Quote:
Originally Posted by Orb
Justin
What you have been stating is very much a contradiction so I am asking for some details. I am not making judgment what was said but rather looking for the facts so I can decide if this is going to meet my requirements. I am not interested in drama or repeated statements. A basic specification regarding detailed tube and fin sizing would be appreciated. Thus, I would not need to ask questions.
The close mesh core (low pressure drop) is nothing more than a finer pitch radiator from the standard core. Please stop implying that it is something else and confusing people further! The OEM radiator is a finer pitch core at about 6.8 mm with 50 tubes so the purposed design (close mesh core) is almost the same pitch to the OEM radiator. It is certainly understandable why they are recommending this design, and for me, doesn’t require further explanation. The addition cost is justified due to 30% increase in materials required just to be clear.
The assumption that the air flow may be restricted is valid but it’s an assumption and has defiantly gone on a tangent. You have an OEM radiator so you know what the available air flow/restriction area. It is not going to be difficult to transfer the information over to a new design since we don’t have a fan curve. You also have coolant flow rate and OEM radiator that can be used to get the total coolant cross section which can be applied to the new design. We have enough information to create a design but it may be on the conservative side with good engineering judgment unless someone wants to invest further time and effort into this.
The comments from the engineer are just that, and he did not answer the question, but instead stated obvious information regarding heat flux, pressure drop and that dimpled tube was a possible option to meet coolant velocity but you seem to not understand this?
For others, if you on the fence about upgrading the radiator and hoping some other company can do it you will be disappointed. PWR is the only company that has specific technology and available material sizes to enhance thermal performance for at these low volumes. One of the reasons for this is that the OEM radiator is actually a fairly good unit for high production so improving up on this is not that easy of a job.
Some basic design info that is easy to understand: http://www.arrowheadradiator.com/14_...utomobiles.htm |
Hi Mark,
whilst I appreciate your continued interest in the product, I suggest you speak to PWR directly in effort to obtain the specific information you require.
They may or may not wish to disclose specific details regarding the design of their radiators, but it cannot hurt to ask.
Steve Bartlett my sales contact at PWR can be contacted on +61 (0)7 5547 1600 during business hours Monday to Friday.
Whilst Steve is quite knowledgeable, he said he would be happy to pass you onto a design engineer to respond to your questions, if you require further detail.
Cheers,
JD.