Timeline for Would retro-fitting a DC motor as the blower motor in a residential furnace be more efficient than existing 1/2 hp AC motor?
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 6, 2021 at 6:05 | comment | added | JRaef | spuck is correct. Powering the DC motor under normal operations would introduce more overall losses than powering an AC motor with an inverter only in emergencies. Plus the DC motor will have brushes and a commutator that needs servicing on a regular basis, or you must buy a WAY more expensive PMDC motor. | |
| Oct 4, 2021 at 22:38 | answer | added | Harper - Reinstate Monica | timeline score: 3 | |
| Oct 4, 2021 at 17:19 | comment | added | spuck | How will the less efficient DC motor be powered from AC during the 99% of the time it's running during normal operation? It seems like that outweighs any conversion losses of the DC->AC inverter used during the 1% of the time. | |
| Oct 4, 2021 at 15:01 | answer | added | manassehkatz-Moving 2 Codidact | timeline score: 1 | |
| Oct 4, 2021 at 12:39 | comment | added | J... | Agreed with @Hearth there are far more ways this could blow up in your face than there are ways to make it actually work. Be very careful. | |
| Oct 4, 2021 at 12:03 | comment | added | brhans | Don't forget that you're also going to have to supply 24V to the control electronics in the furnace. | |
| Oct 4, 2021 at 10:58 | history | became hot network question | |||
| Oct 4, 2021 at 7:47 | history | edited | winny | CC BY-SA 4.0 |
added 1 character in body
|
| Oct 4, 2021 at 6:59 | answer | added | Marko Buršič | timeline score: 1 | |
| Oct 4, 2021 at 3:46 | answer | added | user57037 | timeline score: 13 | |
| Oct 4, 2021 at 3:35 | comment | added | jsotola | @Hearth I think that the combustion and the blower are more or less totally separate ... the wall thermostat turns on the gas ... the blower is controlled by a temperature sensor in the fire box ... if the blower fails, then the over temperature sensor shuts off the gas | |
| Oct 4, 2021 at 3:27 | answer | added | user80875 | timeline score: 4 | |
| Oct 4, 2021 at 2:57 | comment | added | Hearth | I'd be very concerned about modifying a furnace in any way at all--mess things up and the gas could leak out unburned. | |
| Oct 4, 2021 at 2:55 | history | asked | Peggy Schafer | CC BY-SA 4.0 |