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Fanless Noisless Quiet inverters

Cool kid

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Was looking to get a fanless and Noisless hybrid inverter, Other than Goodwe which they claim is fanless and achieves a high efficiency rate which other alternatives are there in the market.? Was looking at the Huawei inverters they look very compact are small and easily portable although I don't know about their effeciency rate , any insights from members .? What would be your recommendation.
 
Goodwe is a silent inverter like in SILENT, I do not know of another brand that beats the goodwe's silence
 
Goodwe is a silent inverter like in SILENT, I do not know of another brand that beats the goodwe's silence
Awww I think this is where we should be heading Goodwe must be quite innovative to come up with a silent inverter am sure that will be giving then a competitive edge against competitors .
 
Solis 5G HVES ( US Model ) Hybrid is convection cooled, no fans, similar to the GoodWe but has been on the market longer.
 
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The SOLIS Hybrid 5G has an internal fan that turns on when it processes a high load. The fan is then hearable, but not very loud.
 
The SOLIS RHI 4.6 5G has two fans inside the case to distribute the heat inside the case. Outside is natural cooling... The case has no fan opening

This is how the mainboard of the RHI 4.6 5G looks like. You can clearly see the two fans.

1658236712956.png
 
That is a different product than I was discussing, your image it is the 48V version which has been out significantly longer than the HV version I have.

Here is an image of the HVES 5G ( US Version ) that I was referring too.

SLioSC9WRSCxSnTCZb3Sj9BFWPN3JOgYfw.png
 
The SOLIS Hybrid 5G has an internal fan that turns on when it processes a high load. The fan is then hearable, but not very loud.
Looking for something that's completely quiet , I wouldn't be comfortable with anything making any noise even if not too loud any kind of noise to me tends to be disruptive especially during the night when it's too quiet. Any alternatives
 
fans can generate noise, capacitors and other power components can generate noise from activating/deactivating very quickly. many devices make a compromise where perceivable noise is generated. finding devices that are truly silent perceptually at close distance is rare for lots of high power devices.

good luck with this search!

fanless designs, at least for computer power supplies "PSU" usually have a little bit of a price premium compared to designs including a cooling fan.

most designs that i have encountered have some sort of fan that becomes loud when utilizing the rated power output
 
There are a lot of sealed inverters that don't have fans (e.g., Outback's FXR2524A), primarily to work in corrosive environments such as coastal regions or a saltwater boat. Mine are sealed and silent with very high efficiency, but they're GT microinverters.
 
There are a lot of sealed inverters that don't have fans (e.g., Outback's FXR2524A), primarily to work in corrosive environments such as coastal regions or a saltwater boat. Mine are sealed and silent with very high efficiency, but they're GT microinverters.
You mean they don't make any noise would like to learn more about them
 
Ooh nice let me have a look at it but how about the efficiency rate is it as effecient as the likes of Goodwe which have achieved an efficiency rate of 93% proven and tested data .
It is in the specification, CEC efficiency 97.5%, Goodwe is rated CEC 97.1% they are very similar inverters, Goodwe does have higher backup power models to select from, all The Solis backup is specified 6kw, 7kw surge. The 5kw-10kw models is just for selling to the Grid

If you don't know about CEC, read HERE
 
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You mean they don't make any noise ...would like to learn more about them
Mine are Enphase microinverters and sit on the roof under the panels so even if they did you'd never hear it. Each microinverters handles just a few hundred watts so no AC hum I can detect, no fan, they're completely sealed against the elements. Microinverters have a ton of advantages, but as I said they're grid-tied (GT), so unless you're looking for a GT solution it's probably not a good fit.
 
It is in the specification, CEC efficiency 97.5%, Goodwe is rated CEC 97.1% they are very similar inverters, Goodwe does have higher backup power models to select from, all The Solis backup is specified 6kw, 7kw surge. The 5kw-10kw models is just for selling to the Grid

If you don't know about CEC, read HERE

It is in the specification, CEC efficiency 97.5%, Goodwe is rated CEC 97.1% they are very similar inverters, Goodwe does have higher backup power models to select from, all The Solis backup is specified 6kw, 7kw surge. The 5kw-10kw models is just for selling to the Grid

If you don't know about CEC, read HERE
Went through the spec and I realized we have intelligent fan cooling method for goodwe and natural convection cooling method for Solis , Now what does this mean? does it mean goodwe Inverter have fans? And what does natural convection mean , would you kindly enlighten me abit about this two technologies.
 
And what does natural convection mean
this usually implies that there is not a fan, but there is a heatsink, where the fins run long way vertically up and down. air between the fins will heat up, causing buoyancy upwards motion when heated above ambient temperature. this creates a gentle wind proportional to the heating past ambient.

1658506218603.png

1658506430398.jpeg
 
this usually implies that there is not a fan, but there is a heatsink, where the fins run long way vertically up and down. air between the fins will heat up, causing buoyancy upwards motion when heated above ambient temperature. this creates a gentle wind proportional to the heating past ambient.

View attachment 103665

View attachment 103666
Thanks so much for this explanation and also for the illustration diagram so during natural convection process will there be any sounds produced and maybe how does it differ from intelligent fan cooling
 
Thanks so much for this explanation and also for the illustration diagram so during natural convection process will there be any sounds produced and maybe how does it differ from intelligent fan cooling
Natural convection usually results in much slower air flow than fan cooling, so convection only types might need bigger heat sink for same power vs fan type. Airflow with convection is proportional to temperature above ambient, but it is best for hardware life to keep degrees above ambient constrained. So the airflow speed is generally slower and thus quieter than fan.

Pretty much anything that uses gravity / natural convection with heat sink fins, and no fan, I would expect to be silent. The airflow is so slow and no mechanical spinning thing.

Any device that uses a fan (even intelligent as in temperature controlling speed) would expect to make some degree of perceivable noise.

Airflow is usually the biggest cause of noise in inverter in my opinion.
 
Natural convection usually results in much slower air flow than fan cooling, so convection only types might need bigger heat sink for same power vs fan type. Airflow with convection is proportional to temperature above ambient, but it is best for hardware life to keep degrees above ambient constrained. So the airflow speed is generally slower and thus quieter than fan.

Pretty much anything that uses gravity / natural convection with heat sink fins, and no fan, I would expect to be silent. The airflow is so slow and no mechanical spinning thing.

Any device that uses a fan (even intelligent as in temperature controlling speed) would expect to make some degree of perceivable noise.

Airflow is usually the biggest cause of noise in inverter in my opinion.
Thanks am abit grey about the technical part but will try to internalise and understand this informative piece of information.am greatful that I always find some good and great pple here who are always willing to help and enlighten us further about concepts that we don't really understand for that reason I salute you and say thankyou .With your explanation I tend to think Solis inverter as suggested by @Solar Guppy would have less noise compared to goodwe as it's the one using conventional cooling .That said I will still need some in-depth review about the two products so this time round I will explore further and get to view a few videos on YouTube on the same .if you know of good reviews out there I wouldn't mind if you pointed me to that direction and maybe share a link .
 
Thanks am abit grey about the technical part but will try to internalise and understand this informative piece of information.am greatful that I always find some good and great pple here who are always willing to help and enlighten us further about concepts that we don't really understand for that reason I salute you and say thankyou .With your explanation I tend to think Solis inverter as suggested by @Solar Guppy would have less noise compared to goodwe as it's the one using conventional cooling .That said I will still need some in-depth review about the two products so this time round I will explore further and get to view a few videos on YouTube on the same .if you know of good reviews out there I wouldn't mind if you pointed me to that direction and maybe share a link .

You won't find anything on Goodwe as they just started selling in the US, Solis 5G HVES has been out for 2+ years but I am told the sales Volume has been low, it is not a reflection of the product performance, it is the requirement for a BYD battery box HV which is UL9540 certified with if you want to use the backup functionality.

In General, you have the DYI crowd which is mostly 48V and not code compliant unless it's using a listed configuration which for the most part is tier 1 vendors ( Schneider , Outback, SMA ) and Sol-Ark all have listed combinations.

The high voltage products are technically a better options, but for the most part it is all listed equipment and that isn't something that the budget DYI seem to vote with their wallet to purchase.

Tesla, Enphase, Generac are only for qualified professionals, and their systems are what most homeowners are getting for turn-key systems, at least in the US.

Finally the Solis 5G HVES is in the last year(s) of sales for US market ( I have be told ), they are working on the next generation that will have options for 2X+ more kw backup and parallel options, whole home ATS like Tesla and Enphase can do.

In General, the ESS / Storage market is in flux, the code changes in NEC2020 has the potential to be what pushes the market to more HV solutions? only time will tell, it certainly is MUCH simpler, small gauge wiring, plug and play battery's that just work out of the box.

I own a pair of the Solis 5G HVES, they are fantastic performers hardware wise, not a single issue, software is usable but has bugs that will never be fixed, this attitude seems to be common in China designed products from reading on many forums.
 
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