New “High-Density” Rack: Even More ULT Storage Capacity in the Same Space

By Jim Miller, Stirling Ultracold Chief Revenue Officer

Our 600-box SU780XLE ultra-low freezer already stores the most samples per floor space area of any comparable model. With the new “High-Density” Storage Rack solution, it can now store 100* more boxes in the same footprint! Storing up to 700* two-inch sample boxes, this optional rack solution further increases the freezer’s storage density to 81.6 boxes per sq. ft/m of floor space, which is 35-70% more ULT storage per floor space area than similarly-sized freezer models.

The High-Density Storage Rack is a perfect solution for laboratories and biorepositories with limited space who want to expand biological sample inventories without new construction. The ability to store more samples in a smaller freezer footprint not only reduces your cost per sq. ft/m, but offers the potential of replacing older ULT models with fewer freezers to reduce capital costs.

Considering that the SU780XLE is the most energy-efficient ENERGY STAR®-certified ULT freezer, this new 700-box rack furthers its efficiency per sample. In fact, the XLE uses 20-60% less energy per sample than other ENERGY STAR-certified ULT freezers (energy consumption data source: energystar.gov) in the high-density configuration. This not only enhances energy savings for all users, and potentially reduces the number of units required, but particularly benefits commercial biorepositories by improving profitability with the lowest operating cost per sample stored.

To learn more, download our new High-Density Storage Rack brochure

* To keep the vacuum release port unobstructed on the SU780XLE, it is recommended that one box be removed from the High-Density Storage Rack. This will reduce storage capacity to 699 2-inch boxes in the high-density configuration.

Stirling Ultracold Helps Australia’s Telethon Kids Institute Improve the Lives of Children

By Nicholas A. Pezzuolo, VP of Channel Development

As we expand our global market presence, it’s great when we can share how Stirling Ultracold products are making an impact in regions all over the world. One example from earlier this year is the Telethon Kids Institute in Nedlands, Western Australia which purchased and installed 23 of our SU780XLE ultra-low temperature freezers (see photo to the right) through our distributor partner Bioline Global Pty Ltd. The Institute is located within the Perth Children’s Hospital and is one of the largest research facilities in Australia. Telethon is committed to improving the lives of children through extensive research in childhood diseases, conditions, and issues. Their four main areas of focus are Aboriginal Health, Brain and Behavior, Chronic and Severe Diseases, and Early Environment.

Telethon has also pledged to reduce their carbon footprint by embracing sustainable practices for the well-being of all children in the present and future. We are proud that Telethon chose our reliable, energy-efficient freezers to help them meet their environmental goals.

Ottawa Hospital Reduces HVAC Load & Cost by Replacing ULT Freezer with SU780XLE

by Tim Root, Director of Marketing

At Stirling Ultracold, we’re always delighted to hear stories about our products helping customers save money and achieve their sustainability goals. That’s why we were pleased to see Ottawa Hospital sharing good news about how they saved energy by replacing old ULT freezers with energy-efficient models, including our SU780XLE. As recently reported in their newsletter article, Research deep freezers reduce energy consumption by 85%, Ottawa Hospital Research Institute (OHRI) has already saved about $20,000 in utility costs per year.

Hospital researchers have not only reduced energy consumption and carbon footprint, but were surprised by how quiet the energy-efficient models operate; in addition to how much less heat they generate.

As noted in the article by Brian Cayen, Research Information Services and Operations Manager, replacing just one of OHRI’s old ULT freezers with our SU780XLE model made an immediate impact on HVAC load and comfort in the lab . . .

“The first freezer that was replaced in one of the labs reduced heat generation and allowed us to turn off one of the two air conditioning units, and the temperature in the room still dropped by 2°C.”

With benefits for laboratory, operations and sustainability teams at OHRI, this article cites another real-world example of how Stirling ULT freezers deliver tangible advantages across the entire research organization.

 

Setting the Record Straight on False ENERGY STAR® Claims

ES_Partner_logoRecently, another ultra-low freezer manufacturer “boldly” asserted that their model is the “most energy-efficient ULT freezer.” This very public claim was presented as having its basis in ENERGY STAR® certified test results that are posted at energystar.gov. While we’re pleased to see other ULT freezer manufacturers moving to more efficient designs and joining the ENERGY STAR program, we would like to set the record straight on this matter . . .

It has been confirmed that this competitor’s claim was false and the Stirling Ultracold SU780XLE has been validated by ENERGY STAR as the most energy-efficient ULT freezer. This is not our claim, but is based on the EPA ENERGY STAR calculation that qualifies ULT freezers for certification (version 1.1 specification). Anyone can go to energystar.gov and clearly see that the SU780XLE is the most efficient certified ULT freezer listed (.29 kWh/day/ft3).

Energystar Gov Lab Grade of ULT FreezersScreenshot from energystar.gov (on 11-27-17) showing the SU780XLE is the top Ultra-Low Temperature Freezer listed.

Just Another Untrustworthy Claim

Unfortunately, this inaccurate claim is just the most recent example of ULT manufacturer “marketing” that asserts unfounded energy specifications or capabilities. As I pointed out in the blog post, What’s the Difference Between “Typical”, “Specification” and “Final Test Method”?, others in our industry have confused and obfuscated for years on the issue of ULT freezer energy consumption. That’s why Stirling Ultracold was alone in publicly promoting the ENERGY STAR Final Test Method when it became the de facto industry standard in 2014. We’ve always believed that ULT freezer buyers deserve a straightforward “apples to apples” energy comparison, which is the purpose of ENERGY STAR after all. Isn’t it ironic that we’re still talking about confusion on this issue, even after long-awaited ENERGY STAR certification has come to ULT freezers?

Defining True Industry Leadership

At Stirling Ultracold, we carefully consider the validity of all technical data published in our marketing communications, which is why our products are known for delivering on promised performance in independent tests and daily operation. That’s also why we were the first in our industry to cite third-party, ENERGY STAR test protocol results for published energy consumption. We made this change to our SU780XLE product literature over a year ago to “walk the talk” and model transparency rather than the casual “specsmanship” that has become so prevalent in our industry. As an industry leader we place the highest value on accuracy and integrity to meet market needs.

We’ve said it before and we’ll now say it again . . . No other ULT freezer on the market offers more energy savings than the SU780XLE, and we would be happy to provide SU780XLE test data in the required ENERGY STAR reporting format to back up this statement. Not only is the XLE the first and most efficient ENERGY STAR-certified ULT freezer, but its field-proven Stirling engine doesn’t use compressors that are expected to fail.

Protecting the ENERGY STAR Brand

Stirling has been a strong voice in our industry for ENERGY STAR and we value it as the most widely recognized symbol for energy efficiency in the world. Like any asset with appreciable value, this brand must be properly used and protected. That is why Global Cooling, Inc. (parent company of Stirling Ultracold) has recently contacted the EPA’s offices of Air and Radiation and Civil Enforcement regarding the previously-mentioned false statements. As reported in our letter, several unsupported assertions were made in the public domain on the basis of ENERGY STAR misrepresentations, which are potentially damaging to us, our industry and most importantly, the efficacy of the EPA’s ENERGY STAR brand. You may request a copy of this letter to the EPA by sending an email to epa_letter@stirlingultracold.com

How to Get 15-50% More ULT Sample Storage from Your Limited Floor Space

At Stirling Ultracold, we recognize that laboratories and biorepositories have a limited amount of floor space. That’s why our unique ULT freezer design delivers more storage capacity per square foot than other comparable models, giving you the most use of your floor space. With our compact Stirling engine cooling technology, less than 11% of our SU780XLE’s outer cabinet volume is needed to house its mechanical cooling system. That’s remarkably smaller than compressor deck space required in other ULT freezers, which is why you get so much more storage capacity in a smaller footprint with a Stirling freezer.

How Much More Sample Storage Do You Get Per Square Foot?
Our unique freezer design allows you to store 15-50% more 2ml vials per square foot of floor space (per freezer) when compared to other upright models of similar size.

Here’s another way to look at this . . . With the smaller footprint of our 600-box-capacity SU780XLE, you can place two additional ULT freezer units in a 50-foot row (side-by-side arrangement with recommended clearance), versus competitive models. This equates to a difference in storage capacity of 1,200-2,200 additional 2” sample boxes, or 120,000-220,000 additional sample vials within the same floor space!

Also, the Stirling Ultracold SU780XLE can be placed directly against the walls in your space, whereas competitive models require an additional 6-8 inches behind the freezer for ventilation clearance. This increases our footprint advantage even further. 

Our Stirling engine cooling technology is located at the top of our freezers, inside the green top. This places more racks within easier reach, while significantly improving system access and serviceability. In other ULT freezers, compressor-based cooling systems are located at the bottom of the freezer where service access is more limited.

With our innovative cooling system and unique design, we provide the most ULT storage capacity for your limited floor space, in addition to keeping your samples safer than they’ve ever been.

Stirling Supports ENERGY STAR® and You Should Too

As you may know, Stirling Ultracold manufactures the most energy-efficient Ultra-Low Temperature (ULT) freezers in the industry, using 70-75% less energy than standard compressor-based ULT freezers. Therefore, it’s not surprising that we are in full support of the EPA ENERGY STAR® program and their efforts to promote energy efficiency.

Due to the recent changes in Washington, the ENERGY STAR program, which is run by the EPA, is facing possible elimination. The Alliance to Save Energy (ASE) is an organization that advocates energy-efficiency policies to U.S. lawmakers. The ASE recently constructed a letter of which Stirling Ultracold is a signatory. This letter has been delivered to lawmakers to persuade them to strengthen ENERGY STAR instead of eliminating the program. You can learn more about this by reading ASE’s recent blog post, More Than 1,000 Companies Call For Strengthening ENERGY STAR Program.

Energy efficiency and environmental sustainability has always been who we are, so of course we strongly support the ENERGY STAR program, which has established energy-efficiency standards for so many industries and consumers since 1992. In fact, the laboratory/ULT freezer industry is anticipating its own ENERGY STAR program sometime this year, with our SU780XLE upright ULT having earned the top energy efficiency rating in independent test results reported last year.

If you agree that ENERGY STAR is an important program that should be strengthened, I encourage you to reach out to your local federal elected officials and let them know that you want ENERGY STAR to continue.

University of New Hampshire Test Confirms Stirling ULT uses 70% Less Energy

In the UNH test results, the Stirling Ultracold freezer showed a consistent 70% reduction in power use over the other freezers. Click the image above for more information, as presented in the UNH Research Blog.
In the UNH test results, the Stirling Ultracold freezer showed a consistent 70% reduction in power use over the other freezers. Click the image above for more information, as presented in the UNH Research Blog.

Our assertion that the SU780UE uses one third the energy of standard compressor-based, ultra-low temperature (ULT) freezers might not appear believable.  After all, every ULT manufacturer is claiming to offer an energy-efficient freezer these days. That’s why I’m excited to share a post that recently appeared in the University of New Hampshire Research Blog that confirms everything we’ve been saying with vivid, fact-based test results.

Earlier this year, the UNH University Instrumentation Center (UIC) began a project to evaluate ultra-low temperature freezer technology and associated energy consumption. In the test, the UIC team remotely monitored the energy use of three ultra-low freezers including the Stirling Ultracold SU780UE.

Quoting directly from the UNH blog post, the results of this testing were as follows . . .

“In the UNH UIC evaluation, the Stirling Ultracold freezer has shown a consistent 70% reduction in power use over the other two freezers of varying age and manufacturer while the temperature stability has also yielded marketable improvements with the Stirling.”

The UIC study has led to the drafting of a memorandum that will help move the university toward offering financial incentives for the purchase of Stirling ULT freezers.  The UNH Instrumentation Center continues to develop their knowledge in the area ULT storage technology and is also hosting an Ultralow Temperature Freezer Symposiuon on October 13th 2016 in Durham, NH.

My Green Lab Working with Utilities to Standardize ULT Freezer Energy Rebates

The historical absence of independent, objective, third-party data has made it difficult for ultra-low temperature (ULT) freezer buyers to make valid energy use comparisons. The significant importance of this was suggested in last year’s My Green Lab study, Market Assessment of Energy Efficiency Opportunities in Laboratories, which projected up to 648 million kWh of electricity is being used each year to power -80° C freezers in California, alone! With the EPA’s release of the ENERGY® STAR Final Test Method for Laboratory Grade Refrigerators and Freezers, the test methods are now in place to develop energy efficiency standards for ULT freezers.  Ultimately this will help ULT buyers choose products that truly deliver significant energy savings, and enable research organizations to take full advantage of the energy and cost savings opportunities now available to them.

Seizing The Utility Rebate Opportunity

My Green Labs Rebate OpportunityThanks to the utility companies who sponsored the My Green Lab study and the excellent leadership of Executive Director, Allison Paradise, I’m pleased to report that an effort is underway to seize this significant energy savings opportunity. As a non-profit organization and part of The Center for Energy Efficient Laboratories (CEEL), My Green Lab is bringing together the industry’s manufacturers to gather the data needed for offering standardized utility rebate programs to ULT freezer users across the state of California.  Allison’s team is working with the three California utilities (Pacific Gas & Electric Company, Southern California Edison, and San Diego Gas & Electric) and has engaged an ENERGY STAR-certified independent laboratory to perform standardized testing across a range of ULT models, using the ENERGY STAR Final Test Method.

Significant Potential Benefits

As I’ve recently posted, many Stirling freezer buyers have already performed their own energy comparison tests and received custom rebates for purchasing our SU780UE upright model. With the cooperation of ULT freezer manufacturers, independently-certified results will create a considerably streamlined process for California labs to apply for rebates when replacing their inefficient ULT freezers.

This program has the potential to spread benefits well beyond the state of California, as other utilities across the country choose to adopt these ULT freezer energy use standards.  The EPA is fully engaged in this effort as well, and the data collected is intended to provide the EPA with the information it needs to complete its ENERGY STAR rating program for ultra-low freezers, giving ULT buyers a standard that is similar to the “MPG” fuel consumption rating used by car buyers.

Looking Forward to Test Results

We’re pleased to report that third-party testing has already been completed for our SU780UE ULT freezer. We look forward to sharing these certified results when all model testing has been completed and published. Having seen our test data, I am confident that these results will independently confirm our continued commitment to delivering sustainability advantages, as compared to compressor-based systems.

Again, we applaud the efforts of My Green Lab and its utility partners for leading the way toward a more sustainable and energy-efficient future for California research laboratories!

Fred Hutch Research Reports Earning $20K Rebate with Stirling Freezers

In my last blog post, I highlighted how electric utilities and Stirling Ultracold customers are increasingly benefiting from rebates tied to replacing their legacy, compressor-based models with energy-efficient SU780UE ultra-low freezers. In this post, I’m happy to commend one world-renowned research institution who has reported earning rebates for their Stirling freezer replacement program.

In their newsletter “Hutch News”, Fred Hutchinson Cancer Research Center recently posted Ultra-low freezers earn cool $20K rebate from Seattle City Light. The second newsletter article reports how Fred Hutchinson (Fred Hutch) began the process of replacing its fleet of conventional compressor-driven ULT freezers with Stirling models in 2013. As a result, the facilities team was able to contract with their local electric utility, Seattle City Light, to receive rebates of $600 per new freezer. The Fred Hutch team has calculated that replacing their current freezers with Stirling units can save them 481,664 kilowatt hours per year, which equates to a savings of $27,937 annually in electricity alone.

In this newsletter post, Critical-Systems Supervisor, James Mead states . . .

“We did some operational and energy-use studies over a six-month period and were shocked because the energy consumption was so much lower compared to what we were using. Our studies found all claims by the company to be true, if not conservative. We were sold on it.”

Fred Hutch’s Material Director, Mark Burch, also commented, “To me, this is a great example of what happens when we all work together to support the science and save the environment.”

I’m thrilled to see another example of how our products are having a positive financial and sustainable impact . . . and how our users are just as thrilled to talk about it to their communities and stakeholders.

It’s possible that your research organization could also benefit from a utility rebate program for ULT freezer replacement with Stirling Ultracold models. Contact your Stirling Ultracold representative who can help with setting up the rebate process.

Stirling Users Increasingly Rewarded with Energy Rebates and Incentives

Plug and SparksAs the significant energy savings made possible by Stirling Ultracold freezers are now universally confirmed through independent testing and EPA ENERGY STAR® Final Test Method results, it’s not surprising that several major U.S. electric utility companies are offering rebates to research organizations who adopt our ULT freezers.  Many sustainability-conscious research institutions are also now incentivizing the purchase of our freezers by offering their own internal rebate programs.

Below is the growing list of utilities and research organizations that have implemented ULT energy rebate/incentive programs for buying our freezers so far . . .

  • Duke University
  • Eversource Energy (formerly NStar) rebate for:
    • Harvard University Faculty of Arts & Sciences
  • Pacific Gas and Electric Company rebates for:
    • Bay area commercial biotech and biopharma users
    • University of California San Francisco
  • San Diego Gas and Electric rebate for:
    • University of California San Diego
  • Seattle City Light rebates for:
    • University of Washington
    • Fred Hutchinson Cancer Research Center
  • Stanford University
  • University of California Riverside
  • University of Pennsylvania

It’s quite possible that your research organization could also benefit from a utility or internal energy rebate program for ULT freezer replacement with Stirling Ultracold models.  Contact your utility or Stirling Ultracold representative to help with setting up the rebate process.