Investigation on the Stability of Temperature Field of Multi-Brand Blood Cold Storage
CHEN Xingzhia, WANG Deyuanb, CAO Xueleia, CHEN Yunguangc, XU Jiewangb
a. Department of Blood Supply; b. Department of Logistics Support; c. Department of Quality Management,
Guangxi Blood Center, Liuzhou Guangxi 545005, China
Abstract：Objective To explore the temperature fluctuation value, temperature uniformity, temperature deviation, temperature nonuniformity
coefficient and temperature variation of several brands blood cold storage with different air supply technology, and to
evaluate the stability of the temperature field in the reservoir. Methods The blood refrigeration warehouses of 8 domestic blood
collection and supply institutions were selected and provided by 3 companies (referred to as TJBY, SQGS and AKGS, respectively).
In addition, 6, 1 and 1 blood collection and supply institutions adopted TJBY brand cold storage (labeled as TJBY1, TJBY2,
TJBY3, TJBY4, TJBY5, TJBY6), SQGS brand cold storage (labeled as SQGS) and AKGS brand cold storage (labeled as AKGS),
respectively. A total of 9 temperature collection points were set in the geometric center of the upper, middle and lower layers of
each storage unit on the left, middle and right sides of the cold storage to collect the temperature of 6 operating cycles, and analyzed
the temperature fluctuation value, temperature uniformity, temperature deviation, temperature non-uniformity coefficient, average
temperature and other indicators in the storage. Results The temperature non-uniformity coefficients of TJBY2, TJBY6, SQGS and
AKGS were lower, and there was no statistically significant difference in pairwise comparison (P>0.05). Meanwhile, the temperature
field stability of TJBY2 and TJBY6 cold storage was better than that of TJBY1, TJBY3, TJBY4 and TJBY5. Except for TJBY1,
TJBY4, and AKGS, where the average temperature deviation was relatively large, the other five branded refrigerated warehouses
could all be maintained near the median of the set temperature range (4℃), the highest temperature of TJBY1, TJBY4 and TJBY5
exceeded the upper limit (6℃), and the lowest temperature of TJBY3 and AKGS exceeded the lower limit (2℃). The temperature
fluctuation values of TJBY2, TJBY6, SQGS and AKGS were all around 0.5℃, and there was no statistically significant difference
in pairwise comparison (P>0.05), meanwhile, they were significantly lower than TJBY1, TJBY3, TJBY4 and TJBY5 (P<0.05). The
temperature uniformity of TJBY1, TJBY3, TJBY4, TJBY5 >1.0℃, and there was no statistically significant difference in pairwise comparison (P>0.05), meanwhile they were significantly higher than that of TJBY2, TJBY6, SQGS, AKGS (P<0.05). The average
temperature deviation of TJBY4, TJBY5 and AKGS was >1.0℃, while the temperature deviation of TJBY6 was
<0.5℃. Conclusion The temperature field stability of 5 brand identity refrigerates (TJBY1, TJBY3, TJBY4, TJBY5, AKGS)
using intermittent direct air supply or continuous direct air supply are poor, while the temperature field stability of 2 brand identity
refrigerates (SQGS and TJBY2) using intermittent direct air supply or high-frequency start intermittent direct air supply are good.
TJBY6 with microporous air supply has better stability of temperature field. The stability of the cold storage temperature field is
related to the air supply technology, and the microporous air supply effectively isolates the cold and hot air in the blood cold storage
to avoid the formation of vortex currents of overcooled and superheated air, so that the stability of the cold storage temperature field
is maintained better, and the results of this study can be a favorable reference for the formulation of domestic standards or industry
standards for blood cold storage.
陈兴智a，王德源b，曹雪蕾a，陈云光c，徐杰旺b. 多品牌血液冷藏库温度场稳定性的调查研究[J]. 中国医疗设备, 2023, 38(7): 55-60.
CHEN Xingzhia, WANG Deyuanb, CAO Xueleia, CHEN Yunguangc, XU Jiewangb. Investigation on the Stability of Temperature Field of Multi-Brand Blood Cold Storage. China Medical Devices, 2023, 38(7): 55-60.
