Achieving Temperature Control
Several factors can contribute to climate fluctuations in a warehouse. These include prevailing outside conditions, warehouse structural integrity, the constant influx and outflux of people and products, and storage space arrangement.
All are reasons why there are temperature variations in warehouses. The first step in temperature control in a climate controlled warehouse is to determine the lower and upper temperature limits. Decisions must be made to determine how low temperatures may be allowed to fall and the point beyond which they should not rise and exceed; and for how long.
One can only decide based on the kind of products that will be in the warehouse. Each product may vary in storage temperature requirements. However, most products store well in temperatures between 2°c and 8°c. In the case of products with specific requirements, you must consult the manufacturer's specifications for storage temperature limits.
After establishing upper and lower temperature limits, it is time to perform the entire warehouse temperature mapping. It is common to find different temperatures at different spots in the same warehouse.
Mapping is the process of finding these temperature pockets using a verified testing procedure. Temperature mapping helps determine the temperature distribution in the entire structure and thereby identify cold and hot spots.
From the mapping exercise, you can establish which areas of the warehouse need corrective measures. These corrective actions may include structural modifications or changing airflow patterns to achieve a uniform temperature distribution.
Cold and hot spots provide the best places for the installation of temperature sensors. That is because any fluctuation will be most pronounced in these places and thereby easier to detect. Continuous temperature monitoring in a climate controlled warehouse is possible with modern advanced data loggers. You can program the data loggers to read the temperature at regular intervals. These readings in a graph provide an accurate depiction of the temperature curve during the measurement period.