How to Choose Energy-Efficient Doors for Cold Storage Facilities?

5/10/2025

With the rapid development of cold chain logistics, energy consumption of up to 38% of the operating cost of cold storage has become a pain point in the industry. After field research on many cold storage facilities, we found that energy loss mainly comes from three major "invisible loopholes": ① Long opening and closing times and low efficiency of the common cold storage door, which is the main source of energy loss. ② The gap between the loading and unloading platform and the pit, and the bottom of the platform, which is exposed to the outdoors, leads to energy loss. ③ The poor sealing of truck loading and unloading links produces cold and heat exchanges that can lead to energy leakage, which directly leads to increased costs.

To achieve energy efficiency, environmental protection, and cost optimization, selecting the right energy-saving cold storage door has become imperative. Fortunately, Fastlink has you covered with its HSS-DEY cold storage high-speed sliding doors, featuring a comprehensive 5-dimensional energy-saving solution.

1. High-speed opening and closing system: The opening speed is as high as 2.5m/s, more than 4 times that of the common cold storage door. Test data show that the transformation of a cold storage door can save electricity 67733.14 degrees per year, a reduction of 80%. The energy loss caused by air convection accounts for 82.5% of the annual energy consumption, accounting for the largest proportion, and the effect of reducing this part of the energy consumption is also the most obvious. Therefore, improving the door opening and closing speed and reducing the opening time is the most effective program.

High-Speed Sliding Doors

2. Composite heat preservation structure: The door plate adopts the third generation of waterproof heat preservation core material with a thickness of 100mm. The R-value reaches 17, and a door can comprehensively protect the low-temperature environment of the cold storage.

High-Speed Sliding Doors

3. Dynamic sealing system: Adjustable sealing design, built-in sealing rubber strips, full sealing design in the unloading position ensures high sealing around the door body, which can meet the harsh cold storage application environment and effectively break the cold.

High-Speed Sliding Doors

4. Cooling heating system: The tracks are equipped with insulation panels to prevent heat loss due to cold bridges and to avoid maintenance costs due to frost and water on the floor.

High-Speed Sliding Doors

5. Industrial-grade durability: Engineered for impact resistance, extended service life, and minimal maintenance requirements - delivering exceptional reliability while significantly reducing long-term operating costs.

High-Speed Sliding Doors

Take an ammonia-cooled cold storage retrofit project, a cold storage door retrofit, as an example:

The temperature inside the cold storage is -18°C, the temperature outside the storage is 10°C, and the relative humidity of the air inside and outside the cold storage is 26% and 60%, respectively. The cold storage door is opened and closed 15 times an hour, working 24 hours a day, 365 days a year without rest. Before the renovation, the cold storage door used an ordinary stainless steel sliding door. The door had been hit, the sealing of the hole was very poor, and the hole had appeared in a serious frost phenomenon. The anti-freezing heating system works 24 hours a day, and the freezing system is continuously working. The anti-freezing heating system works constantly for 24 hours. After the transformation of the use of the cold storage high-speed sliding door, let's compare the energy loss before and after the transformation:

Common stainless steel sliding doors (before remodeling) Cold storage high-speed doors (after remodeling)
Cold storage door size (mm) 3000mm×3000mm 3000mm×3000mm
Door panel thermal resistance value 10 17
Switching speed (m/S) 0.53m/s 2.0m/s
Single door opening delayed closing time (S) 20 4
Total time to open the door for a single time (S) 31 7
Percentage of time open (%) 13.02% 2.9%
Annual cooling power consumption (KWh/y) *due to air convection 69116.22 15378.98
Annual refrigeration consumption (KWh/y) *due to conduction 392 231
Annual refrigeration consumption (KWh/y) *due to infiltration 12916.26 0
Annual refrigeration power consumption (KWh/y) *due to electric heating system 1310.40 393.12
Total annual refrigeration consumption (KWh/y) 83734.75 16001.61

Speed, heat preservation, sealing, cold break, and durability are the 5 key factors to be considered when choosing energy-saving cold storage doors. Fastlink has been devoted to research and development and has continuously optimized and upgraded the energy-saving means of cold storage doors in practice, and is committed to providing you with the optimal solution of cold chain loading and unloading systems.

High-Speed Sliding Doors

High-Speed Sliding Doors

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