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? BATA WITH .REFERENCE TO WATER REQUIRED FOR REFRIGERATION AND AIR COHDXTIONIHO SYSTEMS CONVERSION EQUIVALENT 1 - 3.T.U. • Heat required to raise 1 lb* of water $j$ X dog* F* ? b s ^ isbbratiqi One too of refrigeration is t h e h e a t e q u i v a l e n t to the melting of One Ton of lee at 52° F* In 24 hours* A ton of refrigeration will absorb 200 B*T.tJ* per minute op 12,000 ®*T#t7# per hour* ''?$$?*%$ijji&J When waste water is used to eool a refrigeration con­denser, all the heat which is absorbed by the refrigeration system from the cooled space must be picked up and dissipated by the waste water* When City water at a reasonable temperature of §1| or SO® le used for cooling a refrigeration system a m&ginaMa rlae of 12* can be allowed for water through a refrigera­tion condenser before the head pressure becomes excessive, and the brake horse-power on the motor becomes excessive • The maxi­mum rise in the temperature of the water before it is wasted for efficient operation of the refrigeration system determines the minimum amount of water wasted per ton of refrigeration* All facts are proven by our most simple mathematics as stated above In our standard “Conversion Equivalent of 1 tJ.T.TT." and "Definition of Refrigeration*• For examples ' If one ton of refrigeration is equal to 200 B.f*tJ* per sdri-and 1 B*T.D. will raise the temperature of 1 lb* of water 1 deg* F* and we can stand a 12® rise in the water before It is wasted, we divide 200 B.T*U. by 12° F. 800 * IQ*66 lbs* of water must be wasted per ton of refrigeration, 16*66 lbs* of water w 2 gallons* This is a minimum amount of water wasted per ton of refrigeration* A greater amount of water wasted is the usual . p’ rac:t ' iI, ce\ *I I J p| | I \ ’ . . . * | When a cooling tower or evaporative condenser is used and the water is recovered and recirculated, a much greater quantity1 of water is circulated per ten of refrigeration per min* for the simple reason that a maximum rise of 5* to 10® is the usual practice, but due to the faet that the only water wasted is by evaporation* drift and continuous drain* the recirculating system will saveappradLmately $6$ of-" water’’as compared to the waste water system* Difference of opinion will be expressed by ' some manufacturers and salesmen of oooling tower and evaporative condenser recirculating systems with exaggerated claims up to as high as ©5$ to 98$ of the water saved* These claims are —1—