ultra-low freezers ultra-low freezers: -80 energy consumption 15 – 20 kwh/day -manufacturer data...
TRANSCRIPT
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ultra-low freezers
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ultra-low freezers: -80
energy consumption
15 – 20 kWh/day-manufacturer data
-validated by monitoring
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‘-70 is the new -80’
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‘-70 is the new -80’
chill up freezers from -80 to -70
save 2-4kW per day
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DOE
‘-70 is the new -80’
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clean freezer coils, regularly defrost freezer
save 12-25% energy
other best practices for ultra-low freezers
prolong lifetime of the freezer
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perform scheduled maintenance on freezers
other best practices for ultra-low freezers
prolong lifetime of the freezer
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remove old, unneeded samples
other best practices for ultra-low freezers
fewer samples stored, fewer freezers are needed
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case study: ultra-low freezers
min 7,300 kWh/year PER FREEZER
energy use
Stirling freezers
example measure
switching to Stirling freezers can save55% min energy reduction
additional benefits
reduced HVAC related usage
reduced risk to samples
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transfer samples to other storage paradigms
-20 freezers
ambient temperature storage containers
other best practices for ultra-low freezers
fewer samples stored, fewer freezers are needed
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are there best practices that will bothreduce energy consumption
andprolong the life of the freezer?
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clean freezer coils, regularly defrost freezer, change filter
save 12-25% energy
best practices for ULT freezers
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remove old samples
best practices for ULT freezers
fewer samples stored, fewer freezers are needed
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‘-70 is the new -80’
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why are freezers set to -80?
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ultra-low temperature freezers: how they work
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‘-70 is the new -80’
chill up freezers from -80 to -70
save 2-4kW per day
![Page 19: ultra-low freezers ultra-low freezers: -80 energy consumption 15 – 20 kWh/day -manufacturer data -validated by monitoring](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649c885503460f94940fce/html5/thumbnails/19.jpg)
DOE
‘-70 is the new -80’
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what is the evidence that -70 is ok for samples?
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‘-70 is the new -80’
CU-Boulder
Dartmouth
Harvard
UC Davis
UC Santa Barbara
UPENN
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how is this saving money?
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less energy = less stress on the compressors
= more up-time, longer freezer life
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