tarafied1
Well-Known Member
Okay, I am thinking of my car specifically but this stuff may apply to others. I have found a great article on Hot Rod's website...
http://www.hotrod.com/techarticles/cooling_system_tech/index.html
Basically what I read is:
What I believe I need is an aluminum two core/row radiator and a puller fan to improve my low speed cooling, right?
http://www.hotrod.com/techarticles/cooling_system_tech/index.html
Basically what I read is:
So what I understand is that I have the worst scenario for low speed cooling. I have a brass/copper 4 core radiator with an electric pusher fan. The pusher fan is at least 10% less efficient than a puller and some level less efficient than a mechanical fan. In addition the radiator itself is less thermal efficient than an aluminum radiator.- Mid-60s vintage radiators made of brass and copper typically fall in the 10- to 14-fin/inch category (low fin density)
- engine-driven fans with deep pitch-angle blades work best with low-fin-density radiators, while electric fans with shallow pitch-angle blades tend to work best with high-fin-density-count radiators.
- brass and copper radiators offer thermal conductivity advantages over aluminum radiators, they are limited to a maximum coolant tube diameter of 5/8 to ¾ inch.
- Aluminum radiators can be built with tubes up to 1-½ inches in diameter. The larger tubes allow the radiator manufacturer to place more fins-per-inch, which improves the radiators thermal efficiency. That reduces the thickness (and weight) of the radiator and also improves airflow through the radiator.
- For example, an aluminum radiator with two rows of 1-½-inch coolant tubes is probably more efficient than a four-row brass/copper radiator. Not only would the brass/copper radiator be heavier, but its added thickness would present a more restrictive path for the air to travel, especially at low vehicle and engine speeds.
- electric fans should always be mounted behind the radiator for optimal cooling. These fans do a better job of creating a low-pressure area behind the radiator than they do of pushing air through a radiator.
- Generally, engine-driven fans are more efficient than electric fans
What I believe I need is an aluminum two core/row radiator and a puller fan to improve my low speed cooling, right?