If you didn't want the answer to that question why did you ask it?Getting ready to install a new T-Stat. I have all of the parts to build a second water pump including an OEM cast iron impeller. My existing pump has had the bypass plugged and I could see wanting to replace the original bypass system at some point. Another question, with the available stamped impeller, anybody have any issues with them? Better, worse than the OEM design?
Well the part that might have confused you was in reference to the pump installed on a running engine, and any known or experienced issues, not the pump in a lab setting.If you didn't want the answer to that question why did you ask it?
Thats cool, the only problem I've ever seen with the stamped impeller pumps was corrosion due running straight water instead of 50/50,but they've been used for years and in most cases are adequate. In a rig that required max. cooling capacity given a choice I would choose the cast impeller.A compromise dose not necessarily dictate that it creates an issue in a particular application. As I'm sure you know, many refurbished, and new water pumps work well with a stamped impeller. That is why I asked this focus group who would know if a W block was effected by it. My compromise statement was double pronged, one is the cost to manufacture, the other is the design compromise comparo to the original.
I don't think I was snippy, blunt perhaps but not with any maliciousness intended.
No bad blood.
Sorry m = mass flow rate. Flow rate does matterThe general function of a heat exchanger is to transfer heat from one fluid to another.
Again, the laws/formulas that dictate the thermal capacity of a heat exchanger are known and available in your basic thermodynamics classroom book. In non of them does dwell time reverse the formulas outcome. Further more in no case will increasing the flow of heated fluid (decreasing its dwell time) reduce the total thermal transfer of heat energy. The system will eventually bottom out and not improve, but it will not start going the other way. You will only thermally saturate the cooling fluid to the point that it can no longer absorb anymore heat.
Example below:
You have two radiators with all variables the same with the exception of the volume/velocity of heated fluid flowing through the core, one is 50% the other is 100% of the systems capacity. In the 50% low example, the mean coolant temperature across the core is 150* the other 100% example is
example the mean coolant temperature is 195*. Which example will transfer more heat energy out of the system? The 100% flow example because the mean Delta T is greater between the two fluids is greater.
Sorry to preach but these are basic system fundamentals, and I'm fine if we agree to disagree, this won't change my initial question. Off to work and then out to the garage.
Is that Arabic???????Sorry m = mass flow rate. Flow rate does matter
Q = m.Cp. ΔTm
Is that Arabic???????