September 26, 20232 yr I now really need todo this modification for my Sunsynk inverter as the fans are getting way too noisy. The thing is, no one seems to have stock of the fans you listed. Does anyone have a recommendation for an alternative brand? To import is possible and shipping wiil be only R500 for 5 fans. So if I can’t find locally, perhaps there are members here that may be keen on a group buy?
October 1, 20232 yr I now really need todo this modification for my Sunsynk inverter as the fans are getting way too noisy. The thing is, no one seems to have stock of the fans you listed. Does anyone have a recommendation for an alternative brand? To import is possible and shipping wiil be only R500 for 5 fans. So if I can’t find locally, perhaps there are members here that may be keen on a group buy? Hey XL1000, I bought these from Takealot, a little bigger but doing the job. DeepCool Wind Blade 120mm Black Case Fan w/Blue LED available to buy online at @TAKEALOT We offer fast, reliable delivery to your door. https://www.takealot.com/deepcool-wind-blade-120mm-black-case-fan-w-blue-led/PLID53565939
October 1, 20232 yr Do away with 12v psu. 220v fan: https://www.geewiz.co.za/case-fan/194675-ultralan-cabinet-cooling-fan-with-power-cord.html
October 6, 20232 yr I have a 5kw in the garage. Even though noise is not an issue, the temperature of the inverter worries me. The minimum I have seen is 68°C and maximum of close to 90°C. I will try this hack and see how much the temp drops.
October 6, 20232 yr Adding a fan or 2 at the top of the sunsynk 5kw makes a massive difference to the temps Ideally you want to add a speed controlled fan which can be automated from your HA or in my case using an esp32 controller managed from my nodered.
October 6, 20232 yr 5 minutes ago, WannabeSolarSparky said: Adding a fan or 2 at the top of the sunsynk 5kw makes a massive difference to the temps Ideally you want to add a speed controlled fan which can be automated from your HA or in my case using an esp32 controller managed from my nodered. Thanks, I'm assuming the fan will be pulling up air if you add it on top instead of blowing it into the heat sink.
October 6, 20232 yr 4 minutes ago, phidz said: Thanks, I'm assuming the fan will be pulling up air if you add it on top instead of blowing it into the heat sink. yes on mine it is pulling air up over all the heatsink fins for maximum effect, the 5kw model has pretty decent passive cooling, but the left side where the capacitor bank is does heat up quite a bit if you have constant loads. And like yours mine is also in my garage, so there is not much natural airflow so the fan definitely helps. Even a low flow rate fan will drastically bring down the temps as those heat sinks are massive Edited October 6, 20232 yr by WannabeSolarSparky
October 6, 20232 yr 2 minutes ago, WannabeSolarSparky said: yes on mine it is pulling air up over all the heatsink fins for maximum effect, the 5kw model has pretty decent passive cooling, but the left side where the capacitor bank is does heat up quite a bit if you have constant loads. And like yours mine is also in my garage, so there is not much natural airflow so the fan definitely helps. Even a low flow rate fan will drastically bring down the temps as those heat sinks are massive Thank you. I am going to do this and post the results here.
October 20, 20232 yr My update as promised, i bought 3 of these cheap fans. I was initially disappointed because they didn't move much air. I zip tied them together and placed them on top of the inverter. The inverter runs much cooler than before, previously i had seen temperatures of over 90 degrees but not the highest i have seen is around 78 degrees. I am really impressed and will add another fan at the bottom to blow the air upwards.
November 1, 20232 yr Has anybody designed a 5Kw fan housing of some sort. I have a 3D printer but have no design skill at all and normally get all my prints from Thingiverse. I could maybe take the design the guys are using on the 8KW and see how to mount that?
November 1, 20232 yr 1 hour ago, Greglsh said: Has anybody designed a 5Kw fan housing of some sort. I have a 3D printer but have no design skill at all and normally get all my prints from Thingiverse. I could maybe take the design the guys are using on the 8KW and see how to mount that? Look on Thingyverse, there are some prints there.
November 1, 20232 yr On 2023/10/20 at 12:57 PM, phidz said: The inverter runs much cooler than before, previously i had seen temperatures of over 90 degrees If you reach temps of 90 degC you have something seriously wrong. The Sunsynk's fan switches on at 50°C and switches off at 45°C. At high temps it will derate the output to protect the components.
November 1, 20232 yr 48 minutes ago, TaliaB said: If you reach temps of 90 degC you have something seriously wrong. The Sunsynk's fan switches on at 50°C and switches off at 45°C. At high temps it will derate the output to protect the components. As I said in the post, the temperature hasn't gone that high since I put a fan. I don't know whether the inverter is reporting false readings but the heat sinks really feel hot to the touch during the day. As I'm writing now, the inverter is reporting 54.5degC but the inverter fans are not on. Maybe it's just false readings, I don't know.
November 2, 20232 yr 14 hours ago, CyberJoe said: Look on Thingyverse, there are some prints there. Hi, yes I found those and those were designed for the 8Kw but maybe I can use something from them. I can't find anything specific for the 5Kw.
November 2, 20232 yr 1 hour ago, Greglsh said: Hi, yes I found those and those were designed for the 8Kw but maybe I can use something from them. I can't find anything specific for the 5Kw. https://www.thingiverse.com/thing:5224913
November 2, 20232 yr 25 minutes ago, CyberJoe said: https://www.thingiverse.com/thing:5224913 Stupid me I kept searching for SunSynk and only found the 8Kw nice find thank you very much.
November 2, 20232 yr 1 hour ago, Greglsh said: Stupid me I kept searching for SunSynk and only found the 8Kw nice find thank you very much. Just like I could not find the 8kw one 😀
November 2, 20232 yr 1 hour ago, CyberJoe said: https://www.thingiverse.com/thing:5224913 Problem now is it does not fit on my printer bed, need to split it.
November 16, 20232 yr On 2023/03/28 at 5:27 PM, slipx said: Just an update. Added a Wemos D1 Mini to control the fans. Running at 100% all the time is not efficient. The fan speed is automatically regulated based on the AC temperature and the set temperature threshold. It's a lot quieter now. Hi Slipx Where is the AC temperature value gleaned from ? I'm using your ESP code for the inverter itself ( version : around July 2023 ). I see DC radiator and transformer temps only. I had look at your more current code, but didn't see an AC temp ? *edit* I found this post and enabled the AC temp option in the graph on the Sunsynk web page. It seems to match DC Radiator temp degree for degree ? I watched them both drop as the geyser finished up pounding the inverter and battery and they seem to be 100% in sync Edited November 16, 20232 yr by hilt_ctn
November 16, 20232 yr HI. I changed the sensor name a while back to align with some of the other integrations. The AC temp is the Radiator Temperature - platform: modbus_controller # 090 DC Transformer Temperature modbus_controller_id: sunsynk name: "${friendly_name} DC Transformer Temperature" id: sunsynk_esphome_dc_transformer_temperature register_type: holding address: 090 unit_of_measurement: "°C" accuracy_decimals: 1 device_class: temperature state_class: measurement value_type: S_WORD filters: - offset: -1000 - multiply: 0.1 - platform: modbus_controller # 091 Radiator Temperature modbus_controller_id: sunsynk name: "${friendly_name} Radiator Temperature" id: sunsynk_esphome_radiator_temperature register_type: holding address: 091 unit_of_measurement: "°C" accuracy_decimals: 1 device_class: temperature state_class: measurement value_type: S_WORD filters: - offset: -1000 - multiply: 0.1
November 17, 20232 yr 11 hours ago, slipx said: HI. I changed the sensor name a while back to align with some of the other integrations. The AC temp is the Radiator Temperature Thank you sir ! Your work is awesome as always. And as always, thank you for sharing it
November 17, 20232 yr On 2023/11/02 at 2:07 PM, Greglsh said: Problem now is it does not fit on my printer bed, need to split it. Removed the skirt to fit on a 235mmx235mm print bed. Deye_92mm_Fans_edit.stl
November 28, 20232 yr On 2023/11/17 at 11:33 AM, dino_coder said: Removed the skirt to fit on a 235mmx235mm print bed. Deye_92mm_Fans_edit.stl 24.5 kB · 4 downloads Hi @dino_coder I am struggling to find decent 92mm fans, would it be possible to mod the design to fit 80mm fans. Just asking as I have no design bones in my body?
November 28, 20232 yr 49 minutes ago, Greglsh said: Hi @dino_coder I am struggling to find decent 92mm fans, would it be possible to mod the design to fit 80mm fans. Just asking as I have no design bones in my body? I bit the bullet and ordered some noctua fans off Amazon
November 28, 20232 yr 13 minutes ago, madness_za said: I bit the bullet and ordered some noctua fans off Amazon What did you pay for each fan and delivery, i looked at 2 x 92mm noctua fans and with delivery it is almost R1000.
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