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http://indianaquariumhobbyist.com/community/ :: View topic - Chiller Sizing Query
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Chiller Sizing Query

 
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nytyn
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PostPosted: Sat Jun 05, 2010 10:51 am Post subject: Chiller Sizing Query Reply with quote

 All  other  equipment/parameters  being  equal,  if  I  need  to  cool  a  1000  liter  tank,  what  would  be  the  difference  between  installing  a  chiller  rated  for  a  1200  liter  tank  and  installing  2  chillers  rated  for  a  650  liter  tank  at  opposite  ends?
 
 I  would  like  to  hear  inputs  on  pros  and  cons  of  both  installations.
 
 Thanks  in  advance  for  your  time!
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ks
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PostPosted: Sat Jun 05, 2010 1:54 pm Post subject: Re: Chiller Sizing Query Reply with quote

 If  it  is  marine  tank  with  a  sump  then  keeping  chillers  at  both  ends  will  not  serve  the  purpose
 
 For  a  1000ltrs  marine  tank,  i  utilize  one  single  chiller  rated  for  1200  ltrs  rather  than  using  two  chillers  at  opp  sides.
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Aquaholic
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PostPosted: Sat Jun 05, 2010 2:24 pm Post subject: Re: Chiller Sizing Query Reply with quote

 Hi  Nitin,
 
 Using  two  Chillers
 
 Pros  -  None
 
 Cons  -  Extra  equipments/expenses  and  power  consumption  going  through  the  roof.
 
 For  eg:
 
 If  you  are  using  Hailea  chiller,  you  need  two  HC-  250A  chillers  with   specifications  -
 1/6  HP  compressor,  chilling  capacity  upto  600  L  and  the  power  consumed  is  1.3A  +  two  pumps  with  a  minimum  flow  rate  of  1400  L/Hr  each.  
 
 If  you  use  only  one  Chiller,  HC-  500A  with  specifications  -  1/2  HP  compressor,  chilling  capacity  upto  1200L  and  power  consumption  2.4A  +  one  pump  with  a  minimum  flow  rate  of  2000L/Hr.
 
 Cheers
 
 Vince
 
 PS:  This  where  i  wanted  to  post  :-)
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nash81
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PostPosted: Sat Jun 05, 2010 2:38 pm Post subject: Re: Chiller Sizing Query Reply with quote

 Hi,
 
 I  think  in  terms  of  efficiency,  power  consumption,  the  overall  price  of  the  chiller  itself,  you  will  be  benefited  by  one.  Not  to  mention  the  space  save  as  well.  Also  running  two  chillers  needs  two  pumps,  now  each  pump  will  generate  more  heat.  You  can  rather  use  one  pump  and  which  may  not  generate  as  much  heat  as  running  2.
 
 Warm  Regards
 Nirav  Shah
 Indiapetstore.com
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nytyn
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PostPosted: Sat Jun 05, 2010 11:25 pm Post subject: Re: Chiller Sizing Query Reply with quote

 @ks,  yes  I  am  talking  marine!
 
 @  aquaholic,  expenses  and  space  not  a  constraint.  
 
 @nash81,  I  am  actually  looking  at  a  5000  liter  marine  reef  setup.  Costs,  initial  and  running  absolutely  no  issues.  End  result  is  what  I  need.
 
 Any  suggestions  on  the  best  way  to  chill  a  5000  liter  reef?
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Aquaholic
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PostPosted: Sun Jun 06, 2010 1:07 am Post subject: Re: Chiller Sizing Query Reply with quote

 In  that  case  go  for  Aqualogic  multi  temp  chiller,  Oceanic  Systems  Chiller  or  TECO.
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nash81
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PostPosted: Sun Jun 06, 2010 12:00 pm Post subject: Re: Chiller Sizing Query Reply with quote

 Hi
 
 From  my  experience  in  installing  large  marine  tanks,  I  have  been  best  satisfied  with  Teco,  its  Low  on  power  consumption,  Super  Quiet  and  claimed  Vs  actual  does  match.  Compressor  parts  are  available  and  easy  to  maintain.  A  good  Refrigeration  technician  should  be  able  to  handle  it  as  well  post  your  warranty  period.
 
 Warm  Regards
 Nirav  Shah
 Indiapetstore.com
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Madan
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PostPosted: Sun Jun 06, 2010 1:09 pm Post subject: Re: Chiller Sizing Query Reply with quote

 Nytyn,  2  Chillers  -  Trouble  -  No  two  thermostats  are  calibrated  exactly.
 
 One  will  keep  on  running  more  than  the  other,  maybe  continuously,  the  other  one  will  cut  in  and  cut  out  or  never  cut  in  and  cut  out.
 Big  headache.
 
 The  best  solution,  put  in  a  chiller  of  higher  rating  than  the  tank  capacity.
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ks
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PostPosted: Mon Jun 07, 2010 1:26 pm Post subject: Re: Chiller Sizing Query Reply with quote

 For  a  5000  ltrs  reef  set  up,  its  better  to  go  for  DIY  chiller.  I  think  there  was  a  post  by  PK  on  this.  Also  you  can  refer   reef  central  for  DIY  chillers.  It  is  very  effective  for  larger  tanks  (more  than  1000  ltrs)  and  can  be  safely  placed  far  away  from  your  DT.
 
 IMO  the  disadvantages  of  the  standard  chillers  over  DIY  ones  are  :
 
 1)  Additional  expenses  involving  installation  of  external  thermostats  -  there  has  always  been  a  difference  in  temp  (close  to  1*C)  between  the  tank  temp  &  what  is  indicated  in  the  display  of  the  standard  chillers  regardless  of  the  make.  Totally  depending  on  the  temp  reading  displayed  on  these  type  of  chillers  is  not  going  to  serve  the  purpose.  I  have  a  standard  teko  chiller  but  still  i  am  contemplating  of  installing  an  external  thermostat.  
 
 2)  Morever  these  chillers  are  designed  to  work  at  an  ambient  temp  of  30*  C  and  less.  In  peak  summer  the  temp  hovers  between  38  to  40*C.  So  you  need  to  install  an  AC  unit  to  bring  down  the  ambient  temp  and  to  make  the  chiller  work  more  efficiently.  
 
 3)  The  heat  generated  by  these  higher  capacity  chillers  should  also  be  taken  into  consideration.
 
 KS
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Perikaruppan
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PostPosted: Mon Jun 07, 2010 4:03 pm Post subject: Re: Chiller Sizing Query Reply with quote

 First  and  foremost  the  Haliea  HC  250  only  cools  250ltrs  of  water  and  HC500  does  cool  only  upto  500ltrs,  that  too  struggles  to  maintain  temperature  here  in  chennai  during  summer.   This  is  as  per  my  experience  and  as  per  the  rating  on  the  manuals  of  those  chillers.
 
 Taking  into  consideration  the  place  where  you  live  in,  if  coimbatore,  then  i  think  you  will  for  sure  need  a  1.5  HP  chiller  to  cool  the  1200ltr  tank.  Cuz  even  a  1HP  chiller  chills  only  900  or  so  litres  of  water..  and  taking  into  consideration  the  amount  of  heat  into  the  marine  tank  with  the  various  pumps  and  lights,  you  need  defintely  twice  the  rating  of  these  chillers.
 
 For  the  larger  tank  through  out  the  world  in  all  aquarium  shops  that  i  have  visited  are  using  the  DIY  Coil  Chiller  using  the  A/c  as  it  is  far  far  more  efficient  and  does  a  freaking  wonderful  job,  plus  replacements  are  not  a  problem  at  all.
 
 so  for  your  5000ltr  tank,  i  would  say  without  the  DIY  you  would  be  stranded  using  the  Market  available  chillers.
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