Text 10480, 119 rader
Skriven 2007-01-13 11:22:26 av Glen Jamieson
     Kommentar till en text av Jim Weller
Ärende: IN-FLOOR HEATING 70113
==============================
 -=> Quoting Jim Weller to Glen Jamieson <=-

 GJ> in-floor heating was provided by copper-sheathed, aluminium oxide
 GJ> insulated heating cables (Pyrotenax), cast into the concrete.  There
 JW> Such systems are all the rage now in Yuppie McMansions, but just in
 JW> bathrooms with quarry tile floors, not the whole house.

I suppose there are such people, who don't mind paying to keep the
bathroom floor warm all day, so they can get the benefit for a few
minutes of use.

 JW> A few VERY wealthy people in Toronto and Ottawa have had their
 JW> driveways done so they don't have to shovel snow. What a waste! Even if
 JW> I could afford to operate an electric driveway in winter I'd be
 JW> embarrassed to. 

These days, with energy conservation in the minds of most thinking
people, such behaviour would certainly be valid grounds for criticism.
I would expect the owners of such multi-kilo-Watt powered driveways to
then get into their over-sized SUVs to drive the 1/2 mile to their
favourite gym, to get their exercise.
 
 GJ> The Romans also used under-floor heating, from hot air ducts with a

 JW> Hot water boilers do have advantages over forced air furnaces though:

 JW> - longer life
 JW> - more energy efficient
 JW> - a boiler can have zone valves for different parts of the house, with
 JW> separate thermostats but a furnace has just one thermostat
 JW> controller. - more even heat distribution
 JW> - narrower heating range (no highs and lows)
 JW> - quieter to run (no blower)
 JW> - cleaner (no recirculated dust)
 JW> - can economically pre-heat water going into an electric hot water
 JW> tank, thereby reducing power bills

Rather than under-floor hot air house heating, circulated air is more
common and practical.  Here, reverse cycle air conditioning is used to
provide both heating and cooling, using the same air ducts, although
the ideal location of room air inlets is different for hot and cold.

I see no reason why a gas or oil-fired hot water boiler should last
longer than one which uses a heat exchanger air heater; on the
contrary.   And a properly designed air heater should be at least as
efficient as one which uses circulating water as an intermediate
vehicle for transferring heat from the furnace to the occupants.

Hot air systems, like cooling air conditioners, use solenoid operated
dampers in room ducts to cut off air flow to some rooms when not
needed.  These are controlled by switches located in a convenient
central place.  Only one thermostat is required, in the return air
duct.  In heating, as in cooling, good design of the system will give
even heat distribution.   As the blower is located remotely from the
conditioned spaces, if it is a good design the sound is almost
imperceptable.  The use of an air filter in the return air duct
ensures that only clean air is supplied to the rooms.  An additional
advantage of ducted air systems is that "make-up" air can be adjusted
to trade "freshness" against loss of heat.  Smokers require more air
changes, and so cost money.

The main advantage of the more expensive and less efficient hot water
system is that takes up less space.  Insulated pipes are much smaller
than insulated air ducts.  This is a major consideration when heating
multi-storey buildings.  For our usual single-storey houses there is
always plenty of space in the ceilings for ducts.  Most hotels and
other large buildings use water as the transfer medium for both
heating and cooling.

 JW> Title: Bitter Melon with Eggs

 JW> 1/2 lb Bitter melon

 JW> crosswise, on the bias, into 1/4" wide strips.  In a bowl, stir one
 JW> tablespoon salt into two cups of water.  Put in the melon strips and
 JW> let them soak two hours, then drain, rinse under running water, and
 JW> pat dry. 

This is an instruction frequently given when preparing bitter melon,
to reduce "bitterness", but is something I never do.  I like the
bitterness of bitter melon, which is why I cook and eat it.  That
flavour should be balanced against other flavours in the dish.

MMMMM----- Recipe via Meal-Master (tm) v8.05
 
      Title: Adobong Isda - Fish Adobo
 Categories: Fish, Filipino, Asia-se, Adobo
      Yield: 4 Servings
 
      3 lb Fish- trout
           ;bluefish or similar
           ;fish, dressed
    1/4 ts Pepper
           ;freshly ground
           I Tb Garlic cloves
           ;finely minced
      1 sm Herb- bay leaf
           ;(optional)
    1/3 c  Vinegar- cider
      3 tb Oil- vegetable
           ;or corn
    1/4 c  Water
      1 tb Salt
 
  Combine all ingredients except oil in a saucepan. Marinate 1 hr.
  Bring to a boil. Cover and simmer 5 min. Remove fish and set aside.
  Reduce sauce to half and set aside. Fry fish in hot oil till it is
  brown, and pour sauce in with fish. Simmer for 3 min and serve hot.
  
  :http://home.sprynet.com/sprynet/ydragon/adobfsh.htm - Yolly's Free
  Recipes From: Michael Loo                     Date: 01-08-00
 
MMMMM
 

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 * Origin: Braintap BBS Adelaide Australia (3:800/449)