Big Block Water Pump

Heating, Cooling & AC

  1. Mike67

    Mike67 Well-Known Member

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    He is correct, that in order to get the designed efficiency for exchange rates, the system relies on time/volume and temp calculation.
    The flow can be too fast, but that is also what the tstat helps to do by restricting the flow.
     
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    • moparnation74

      moparnation74 FBBO Gold Member FBBO Gold Member

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      Simple premise of why you use a thermostat......

      Also why we have different row/size radiators....

      Also another most forget about the metals.....

      Lots of things are used in these closed systems for aiding in maximum heat exchange......
       
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      • RJRENTON

        RJRENTON FBBO Gold Member FBBO Gold Member

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      • RJRENTON

        RJRENTON FBBO Gold Member FBBO Gold Member

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        My original message did not post correctly....to this end, to continue my thoughts.....
        To the person that commented about coolant flow being too fast....i invited him to provide calculations to support his premise....not guess. Thermodynamics is an exact science and all factors can be substantially proven with calculations...its sad that sometimes "seat of the pants" comments influences a decision. One fundamental fact is velocity and specific heat of the fluid being exchanged are important considerations. The other aspect is the approach temps of the two fluids involved (yes...air is a fluid) and the greater the LMTD (log mean, or average of the temps involved ), the greater the heat that will be exchanged. To those that fret when the coolant temps exceed 200 degrees F, they should remain calm (pun intended) and they should realize that cooling 200 degree water with 100 degree air is difficult unless the heat exchanger surface area is 2x the area of the existing radiator. There are many different factors that are involved. In another lifetime, i did heat exchanger calculations for both liquid to liquid, liquid to air and air to air and velocity, surface area, and temperatures and specific heat values are major factors. Remember....the next door's neighbors cousin's, brother in law's buddy's is not the definitive authority.....always ask for calculations to substantiate their claim to what they are proposing. But this just my opinion....
        Bob Renton
         
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        • Mike67

          Mike67 Well-Known Member

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          Im not sure who you are referring to maybe its me dunno? ...Its not seat of the pants therory... plate and frame exchangers ( same as a radiator) as well as tube and shell have formulas that satisfy the requirement and size. You are not the only one that worked w/ heatexchangers...
          There are also other factors like material exchange coefficients & fouling correction factors as well as entering and leaving temps for both media transfers....
          BUT.... the calcs will always be seat of the pants unless you know the exact design criteria for a 50 year old radiator or even a modern one. I don't believe I've ever seen a mfg publish BTU efficiency data....dont know if you could even get it...
          Don't know if you could even get the data for the fan or the pump...
           
        • moparnation74

          moparnation74 FBBO Gold Member FBBO Gold Member

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          Yeah...I am at loss here too.....Is he referring to me? His post above states he has invited, past tense....So since I never received an invite I guess it is not me either....

          I have no idea what calculations he wants? On an old part that there is no data on...

          Has anyone seen a thread where this has been asked?

          Weird....
           
        • RJRENTON

          RJRENTON FBBO Gold Member FBBO Gold Member

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          Plate and frame heat exchanger (Alpha Leval types), transfer heat across the plate from the heating/cooling media to the cooling /heating media and to my experience the flows are countercurrent. To get surface area, there are many plates connected in parallel. With O-rings providing fluid isolation. The drawback is pressure drops on both fluid circuits. Again velocity and specific heat characteristics is important was well temperature objectives. These hx are great for liquid to liquid service. Automotive radiators are liquid to air exchangers and the design criteria are similar but different....fluid flows and temperatures vary and so does air flow but not to the same extent. Alpha Leval has plug in programs to calculate the design criteria and help with the hx selection. The flowcooler pump is a great design and significantly improves the system operation....but this is just my opinion. Automotive cooling systems are parallel flow (air and fluid) and remember the hx surfaces are the fins...and the more fins per inch the better....the tubes only provide the fluid path from in to out. But, i fear that thermodynamics and fluid dynamics may be beyond the scope of most readers, so I'll just stop here.
          Bob Renton
           
        • HT413

          HT413 Semi Pro Bowler

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          My 440 source pump and housing work great.
           
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          • moparnation74

            moparnation74 FBBO Gold Member FBBO Gold Member

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            LOL.....would that be real world results? Can you provide calculations?
             
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            • HT413

              HT413 Semi Pro Bowler

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              Yep. Thus far I have a zero percent overheat rate. Calculated that all by myself.
               
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              • HT413

                HT413 Semi Pro Bowler

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                And believe it or not, this happened on the real world.
                 
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                • Mike67

                  Mike67 Well-Known Member

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                  :rofl::rofl::rofl:
                  To much!!! That inversely negative feeling you get when the proportional jubilation hits is infinite!
                   
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                  • moparnation74

                    moparnation74 FBBO Gold Member FBBO Gold Member

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                    • 67 GTX

                      67 GTX Well-Known Member

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                      Do all of you guys have a spring in your lower radiator hose?
                      I never saw my lower hose collapsing at all, and I don't have a spring in it.
                       
                    • moparnation74

                      moparnation74 FBBO Gold Member FBBO Gold Member

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                      I use one
                       
                    • HT413

                      HT413 Semi Pro Bowler

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                      I use one
                       
                    • 67 GTX

                      67 GTX Well-Known Member

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                      Do you guys buy ones specific for your car from anyway?

                      Or just a general one?
                       
                    • HT413

                      HT413 Semi Pro Bowler

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                      Nothing special, just google it and find one for your hose diameter. Alternatively if you have some wire laying around, just coil it around a pipe and stuff it in there!
                       
                    • not so famous bob

                      not so famous bob Well-Known Member

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                      If the posters water temp runs the same on the hiway as sitting at a stop light, I don`t give a crap about all those calculations, something ain`t right. And themostats were put in cars at the factory for a reason. I tried running w/o a stat yrs ago , on a 600 horse vega, ended up with flow restrictors in in to slow the water down, it had the biggest alum rad , w/ 1 1/4" cores , I could get in it too. People try to over figure too much !
                       
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