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The compressed air system is used in various commercial and industrial applications. Some of the uses of compressed air systems are:
Scroll COMPRESSED AIR SYSTEM As per NFPA99 latest edition/ HTM-2022/02-01 /EN/DIN/ISO 7396-1 Oil free scroll Compressed Air System to provide total system capacity (running + stand by) 6500 LPM to be delivered to the hospital along with allied equipment, suitable tank and control panel The Skid Mount oil less Scroll Medical System is designed to provide medical breathing air. The plant multiplex oil-less scroll air compressors with one ASME tank, two medical desiccant air dryer system, safety & Pressure gauges, two set of four stage filteration system for breathing air, one dew point monitor, one carbon dioxide monitor and one medical control panel. The complete package will be pre-wired, pre-piped with single point connections for electrical, intake air, discharge air and condensate drain. The Skid Mount oil less Scroll Medical System is designed to provide medical breathing air . The plant multiplex oil-less scroll air compressors with one ASME tank, two medical desiccant air dryer system, safety & Pressure gauges, two set of four stage filteration system for breathing air, one dew point monitor, one carbon dioxide monitor and one medical control panel. The complete package will be pre-wired, pre-piped with single point connections for electrical, intake air, discharge air and condensate drain. compressors will have an integral radial flow fan for cooling and will not require any additional electric cooling fans. Each compressor pump will be provided with an electric drive motor, discharge check valve, a diverter isolation valve, an air cooled after cooler, moisture separator with automatic drain and a high discharge temperature shut down switch.
The system will include an ASME air receiver rated 200 psi MAWP. The tank will be equipped with a pressure gauge, safety relief valve, block & by-pass valves and condensate sight gauge and automatic electronic tank drain with manual override. The vertical receiver will be internally lined with an FDA approved material for corrosion resistance.
The system will include a control panel in an enclosure will be supplied with H-O-A switch, magnetic starter with 3 leg overload protection, high temperature shutdown with audible and visual alarm, hour meter, and compressor run light. Standard features also include a PLC controller, a reserve compressor in-use alarm with visual and audible alarms, an externally operable circuit breaker disconnect, and a redundant control circuit transformers with visual indication of a main transformer failure. All alarms will have dry contacts on a labeled terminal strip for remote alarms. Provide manual reset for thermal malfunction shutdown. All control and alarm functions will remain energized while any compressor in the system remains electrically on-line. The lag compressor will be able to start automatically if the lead compressor fails to operate. The medical air system will include a dual inlet filter system with one filter on-line and one filter in reserve to enable servicing of the filter elements without shutting down any of the air compressors units or disrupting service to the facility. The inlet filter system will be located on the compressor package and plumbed up-stream of the compressor pumps.
The air purification package will be sized in conformance with NFPA 99 specifications and consist of the following: Dual desiccant air dryers, dual filter and regulator bank with sample ports, Dew Point and CO Monitors with alarms, and all bypass piping. Piping to be brass, stainless, or type K copper, and cleaned for medical air use. All components will be mounted piped and wired to the air receiver. Each twin-tower desiccant dryer will be sized for the peak calculated system demand to provide a pressure dew point of Zero degree F. Dryer controls will include a repressurization cycle to prevent shocking of the desiccant bed prior to switching towers. An integral purge saving control system will be provided and will suspend the purge air loss during periods of low demand. When the dryer is in purge control mode, the tower switching valves will not operate, and only one desiccant tower will be on-line. The system-integrated hygrometer will be equipped with an LCD dewpoint display and high dewpoint alarm with dry contacts for remote monitoring. The dew point sensor (probe) will be of a rugged Hyper-Thin-Film Aluminum Oxide type, and installed so that the monitored airflow is downstream of the pressure regulator assembly. The monitor will include a self calibration mode to enable calibration of the dewpoint sensor without the need to return the sensor to the factory for calibration. The carbon monoxide (CO) monitor is provided in an enclosure with LCD display of CO concentrations. The monitor will continuously display the CO content of the discharge air and will provide audible and visual high CO alarms. High alarm is set at 10 ppm as per NFPA 99. Dry contacts are provided for remote monitoring of the high CO alarm.
Total 4 stages of filters will be provided along with the compressed air system as follows: Air filtration The filter housing is a modular design which allows greater flexibility for installation. The modular housing allows filters to be mounted for left or right entry, and are field gangable with optional kits. The Medical Air Micron Line Filter is constructed from high quality aluminum, zinc and steel. The inerior and exterior of each filter housing are chromated and epoxy powder coated for added durability and corrosion resistance. All housings are rated for an operating pressure up to 300 psig (21 kgf/cm2) and tested with a 5:1 safety factor. The filter is supplied with factory-installed color differential pressure gauge, liquid level indicator, and internal automatic float drain. The filters are available with optional external electronic automatic solenoid drain. The Medical Air Micron Line Filter uses a two-stage filtration design that maximizes efficiency and extends the life of the element. The first stage of filtration captures larger particles with alternate layers of fiber media and media screen. The second stage coalesces aerosols and captures solid particles with multiple layers of epoxy bonded, blended fiber media. The large effective surface area of the element ensures high efficiencies while minimizing pressure drop. Each coated, closed-cell foam sleeve resists chemical attack from oil and acids, contains no silicone, and can withstand temperatures up to 150º F(66ºC).
Stage 1: Compressed Air 1 Micron Line Filter (Coalescing & filters for General protection) The Medical Air 1 Micron Line Filter is designed for removal of liquids and solid particles from the medical air stream.
Stage 2: Compressed Air Separator / Filter (Particular filters for dust protection) The Medical Air Separator/ Filter is designed for removal of bulk liquids and large particles from the medical air stream.
Stage 3: Compressed Air Coalescing Filter (High efficiency coalescing filters) -The Medical Air Coalescing Filter is designed for removal of ultra-fine oil aerosols and solid particles to 0.01 micron from the medical air stream.
Stage 4: Compressed Air Oil Vapor Filter (Filter for removal of oil vapors and hydrocarbon odours) The Medical Air Oil Vapor Removal Filter is designed as the final stage of filtration for the medical air stream. The activated carbon filter removes oil vapors for odorless and taste-free air. The maximum inlet liquid load is 0 ppm w/w, with a maximum remaining oil content of 0.003 ppm w/w. The maximum pressure drop at rated flow for dry conditions is 1 psid (0.7 kgf/cm2) and for wet conditions is not applicable as no liquid will be present.
