Think about the many options available to install a boiler. An electric steam or hot water boiler is quiet, the most efficient, and has no chimney
to install. Electric Steam Boilers Part of the system could include a closed return steam system provides for the direct return of condensation from the piping and process back to the boiler pressure vessel. It is a thermodynamic cycle that utilizes
the gravity return of the condensation (water).
The advantages of such a system are:
• No steam trap nor condensate tank
• More energy efficient
• Cleaner water
• Simpler operation
• Less space required.
A closed return system consists of a steam boiler, vacuum breaker (to avoid overnight flooding), steam piping to the steam application, condensate piping (no trap) from the application, and check valve. Same applications are: single utility press; single steam jacketed kettle; short piping run far irons, humidity, etc.
Consider how you will remove sediments from your boiler: Unvented Boiler Blowoff Equipment
The blowdown tank is designed to prevent high pressure steam and water from entering into drains and possibly scalding someone. Therefore, it is provided with a chamber that will allow the blowdown water to cool before discharging and allow the steam flashed from the blowdown water to vent to atmosphere.
Our blow down tank accomplishes this by:
• Cooling: The bottom half of the tank is full of cool room temperature water at all times. When the boiler blowdown valve is opened, the hot water from the boiler displaces (moves) this cool water out the overflow to drains. The hot water will then cool to room temperature after sitting for several hours
• Pressure: A large vent to atmosphere is provided on the top of the blowdown tank to allow the steam flashed from the blowdown water to vent to atmosphere. It is important that this vent be piped so that the steam will not discharge on any person.
• Mounting: Mount on the skid provided so that the blowdown tank is portable.
• Drain: Pipe this to floor drains (or to a bucket).
• Fill: Put water into the tank up to the drain fitting (approximately 4 gallons/ 15 liters).
• Vent: Thread a pipe up from the fitting to a safe discharge area.
• Blowdown inlet: Connect the flexible stainless steel braided hose from the boiler blowdown to this.
Ensure that the tank has "cool" (120 degree F/49C maximum) water in the bottom half (up to drain fitting). Connect the flexible stainless steel braided hose from the boiler blowdown to the blowdown inlet. Place a bucket under the drain outlet. Open the boiler blowdown valve for ten (10) seconds. This completes the blowdown.
The most dangerous part of any steam boiler is discharge of the water either through a broken fitting, gauge glass, or blowdown valve. When the blowdown valve is opened, it will shoot hot, scalding water for at least 20 feet (6 meters) unless it is properly piped to a blowdown tank. Be careful and ensure the maintenance people fully understand the danger and operation.