Skip to main content

Factors to consider while selecting a hydrogen generator

Need some help choosing a hydrogen generator? (restek.com)


As customers continue to switch to gas generators as their main source for hydrogen, we often get asked for assistance to help them make the right choice.  As a result, I decided to write this post to help our customers in their selection.

 
H2Generator

.

In most cases, choosing the appropriate generator is as simple as answering two questions:

 

1.  What purity do you need?  In other words, are you going to use the hydrogen for GC carrier gas, fuel gas, or both?

If you are only going to use the hydrogen for fuel gas (or for some other purpose where the purity is not critical), we suggest a Parker Balston PEM generator.

If you are going to use the hydrogen for carrier gas (where high-purity is critical), we suggest a Parker Balston H2PEMPD generator.

 

2.  What flow rate and pressure is required?  After all, before you can select a generator, you need to have this information.

For most GC set-ups, seldom is maximum output (delivery) pressure critical unless the instrument(s):

A.  Are located several rooms away from the generator where pressure drop across the tubing may drastically decrease delivery pressure.

B.  Are using long packed columns which require high head pressure.

C.  Are using small internal diameter, or very long, capillary or micropacked columns which require high head pressure.

 

In most cases, flow rate will determine which generator you would choose.

A.  In order to calculate the maximum flow rate needed, you need to carefully look at each instrument to determine its total hydrogen flow rate used during peak consumption (which may include fuel gas, column carrier gas, and hydrogen exiting the split vent line).

B.  Once the flow rate is calculated for each instrument, add these up to determine the total flow rate needed for all instruments.

C.  Finally, multiply a buffer factor* of between 1.5 and 2.0 to this total flow rate.

* Example: if you calculated that the total hydrogen flow rate needed for all instruments is 300mL/min, you would want to choose a generator with an output of somewhere between 450mL/min and 600mL/min.  In this case, we would suggest one of our generators which have an output of 510mL/min (note: 1mL/min = 1cc/min).

 

Labels:

Comments

Post a Comment

Popular posts from this blog

Subsidy For Biomass Briquetting Plant Project In India

blog.briquettingpressmachine.com/subsidy-for-biomass-briquetting-plant-project-in-india/ Subsidy for biomass briquetting plant project is the unique feature of this project. The new energy system biomass briquette plant is the great option for need of renewable energy in future. Sustainable energy sources are new expect for future energy sources and that’s why biomass briquetting plant is more preferable in India as well as foreign countries. Government encourages biomass briquette plant project by offering best subsidy plans to buyers. You can find any information of government incentives on biomass briquetting project, here. State Subsidy for  briquetting machine  in India is varies depends upon government taxes. Due to subsidy for biomass briquette plant in India, advantages and profitability of briquetting press machine is great. Being Agriculture country, the current availability of biomass in India is estimated at about 500 millions metric tones per year which is useful as
5 comments
Read more

11 countries leading the charge on renewable energy

https://www.climatecouncil.org.au/11-countries-leading-the-charge-on-renewable-energy/   The need for a swift transition to renewable energy is more urgent than ever. Climate change, driven by the burning coal, oil and gas, is already wreaking havoc on communities, economies and ecosystems right around the world. The easiest, quickest and most effective way of driving down greenhouse gas emissions and giving ourselves the best chance of kicking climate change’s butt is by moving to an energy system based on renewables and storage.  Here are some inspiring countries that are using clever combinations of renewable resources and efficient, targeted policies to drive down their emissions . Sweden In 2012 Sweden reached their target of 50% renewable energy 8 years ahead of schedule. This puts them right on track to reach their 2040 goal of 100% renewable electricity production. How did they do it? By taking advantage of their natural resources and using a combination
Post a Comment
Read more

Solar Cell Manufacturers review

There are essentially 3 types of Solar Cell Companies .The tier 1 comprising top 2% do core R&d and are integrated end-to-end.The experience is more than 10 years. The second line about 8% do not indulge in R&d but use partial robotics etc for manufacturing. They have experience of 2-5 years .The rest 90% are assemblers and use human production lines for manual soldering.The projects however have a good capital output ratio .  Here's a good link to review the top Solar Companies  http://www.forbes.com/sites/uciliawang/2014/12/03/guess-who-are-the-top-10-solar-panel-makers-in-the-world/#2e34708f2812 Solar equipment makers are gearing up to expand production again after many of them had to idle production lines or close factories. So who are the top 10 solar panel makers these days? IHS   released its ranking today that put Trina Solar as the top shipper of solar panels in 2014, followed by Yingli Green  Energy . Both companies are based in China, which ha
6 comments
Read more