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Post by towerman on Nov 30, 2023 18:05:04 GMT
At this time of year and with the weather as it is at the moment,buses will be running around with the heating on ,won’t this drain the batteries?
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Post by wirewiper on Nov 30, 2023 19:11:24 GMT
At this time of year and with the weather as it is at the moment,buses will be running around with the heating on ,won’t this drain the batteries? A fully charged battery should have enough capacity to operate a full day in service, even with auxiliaries such as heating, lighting or air cooling/air conditioning operating. Electric vehicles can also return kinetic energy from braking back into the battery. I'm not a technical expert on this so maybe someone else can explain in greater detail. |
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Post by yunus on Nov 30, 2023 19:32:41 GMT
At this time of year and with the weather as it is at the moment,buses will be running around with the heating on ,won’t this drain the batteries? A fully charged battery should have enough capacity to operate a full day in service, even with auxiliaries such as heating, lighting or air cooling/air conditioning operating. Electric vehicles can also return kinetic energy from braking back into the battery. I'm not a technical expert on this so maybe someone else can explain in greater detail. Imo you have explained this very well. Both Hybrid & Electric vehicles have regen braking which as said returns kinetic energy into the battery. |
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Post by towerman on Nov 30, 2023 22:23:13 GMT
Thanks for the info.
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Post by M1104 on Dec 1, 2023 11:48:44 GMT
At this time of year and with the weather as it is at the moment,buses will be running around with the heating on ,won’t this drain the batteries? Though it does eat into the battery range that was accounted for when buses were being built. In practice it wouldn't make much difference within daily use and charging of buses. For example the 200 still gets diesel/hybrid buses at night regardless of summer or winter due to the more limited battery range of those Mes over the Ees which range out longer. |
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Post by southlondon413 on Dec 1, 2023 11:53:57 GMT
At this time of year and with the weather as it is at the moment,buses will be running around with the heating on ,won’t this drain the batteries? Though it does eat into the battery range that was accounted for when buses were being built. In practice it wouldn't make much difference within daily use and charging of buses. For example the 200 still gets diesel/hybrid buses at night regardless of summer or winter due to the more limited battery range of those Mes over the Ees which range out longer. That could also be down to the layout of AL meaning the EVs have to return early for charging. |
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Post by M1104 on Dec 1, 2023 13:50:28 GMT
Though it does eat into the battery range that was accounted for when buses were being built. In practice it wouldn't make much difference within daily use and charging of buses. For example the 200 still gets diesel/hybrid buses at night regardless of summer or winter due to the more limited battery range of those Mes over the Ees which range out longer. That could also be down to the layout of AL meaning the EVs have to return early for charging. The Caetanos at WL are said to also be subbed¹ from evenings yet that depot has a different layout from AL. In comparison the Enviro EVs from both depots appear to stay out for the day in most parts. ¹ - for one with more charge |
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Post by redbus on Dec 1, 2023 14:41:18 GMT
Every electric bus type will have a nominal range given by the manufacturer which is based on certain conditions. There are several factors which will impact everyday performance from the type of route, to the use of electrical equipment including lights, wipers, and as you mention heating. Further the batteries will have a lower range in the cold weather, and over time will likely de-grade. It is up to the Bus Operators to select a bus which has the appropriate range in all the conditions to meet the necessary requirements. No doubt the Operators will seek appropriate battery guarantees from the manufacturers.
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Post by cl54 on Dec 2, 2023 7:31:08 GMT
Every electric bus type will have a nominal range given by the manufacturer which is based on certain conditions. There are several factors which will impact everyday performance from the type of route, to the use of electrical equipment including lights, wipers, and as you mention heating. Further the batteries will have a lower range in the cold weather, and over time will likely de-grade. It is up to the Bus Operators to select a bus which has the appropriate range in all the conditions to meet the necessary requirements. No doubt the Operators will seek appropriate battery guarantees from the manufacturers. Ongoing upkeep of the batteries is why the Caetanos at Walworth have a performance related maintenance contract. |
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Post by flatswhatflats on Dec 3, 2023 8:47:56 GMT
Easy answer is to do what AL seem to be doing. Not one their SEe's that I've been on during the cold weather has had any heating on, the vents are still blowing out cold air. Would be better by just turning the system off.
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Post by southlondon413 on Dec 3, 2023 10:16:35 GMT
Easy answer is to do what AL seem to be doing. Not one their SEe's that I've been on during the cold weather has had any heating on, the vents are still blowing out cold air. Would be better by just turning the system off. I’ve noticed it as well on the new spec SEe. I got on a 164 the other and it was f**king freezing. The new spec Ee don’t seem to have this issue at all. |
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Post by redbus on Dec 3, 2023 12:19:41 GMT
Easy answer is to do what AL seem to be doing. Not one their SEe's that I've been on during the cold weather has had any heating on, the vents are still blowing out cold air. Would be better by just turning the system off. Completely unacceptable if that is true, it is perfectly reasonable for passengers to expect heating in the bus during cold weather. |
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Post by southlondon413 on Dec 3, 2023 13:16:07 GMT
Easy answer is to do what AL seem to be doing. Not one their SEe's that I've been on during the cold weather has had any heating on, the vents are still blowing out cold air. Would be better by just turning the system off. Completely unacceptable if that is true, it is perfectly reasonable for passengers to expect heating in the bus during cold weather. 100% true on the new spec AL SEe. |
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Post by snowman on Dec 3, 2023 16:29:12 GMT
Every electric bus type will have a nominal range given by the manufacturer which is based on certain conditions. There are several factors which will impact everyday performance from the type of route, to the use of electrical equipment including lights, wipers, and as you mention heating. Further the batteries will have a lower range in the cold weather, and over time will likely de-grade. It is up to the Bus Operators to select a bus which has the appropriate range in all the conditions to meet the necessary requirements. No doubt the Operators will seek appropriate battery guarantees from the manufacturers. The nominal change is based on test at certain temperature (forgotten what, but I think WLTP for cars is +23c) with auxiliaries heating and air conditioning off. Generally speaking everyday range is 75-85% on warm summer days (about 5% less on hot days with cooling), around 70-75% in winter, and nearer 65-70% in cold spells. Therefore a bus with a nominal (test) range of 200 miles would be expected to only manage about 140 miles in service in winter. |
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Post by jacques on Dec 3, 2023 19:30:15 GMT
Just how long does it take too recharge an empty battery to full?
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