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Cold Room Evaporator: Product Loading Height and Airflow Blocking Risk

  • Release time: 2026-10-13

Cold Room Evaporator: Product Loading Height and Airflow Blocking Risk

Pallet stacking height directly changes air circulation space inside cold storage. Over-height goods reduce airflow passage and create localized hot zones. Even if the rated cooling capacity of air cooler is sufficient, blocked airflow prevents cold air from reaching inner layers of stacked goods. Xindacool air cooler layout design reserves enough vertical clearance according to pallet stacking height submitted in project design document. Different pallet types change actual occupied height. Thick base pallets reduce available air gap even with same product stacking layers. When stacking goods, top cartons should not touch ceiling or air return path. Blocking return air will break the whole air circulation loop. Goods stacked too densely between racks narrow aisle air channel. Cold air cannot penetrate pallet stacks and product temperature stays uneven. Fragile packaged goods cannot be compressed. Loose stacking creates large air gaps while over-compacted stacking blocks cross airflow. For multi-layer rack cold storage, upper pallet layers are closer to air cooler outlets. Air deflection plates guide cold air downward to lower layers. After warehouse layout adjustment, air distribution should be rechecked. Changing pallet height or rack arrangement may block original airflow path. Forklift operators need unified stacking specification. Random irregular stacking is one common cause of uneven temperature inside rack cold room. Temperature sensors placed behind high pallet stacks help discover hidden hot zones that cannot be observed from warehouse passageway.

FAQ

Q: What problem comes with over-height pallet stacking? A: It reduces air circulation space, blocks cold air flow and creates hot zones inside goods stacks. Q: Does thick pallet base affect airflow? A: Yes, thicker pallets reduce reserved vertical clearance even for same product stacking height. Q: What happens when goods block air return passage? A: The whole air circulation loop is damaged and air cooler cannot work under designed airflow state. Q: How to send cold air to lower pallet layers on high racks? A: Install adjustable air deflectors to redirect airflow downward toward lower storage positions. Q: Why recheck airflow after modifying warehouse rack layout? A: Changed stacking height or rack positions may block original designed air circulation route. Q: What stacking style blocks cross airflow? A: Over-compacted goods with no gaps between cartons hinder cold air penetration into pallet interior. Q: Where to place sensors to find hidden hot zones? A: Mount temperature sensors behind high pallet stacks away from main warehouse aisles. Q: What cause of irregular temperature in rack cold storage? A: Unregulated random pallet stacking is a very common field factor affecting air distribution.

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