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Air source heat pumps and noise

 
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Air Source Heat Pumps (ASHPs)
Last Post by newhouse87 1 year ago
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Toodles
 Toodles
(@toodles)
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Joined: 3 years ago
Posts: 2380
07/01/2024 5:25 pm  

@tim441 I’ll endeavour to make a new recording tomorrow now the incessant rains have gone on leave and the temperature is in the region of 2 degrees C. Being a weekday, the traffic is likely to be ‘normal’ so the readings may well say more about the ambient noise than the sound emanating from the ASHP. Regards, Toodles.


Toodles, heats his home with cold draughts and cooks food with magnets.


   
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Toodles
 Toodles
(@toodles)
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07/01/2024 5:48 pm  

@derek-m Derek, unless one operative with one set of measuring instruments visits each site and carries out a strict routine to take all these measurements using the same weighting scheme, you are not likely to be able to put together such an idealistic and meaningful survey. Even such measurements might need repeating perhaps three times and the average of these be used. I took it that what Mars was asking for was a ‘snapshot’ of the nature of the sound relative to other prevailing conditions - if it is to be a scientifically credible and statistically meaningful comparison and statement of ‘Noise’ heard coming from a range of heat pumps, then I feel you are being more ambitious than some of us might be prepared to be! (I include myself in this as being a retired audio technician / sound engineer, I know just how myriad factors can influence such measurements); unless all these factors are controlled or removed, I feel results would still be subject to far too many variations - never mind interpretations. I know you wish to strive for accuracy and credibility, however, practicalities might mean this is extremely difficult to achieve. I think a set of standard tests in a controlled environment with a range of manufacture’s units might be the way to go for consistency but look what happened when measurements were taken of C02 emissions in certain automobiles. Regards, Toodles. 


Toodles, heats his home with cold draughts and cooks food with magnets.


   
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Toodles
 Toodles
(@toodles)
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08/01/2024 10:50 am  

I made a new recording this morning when the OAT was 1.6 degrees C and the LWT was shown by Onecta app as 45 degrees C. I have not forwarded this for as I explained to Mars, the readings are almost identical and with the same amount of variation over a few seconds as when a recording was made at about 8 degrees C. I feel that I am actually registering the ambient level that is much influenced by local traffic conditions. The noise level does not appear to change even with the pump switched off; I appreciate that the ASHP does contribute to the overall level, but, has very little impact on the readings for the average level varies by some 4 dB or more from moment to moment - so the average is all I can compare! (A thought, perhaps if we have heavy snow and minus temperatures one day, traffic will stop and I can get a more meaningful reading!) Regards,Toodles.


This post was modified 2 years ago by Toodles

Toodles, heats his home with cold draughts and cooks food with magnets.


   
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 Derek M
(@derek-m)
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08/01/2024 11:39 am  

Have you considered buying a load of cones and blocking off all the local roads. 😋 

 


This post was modified 2 years ago by Mars

   
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Toodles
 Toodles
(@toodles)
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08/01/2024 11:45 am  

Buying? Wash your mouth out! I thought that procurement of cones was either by nicking them or ny being married to an MP. and securing a contract to supply! Regards, Toodles.


Toodles, heats his home with cold draughts and cooks food with magnets.


   
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 DannyMoss23
(@dannymoss23)
Trusted Member Member
Joined: 2 years ago
Posts: 26
09/01/2024 9:27 am  

Good morning all, new member - I have sent you my video this morning.....there are some background builders spikes but the levels are sticking around high 40db's - I was 3 meters away and the AOT is 2 degrees and we're maintaining a 19 degree inside temp. Db Seems high!  



   
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Mars
 Mars
(@editor)
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Topic starter 09/01/2024 9:33 am  

@dannymoss23, thanks for sending and I've added it to the next video. Will need five more before that video goes live. What the make and model please @dannymoss23?


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 DannyMoss23
(@dannymoss23)
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09/01/2024 9:39 am  

@editor Mitsubishi ecodan 11KW R32



   
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 Persephone
(@persephone)
Estimable Member Member
Joined: 2 years ago
Posts: 66
09/01/2024 10:31 pm  

The noise of my neighbour's Heat Pump is killing me. Are there any good APPs for recording and checking the noise. 



   
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 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 3 years ago
Posts: 3756
09/01/2024 11:22 pm  

There are several noise meter apps and one in particular for recording nuisance, which many local authorities will recommend you use.  Can't remember the name though.

 

Edit - found it  https://noisenuisance.org/noise-app/


This post was modified 2 years ago by JamesPa

4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.


   
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Mars
 Mars
(@editor)
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Joined: 5 years ago
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Topic starter 16/05/2024 7:30 am  

I’m trying source some heat pump videos in rural or garden settings to use as b roll. If you’re interested, please DM me. Ideally, I need them shot creatively, in 4K, landscape/horizontal orientation.

Sound is not important and the heat pump does not have be on or running.


This post was modified 2 years ago 2 times by Mars

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Transparent
 Transparent
(@transparent)
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Joined: 4 years ago
Posts: 2824
16/05/2024 8:40 am  

Posted by: @editor
↑

in rural or garden settings to use as b roll

I could do you a video of these organic heat-pumps.

Ideal for a "bee role"...
They emit a low hum, and never freeze in winter.

image

Save energy... recycle electrons!


   
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