Federal Register - August 10, 2021
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Source: Federal Register
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Federal Register / Vol. 86, No. 151 / Tuesday, August 10, 2021 / Notices Signed in Washington, DC, on August 5, 2021.
Treena V. Garrett, Federal Register Liaison Officer, U.S.
Department of Energy.
the legal effect of this document upon publication in the Federal Register.
The design characteristics constituting the grounds for the Interim Waiver Application:
Appendix C to Subpart R of Part 431Uniform Test Method for the
OF
Request for Interim Waiver from a DOE test procedure pursuant to
CO2 Direct Expansion Unit Coolers in Medium and Low Temperature
Measurement of Net Capacity and AWEF of Walk-in Cooler and Walk-in Freezer Refrigeration Systems specifies that unit coolers tested alone use the test procedures described in AHRI
12502009. Table 15 and Table 16 of AHRI 12502009 are as follows:
Unit cooler air entering Liquid relative Saturated inlet Liquid inlet humidity, suction saturation subcooling Compressor %
temp, F temp, F
temp, F
capacity
Off Cycle Fan Power
35
<50
-
-
Refrigeration Capacity Suction A
35
<50
25
105
9 Compressor Determine Net On Refrigeration Capacity of Unit Cooler.
Refrigeration Capacity Suction B
35
<50
20
105
9 Compressor Determine Net On Refrigeration Capacity of Unit Cooler.
Compressor Measure fan Off input power during compressor of1
cycle.
EN10AU21.016
-
Test objective
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Test description
Unit cooler air entering dry-bulb,
Application for Interim Waiver
provisions described in 10 CFR 431.401
for the following product on the grounds that the basic model contains one or more design characteristics that prevent testing of the basic model according to the prescribed test procedures.
