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Search: Posts Made By: liveaboard
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Forum: Portugal
Feb 9th 2018, 1:34 pm
Replies: 53
Views: 21,815
Posted By liveaboard

Re: Heating Options

Ignore the doors and windows as you calculate the walls, they have to be calculated separately.
for the sake of simplicity, assume walls 20C and ceiling 25C inside, 10C outside temperature for 5...
Forum: Portugal
Feb 8th 2018, 9:59 pm
Replies: 53
Views: 21,815
Posted By liveaboard

Re: Heating Options

They use dupont wallmate high density expanded polyurethane sheets.
Thicker can cause practical complexities at the windows + doors, etc.

As I believe you to be a practical person, you should...
Forum: Portugal
Feb 7th 2018, 9:59 am
Replies: 53
Views: 21,815
Posted By liveaboard

Re: Heating Options

The weight wouldn't be significant compared to the concrete. And the strength of it would do a lot to prevent cracking. The cost would also be pretty small compared to the cost of this work.
Well,...
Forum: Portugal
Feb 7th 2018, 7:19 am
Replies: 53
Views: 21,815
Posted By liveaboard

Re: Heating Options

Steel in concrete is protected from rust chemically; the main benefit would be that steel wire would hold anchoring pins, and fiber just wouldn't.

It's just an idea, I'm not really suggesting...
Forum: Portugal
Feb 5th 2018, 12:07 pm
Replies: 53
Views: 21,815
Posted By liveaboard

Re: Heating Options

modern high efficiency burners have 2 tubes to the outside, 1 for drawing in air and 1 for expelling exhaust.
If your house is [will be] tight and cozy without drafts, that's what you need if using...
Forum: Portugal
Feb 5th 2018, 11:06 am
Replies: 53
Views: 21,815
Posted By liveaboard

Re: Heating Options

Sounds sensible to me.
Let us know how you get on; some of those external insulation works go bad and the cladding breaks away, so make sure you take a look at a previous job or two your people have...
Forum: Portugal
Jan 4th 2018, 12:33 pm
Replies: 53
Views: 21,815
Posted By liveaboard

Re: Heating Options

If you cool the flu too much, you can lose the updraft; however, in practice this is pretty rare, unless you use a long water jacket.
The temp leaving the burner will be around 500C. at 100C, there...
Forum: Portugal
Jan 3rd 2018, 5:10 pm
Replies: 53
Views: 21,815
Posted By liveaboard

Re: Heating Options

Standard manifolds for hydronic radiant heat systems have a bypass thermostat; simple and reliable, it only lets hot water into the manifold to maintain the preset temperature. They're made to...
Forum: Portugal
Dec 30th 2017, 7:33 am
Replies: 53
Views: 21,815
Posted By liveaboard

Re: Heating Options

All air conditioners are heat pumps; although the term is used to describe the reverse cycle ones that also provide heat.
The optimistic figures are always used, 3-400%. Maybe, every now and then,...
Forum: Portugal
Dec 22nd 2017, 5:14 pm
Replies: 53
Views: 21,815
Posted By liveaboard

Re: Heating Options

It depends on your preferences and budget; retrofitting underfloor heat is not a small job!
We wanted to demolish most of the interior walls, so we were already in pretty deep.
The entire floor...
Forum: Portugal
Dec 21st 2017, 8:44 am
Replies: 53
Views: 21,815
Posted By liveaboard

Re: Heating Options

So many options; in a changing world it's tough to make decisions about energy use.

1; of course, insulation, tight doors and windows.

2; heat recovery ventilation [google it]. This is very...
Showing results 1 to 11 of 11


 
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