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- Challenges and Chances: A Review of the 1st Stem Cell Community Day
- Summertime, and the Livin’ Is Easy…
- Follow-on-Biologics – More than Simple Generics
- Bacteria Versus Body Cells: A 1:1 Tie
- Behind the Crime Scene: How Biological Traces Can Help to Convict Offenders
- Every 3 Seconds Someone in the World Is Affected by Alzheimer's
- HIV – It’s Still Not Under Control…
- How Many Will Be Convicted This Time?
- Malaria – the Battle is Not Lost
- Physicians on Standby: The Annual Flu Season Can Be Serious
- At the Forefront in Fighting Cancer
- Molecular Motors: Think Small and yet Smaller Again…
- Liquid Biopsy: Novel Methods May Ease Cancer Detection and Therapy
- They Are Invisible, Sneaky and Disgusting – But Today It’s Their Special Day!
- How Many Cells Are in Your Body? Probably More Than You Think!
- What You Need to Know about Antibiotic Resistance – Findings, Facts and Good Intentions
- Why Do Old Men Have Big Ears?
- The Condemned Live Longer: A Potential Paradigm Shift in Genetics
- From Research to Commerce
- Chronobiology – How the Cold Seasons Influence Our Biorhythms
- Taskforce Microbots: Targeted Treatment from Inside the Body
- Eyes on Cancer Therapy
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- Services pour pipettes
- Services pour centrifugeuse et rotors
- Services pour Mastercycler
- Services pour automates de pipetage
- Services pour bioprocédés
- Services pour congélateurs
- Services pour incubateurs
- Services pour agitateurs
- Services pour appareils de photométrie
- Service de contrôle de la température et de l’agitation
- Services pour la manipulation cellulaire
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Footprint Versus Efficiency
Lab Academy
ULT freezers are available as upright freezer or chest freezers. Both design have pros and cons.
Energy per cooled liter
Energy-wise, chest freezers are the most economical type of freezers. Since they have sidewall insulation and are opened from the top, chest freezers can maintain their cold temperatures very well. Opening from the top reduces energy consumption per volume, especially when opening and closing the outer door of the unit on a regular basis. Less energy is lost when opening the outer door of a chest freezer compared to an upright freezer as no cold can literally fall out of the freezer.Based on consumption values, this can be as the following:
The 570 L upright freezer needs 13.3 Wh/ day and liter of cooled volume whereas the 660 L chest freezer needs 12.3 Wh/ day and liter of cooled volume. Both units have similar wall insulation based on PU-foam and vacuum insulation panels as well as green cooling liquids.
Door gaskets
A far lower but more long-term loss of cold air is the door gasket – which is always the weakest point of a ULT freezer’s insulation. As chest freezers have no vertical opening, no cold can leave the freezer via the gaskets as in an upright freezer.Lire plus
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Footprint
However, a chest model has a much bigger footprint than an upright freezer. The mentioned 570 L upright freezer has a net footprint of 0.87 m2 whereas the 660 L chest freezer needs 1.75 m2 as free space. Space-wise, you can store two upright freezers instead of one chest freezer. Additionally, the space above a chest freezer can not be used for storage shelves as the chest freezer door needs an opening height of nearly 90 cm.Lire plus
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When adding the recommended ventilation distance of 15 cm for the left, right, and back side, the upright freezer should be planned with a footprint of 1.33 m2 compared to 2.34 m2 for the chest freezer.
Transportation
Transport into the building and within the building itself is more complicated for a chest freezer compared to upright freezers. Many lifts and narrow corridors do not fit for 2 m x 0.9 m boxes. - And despite all hopes, a 85 cm freezer will never fit through a 84.5 cm door frame, that is a principle…Lire plus
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Eppendorf SE
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