Home |
Search |
Today's Posts |
|
Home Repair (alt.home.repair) For all homeowners and DIYers with many experienced tradesmen. Solve your toughest home fix-it problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to alt.home.repair
|
|||
|
|||
Ceiling fans: AC vs DC
I am shopping for ceiling fans and I am see adds for fans that have DC motors that are rated and advertised for a lot more efficiency.
Just don't understand why a DC motor would be much more efficient that AC ? Any help is appreciated. Thank You. |
#2
Posted to alt.home.repair
|
|||
|
|||
Ceiling fans: AC vs DC
|
#3
Posted to alt.home.repair
|
|||
|
|||
Ceiling fans: AC vs DC
On Thursday, June 25, 2020 at 8:40:55 PM UTC-5, Hawk wrote:
On 6/25/2020 9:25 PM, wrote: I am shopping for ceiling fans and I am see adds for fans that have DC motors that are rated and advertised for a lot more efficiency. Just don't understand why a DC motor would be much more efficient that AC ? Any help is appreciated. Thank You. DC motor is 30% more efficient due to the secondary magnetic field being generated from the permanent magnets rather than copper windings. Does that add alot of weigh to the fan motor ? |
#5
Posted to alt.home.repair
|
|||
|
|||
Ceiling fans: AC vs DC
On Friday, June 26, 2020 at 2:59:07 PM UTC-5, Hawk wrote:
On 6/26/2020 10:36 AM, wrote: On Thursday, June 25, 2020 at 8:40:55 PM UTC-5, Hawk wrote: On 6/25/2020 9:25 PM, wrote: I am shopping for ceiling fans and I am see adds for fans that have DC motors that are rated and advertised for a lot more efficiency. Just don't understand why a DC motor would be much more efficient that AC ? Any help is appreciated. Thank You. DC motor is 30% more efficient due to the secondary magnetic field being generated from the permanent magnets rather than copper windings. Does that add alot of weigh to the fan motor ? https://www.machinedesign.com/mechan...per%20windings. Good Article ... Thank You. |
#6
Posted to alt.home.repair
|
|||
|
|||
Ceiling fans: AC vs DC
On Monday, July 6, 2020 at 2:23:39 PM UTC-4, wrote:
On Friday, June 26, 2020 at 2:59:07 PM UTC-5, Hawk wrote: On 6/26/2020 10:36 AM, wrote: On Thursday, June 25, 2020 at 8:40:55 PM UTC-5, Hawk wrote: On 6/25/2020 9:25 PM, wrote: I am shopping for ceiling fans and I am see adds for fans that have DC motors that are rated and advertised for a lot more efficiency. Just don't understand why a DC motor would be much more efficient that AC ? Any help is appreciated. Thank You. DC motor is 30% more efficient due to the secondary magnetic field being generated from the permanent magnets rather than copper windings. Does that add alot of weigh to the fan motor ? https://www.machinedesign.com/mechan...per%20windings. Good Article ... Thank You. Also factor in that whatever the percent savings, they are a pretty small load to begin with, the lower the speed the less power, factor in how many hours you actually use it. Using an energy efficient motor on an air handler or pool pump can make some noticeable difference in your electric bill. A typical ceiling fan, used occasionally, not so much. |
#7
Posted to alt.home.repair
|
|||
|
|||
Ceiling fans: AC vs DC
On Mon, 6 Jul 2020 12:00:22 -0700 (PDT), trader_4
wrote: On Monday, July 6, 2020 at 2:23:39 PM UTC-4, wrote: On Friday, June 26, 2020 at 2:59:07 PM UTC-5, Hawk wrote: On 6/26/2020 10:36 AM, wrote: On Thursday, June 25, 2020 at 8:40:55 PM UTC-5, Hawk wrote: On 6/25/2020 9:25 PM, wrote: I am shopping for ceiling fans and I am see adds for fans that have DC motors that are rated and advertised for a lot more efficiency. Just don't understand why a DC motor would be much more efficient that AC ? Any help is appreciated. Thank You. DC motor is 30% more efficient due to the secondary magnetic field being generated from the permanent magnets rather than copper windings. Does that add alot of weigh to the fan motor ? https://www.machinedesign.com/mechan...per%20windings. Good Article ... Thank You. Also factor in that whatever the percent savings, they are a pretty small load to begin with, the lower the speed the less power, factor in how many hours you actually use it. Using an energy efficient motor on an air handler or pool pump can make some noticeable difference in your electric bill. A typical ceiling fan, used occasionally, not so much. Most people have those ceiling fans on a lot if they ever actually turn them off but usually al low or medium speed. That may be where some old school ac motors are least efficient and a smarter design could make some difference but we are talking about pennies. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Ceiling fans next to ceiling diffusers | Home Repair | |||
Vaulted Ceiling--Installing Ceiling Fans | Home Repair | |||
Replacing Bathroom Ceiling Exhaust Fans... | Home Repair | |||
Ceiling fans simply pull toilet odors and airborne germs up into the air | Home Repair | |||
ceiling fans | UK diy |