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

Entering the US Sustainability Sector from India

  1. Define Your Role & Value Proposition Clarify how you want to contribute: Are you a technical expert (e.g., engineer, data analyst, ESG consultant)? A creative (e.g., communications, content, design)? A strategist (e.g., research, business development, supply chain)? Sustainability is broad , covering: Renewable energy Carbon accounting ESG reporting Circular economy Sustainable agriculture Green finance 🎯 Action : Identify 1–2 niche areas where your background, skills, or passion align with the sector. 🌐 2. Start Freelancing or Volunteering Remotely Many U.S.-based startups or nonprofits need remote, international talent —especially in sustainability. Where to find them: LinkedIn Jobs : Filter for remote + sustainability . Climatebase.org : The best sustainability-specific job board. AngelList Talent : For U.S. climate tech startups. Catchafire.org : Volunteer remotely for U.S.-based social impact orgs. 🎯 Action : Apply for part-t...
Post a Comment
Read more

Advantages & Disadvantages of Hydroponics

 https://www.trees.com/gardening-and-landscaping/advantages-disadvantages-of-hydroponics by Amanda Brahlek | Professional Gardener – last update on January 16, 2023 Over the last decade, people’s interest in how their food is produced has increased greatly. More consumers want “safe” food that’s been produced with sustainable, mindful growing practices and is free from pesticide residues. As a result, more consumers are choosing to grow their own food and many are exploring hydroponics for doing so. If you’re thinking of embarking on a hydroponics project, you’ll first need to learn the fundamental concepts of growing plants hydroponically. On this page, you’ll discover the basics of hydroponics as well as the advantages and disadvantages of using a hydroponics system. What Is Hydroponics? Hydroponics is a method of growing plants indoors without using any soil. Instead of pulling mineral nutrients needed for growth from the ground, plants get all of their ...
Post a Comment
Read more

Top Green Energy Companies in Kolkata

 Kolkata hosts several prominent green energy companies contributing to India's renewable energy sector. Here are some notable firms: Vikram Solar Limited Kolkata, India Established in 2005, Vikram Solar is one of India's largest solar module manufacturers, with a 3.5 GW annual production capacity. The company specializes in solar photovoltaic (PV) module manufacturing and provides engineering, procurement, and construction services, along with operations and maintenance of solar power plants.  CESC Limited Kolkata, India CESC is a flagship company of the RP-Sanjiv Goenka Group, responsible for electricity generation and distribution in Kolkata and surrounding areas. The company has diversified into renewable energy, operating a 9 MW solar project in Gujarat and a 50 MW wind project in Rajasthan, and is developing hydro power projects in Arunachal Pradesh.  KSL Cleantech Limited Kolkata, India KSL Cleantech is a leading solar engineering, procurement, and construction (EP...
Post a Comment
Read more