New-York daily tribune., 1859-12-24
SCIENCE, INDUSTRY, AND INVENTION.
HEATING APPARATUS.

almost inbumerable, but very few, combine economy
comfort, and health.
The open CRATE or fireplace, is perfect ventila-
ton, but very imperfect economzer or warning sp
paratus. Persons who care more for a cheerful,
glowing fire, than the annoyance from dust, uneven
temperature and pecuniay expense cannot do better
than the open grate
Metal stoves and tunnels are economizers, but
sadly detrimental to health and comfort.
AZ sir sgreatly yitiated by being brought in con-
tact IT'D the dry hot surface Of metal stove, the evil
can only be remeded by increasing the area Of heat
ing e-suriace to an extent which will insure sufficient
raoation and copduconto keepit low temperature.
Though ofthe recent improvements in stoves con-
ss in constructing them in such manner as to insure
a slow fire and rapid circulation Of cool air around
their outer surfaces the great bulk Of reliable low
temperature stove renders it an ugly, ami in most
places all nconvenient device.
The hot air furnace though in general use, and un-
dergoing constant improvements, at best produces an
uncomfortable aud unhealthy atmosphere
The difficulty of regulating the temperature of dry
metal surfaces subjected to the heat of fire. renders
these liable to become red hot and the best OF
them heat the air to temperature which produces an
uup easant and deleerous effect, unless the combustion
be 50 slow as to require constant attention. Could
there be cheap sin pie furnace, constructed thatno
part Of iis surface should become heated above 800
degrees, insure perfect combustion with little aten-
tion and deliver its products 10 the chimney at low
temperature, it would compensate for large amount
of inventive genius.
Hot water apparatus has been used to
limited extent, but as it has no advantages
over and is lees convenient than steam, 1t can never
cone into general sEeam appears to b0 b0stor
calculated az vehicle for conveying heatfrom single
Ere throughout building. for warming several
apartments, than any other medium known. is ad-
vaDtages over air or metal are;
lst That its temperature may be made self adjusting
and uniform, by it's pressure.
3D. That il radiates much greater quantity of heat
at the same temperature.
3d. 1t may be conducted a long way from the tire
without losing its sensible heat.
AS the total amount of sensible and latent heat is
nearly the same at all temperatures, there is no neces
sty for using steam at high pressure, or otherwise
rendering il liable to dangerous consequences at the
same time, 10 pressure boiler may be constructed
and as to be little safer than powder msga
zine as il occasionally illustrated by the bursting and
scaldina produced by Of the il-deysed or care
leesly -plaeed water back ranges now in use.
Science has yet failed to demonstrate the cause Of
in using what are known to be preventives under all
possible circumstances. Though it may be impossible
TO apply such preventives in the Of steam for mo-
tive power, boilers may be constructed and set
as to be comparatively safe for heating purposes.
Our attention having been called to several improved
plans for heating by steam, generally differing only
in some of their minor details consider all such as
are substantially made having large furnace room for
Goals selfregulating automatic dampers, &C., with
= view 10 safety convenience and economy, superior
10 any other plan for producing artificial warmth.
The prnrpa difference in these devices in the lOca
ton of their heating surfaces, the one being ncosed
in chamber under the hoor through which cold air Is
conducted and warmed it enters the room, and the
other is placed directly in the room TO be warmed,
being made of ornamental iron plates, or tubing coed
ND and surrounded by an ornamented screen OF open
work The first insures perfect ventilation while the
atter il used without ventilation may economic fuel
NovKL STEAs-BOILER.-A mere eoiled two-n n
tube OF considerable length being used in this city
for supplying engine of several horse power, as
ell AS furnishing considerable quantity Of steam for
other purposes.
Though the idea Of this simple generator is not new
If is claimed that some improvements have been made
in its application
In lis operation the feed-pump, which is connected
with the lower end of the coil, is kept constantly at
work, forcing in at every stroke small qusntEy OF
air and water. With an adequate degree of heat 10
the furnace but little water aecumutes, as Is quickly
thrown into spray, and, passing rapidly round and up
the coil, becomes dry steam.
The alleged advantages Of this over the ordinary
boiler are safety, strength, chespness eomPaetnesS
Eehtness, and durabihiy.
Itis claimed that tube small In diameter and oi
great length could Dot produce disastrous exposoai
for should any violent percussion occur it would
merely burst open iva weakest parts and At once DO
relieved.
Durability is also an important consideration IN
steam boilers gentleman in this city tells Us that he
had in constsDt use for more than twenty years
boiler supply ne at 50 pounds pressure to four
tetp-borse power Avery engine-wheTe, OF course 10
eu,-,f " as ssed-aDd it found that even AZ this
high temperature and pressure the expense Of boiler
retAirs bore DO comparison 10 those where reciprocal
ing epgineswere used.
IL is curious and interesting fact hat tins engine
which worked precisely on the principle OF thai III
vented by Hero more than a century before Cans'
was running in thia city for more than twenty years.
and but recently removed and replaced BY one Of more
modern Invention.