Darko66
Well-Known Member
- Thread starter
- #46
Exhaust explanation
First, thinking about this made me realize something. I never reinstalled the plastic insert back into my seat. So, those of you installing the attachment or having already installed it, might want to leave it out. There's a chance it might obstruct the hot exhaust air exiting the seat albeit only slightly.
Okay, I'm not saying that having a directly connected exhaust isn't a good idea. My attempt at it was flawed, but I assume Seatguru's take on it doesn't suffer the same issues. There are two issues with the exhaust - heat accumulation and the fact that the exhaust blows right next to the tube taking the cold air to the seat. A properly working exhaust system should be able to greatly improve performance.
However, by drawing air from outside the seat and taking advantage of the A/C and the floor vents, the exhaust issues can be somewhat overcome.
I'm going to try and explain this. I apologize if it just sounds like a lot of babble.
My experience might be different because our seats are different. I don't know anything about the F150 seats, so they might not have the perforated material section that we have. Although this material isn't as breathable as it should be, it does allow a path for air to escape the inside of the seat.
As originally designed by Ford with the air being drawn from within the seat, the hot exhaust isn't under pressure so it doesn't get forced out. In fact, because the blower splits the air with half going out the front of the seat and half exiting as exhaust inside the seat, air had to be drawn into the seat to equalize the pressure. The seat does not do this very well.
Once you begin drawing air from outside the seat, you increase the air pressure inside the seat. This pressure forces the hot exhaust out via the perforated areas or any other crevice it can. This exhaust is being replaced by new exhaust though, so it's necessary to feed the blower cold air so you can push the exhaust temperature down. This is why it's necessary to divert at least some of the cold A/C to the floor vents, especially when the vehicle is starting out hot. As the vehicle cools and the TED temp drops, the exhaust from the blower goes from being hot to just being warm. Although this warm air does have a negative impact, the overwhelming factor is the intake air temperature. As long as it stays cool, the blower will continue to blow cold air. I haven't had any issues with the blower being able to continue blowing cold over an extended period of time.
First, thinking about this made me realize something. I never reinstalled the plastic insert back into my seat. So, those of you installing the attachment or having already installed it, might want to leave it out. There's a chance it might obstruct the hot exhaust air exiting the seat albeit only slightly.
Okay, I'm not saying that having a directly connected exhaust isn't a good idea. My attempt at it was flawed, but I assume Seatguru's take on it doesn't suffer the same issues. There are two issues with the exhaust - heat accumulation and the fact that the exhaust blows right next to the tube taking the cold air to the seat. A properly working exhaust system should be able to greatly improve performance.
However, by drawing air from outside the seat and taking advantage of the A/C and the floor vents, the exhaust issues can be somewhat overcome.
I'm going to try and explain this. I apologize if it just sounds like a lot of babble.
My experience might be different because our seats are different. I don't know anything about the F150 seats, so they might not have the perforated material section that we have. Although this material isn't as breathable as it should be, it does allow a path for air to escape the inside of the seat.
As originally designed by Ford with the air being drawn from within the seat, the hot exhaust isn't under pressure so it doesn't get forced out. In fact, because the blower splits the air with half going out the front of the seat and half exiting as exhaust inside the seat, air had to be drawn into the seat to equalize the pressure. The seat does not do this very well.
Once you begin drawing air from outside the seat, you increase the air pressure inside the seat. This pressure forces the hot exhaust out via the perforated areas or any other crevice it can. This exhaust is being replaced by new exhaust though, so it's necessary to feed the blower cold air so you can push the exhaust temperature down. This is why it's necessary to divert at least some of the cold A/C to the floor vents, especially when the vehicle is starting out hot. As the vehicle cools and the TED temp drops, the exhaust from the blower goes from being hot to just being warm. Although this warm air does have a negative impact, the overwhelming factor is the intake air temperature. As long as it stays cool, the blower will continue to blow cold air. I haven't had any issues with the blower being able to continue blowing cold over an extended period of time.
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