BALL ROOM AND MAIN AUDITORIUM, HOTEL GIBSON. cialty Company, of Cincinnati, acts as a receiver for the condensation from the heating system and high pressure drips, and also warms the "make up" water with exhaust steam. Duplicate 72-in. x 42-in. x 10-in. Worthington duplex pumps feed the boilers from the heater. Electric power and light are furnished by three generating units, one 150-K.W. for small loads and two 200-K.W. for heavy loads. The overload capacities of these units are such that any two can handle the maximum load in case the third is out of commission. The generators are wound for 250 volts direct current and were built by the Triumph Electric Company, of Cincinnati. Each is direct-connected to a steam engine of the releasing gear Corliss type, built by the Hoover, Owens, Rentschler Company, Hamilton, Ohio. The hotel is so wired that all motors: Alberger Condenser Company, utilize exhaust steam for supplying hot water to plumbing fixtures. The water temperatures is maintained constant by thermo stats. The boiler room is some 20 ft. below the city sewer level, so that sewage ejectors in duplicate had to be installed. These were furnished by the Shone Co., Chicago. Each consists of a normallyvented cast-iron receiver into which sewage flows through check valves until a certain level is reached, at which point a float operates a valve mechanism which closes the vent and admits compressed air to the receiver, thus forcing the sewage up to the city sewer. At a certain low level the action of the valve mechanism is reversed and the apparatus is again ready to receive sewage. Duplicate motor-driven air compressors supply air at 50 lbs. pressure for this purpose. The refrigerating apparatus consists of two steam-driven Triumph ammonia compressors and the necessary auxiliary BOILER ROOM, HOTEL GIBSON, SHOWING FRESH AIR INLETS. apparatus for the production of 25 tons. of ice per day as well as to furnish refrigeration for the various cold storage rooms, ice boxes and refrigerators throughout the entire building. In addition, an ice-water equipment and circulating system supplies service rooms. each floor and the fountains in the public rooms of the hotel. FRESH-AIR SUPPLY SYSTEM. The basement, first floor, mezzanine and second floor which contain the large public rooms are heated and ventilated by the hot blast system. The three main ventilating units are 15,000, 16,000 and 18,000 cu. ft. of air per minute capacity and each consists of a multivane fan built by the American Blower Company, and driven by a variable speed motor. The fans draw air from a common shaft. through Vento tempering coils having a capacity for warming the air about 50° F., thence through an air washer where all dust, dirt, etc., are removed and a proper degree of humidity or cooling imparted as the season may require. The air next passes through Vento reheating coils from which the fan delivers it to the rooms through metal ducts. Thermostats suitably located maintain areas supplied by each fan through control of the exhaust steam to reheating coils. All thermostatic devices were furnished by the Johnson Service Co., Milwaukee, Wis. PROVISIONS FOR COOLING AIR IN SUMMER. The installation of elaborate air conditioning apparatus is an index of just how careful the owners have been to provide every modern device making for the comfort of their patrons. The air washers were of a special design so as to permit of cooling the air in summer by means of ice. Each air washer consists of a casing enclosing a series of nozzles from which issues a maze of mist and fog. The air is drawn through this spray and cleansed of all solid matters. The excess moisture is removed from the air as it passes through a series of horizontal baffle plates forming the eliminator. The moisture removed is returned to a special tank extending under the entire washer, from which it is drawn through a brass strainer by means of a centrifugal pump and returned to the spray nozzles at a pressure of about 20 lbs. The air washers are constructed of ONE OF THE AIR WASHERS, HOTEL heavy gauge galvanized American ingot iron braced with galvanized angles throughout. The brass spray nozzles are of a type which utilize centrifugal action and interference of water jets to secure fine atomization of spray water. Within each nozzle is a spirally cored interior which divides the water into two separate streams which leave the cored interior tangentially and at diametrically opposite points; the rotary motion given the two jets as they strike the interior of the nozzle housing coupled with their interference in the throat of the 3/16 in. nozzle orifice breaks up the spray water and forms a cone-shaped mass of fog. The generous discharge orifice and ample strainer facilities are designed to prevent the clogging of the nozzles and the impairment of efficiency thereby. Glasspanelled cast-iron doors set in the casings. afford means of access to and inspection of the interior. ARRANGEMENTS FOR COOLING AIR IN SUMMER. The tanks under each air washer are of special depth for the reception of refrigerating coils and in addition have an extension at the side for the reception of ice during periods of extreme hot weather or on the occasion of large as AIR WASHER ROOM, SHOWING CIRCULATING PUMP AND WATER AND AIR RELIEF VALVES FOR DRIPPING HEATER. semblages in the rooms to which air is supplied. The ice compartments have hinged lids insulated with mineral wool, and are water-sealed from the main body of the tank so that the compartments may be filled or inspected while the apparatus is in operation without ingress of air from the basement. |