Los Angeles herald., 1908-06-21

merchandise in a superior manner, all
of these conditions being met anc
| largely augmented by the use of the
modern system of heating and ven
tilation which is being installed in this
store building. A brief description OF
this system will make these claims
readily apparent.
| The mechanism of the heating and
ventilating system is located in the
attic and on the roof of the immense
| building and consists in general of the
| following:
Tristan air washer, whose purpose
| is to thoroughly wash and purify the
air that Is drawn into the building be-
| fore 1t reaches the immense fans that
are to force it to every portion of the
structure.
Second-There are number of i'm
mense centrifugal ventilating fans that
| draw the air in from the altitude of the
roof through the air washer and then
deliver the purified and humidified air
to the distribution system of ducts and
| plenums.
Are Driven by Motors
| These fans each are driven by speedy
electric motors so arranged that they
can be varied in speed to suit the vary
| ing conditions of demand.
Third-There are great banks OF
| Sturtevant pipe radiation built in to
batteries Of heating coils and arranged
so that the air from the fans may be
| driven either through the coils and
| heated by contact with the pipe coils
or it may be by-passed around the
coils and delivered to the distributing
system cooled and humified by it's pass
/ age through the air washers.
! Fourth-Each portion of the building
! is controlled b. the thermostat AM
the various devices constituting a sys
| tavx. r.fo IL so no
! different volumes of warm air and COO
| air may be mixed and tempered so as
| to produce mixture of the proper tenn
perature to maintain a fixed hygeniC
temperature in each portion of the
building, the greatest permissible varia-
| ton In temperature at any named loca-
ton, being five degrees f.
Fifth-Through the building each
space between ceiling and floor con-
stituting the Theoretically sealed air
plenum. is connected with the air sup
ply and the regulating system so that
constant volumes of fresh, pure air
of a predetermined temperature will be
constantly supplied to each one of
these pressure chambers.
| Chambers Are Perforated
Sixth--The pressure chambers To-
Gated in the ceiling Of each floor are
perforated by numerous openings COW
| cred with suitable ornamental screens
and arranged so that the air will be
distributed uniformly over the entire
space Of each floor and the velocity
and rate Of flow can be reduced and
controlled so as to absolutely prevent
| drafts and make the flow of the air
imperceptible to the most sensitive
person.
Seventh-The operation of the sys-
| tenn is such that when all of the doors
and windows are kept closed as they
would be normally, the building itself
will be full of fresh, pure air, which
will be delivered and maintained under
a slight pressure so that in case door
or a window is opened the tendency of
the air supply will be to rush outward
to the lower air pressure outside. This
air pressure carried within the build
| ing effectually prevents infiowing
drafts from the street. carrying dust
and sand and thus prevents the injury
to fabrics and merchandise which Is
naturally resulting from this source in
other buildings.
In addition 10 that all the air that is
supplied for use In the room is taken
| from the altitude of the top of the
building and Is washed and cooled or
| heated as the season of the air de-
mands. before 1t, is delivered to the
System Of Vents
Eighth--In addition to the means for
supplying the air there Is a system of
vents and vent fans by which the vi
| tiated air Is drawn away at the floor
line Of the various floors and is finally
| delivered outside of the building
through the vent stacks and vent out
let's.
l. In addition to the ventilating system
for the entire building there are sew
leral separate systems for various spe-
cia1 purposes, among which Is the
special ventilating system for the res.
| taurant and kitchen, also a special
ventilating system for the auditorium
There is also a separate high pres
sure suction ventilating system con-
| nected with each toilet room in the
building, ana even away down in the
engine room and boiler room there IL
la bountiful supply of fresh, cool air
l supplied to the workmen, located there
SO that. these usually uncomfortable
rooms will be entirely habitable and
really comfortable.
J. This system was designed by and is
! now being Installed by the Machinery
and Electrical company, heating and
ventilating engineers, located at 351-
35s North Main street. Los Angeles,
| who already enjoy fiattering reputa-
1 ton of successful installations of this
type of apparatus. although this is
| the largest single installation that they
have ever undertaken.
System No Experiment
] The system. however, involves moth
| ing experimental except its size, but
the large area to be covered and the
large volumes of air to be handled in
troduced a number of difficult prob
lens to solve
Some idea of the size of the plant
! may be gained by stating that the vol