dk1
Veteran Member
Never signed or even travelled much on them. The hauled sets could be bad & the 170s patchy.I bet you miss the 360s… Not!
Never signed or even travelled much on them. The hauled sets could be bad & the 170s patchy.I bet you miss the 360s… Not!
The GWR IET Class 800s have always been well cooled trains in my opinion. I changed onto one from an XC Voyager, which while it had good air conditioning, had a much higher internal temperature than the 800.
Will just mention the oft-heard idea of painting roofs white - astonishing that, even now, it isn't mandatory.
In addition to the increased resistance mentioned upthread, the hopper windows that everything from the late 1970s onwards had fitted were utterly terrible at circulating the air anyway. They just generate a load of extra noise. All because some people weren't smart enough to not stick various body parts out.When the train is moving at speed, probably. But not so much if there's disruption and the train is either moving very slowly or stopped for an extended period.
I can assure you that wasn't the case. It would have been AC blowing hot, rather than the heating. Pedantry, but the HVAC system on 166s mean that current, heating isn't running.Count yourself lucky you weren't on my GWR 166 earlier with no air con and the heating on full blast!!
All right, perhaps that is slightly too cold...When the 460s were first introduced on the Gatwick Express, I was on one once which was most definitely set far too cold.
There was a thick build up of ice at the lower edges on the inside of the windows... and yes, this was in summer.
That happened to me once, on a 455 from Waterloo: a hot day and the heating on full. About the only saving grace was that one can open the windows a little on 455s, so there was some relief when the train got moving.I was on a 150 when it was the record temperature heatwave that head the heater on!
People in summer hot weather clothes should not be blasted with freezing air. They need to set a comfortable temperature.
Not really. It's because the outside air is at about -45! Most aircraft bleed air from one of the engine compressor stages. That air is at about 150-200 degrees, so it's cooled (easy, just dump the heat to atmosphere) before being mixed with cabin air.That just makes me want to be there, now. Lovely. Or on an aircraft, their aircon is generally lovely and cold (largely due to the compressors being those two massive noisy things on the wings and thus not lacking in power).
Not really. It's because the outside air is at about -45! Most aircraft bleed air from one of the engine compressor stages. That air is at about 150-200 degrees, so it's cooled (easy, just dump the heat to atmosphere) before being mixed with cabin air.
The 787 doesn't bleed air from the engines and instead uses ram air from outside. I believe it still requires cooling due to the temperature increase that occurs when it is compressed.
We have about 9 months of winter in this country, can we not just enjoy the summer heat?I hope so! Nothing better than arctic air con on a hot day
Who goes out with a jumper on a glorious summers day?Decent aircon is lovely. If you don't like it, put on a jumper.
I travelled from York to Kings Cross on Sunday on a 8xx and it was nice to step of the train at Kings Cross into a lovely warm station. The temperature on the train was too low.2 1/2 hours on a cold train isn't much fun.
The figure usually quoted for outside air temperature at cruise altitude is -56 degC.Not really. It's because the outside air is at about -45! Most aircraft bleed air from one of the engine compressor stages. That air is at about 150-200 degrees, so it's cooled (easy, just dump the heat to atmosphere) before being mixed with cabin air.
Ram effect increases that to around -30 degC. Then it is further compressed (electric), with more resultant heating.The 787 doesn't bleed air from the engines and instead uses ram air from outside. I believe it still requires cooling due to the temperature increase that occurs when it is compressed.
We have that on the Tyne & Wear Metro all the time. The new Stadler units couldn't come soon enough.Count yourself lucky you weren't on my GWR 166 earlier with no air con and the heating on full blast!!
Mark 4 air con can be very unreliable, but when it works it's very good I've always found.I love a cold train in hot weather so I despise the Mark 3s, Mark 4s and 158s for their flakey aircon!
Who goes out with a jumper on a glorious summers day?
Don't get me started on this. I have to argue with guards about it. They know best though, despite our traction knowledge being far superior to theirs.The GWR 158's are far better than they used to be, the 166s are awful though. Problem is guards are too quick to open the windows which just knackers the air con, today on a 158 that was lovely and cool and yet the windows had been opened in one coach despite ice cool air blasting out