Customization and troubleshooting services for industrial grade refrigeration systems in cold storage installation and maintenance engineering

Description :

  Cold storage is a storage facility that uses artificial refrigeration technology to maintain a specific low temperature environment indoors. It is mainly used for the preservation, freezing, or constant temperature storage of food, drugs, chemical raw materials, and other items. Its core function is to inhibit microbial activity, slow down chemical reaction rates, thereby extending the shelf life of goods and maintaining quality stability. Typical operating conditions cover various temperature zone requirements from high-temperature preservation warehouses (0 ℃ to 10 ℃) to ultra-low temperature quick freezing warehouses (below -35 ℃), widely used in food processing factories, logistics transfer centers, pharmaceutical warehouses, and large catering supply chain links to solve the problem of loss of perishable goods during long-term storage.

  The specifications of a cold storage system are complex, mainly consisting of four modules: insulation storage body, refrigeration unit, electrical control system, and pipeline accessories. The insulation warehouse body is usually made of polyurethane (PU) or polystyrene (PS) sandwich panels, with a thickness of 100mm, 120mm or 150mm, and a density of 40kg/m ³ or more to ensure thermal insulation performance. The surface material is mostly color steel, stainless steel or embossed aluminum plate. The refrigeration unit can choose piston, vortex or screw compressors according to its scale, and the condensation method is divided into air cooling and water cooling. Heat exchange equipment such as evaporators need to match the cooling load. The implementation standards refer to GB 50072 "Code for Design of Cold Storage" and GB 50231 "General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering". The electrical system must meet the requirements of IP protection level to ensure stable operation in humid and low-temperature environments. All pressure vessels and pipelines must pass pressure resistance testing and air tightness testing.

  In the selection and implementation stages of the project, it is necessary to clearly distinguish the different applicable scenarios of fresh-keeping warehouses, refrigerated warehouses, frozen warehouses, and quick freezing warehouses. The fresh-keeping warehouse is suitable for fruits, vegetables, and flowers, with a temperature controlled above 0 ℃; Cold storage is used for short-term storage of meat and aquatic products, with temperatures typically around -18 ℃; The quick freezing warehouse requires rapid passage through the maximum ice crystal formation zone, with temperatures as low as -35 ℃ or below. When selecting, special consideration should be given to cargo throughput, frequency of inbound and outbound storage, ambient environmental temperature, and power supply conditions. If it is an old warehouse renovation or maintenance, it is necessary to first evaluate the aging degree of the original insulation layer and the energy efficiency ratio of the compressor, and determine whether it is a partial repair or a complete renovation. For similar categories such as simple refrigerated trucks or household refrigerators, cold storage places more emphasis on the stability of building structure, large capacity storage capacity, and industrial grade continuous operation, and cannot mix design standards.

  The installation and maintenance of cold storage are directly related to operational energy consumption and service life. The installation points include sealing treatment at the joint of the storage board, effective blocking of the cold bridge, and electrical heat tracing insulation of the drainage pipeline to prevent ice blockage. Daily maintenance recommendations include regularly cleaning the condenser dust, checking the refrigerant level and pressure for normal operation, and monitoring the integrity of the door seal to reduce refrigerant leakage. Common faults include high pressure alarm of the compressor, excessive frosting of the evaporator, and malfunction of the temperature control probe. It is necessary to establish a regular inspection system and record changes in operating parameters. The general overhaul cycle is 3-5 years, involving compressor maintenance or refrigerant replacement. Daily minor repairs focus on tightening and lubricating electrical components to ensure that the system does not experience shutdown accidents during peak load periods and to ensure the safety of stored goods.

AfterSalesService :