Intelligent Octopus Go/Eon next drive + a dehumidifier ifier

anon_ymous

QrizB said:

waqasahmed said:

Newbie_John said:

One of the less known facts for dehumidifier is that they release more energy than they take from the grid - for simplicity let's say 1kWh taken from the grid results in 1.5kWh output in heat (heat from heating air + latent heat).

Do you have the more complex understanding of that?
I think that's quite interesting if so

See foe example:

https://forums.moneysavingexpert.com/discussion/comment/79505418/#Comment_79505418

or

https://forums.moneysavingexpert.com/discussion/6392759/using-a-dehumidifier-as-a-heater-efficiency-of-dessicant-vs-compressor

I think you'd struggle to return a COP of more than about 1.5, but (as Tesco say) every little helps!

Yup. I didn't expect them to have a COP tbf but that's kinda cool 

Petriix

Newbie_John said:

One of the less known facts for dehumidifier is that they release more energy than they take from the grid - for simplicity let's say 1kWh taken from the grid results in 1.5kWh output in heat (heat from heating air + latent heat).

So there's a lot of little bits that can add up - also what @Petriix said, you don't have to open windows to dry the air (saving heat), some people say that dry air feels warmer etc.

Still more expensive than gas (unless cheap night tariff) and much much worse in efficiency than heat pump.

The process of extracting heat by removing the moisture in the air actually reduces the overall heat capacity of the air. That means it takes less energy to heat the air but also means the air becomes less effective at transferring heat. I haven't quite got my head around the implications of that last point as it could be double edged: maybe drier cold air won't make you feel as cold, but drier warm air won't make you feel as warm. 

anon_ymous

Petriix said:

Newbie_John said:

One of the less known facts for dehumidifier is that they release more energy than they take from the grid - for simplicity let's say 1kWh taken from the grid results in 1.5kWh output in heat (heat from heating air + latent heat).

So there's a lot of little bits that can add up - also what @Petriix said, you don't have to open windows to dry the air (saving heat), some people say that dry air feels warmer etc.

Still more expensive than gas (unless cheap night tariff) and much much worse in efficiency than heat pump.

The process of extracting heat by removing the moisture in the air actually reduces the overall heat capacity of the air. That means it takes less energy to heat the air but also means the air becomes less effective at transferring heat. I haven't quite got my head around the implications of that last point as it could be double edged: maybe drier cold air won't make you feel as cold, but drier warm air won't make you feel as warm. 

I think it'd be comfortable in a dry vs humid heat. See the amount of Texans who mocked people in the UK when we had a heat wave. People who have air to air heat pumps don't seem to mention any bad experiences regarding how warm they feel too

A friend of mine has electric radiators and she says that the air is so dry that she wants a humidifier. She minds little though given that she's got all her bills covered by https://oneutilitybill.co/

As a slight tangent, personally they seem excessively expensive but I guess for her it is "peace of mind" 

QrizB

waqasahmed said:

As a slight tangent, personally they seem excessively expensive but I guess for her it is "peace of mind" 

There have been a few threads on that particular supplier. They seem to have a habit of adjusting the monthly payments upwards if you're using more than they expect. Their "unlimited energy" offer is quite carefully worded!

anon_ymous

QrizB said:

waqasahmed said:

As a slight tangent, personally they seem excessively expensive but I guess for her it is "peace of mind" 

There have been a few threads on that particular supplier. They seem to have a habit of adjusting the monthly payments upwards if you're using more than they expect. Their "unlimited energy" offer is quite carefully worded!

Yeah. I did caution her on it especially as they're using Octopus Energy and she could just go direct for the same usage but she didn't listen. Unfortunately I reckon she'll have to be burned before she stops using them