Insty-Pac Steam Humidifiers

1 Sheet No. IP-1. Insty-Pac Steam Humidifiers The PURE Humidifier Co. Insty-Pac (patent no. The all-welded design eliminates the use of o-rings and 6,065,740) Steam injection humidifier is job- couplings that may cause leakage and maintenance. engineered to assure highly efficient Steam release The Insty-Pac is designed with punched orifices and is into the air stream. Each humidifier is designed for maintenance free. The header/separator is designed your specific capacity, Steam pressure, and duct size to remove condensate before it enters the tubes. The requirements. The Insty-Pac multiple tube humidifier is tube-within-a-tube design means the desired Steam designed to achieve the shortest possible dissipation jacket is hot only during a call for humidity, eliminating distances in the industry which will meet the most additional unwanted heat gain when no humidification demanding applications.

2 Is required. The increased Steam jacketing area provides a hotter tube which delivers PURE Steam free High quality control valves and actuators assure of condensate. accurate response and metering of Steam flow. If you prefer to use your own valves and actuators, we will The header/separator is designed with internal baffling factory mount them for you. If you have a preference and a stainless steel screen to provide even and quiet for certain valve/actuator combinations, we can usually Steam flow to all tubes. The Insty-Pac can work with supply them with the humidifier. Just another way we either atmospheric or pressurized boiler Steam .

3 Job-engineer the Humidifiers to meet your needs. A variety of piping options gives you the flexibility of Only high quality, corrosion resistant stainless steel is installing the Insty-Pac humidifier in confined spaces. used in the construction of the header/separator and The header/separator can be installed inside or outside injection tubes. the ductwork without the use of blank-off plates. The Insty-Pac requires only one side of the AHU/duct be Steam jacketing around the inner tubes means a accessed for supply and condensate piping. minimal amount of condensate is produced. Only PURE Steam is delivered, free of water or particulate The versatility of the Insty-Pac humidifier will allow you matter.

4 To design them into any system simply, efficiently, and reliably. The PURE choice for humidification Sheet No. IP-2. All PURE Humidifier Co. Insty-Pac (patent no. Specification Sample 6,065,740) Steam injection Humidifiers are designed with Steam jacketed injection tubes and a Steam Insty-Pac Humidifier header/separator. Used in combination with each other, these components ensure the delivery of condensate- 1. The humidifier shall be capable of removing free, PURE Steam , into the air stream. condensate from the Steam by means of a stainless steel supply header/separator, for the purpose of With the Insty-Pac , Steam enters the humidifier through providing condensate-free Steam .

5 The strainer and is stopped at the humidifier control 2. The header/separator shall be designed with an valve. internal baffle to assure equal Steam flow to the injection tubes. The header/separator shall include an On a call for humidity, the control valve opens and internal stainless steel screen to prevent objectionable allows the proper quantity of Steam to flow into the noise due to pressure drop across the valve. header/separator. The unique baffle design within the 3. Steam shall be injected into the air stream through header performs two tasks: First, the direction of the round stainless steel, Steam jacketed injection tubes.

6 Steam is changed which causes the condensate to fall The tubes shall be Steam jacketed to assure out ; Second, the Steam flows through the orifices in condensate-free vapor. The jacketing shall only be hot the baffle plate assuring equal delivery of condensate- during a call for humidity, eliminating unwanted heat free Steam to each injection tube. The Steam then gain when no humidification is required. The Steam travels through the jacketed inner tube. After traveling emission ports shall be precision punched and shall be through the inner tube the Steam fills the outer jacket of sufficient size and number to provide constant and area, thus preheating the inner tube and reducing the uniform distribution of the Steam over the entire width of amount of condensate formed in the system.

7 Any the duct. condensate formed in the inner tube is allowed to flow 4. Injection tubes shall be completely factory with the path of the Steam and drains into the outer assembled and welded to a stainless steel header/. tube. The condensate is then drained from the outer separator, ready for installation and piping connections. tube at the drain line that connects the jackets together. 5. The assembly shall be an all-welded design Condensate is removed from the assembly by the eliminating the use of o-rings and couplings that may factory supplied Steam trap. The PURE Steam is then cause leakage and on-going maintenance.

8 Emitted from the inner tube, through the job-engineered 6. The humidifier shall be designed so that only one orifices, and into the air stream. side of the AHU/duct is accessed for supply and condensate piping. An air blank-off plate shall not be An added benefit of the unique Insty-Pac design is that required. the Steam jacketing is hot only during a call for 7. A normally closed control valve shall have modified humidity, eliminating unwanted heat gain when no linear flow characteristics to assure enhanced control at humidification is required. low demand, shall close off against the Steam and shall be of sufficient capacity as required.

9 The valve operator pneumatic modulating (standard) or electric Figure A Insty-Pac Tube modulating (optional) shall be supplied by PURE. Humidifier Header 8. The humidifier shall be supplied with float and thermostatic condensate traps (shipped loose), pipeline strainer (shipped loose), and duct plates (to seal Control Valve completely at duct opening). Strainer 9. The humidifier shall be a PURE Humidifier Co. humidifier as manufactured by PURE Humidifier Co., Chaska, Minnesota. Trap Trap Sheet No. IP-3. Recommended Quantity of Insty-Pac Injection Tubes Insty-Pac Humidifier Selection When Steam is emitted from the injection tubes, it immediately The valve package and Insty-Pac assembly are ordered separately to condenses into tiny water droplets.

10 As the Steam (fog) travels match the correct capacity for the Insty-Pac humidifier. downstream, the air slowly absorbs the condensed Steam until all the water droplets have changed state back to a gas. Dissipation To properly select an Insty-Pac humidifier: distance is defined as the distance downstream from the face of the 1. Select the correct valve package from Table 1 by referencing Insty-Pac tubes, wherein the visible condensed Steam (fog) has been the Steam supply pressure and humidification load required in lbs/hr. re-evaporated to the extent that wetting will not occur on solid objects such as coils, dampers, fans, etc.