Pro/Forums - View Single Post - Single vs. two-pass heater core

fvr · 10-02-2003, 01:36 AM

Gooserider, is you air intake right next to your hot air outlet? I didn't quite understand that part. Anyway, I was wondering why more car manufacturers don't use SP heater cores.

I'm thinking about getting two 9.5"x6"x2" heater cores and constructing a 9.5"x6"x4" single pass radiator. Two 120mm fans will pull the cold air through it into the case (26" Dragon). I know it's not a good idea to increase case temperatures, but I'd rather have my water cold the my case cool.

Also, I think it would be better to connect the two heater cores in parallel and set them apart or run high CFM fans for the setup I described above. Unfortunately, I just don't have the room for two huge heater cores to be placed separately. Basically speaking, I'm loosing efficiency due to lower dT(air) in a 4" thick heater core. (Part of the HC where the air exits or is about to exit will be less efficient.) Moreover, efficiency will further be lost since two HCs have higher airflow resistance. What I’m saying is that there are many factors that have to be considered.

10-02-2003, 01:36 AM	#4
fvr Cooling Neophyte Join Date: Sep 2003 Location: Canada Posts: 5	Gooserider, is you air intake right next to your hot air outlet? I didn't quite understand that part. Anyway, I was wondering why more car manufacturers don't use SP heater cores. I'm thinking about getting two 9.5"x6"x2" heater cores and constructing a 9.5"x6"x4" single pass radiator. Two 120mm fans will pull the cold air through it into the case (26" Dragon). I know it's not a good idea to increase case temperatures, but I'd rather have my water cold the my case cool. Also, I think it would be better to connect the two heater cores in parallel and set them apart or run high CFM fans for the setup I described above. Unfortunately, I just don't have the room for two huge heater cores to be placed separately. Basically speaking, I'm loosing efficiency due to lower dT(air) in a 4" thick heater core. (Part of the HC where the air exits or is about to exit will be less efficient.) Moreover, efficiency will further be lost since two HCs have higher airflow resistance. What I’m saying is that there are many factors that have to be considered. Last edited by fvr; 10-02-2003 at 01:46 AM.