Show BY to ater economizing devices at t the ewald nine oba MILTON matoh L OGLESBY cs M SC believing that a description of the plant for saving water at the emerald mine in tin tic district would be of interest to those of the mining review readers who are contemplating the erection of power plants or who have plants already erected in districts where water is not easily obtainable and is in conse quence expensive I 1 have therefore ventured to request some of your valuable space while the actual plan in use at the emerald differs slightly from that shown in the cuts here the essential principles are the same viz the condensation of all the exhaust steam by the means of a stream of cold water introduced at some point in the exhaust pipe the cooling of the resulting hot water in order to supply a constant source of cold water for further condensation and the purification and separation of the water from oil in order to avoid introducing the latter into the boilers briefly then the apparatus necessary consists of a condenser preferably of the ejector type as requiring no air pump and as being able to automatically adjust itself to large variations in the load of the engine a hot 41 F ea ik WATER COOLING TOWER corthe EMERALD 1 1 1 1 1 1 ta C water tank which can also act as an oil separator a water cooling tower and a cold water tank the latter preferably placed under the tower there will also be required a pump for circulating the water from the hot water tank to the top of the cooling tower lower but this can also act as the boiler feed pump the cold water can be made to flow to the condenser by gravity if it is not desired to maintain a vacuum in the exhaust pipe a simple jer jei condenser r with open drain pipe can ve be used this is the form in use at the Etner ali er and will be described g slit consists of a one inch pipe leading ink b the three inch exhaust pipe at a tee them thee dot of the small pipe being capped with a ros ar nozzle the cold water is introduced cle this small pipe and passes down elac oc steam in a number of very fine streams thor ere ree hughly mingling with the steam and coddens con dens ing ina it the resulting hot water being drained dr vs off at the bottom into the hot water tank ani at oil separator id this latter consists of a large wooden lox bol alc ti of 2 inch lumber lined with thin galvanized galvanize iron and divided by partitions into three COB roc apartments part ments the first of these partitions goes goa to within a short distance of the bottom i while the second comes to within a few inches of the top both of these partitions are an near one end leaving a large compartment it at the other end free for storage purposes the iii hot water is led into the small compartment at one e end nd and must pass down und underneath under erneA neat the first partition to get into the second compartment part ment most of the oil however by reason of its lighter gravity will remain on the surface whence it may be skimmed off from time to time and af after ter filtering will be found of excellent quality for further cylinder lubrication some of the oil is however carried over into the second compartment and must busst be eta taken elou out esel else it aou would evenda eventually y find its way into the boilers to cause trouble for this reason ethe second compartment is provided with a screen or perforated diaphragm at the bottom and is filled with straw to act as a filter with a second screen at the top to prevent the straw from washing over into the third compartment an overflow pipe is run into the third compartment 6 jj short distance below the top of the second partition in order to prevent the water from ever backing up to that level the pump is piped in near the bottom drains are also provided for cleaning out the filter by the above apparatus ap aratus the water is thoroughly sep abated from the oil carried over from the cylinders by the exhaust steam and rendered perfectly fit for boiler feed the cooling tower is constructed of libb aig 14 inch steel angles with horizontal braces of ii inch angles and diagonal braces of 1 I inch tw round iron provided with turn buckles lor for tightening this is built directly over the storage tank as shown in the cut and both tot are P placed I 1 aced on a ridge above the hoist houe bouse so that the cold water w will ift flow by gravity to t the condenser the hot water is pumped to the top of the tower and from there feol flows down over screens in a thin film to the bat D tank taia torn where it falls into the storage these screens are of common fly screening 0 about 10 mesh and square feet T the h water wa surface measured on one side in flowing down presents a large surface to the atmosphere and is very rapidly cooled ba evaporation of a part of it the temper re ire at the top of the tower will be near the ling point and on aco a cool day the steam sing from it will almost hide the top of the fer yet at the bottom where it falls into s storage tank it will not be above 90 to degrees jar far from the storage tank unlined Ut lined above the cold water is drawn off gravity to the condenser again and the ie repeated it has been found by elpe nee ace that the thin film of water on the eena cl clings ing s very tenaciously and it is alst impossible for a wind to blow it off uni it is a side wind this latter can be eded against by small wind breaks placed he sides of the screens and extending in top to bottom if the distributor then i the water run on in a thin stream the I 1 width of the screens no loss will occur in blowing off and the only extra supply vater ater required is that to take the place of kage asage and the evaporation from off the ien een a small amount as will be shown ir er one pump is all that is necessary to supply boiler and keep up the circulation it st at be capable of handling r however about nty times the amount required for boiler hof ovll condensing plants plant d as that much cold water is ordinarily reed by the condenser this latter amount ends however on the pressure of exhaust the temperature of the co cooling olinc water I 1 also on the vacuum obtained at the erald a simple arrangement ot of the piping been adopted so that by the manipulation anly one valve the water can be directed he top of the tower or passed through a ter iter into the boiler as desired the water ng already quite hot when it is pumped the heater is ia at a boiling point when it ches bes the boiler thus materially saving in coal bill and boiler repairs the hot acer er tank is placed above the level of the app P so that no difficulty in suction esex is ex fenced this hot weiter water tank should be id d with galvanized iron as described above the reason that it will be found impossible pep it tight with the hot water in it if this ot done now ow for the practical results as these are post most interesting of all during the three previous to the installation of the it t our water bill averaged per th ith we get our water from the mam w I 1 h mining co for foi one half cent per gallop while during the three months succeeding and under almost identical conditions of borki underground the bill averaged only 1120 per month showing a monthly saving of the total cost of the apparatus was not much over so that it paid for itself in less than a mont month handa and a half the above plant is small it is true but there is nothing to prevent the application of the above principles to larger plants agthe as the installation of water cooling towers in large plants all over the country by experienced engineers proves ogden shareholders in the keystone mine in gold mountain district are feeling elated over assay returns from samples of ore recently brought from this promising property the average of a four foot vein showing values of in gold and four ounces in silver to the ton houst n za pa P of oil 11 col nich and major matt daugherty of the wabash of park city are more than pleased over important disclosures made in the workings of this promising property of late a blind yein vein having been struck in the crosscut cross cut drift that gives promise of great things in the future of the mine and by some it is believed that this is the extension of one of the faulted ledges of one of the marvelous veins of one of the rich mines of this magnificent camp As soon as the find has been more thoroughly explored the mining review will give in detail the value of the discovery As it is we believe that col and his associates have struck it rich some very high grade ore has been received in the city of late from the sheba mine in humboldt county nevada in which judge ag G W bartch of this city is heavily inte interested resEed assay tests on some of the samples showing metallic values running as high as 2260 ounces silver and 22 in gold to the ton A large amount of work is being done in the systematic development de of this old time bonanza |