Document 3QQoo7dkbVNGNkXEyD0ZwaqkJ

i.h,p ---------- -- - '..j1%jvv-r------------- You Get Trustworthy Liquid or Gas Cooling With Great Cooling Water Savings from the NIAGARA AERO HEAT EXCHANGER . # You con cool air, gas, water, oils, chemicals, electric and power and process 'equipment, engines, mechanical ^processes with lower cost and really accu rate control of temperature with the Niagara Aero Heat Exchanger. You arc assured of uniform,constant production and quality from any process . . . steady, re* liable operation... lower C09l for more dependable cooling. You can have closed system cooling with freedom from scale,, dirt, corrosion and maintenance troubles. You can accurately cool more thon one type of liquid with one machine. The Niagara Aero Heat Ex* changer uses atmospheric air to cool liquids and ga6es by evap* orative cooling. You can remove heat at the rate of input to keep accurate control of gas or liquid temperature. You con put heat back into the system to save the losses of a "warm-up" period or to equalize the effect of load variations. Great savings in cooling water and savings in piping, pumping and power return the cost to you quickly. The Niagara Aero Heat Exchanger can save you approx imately 95$j of your cooling water cost. Write for Bulletin 96. NIAGARA BLOWER COMPANY Over 39 Yean Service in loduiiriil Air Engineering Dept. P, 405 Lexington Ave. New York 17, N. Y. Expcritnetd Diilrici Engineer* in alt Principal Cititi of US. and Canada yjo More TECHNICAL BRli ' Si* toils of instrumentation, |},c system end calibration tecbawl1 The figure is o flow diagriQ* laboratory. Hie widely varied l water quantities are obtained justablo-blade propeller pump^ tion may be influenced by the ^ water. To keep the air content during tests a reiorber is oied.'tv a large lank where the vster^'g pressure (or considerable titne^1 air which comes out of solution^ low pressure In the turbine ntns< dreft tube may be resorbed. 'TJ From the main outlet of the rL the water goes through one of turi-meter tubes. The plstont**^ tank is about 10 It in diameter.^ ft high in which model turbine;i,, 16-In. throat diameter are pljttj] testing. A large part of the enerf plied by the pumps is not abi the turbine and heats the culating In iho system. Cooling^, ment is installed in the resorbertfl the weter temperature obout cotu ASME paper No. 52-A-95. by Feature--and you'll know WHY AMERICAN CRUSHERS can reduce coal for less than ONE CENT per ton Americao^eature No. 1 Recent Developments end PregnS Air Pollution Control. By A D Bn Bethiehem Steel Co. The effects of air pollution 3 divided conveniently into bvs, groups. They ore (1) nuisanc^i7! XteliV"" ORIGINATED THE ROLLING RIN G PRINCIPLE J -- p CRUSHING AND THE PATENTED SHREEDDER RING economic, (3) effect on health, (4F vegetation, and (5) on animals.;') year* ago, American originated the ROLLING RlhJ The nuisenee aspects of air palmW| [?UhJGjHlE..of Crushing which gove coat mines and pow| ero well known. It is very cwafflrfjli ^icnljq'flswand more efficient crushing system. Manganese. Bhave action brought agoinst an Indian] by a community, by on individual,orR] iVqM.'free on shofls and ore held in outward position by jMugol force of the rotor. Cool enters the cashing another industry because of an slhffl nb;.'ahd it struck by the rings in lutpenskfn, which nuisance created by atmoaphericvjgl discharged by the Industry. These agMj MonerTond iplils the cool before It reaches fhe^dreofcer and are sometimes very difficult to arb'S] or adjudicate because of the ^hip/jnciple was further improved bydftie development lack of meaning of scienlifia dtU. whet point does atmospheric polk become a nuisance? Even if s cstjjfj study is made of the concentrslisa: gases and solid malarial in the sir"gj -of the amount of dust fell, at whet does it constitute a nuisance? Other familiar effects of air poltijjS are economic.in character. As esrlHj 1912 one investigator eatimated jjjf smoke and gas in the air in the dt!, Pittsburgh cost its inhabitants 110,090,000 annually, ft has been S @LthSfAmerfcofs Shredder Rings (shown at tho right) with tjliA^manganeie cutting edges that split Ihe cool instead it, resulting in a minimum of fines ond more vnl^rI^c^pl'dting. When encountering non-crushable materiel, ,e> twlng bock on their shafts, thus avoiding teperffom tramp metal. There are no shear pins, cams, i cou,# breakdowns and the rings ere reversible JSfJfib*! life. RoMinO Ring Crushers operate efficiently at iti^f.lP^eedi resulting In major savings In power consumption ^.^^|n!nofica os waff os producing a better product. mated that the air pollution In St. IfiS prior to 1940 cost the inhabitants el,4sL. city about 114,000,000 annually.*I*.SM| economic losses caused by air peltyMi PULVERIZER COMPANY is costing the United Slates sn-'fflB moled 31,500,000,000 annually- Mjll hardly be denied that che JsufldrMffi 3s higher in grossly polluted *****$4 1349 Mackllnd Ave. St. Loufi 10. Mo. Jin those having teas pollution, *nk'!3 POWER PeDRUAtt-.l