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A little nippy ...
John H wrote:
On Sun, 31 Dec 2017 20:52:15 -0500, Alex wrote: wrote: On Sat, 30 Dec 2017 20:53:36 -0500, Alex wrote: True North wrote: On Saturday, 30 December 2017 11:33:19 UTC-4, Mr. Luddite wrote: On 12/30/2017 10:10 AM, justan wrote: I like being warm. Short trips in cold weather used to be hard on a vehicles exhaust system. Not sure with the better quality stainless materials used today. I'd stay home and make my own coffee The exhaust system? Where did you read that? Yup that is true. If you looked at the old cars, you would see water dripping out of the tail pipe until it warmed up. If you never got it hot enough to boil out all the water it would start rusting from the inside out. Wouldn't condensation form even after a long trip when the car is turned off in cold temps? Yes, and here is the reason why: A gasoline (petrol) molecule is made up as such: C8H18 (or 8 Carbon atoms and 18 Hydrogen atoms) Energy is obtained from the combustion of it by the conversion of a hydrocarbon to carbon dioxide and water. The combustion of octane follows this reaction: 2 C8H18 + 25 O2 - 16 CO2 + 18 H2O Or better said, you have two of the hydrocarbon atoms along with 25 oxygen atoms, they swirl together into a mix, the spark plug ignites them, boom, and out the tail pipe comes 16 carbon dioxide molecules and 18 water molecules ... at least in a perfect world. Some cars don't put out exactly that ratio. There may be a little bit of carbon monoxide (CO), unburnt hydrocarbons (C8H18), and/or nitrogen oxide (NO2) coming out of the engine exhaust port along with the CO2 and H2O. In this case, the catalytic convertor's job is to help clean these up so you can get closer to the perfect ratio described above. As described, the water coming out of the tail pipe is a natural occurrence of the combustion process. You will usually see it coming out of the tail pipe when the engine and exhaust system of the vehicle is not completely warmed up. When it does become completely warmed up, you won't see it any more, because it comes out as steam (well, you'll see it in the winter time if it's cold enough, but you get the idea). Furthermore, if you believe I wrote the above from the top of my head, you must think I'm Harry. Interesting! |
A little nippy ...
On Tue, 2 Jan 2018 19:50:14 -0500, Alex wrote:
wrote: On Sun, 31 Dec 2017 20:48:51 -0500, Alex wrote: wrote: We always have the windows open if the AC isn't on and we usually have one of the 24" exhaust fans running on low. If both are on high I think we turn over the air in the house every few minutes. What kind of exhaust fans do you have? They are "Spartan"s that I believe is now handled by Grainger. The original owner bought them from a local place called Wickes RIP that was killed by the chains. All the paperwork came with the house along with the papers on everything else he ever bought. This is a 24" deal with a 2 speed motor, 1/4hp on high probably about 1/10 on low. and it will pop your ears if you don't have enough windows open. So it vents through the roof? Yup, soffit vents, ridge vents and gable end vents. I can move a lot of air. |
A little nippy ...
On 1/2/2018 9:03 PM, wrote:
On Tue, 2 Jan 2018 19:50:14 -0500, Alex wrote: wrote: On Sun, 31 Dec 2017 20:48:51 -0500, Alex wrote: wrote: We always have the windows open if the AC isn't on and we usually have one of the 24" exhaust fans running on low. If both are on high I think we turn over the air in the house every few minutes. What kind of exhaust fans do you have? They are "Spartan"s that I believe is now handled by Grainger. The original owner bought them from a local place called Wickes RIP that was killed by the chains. All the paperwork came with the house along with the papers on everything else he ever bought. This is a 24" deal with a 2 speed motor, 1/4hp on high probably about 1/10 on low. and it will pop your ears if you don't have enough windows open. So it vents through the roof? Yup, soffit vents, ridge vents and gable end vents. I can move a lot of air. Yup. In a hot, humid environment a big fan will exhaust a lot of hot, humid air, replacing it with hot, humid air. |
A little nippy ...
On Tue, 2 Jan 2018 21:08:52 -0500, "Mr. Luddite"
wrote: On 1/2/2018 9:03 PM, wrote: So it vents through the roof? Yup, soffit vents, ridge vents and gable end vents. I can move a lot of air. Yup. In a hot, humid environment a big fan will exhaust a lot of hot, humid air, replacing it with hot, humid air. They are good the 5-6 months of the year when the AC is off particularly at night. |
A little nippy ...
wrote:
On Tue, 2 Jan 2018 21:08:52 -0500, "Mr. Luddite" wrote: On 1/2/2018 9:03 PM, wrote: So it vents through the roof? Yup, soffit vents, ridge vents and gable end vents. I can move a lot of air. Yup. In a hot, humid environment a big fan will exhaust a lot of hot, humid air, replacing it with hot, humid air. They are good the 5-6 months of the year when the AC is off particularly at night. We do not have the humidity, but do have lots of heat during the day during the summer. In the evening when the bay breezes come over the coast hills, the whole house fan cools the house down rapidly and very economically. |
A little nippy ...
wrote:
On Tue, 2 Jan 2018 19:50:14 -0500, Alex wrote: wrote: On Sun, 31 Dec 2017 20:48:51 -0500, Alex wrote: wrote: We always have the windows open if the AC isn't on and we usually have one of the 24" exhaust fans running on low. If both are on high I think we turn over the air in the house every few minutes. What kind of exhaust fans do you have? They are "Spartan"s that I believe is now handled by Grainger. The original owner bought them from a local place called Wickes RIP that was killed by the chains. All the paperwork came with the house along with the papers on everything else he ever bought. This is a 24" deal with a 2 speed motor, 1/4hp on high probably about 1/10 on low. and it will pop your ears if you don't have enough windows open. So it vents through the roof? Yup, soffit vents, ridge vents and gable end vents. I can move a lot of air. OK, it's mounted in the ceiling. I've seen those. The type I remember had louvers that were opened by the air flow and closed on their own. Kind of noisy, as I recall, but very functional. |
A little nippy ...
On Wed, 3 Jan 2018 20:00:00 -0500, Alex wrote:
wrote: On Tue, 2 Jan 2018 19:50:14 -0500, Alex wrote: Yup, soffit vents, ridge vents and gable end vents. I can move a lot of air. OK, it's mounted in the ceiling. I've seen those. The type I remember had louvers that were opened by the air flow and closed on their own. Kind of noisy, as I recall, but very functional. That is the one. |
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