DRY and CLEAN AIR at the RIGHT TEMPERATURE
I/EC
• to control your product quality • to protect a critical operation • to protect apparatus f r o m moisture damage • t o DRY your material or product • t o control packing or storage conditions • t o assure precision in testing or research • to increase air conditioning capacity A i r Condition by the NIAGARA M e t h o d Using HYGROL Liquid Absorbent
This compact method, g i v i n g h i g h capacity in small s p a c e . r e m o v e s moistu r e from air by c o n t a c t w i t h a l i q u i d in a small spray c h a m b e r . T h e liquid spray c o n t a c t t e m p e r a t u r e a n d t h e abs o r b e n t c o n c e n t r a t i o n , factors t h a t are easily and positively c o n t r o l l e d , d e t e r m i n e exactly the a m o u n t of moisture r e m a i n i n g in t h e air. Most effective because . . . it r e m o v e s m o i s t u r e as a separate function from c o o l i n g o r h e a t i n g and so gives a precise result, and always. N i a g a r a mac h i n e s using liquid c o n t a c t m e a n s of
d r y i n g air have given o v e r 20 years of service. T h e a p p a r a t u s is simple, p a r t s are accessible,con trois are trust w o r t h y . Most reliable because...the absorbent is c o n t i n u o u s l y r e c o n c e n t r a t e d a u t o matically. N o m o i s t u r e - s e n s i t i v e ins t r u m e n t s are r e q u i r e d to c o n t r o l y o u r c o n d i t i o n s . . . n o solids, salts o r solut i o n s of solids are used and t h e r e are n o c o r r o s i v e o r reactive s u b s t a n c e s . Most flexible because. ..you can o b t a i n any c o n d i t i o n at will and h o l d it as l o n g as you wish in e i t h e r c o n t i n u o u s production, testing or storage.
Write for Bulletins 112 and 131 and complete on your air conditioning problem.
R E P O R T S
force would require considerable power. Then, to take off from the moon, a sizable initial power unit would be needed for overcoming lunar gravity. Schilt figures that carrying this dead weight safely to the moon's surface would likely be prohibitive. The biggest hurdles, according to Schilt, will be met in the return to earth. Adequate deceleration must be provided to spiral in below orbital speed. For protection against heat from air friction, he visualizes a sealed capsule cabin separated from the ship during fast re-entry into the denser atmosphere. Landing would probably be by parachute. He contends that it is now possible to begin practical plans for manned travel into space. To go to a Martian moon would pose no problem not already being worked on, he explains, and it could take place this century. D.G.W.
information
N I A G A R A BLOWER C O M P A N Y Dept.
EC-4,
4 0 5 L e x i n g t o n A v e . , N e w York 17, N.Y.
Niagara
District
Engineers in Principal
Cities of U. S. and
Canada
REDUCE OPERATING COST of V A C U U M SYSTEMS
Search for new fuel materials puts the bee on earth chemistry
with this "AERO" (air-cooled) VAPOR
CONDENSER
W i t h free air t h e c o o l i n g m e d i u m you use t h e least water, e v a p o r a t e d in the air stream. Y o u save t h e cost and pu m p i n g of large v o l u m e s of c o n d e n s ing water.
Niagara Aero Vapor Condenser. This compact machine may be installed directly above stripping column or vacuum evaporator.
Air-vapor s u b c o o l i n g r e d u c e s mixt u r e e v a c u a t e d from t h e system, savi n g in t h e o p e r a t i o n of stearc ejector or vacuum pump. T h i s air-cooled c o n d e n s e r give., you m o r e capacity than o t h e r types at a substantial saving of steam and p o w e r . W a t e r supply, scaling t r e a t m e n t and disposal p r o b l e m s are e l i m i n a t e d .
easily m a i n t a i n e d u n i t r e p l a c i n g b o t h c o o l i n g t o w e r and b a r o m e t r i c o r surface t y p e c o n d e n s e r .
Y o u g e t p u r e c o n d e n s a t e , an imp r o v e d p r o d u c t ; often m a k e a profit o n recovery of residues n o w wasted. T h e r e can be n o c o n t a m i n a t i o n of y o u r p r o d u c t at any t i m e ; il never t o u c h e s raw water. C o n d e n s i n g , of w a t e r , of solvents o r of y o u r p r o d u c t , is simplified; you have o n e , c o m p a c t ,
M a i n t e n a n c e e x p e n s e is low. Balanced W e t B u l b C o n t r o l p r o v i d e p r e cise, year ' r o u n d a d j u s t m e n t of capacity to load. C o n s t a n t t e m p e r a t u r e , uniform p r o ducts and m a x i m u m p r o d u c t i o n 12 m o n t h s a year are assured. U n i t capacities u p t o 15 m i l l i o n B T U .
Write for full information.
Ask for Bulletin
129R
N I A G A R A BLOWER C O M P A N Y Dept. Niagara 32 A
M i n e r a l Prospecting Goes Chemical
EC-4, 4 0 5 L e x i n g t o n A v e . , N e w Y o r k 1 7 , N . Y . District Engineers in Principal Cities of U. S. and Canada
INDUSTRIAL A N D ENGINEERING CHEMISTRY
I HE old prospector panning for gold was the forerunner of the modern method of finding metals. His search for the mother lode by examining outcroppings has been developed into a science by the modern prospector with his kit of chemicals. It was not until 1946 that chemical analyses, under the guidance of the United States Geologic Survey, were used in place of mineralogical data in the United States. The increasing pressure for finding new minerals with high temperature resistance for jet engines and rockets has given added impetus to geochemistry as a prospecting tool. The search for new fuel materials, such as borax, is being pressed. Earth chemistry is used to find lead, zinc, and copper in our western states. The combinations of metals with metals and metals with gases often give clues to the presence of a more
