T/SHSCHYXH 000003-2023 Active Group standards

T/SHSCHYXH 000003-2023 The general technical requirements for spiral quick freezing device with multi-cooling sources collaboration

Publish Date: 2023-01-16 Implement Date: 2023-03-16 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/SHSCHYXH 000003-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Refrigeration equipment

ICS Name: Refrigeration technology

Publish Date: 2023-01-16

Implement Date: 2023-03-16

Scope

Scope: This document specifies the performance requirements, operational technical requirements, and daily maintenance requirements for multi-cold source collaborative spiral freezing devices for aquatic products. This document is applicable to the design and application of multi-cold source collaborative spiral freezing devices for aquatic products; Main technical content: 4. Performance requirements 4.1 Air cold source 4.1.1 The compressor refrigeration capacity should be reasonably configured, and the nominal refrigeration capacity of the compressor should be 10% to 20% of the refrigeration capacity required by the freezing device. It is recommended to use variable-frequency compressors, and the refrigeration capacity of the spiral freezing device should be within the range where the energy efficiency of the variable-frequency compressor is relatively high. The double-stage system of the compressor unit should be operated in refrigeration equipment with an evaporation temperature below -30℃. 4.1.2 The evaporator should be composed of stainless steel tubes and aluminum fins, and the frost layer should not block the inter-tube and inter-fin spacing during operation. The height of the evaporator and the freezing machine should be approximately the same. 4.1.3 When the evaporator is multi-path liquid distribution, the liquid distributor and liquid capillary tube should be reasonably matched to ensure that the supply quantity of each branch is relatively consistent. 4.1.4 The fan used with the evaporator should be variable-frequency, which can adjust the fan speed according to the change of refrigeration load and operate under the conditions of -40℃~-50℃ temperature and relative humidity greater than 70%. 4.1.5 Rationally arrange the cold air flow field to maximally utilize the cold air and reduce airflow resistance. 4.2 Liquid/solid cold source 4.2.1 The nitrogen or liquid dry ice supply device should be of variable flow/liquid-solid ratio type, which can adjust the