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  1. Replies
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    efficiency max- off bldg

    I thought you all might be interested --
    -- lots of hype regarding making everything 30% more efficient

    from Mar09 issue of Building Design+Construction:
    Study shows 30% above ASHRAE energy...
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    open furn blower door turn off furn use heat...

    open furn blower door
    turn off furn
    use heat off electronics--

    probably, the heat off electronics will be controlling factor!!

    better get HVAC pro to help!!!

    how many BTU/H from...
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    how about a 'whole house fan' ? just don't use...

    how about a 'whole house fan' ?
    just don't use if outdoor RH% is high --
    & screens over open windows --

    ceiling fans
    blower fan to 'on', a/c & heat= 'off'
    open windows
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    1,190

    insulate the cawl walls [not bottom 4"] provide...

    insulate the cawl walls [not bottom 4"]
    provide drain from crawl
    consider a concrete pad for furn & space in front, sidewalk to door.
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    1,339

    NEC300-22(b) is applicable = ... devices shall be...

    NEC300-22(b) is applicable = ... devices shall be permitted within such ducts ... only if necessarf for therir direct action upon, or sensing of, the contained air. ...
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    first, be sure the ductwork is sealed! -- mastic...

    first, be sure the ductwork is sealed! -- mastic is the easiest.

    second, insulate the ductwork
    -- because this is not a 'conditioned' space.
    -- -- unless you will be having it conditioned with a...
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    782

    why look-up or calculate when I can just read my...

    why look-up or calculate when I can just read my instrument?
    I suspect that I did my first look-up in 1961 --

    again, what is your 'take' on RH% needed ID for good health, even at 57F?
    at 67F?
  8. Replies
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    read about vapor barriers at BUILDINGSCIENCE.com...

    read about vapor barriers at BUILDINGSCIENCE.com

    so, I did not carefully note my dry bulb, I focused on the wet bulb & RH%.

    nevertheless, every thing I have heard or read from the health...
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    trust YOUR senses -- look for holes, feel for...

    trust YOUR senses --
    look for holes,
    feel for air flow! [ other than the wasteful return path]

    Lots of windows?
    storms?
    attic insulation?

    DD for the billing period?
    compute therms/DD/sf.
  10. do YOU have abt $10million liability insurance?...

    do YOU have abt $10million liability insurance?
    if not, scrap it.
  11. Thread: DegDa & bill

    by cem-bsee
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    DegDa & bill

    last week I found out why my DegreeDay calculation did not match that of the Huntsville Utility quantity stated on my billing=

    Hsv Util does NOT match up the actual DD with the billing period. ...
  12. Thread: Load Calcs

    by cem-bsee
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    615

    again, look at your numbers, then 'play' as...

    again,
    look at your numbers, then 'play'
    as stated, R19 is even poor for walls!

    spend $$ on the 'envelope' --
    more attic insulation
    storms
    window film
    shade over windows
    etc.
  13. Replies
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    typical hi RH-winter, here

    at 6am, dry bulb= 23F, wet= 21F = ~95%RH
    so,
    sealing attics & crawlspaces prevents sucking in moist air;
    probably best to forget vapor barrier --

    this hi RH will typically be until 10am --
    ...
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    are you physically comfortable with now system? ...

    are you physically comfortable with now system?

    have you tracked your therms?
    -- sans May's [cooking, etc]

    spend $$ improving the 'envelope', then think new.
    -- could well be smaller 4 euip!...
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    it should be sized just like a car for a small...

    it should be sized just like a car for a small person --:D
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    the other important part of the protection is to...

    the other important part of the protection is to be sure the grounding system is good --
    rod outside of the 'drip line' of the roof so it can be in damp soil,
    the wire to it is well clamped.
    not...
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    cheapest is to go to BestBuy & get some power...

    cheapest is to go to BestBuy & get some power strips with the highest joule rating ~ $30.
    I have used Panamax surge protectors for 20y.
    I had one vaporized, yet it protected a computer & copier...
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    doesn't the closed cell foam act as a vapor...

    doesn't the closed cell foam act as a vapor barrier?
  19. at the 4ft+ level, try 'hardware cloth' with...

    at the 4ft+ level, try 'hardware cloth' with 0.125inch openings --

    for the gutters: try the 5ft plastic covers with longitidutional ribs --
    made in Canada
    was sold by HomeDepot, ~ $1/ft
    -- I...
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    did you ever see the pictures of a 1000gal...

    did you ever see the pictures of a 1000gal propane tank explosion= the aftermath?
    such leveled 1 sq block+ in Pulsaki TN -- 20y/a.

    how about the explosive properties of Hydrogen?
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    in industrial plants, I used mostly elec IR --...

    in industrial plants, I used mostly elec IR
    -- did have a couple of gas fired
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    heat flows from hot to cold; the greater the...

    heat flows from hot to cold;
    the greater the temperature difference, the more transfered.

    so, get a 7day programmable thermostat, & play
    let it bring up the temp, starting 1- 3 hr before normal...
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    I have used IR heaters in 'open' spaces such as...

    I have used IR heaters in 'open' spaces such as above a warehouse desk --
    unit heaters everywhere else.
    in the open' spaces, people sense the heat from IR, but,
    almost impossible to measure...
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    sadly, -- circuit breakers have mechanical...

    sadly,
    -- circuit breakers have mechanical linkage which can corrode & not actuate to trip a breaker;
    -- many breakers are repeately reset, & may not have the protection needed;
    -- -- blown fuses...
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    the $20 unit 500/1000 watt heaters from W-M have...

    the $20 unit 500/1000 watt heaters from W-M have no exposed elements
    -- have fan & tilt.
    why spend 2- 4 times the $$ ?
    my bdrm =13x12 -- one kept temp at 57-59 even when 14F for few hours.
    [...
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