+0% 4 (a(er has also been (ublished anal y.ing the 'ater 'ater hammer hammer (henom (henomeno enon n numeri numerical cally ly by using using the charac character teristi isticc curve curve meth method od for for com( com(ar ariso ison n 'ith 'ith e*(e e*(erim rimen enta tall resu result ltss /#0% /#0% o'e o'eve ver, r, thes thesee conventional studies have not fully evaluated the (um( (erformance in terms of (um( head and flo' rate, common measures indicating the (erformance of (um(s%
5ith this being the situation, as a first stage for the understanding of 'ater hammer (um( (erformance in com(arison to the characteristics of ty(ical turbo (um(s, the (revious study /60 e*(erimentally e*amined ho' the basic hydrodynamic characteristics 'ere affected by the inner diameters of the drive and lift (i(es, the form of the air chamber, and the angle of the drive (i(e, 'hich are believed to be re(resentative geometric form factors of 'ater hammer (um(s% Focusing on the behavior around the drain valve affecting the characteristics of 'ater hammer(um(s, the (revious study alsoclarified the effect of the length of the s(ring attached to the drain valve /70%
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S+0le and F&rma++n!
50 40 30 Vac = 2,4 litre
Hidram Pump Ef (%) 20
Vac = 2,8 litre Vac = 3,2 litre
10 0 1.5
1.7
1.9
Drive Head (m)
80 70 60 50
Beat per Minute
40
2,4 litre
30
2,8 litre
20
3,2 litre
10 0 1.5
1.6
1.7
1.8
Drive Head
1.9
2
7 6 5 4 Vac = 2,4 litre
Qd (l/min) 3
Vac = 2,8 litre 2
Vac = 3,2 litre
1 0 1.5
1.6
1.7
1.8
1.9
2
Drive Head (m)
)able 1% E*(erimental factors of hydraulic ram (um( 8eometrical form factor
E*(erimental
9rive :i(e
9rive ead
9elivery :i(e 9elivery ead
4ir ?hamber
Inner diameter ;mm< Length L ;m< 4ngle = ;>< ead ;m< Inner diameter ;mm< Length L ;m< ead h ;m< eight ;mm< Inner diameter ;mm<
Figure %2 4ir ?hamber
3
N&menla+#re 2' nee**ar0
condition 2+%3 3 22%+ 1%+
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2
12%6 % ,+ ""
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/10
Saito, Sumio%, )a&ahashi, Masaa&i%, Cagata, oshimi%, Effects of the 4ir olume in the 4ir ?hamber on the :erformance of 5ater
ammer :um( System, International Gournal of Fluid Machinery and Systems, ol% 3, Co% 2, 4(ril-Gune 2"11% /20
Engineers, Series H, ol% 6#, Co% 6#6, 2"1"-6, ((% 1"271"3%Sutasurya, L%4%, andoDo, 4% iyanto, H%, Title of book , 2 nd ed%, :ublisher, +-1", 1BBB% ;Hoo&<
/0
5illiams, G%, Name of aper , Came of Hoo&, Came of the editor;s< ;ed;s<%<, :ublisher, ((% #6-#B, 2""1% ;Hoo& 'ith (a(er title and editor<
/30
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