DSH
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ADCA DIRECT STEAM INJECTION HUMIDIFIERS DSH DESCRIPTION The ADCA DSH series of direct steam injection humidifiers are designed to ensure highly efficient and moisture free steam injection in air ducts and AHU for humidification purposes. These units are completely manufactured from corrosion resistant stainless steel, and are available as plug and play packaged solutions or alternatively as individual components to be incorporated into humidification systems. Each humidifier is manufactured as a bespoke solution to meet flow requirements and duct design with single or multiple injection tube design. OPERATION Steam moves in the supply line passing through a strainer to remove solid particles and, if necessary, through a pressure reducing valve to reduce it to humidification pressure (generally around 1 to 2 barg). Steam then passes through a S16TSS centrifugal humidity separator which removes any remaining finer particulate matter and most moisture content. The separator special design dries the steam which is injected and also the steam which feeds the heating chamber keeping heating temperatures stable. As steam leaves the humidity separator and passes through the jacketed injection tubes it is kept at a constant temperature, preventing condensation to be carried over with the steam. Condensate collects on the bottom of the separator and is removed from the system at saturated temperature via a FLT float and thermostatic steam trap. Condensate which forms inside the injection tube heating chamber is removed by means of one or multiple steam traps depending on the case. An ADCATrol globe control valve equipped with a fail-safe electric or pneumatic actuator provides accurate modulation of flow and, thus, precise humidity control. Single tube humidifier Injection tube MAIN FEATURES Quiet and efficient. Complete stainless steel construction. Bespoke injection tubes to meet flow requirements and duct design. Fully jacketed injection tubes providing moisture free steam injection. Use of ADCA highly efficient and proven centrifugal separator specially designed for the application. Fully assembled in a plug and play package. Sanitary design to ADCAPure standards. See IS DSHS.15 (Technical information) for further details and other surface finish options. Saturated steam. USE: AVAILABLE DSH10, DSH25 and DSH30. MODELS: INJECTION TUBE 1/2", 1" and 11/4". SIZES: Humidity separator CONNECTIONS: INSTALLATION: Female threaded ISO 7 Rp or NPT. Flanged and special connections on request. Horizontal or vertical (pointing upwards) installation in horizontal air ducts. Horizontal installation in vertical air ducts. See IMI – Installation and maintenance instructions. VALSTEAM ADCA We reserve the right to change the design and material of this product without notice.

ADCA ABSORPTION DISTANCE Absorption distance is the dimension from the injection tube outlet to the downstream point where steam has been fully absorbed by the air passing through and is no longer visible as mist. The absorption distance serves as base for the calculation of the minimum distances to any obstacle (e.g. branches, filters, ventilators) installed downstream. If such obstacles would otherwise be located at a shorter distance, unabsorbed steam would hit those parts and condense, causing dripping which often results in microbial growth and, consequently, odors and an overall...

ADCA HOW TO SIZE Example 1 – Single-tube humidifier Installation position: Inside a horizontal air duct with 2000 mm of available downstream distance without obstacles. Duct size (H x W): 500 x 800 mm Maximum humidification load: 100 kg/h @ 1 barg Step 1: Select the injection tube model A single-tube humidifier is appropriate for the required absorption distance (see Note). According to Table 1 a single DSH25 injection tube respects the maximum humidification load as it ensures 158 kg/h for an insertion length between 600 and 901 mm. Step 2: Select the humidity separator The humidity...

ADCA Example 2 – Multi-tube humidifier Installation position: Inside a AHU with 500 mm downstream distance to fan entry AHU size (H x W): 1600 x 1600 mm Maximum humidification load: 180 kg/h @ 1,5 barg Step 1: Select the injection tube model and quantity A multi-tube humidifier is recommended in order to ensure complete steam absorption before reaching the fan entry (see Note). According to table Table 4 a total of three injection tubes are recommended for a AHU height of 1600 mm. Their nominal size can then be selected according to Table 3. In this case, a set of three DSH25 will ensure...

ADCA INJECTION TUBES B Cover plates CE MARKING – GROUP 2 (PED – European Directive) ØF DUCT WALL LIMITING CONDITIONS Body design conditions PMA – Maximum allowable pressure TMA – Maximum allowable temperature DSH30 11/4" 11/4" 122 177 112 16 980 - 3100 76 17 8,5 * When thermal insulation is present, this dimension must be increased accordingly. ** Tube insertion length to be defined according to customer requirements (e.g. duct width). *** To be confirmed after exact length is defined. STEAM EMISSION DIRECTION Steam injection should be against the air flow. On vertical air flow...

ADCA S16TSS HUMIDITY SEPARATOR A * For certified values, consult manufacturer. Weights refer to threaded versions, other versions may have slightly different values. ** As standard, in separators manufactured with ISO 7 Rp threads or PN 16 flanges, the drain connection is also female threaded ISO 7 Rp. In versions with NPT threads or ASME Class 150 flanges, this connection is also female threaded NPT. BODY LIMITING CONDITIONS * ALLOWABLE PRESSURE CE MARKING – GROUP 2 (PED – European Directive) PN 16 RELATED TEMPERATURE * Rating according to EN 1092-1:2018. ** PMO – Max. operating pressure...

ADCA ACTUATOR Choice of fail-safe spring return electric actuator or ADCATrol pneumatic diaphragm actuator Steam fed to the heating chamber is previously dried to ensure stable temperatures and higher efficiency ADCA HUMIDITY SEPARATOR Specially designed S16TSS centrifugal separator dries steam used for both injection and heating ADCA DSH INJECTION TUBES Full jacketing provides continuous ADCA STEAM TRAP heating and immediate re-evaporation throughout the injection tube length Immediate condensate discharge at saturated steam temperature by means of a FLT float and thermostatic steam trap...