1.
What type of humidifiers are included in the Fideris product line up?
Humidifiers can either be designed to maintain a target dewpoint in the gas stream or a target water contact.
For dewpoint type humidifiers, we manufacture both a bubble type (for lower flowrates) and a saturate-and-trim humidifier for larger flow rates.
For water content humidifiers, we select components from our Innovator Series of plug-and-play test equipment modules to provide liquid metering and flash evaporation.
|
|
top
|
|
2.
Can the humidifiers control heated transfer lines?
Yes. The FiderisTM steam injection humidifiers are equipped with temperature controlled receptacles for use with heated gas transfer lines. Control of heated transfer lines is also available on the Bubble Humidifier and is recommended for all but a few applications.
|
|
top
|
|
3.
Do I need to use FCPowerTM software to control the humidifer?
For the Bubble Humidifer, the answer is no. It can be operated as a stand alone unit, with Labview, with temperature controller software from Omega, or with FCPowerTM software. For the Steam Injection Humidifiers, the answer is yes. FCPowerTM software allows for system wide control of all members of the FiderisTM Fuel Cell Test System family as well as additional support equipment.
|
|
top
|
|
4.
What is the difference between bubble humidifers and steam injection humidifiers?
The FiderisTM bubble humidifier is fairly typical of sparger type humidification. The reactant gas is introduced at the bottom of a water reservoir through a frit or diffuser. As the reactant gas bubbles to the top, it reaches thermal equilibrium with the water reservoir and absorbs water from the reservoir. The temperature of the water is controlled to control the exiting dewpoint of the reactant gas.
In a steam injection humidifier, the water is flash evaporated on a dry surface an the resulting steam engaged with the reactant gas. Sufficient heat is transferred to the reactant gas so that the reactant gas temperature is raised to that required to entrain all of the steam being generated. This method of humidification results in a saturated gas stream exiting the humidifier at its dewpoint temperature.
More information about the differences between the two types can be found in the FAQ section of the steam injection humidifiers.
|
|
top
|
|