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Synergy

5/9/2019

5 Comments

 
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The Synergistic Relationship of Energy and Storage Capacity/Space Savings

This week's blog post comes to us from one of our first Freezer Challenge supporters - Stirling Ultracold.  Stirling Ultracold has been leading the industry in promoting energy-efficiency for years.  In this post, Scott Masiella, Director of Product Management, explains how energy-efficiency combined with high-density storage can result in significant savings for labs.

As a sustainability advocate and sponsor of the 2019 International Laboratory Freezer Challenge, Stirling Ultracold actively supports the Challenge’s core principles and sample management best practices. Our mutual goals are to reduce energy consumption, costs and environmental impacts in laboratories and facilities, and to optimize valuable floor space through effective utilization of ultra-low temperature (ULT) freezer storage capacity.

Energy and Carbon Footprint Savings by Replacing Legacy Freezers
When considering how to reduce lab energy usage and costs, one way is to replace older ULT freezers with new energy-efficient and ENERGY STAR®-certified units. If you consider the high average kWh/day energy consumption of legacy ULT freezers at current electricity rates, you’ll find significant cost savings opportunities that many facilities may be overlooking. As Freezer Challenge participants are well aware, both operating carbon footprint and energy use can be greatly reduced by replacing older, inefficient ULT freezers.

Space Savings by Increasing Storage Density per Freezer Footprint
However, as many research organizations expand their sample inventories, and may even be contemplating facility construction to accommodate their growing ULT storage needs, a greater premium is being placed on storage capacity per square foot/meter of floor space. As pointed out in last year's blog post, Increasing ULT Freezer Storage Capacity with Limited Space and Budgets, this involves a comparison of interior volume and exterior size specifications of various ULT freezer models. Purchasing a ULT freezer that has larger storage volume in the cabinet, yet has smaller exterior footprint dimensions, will save valuable floor space. If you factor in the value of the lab or biobank floor space cost per square foot/meter, along with the freezer storage capacity that needs to be replaced, a ULT freezer with the most storage volume per exterior footprint will create substantial floor space savings per year.
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An organization should also look at the sample storage capacity of current ULT freezers before beginning the costly process of expanding facilities or purchasing new replacement units. Lab managers and researchers should consider high-density storage and cell dividers. These solutions will allow researchers to maximize their available sample storage space. If you take full advantage of your freezers’ available storage capacity and utilize high-density storage systems (600 or 700 boxes with 100 cell dividers), you may be able to reach your needed storage capacity with fewer freezer units overall!

Cost Synergies by Replacing ULT Capacity with High-Efficiency, High-Density Freezers
ULT freezers with designed-in high-density storage further enable floor space and capital cost savings by allowing you to purchase fewer replacement freezers for the same sample storage capacity. Not only might expanded facilities not be necessary, but freezers that combine energy savings with high-density storage savings create an even greater benefit by reducing energy, maintenance and infrastructure costs over a lifetime of operating fewer freezer units.

These elements have a synergistic relationship that will give you a better return on your investment. It will take fewer years to get the initial investment back on new energy-efficient ULT freezers if high-density storage is also implemented to reduce floor space and number of units purchased, based on storage capacity requirements. These best practices are at the foundation of the Freezer Challenge objectives.

When making these energy and space savings decisions, don’t hesitate to contact your freezer provider for assistance. There are tools available to help calculate energy, space and operating cost savings from replacement of legacy models.

5 Comments
Tommy T McNeill
5/10/2019 07:57:10 am

This is an awesome idea and a very creative way to gain insights into the ultra low temperature freezer market.

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9/17/2019 10:22:49 pm

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The Freezer Challenge is a program coordinated by the non-profit organizations
​My Green Lab
® and the International Institute for Sustainable Laboratories, and sponsored by various companies with an interest in promoting the most energy efficient cold storage options.
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