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http://indianaquariumhobbyist.com/community/ :: View topic - Cheap, extreeeeeemy efficient DIY Chiller
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Cheap, extreeeeeemy efficient DIY Chiller
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Severumkid
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PostPosted: Thu Jul 17, 2008 2:33 pm Post subject: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 While  surfing  the  net,  I  came  upon  this  page...
 
 Wonderful  link.  http://www.killies.com/forum/viewtopic.php?t=1069
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aquaboy
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PostPosted: Thu Jul 17, 2008 2:47 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 Cost  Effective,  he  wants  a  spare  fridge.
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Seetharam
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PostPosted: Thu Jul 17, 2008 2:56 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 Hey  Deb
 
 Nice  Link,  a  very  nice  DIY  Setup,  But  this  DIY  is  definitely  not  Cost  effective!!!,  it  would  be  more  economical  to  use  cooling  fans.
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Tirtha C
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PostPosted: Thu Jul 17, 2008 3:46 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 If  you  have  a  dry  weather,  cooling  DC  fan  is  the  best  option.  
 
 This  summer  in  Gurgaon,  when  the  outside  temparature  was  arround  40degree  and  tank  temp  was  30,  my  nano  temp  was  fixed  to  26  degree  with  a  single  cooling  fan.  Top  of  that,  I  have  52watt  CFL  Boom  set  1"  above  the  water  surface.
 
 The  only  problem  using  a  fan  in  a  dry  weather  is  very  high  evaporation.  Everyday  I  have  to  top  up  the  tank  1-2".  
 
 
 Another  DIY  chiller  concept  is  using  Peltire  plates.  Not  sure  if  anyone  tried  it  here  or  not.
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Kaushik
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PostPosted: Thu Jul 17, 2008 4:04 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 Dear  Debarghya.
 Everybody  saying  its  a  nice  DIY  stuff  but  nobody  even  the  author  himself  not  expalining  in  which  principles  or  mechanism  it  is  working?Seeing  the  photos  seems  to  be  compressed  gas  in  Pvc  pipes  but  where  is  the  compressure?Confused
 Regards
 Kaushik
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srohit
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PostPosted: Thu Jul 17, 2008 4:31 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 If  I  remember  the  article  correctly,  the  PVC  pipes  are  basically  running  water  across  the  tank.  The  water  is  getting  cooled  inside  the  fridge.  There  is  no  compressed  gas  in  the  pipes,  just  the  basic  heat  transfer  across  using  water.
 
 Perhaps  somebody  can  try  it  locally.  Bar  fridges  are  not  so  common  in  India,  and  I  think  he  must  have  a  generous  wife  too  who  can  let  drilling  inside  the  house  fridge  for  an  aquarium  Wink  
 
 
                                                 
Kaushik  wrote  (View  Post):                
Dear  Debarghya.
 Everybody  saying  its  a  nice  DIY  stuff  but  nobody  even  the  author  himself  not  expalining  in  which  principles  or  mechanism  it  is  working?Seeing  the  photos  seems  to  be  compressed  gas  in  Pvc  pipes  but  where  is  the  compressure?Confused
 Regards
 Kaushik                
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Tirtha C
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PostPosted: Thu Jul 17, 2008 5:10 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 Koushik  Da....  there  is  no  compressed  Gass  in  those  PVC  pipes.  The  design  of  that  chiller  is  simple  enough.  Let  me  explain  the  design.
 
 In  a  Deep  Fridge  keep  a  Plastic  tub  filled  with  water.  Then  put  a  long  plastic  pipe  coil  into  that  water.  One  end  on  the  pipe  will  be  connected  to  a  output  powerhead  from  aquarium.  And  the  other  end  of  the  pipe  simply  going  to  return  the  water  back  to  tank.  
 
 That  means  Power  head  is  pumping  out  the  water........  it's  travelling  through  the  plastic  pipe  and  returning  back  to  tank.  
 
 Now  see....  this  pipe  coil  is  there  in  the  water  filled  tub  in  Deep  Fridge.  The  water  in  the  tub  becoming  chilled  nearer  to  zero  degree.  One  powerhead  is  there  to  circulate  the  tub  water  continuously  to  avoid  the  water  becoming  ice.  When  the  tank  water  is  passing  through  the  coil  it's  becoming  cold  as  the  outside  water  is  near  about  zero  degree.  Keep  running  the  water  for  2-3  hours,  you  will  be  able  to  lower  the  temp  of  the  tank.
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Severumkid
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PostPosted: Thu Jul 17, 2008 6:46 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 hmm,  I  need  a  used  spare  nano  fridge....
 
 Can  some  one  in  IAH  help  me  with  that?   Chuckle
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Preeths
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PostPosted: Thu Jul 17, 2008 7:20 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 I  actually  saw  a  10ltr  car  fridge  at  the  exibition  in  hotle  grand  ashok  previous  sunday  (13/7/0Cool.  corporate  gifts  exhibition.  works  on  220V  mains  or  car  battrey.  costs  about  2500.  this  i  think  can  be  used  to  make  a  diy  chiller.
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Severumkid
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PostPosted: Thu Jul 17, 2008 8:22 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 Hey  preetam,  which  made  is  that?
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Perikaruppan
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PostPosted: Thu Jul 17, 2008 9:33 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 hi  guys...
 Have  taked  with  a  friend  of  mine  who  tried  the  DIY  fridge  method.  No  Success.
 
 You  can  attempt  this  method  on  two  reasons:
 1.  if  your  tank  is  less  than  200  ltrs  of  water.
 2.  If  the  ambient  temp  around  the  tank  is  not  very  high.  i.e.,  around  29-30..  not  talking  about  city  temp  @  40-42  ...  but  room  temp.
 
 The  most  important  factor  that  needs  to  be  looked  into  is  how  much  temp  is  being  added  on  a  daily  basis  to  the  water,  that  is  if  the  water  is  currently  @  27  C  in  the  morning  and  after  lights  on  @  night  is  @31  then  there  is  4  Degrees  add  to  the  water  on  a  daily  basis...
 and  if  u  want  to  maintain  a  constant  temp  @  26,  then  u  need  a  5  degree  drop.  (26-31)...  
 
 There  are  some  BTU  calculations  that  help  a  lot  ...  have  left  it  some  where,  will  locate  it  and  re-post  it...
 
 but  to  cut  it  short,  this  wont  work  in  medium  or  larger  tanks  above  200  ltrs.  
 
 Pk


Last edited by Perikaruppan on Thu Jul 17, 2008 9:37 pm; edited 1 time in total
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natbox
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PostPosted: Thu Jul 17, 2008 9:36 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 i  think  that  is  really  an  excellent  idea...i  have  already  seen  this  on  APC(  i  think  so).....i  feel  the  same  compared  to  the  cost  of  commercial  chillers...
 moreover  one  can  get  a  second  hand  fridge  for  about  1k-2k....would  love  to  try  as  soon  as  i  start  working  and  earning  some  cash....  Thumb Up


Last edited by natbox on Thu Jul 17, 2008 9:43 pm; edited 1 time in total
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natbox
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PostPosted: Thu Jul 17, 2008 9:38 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 what  an  idiot  i  am  ..did  not  go  through  the  whole  link  before  posting  ......  ROFL
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Tirtha C
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PostPosted: Thu Jul 17, 2008 9:50 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 This  process  can  be  much  more  effective,  if  someone  can  use  copper  pipe  coil  instead  of  the  plastic  pipes.  And  length  of  the  coil  inside  the  fridge  is  the  key  of  success  in  this  process.
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nash81
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PostPosted: Thu Jul 17, 2008 10:18 pm Post subject: Re: Cheap, extreeeeeemy efficient DIY Chiller Reply with quote

 Plastic  pipes  may  be  for  salty  setups  !!  ..copper  is  a  strict  no  no.
 
   I  have  used  Peltiers  in  nano  tanks.  However  the  issue  or  rather  the  functioning  of  the  peltier  is  better  the  more  cooler  you  can  keep  the  heat  side.  They  however  cant  be  used  for  large  setups.  Also  temperature  control  becomes  an  issue.  The  peltier  gets  cold  really  fast  and  vice  versa.
 
 Incase  u  want  to  experiment  tirtha  bro  i  have  a  few  peltiers  lying  spare  un-used.
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