Comprehensive Cold Storage Project for Agricultural and Livestock Products Trading Market

Project Name: Xizang Characteristic Agricultural and Livestock Products Trading Market Cold Storage Construction Project.

Completion time: September 2025, China Xizang Lhasa City.

Construction scale: The cold storage facility is a 4-story brick-concrete structure, with each floor measuring 1,350㎡ (totaling 5,400㎡). The interior has a 5-meter ceiling height and utilizes 15cm double-sided 05 steel plate polyurethane sandwich insulation panels. The total storage capacity reaches 27,000m³.

Cold storage temperature: -18℃ to-25℃.

Cold storage type: Large-scale aquatic and meat wholesale market low-temperature storage cold storage.

The construction period is 50 days, and the debugging and cooling period is 10 days.

Refrigeration unit: A set of Taiwan Fusheng semi-hermetic screw parallel compressor units, comprising three SRL330B-DP units connected in parallel, with a total cooling capacity of 332 kW.

Fluid supply system: employs a 4m³ drum pump for fluid delivery.

Outdoor condenser: Evaporative condenser.

The evaporator in the tank is a suspended aluminum tube.

Defrosting method: Thermal defrosting with fluorine.

Design service life: 20 years.

The Xizang Special Agricultural and Livestock Products Trading Market Cold Storage Construction Project is a large-scale aquatic and meat wholesale market's core low-temperature storage facility, designed based on the high-altitude regional characteristics and industrial development needs of Xizang Lhasa. With the core objectives of ensuring the quality of special agricultural and livestock products and facilitating cold chain logistics channels, the project constructs a modern cold storage system adapted to the high-altitude environment of western regions through customized cold storage design, advanced refrigeration technology applications, and stringent construction standards for high-altitude areas. This initiative injects strong momentum into the development of the cold chain industry in Xizang and even the entire high-altitude western region.

This project features a dedicated low-temperature storage facility for large-scale aquatic and meat wholesale markets, with a capacity exceeding 5,400 square meters and a storage capacity of 7,000 tons. As a core hub in the cold chain logistics system, it is designed to provide long-term, stable deep-freezing storage for temperature-sensitive products such as aquatic and meat products. The facility maintains a constant temperature below-18°C, effectively inhibiting microbial growth and enzyme activity, thereby delaying product oxidation and spoilage. This ensures that meat products can be stored for up to 6-12 months, while aquatic products retain their freshness and nutritional value, guaranteeing food safety from the source.

Core Technology: Bucket Pump Liquid Supply Refrigeration System, Highlighting Extreme Energy-Saving Advantages

First, it enhances heat transfer efficiency and reduces energy consumption. The drum pump liquid supply enables full liquid operation of the evaporator, with the refrigerant circulation volume exceeding three times the evaporation rate. This significantly increases the refrigerant flow velocity within the tubes, ensuring full contact with the evaporator's inner surfaces and substantially improving the heat transfer coefficient. Simultaneously, it effectively reduces the heat transfer temperature difference in the evaporator, thereby expanding the effective heat exchange area. Compared to traditional systems, this design demonstrates a marked improvement in refrigeration efficiency. Data indicates that this system can significantly boost the refrigeration system's coefficient of performance (COP), with the compressor's operational efficiency increasing by over 5%.

Secondly, the long-term operational energy efficiency demonstrates remarkable benefits. Calculations show that large-scale cold storage facilities using drum pump liquid supply systems can achieve 15%-20% annual electricity savings. Based on the project's scale, this translates to over 130,000 kWh of energy conservation annually. At Lhasa's local electricity rates, the additional equipment investment can be fully recovered within 18 months, making the long-term energy and economic benefits highly significant. Additionally, the oil in the refrigerant can be effectively separated in the fluorine drums and recycled to the compressor, preventing lubricant buildup on evaporator surfaces that would impair heat exchange efficiency. This design not only extends equipment lifespan but also reduces maintenance costs.

The implementation of the Xizang characteristic agricultural and livestock product trading market cold storage construction project not only fills the gap of large-scale specialized aquatic and meat low-temperature storage cold storage in Lhasa, but also plays a milestone role in promoting the development of the cold chain industry in the high-altitude areas of western China.