Industry News_WELLFANDS

2025-10

What are the differences in maintenance requirements among different types of marine heat pump units?

Due to differences in operating principles, environmental conditions, and structural designs, maintenance priorities for various types of marine heat pump units differ significantly. In practice, maintenance plans should be tailored to the specific type of vessel (ocean-going / inland waterway / passenger ship / cargo ship) and the sailing region (tropical / cold climate / high-salt-mist areas), while strictly adhering to the classification society’s regulations regarding equipment corrosion prevention and safety protection.

2025-10-14

What are the differences in maintenance requirements among different types of marine heat pump units?

2025-10

Daily Maintenance of Marine Heat Pump Units

Daily maintenance of marine heat pump units must take into account the vessel’s unique environmental conditions (such as high salt spray, vibration, and space constraints) as well as the equipment’s operational characteristics. Particular attention should be paid to corrosion prevention, system stability, and maintaining energy efficiency. The following are the key maintenance points:

2025-10-14

2025-10

The unique design of marine air conditioners

The design of marine air conditioners differs significantly from that of land-based air conditioners. This distinctiveness stems primarily from the unique environmental conditions and operational requirements of ships, and is specifically reflected in the following aspects:

2025-10-14

The unique design of marine air conditioners

2025-10

What are the types of marine air conditioning systems?

A low-temperature cold storage facility is a refrigerated storage space with a typical temperature control range of -22°C to -25°C, primarily used for storing items—such as food and pharmaceuticals—that require long-term preservation at low temperatures. Its core structure is built using polyurethane insulation panels, complemented by a microcomputer-based control system that ensures precise temperature regulation and real-time monitoring of operational parameters. Based on differences in design temperatures, these facilities can be categorized into types such as quick-freezing chambers (-35°C to -40°C) and ultra-low-temperature cold storage facilities (-45°C to -60°C); notably, the temperature ranges of quick-freezing chambers and low-temperature cold storage facilities overlap. During operation and maintenance, special attention must be paid to equipment upkeep and moisture-proofing of the storage structure. Core components, such as compressors, are often sourced from internationally renowned brands to ensure optimal cooling performance.

2025-10-14

What are the types of marine air conditioning systems?

2025-10

What are the temperature standards for cold storage facilities?

The temperature standards for cold storage facilities vary depending on the type of items stored and the duration for which they need to be preserved. Refrigerated storage typically maintains temperatures between 0°C and -5°C, while frozen storage usually operates at or below -18°C. For cold storage facilities with special purposes, temperatures are set according to specific requirements. Maintaining a stable temperature and avoiding temperature fluctuations are crucial for ensuring the quality of stored items. Therefore, properly setting and managing cold storage temperatures is of great importance for guaranteeing food safety, pharmaceutical quality, and product quality.

2025-10-14

What are the temperature standards for cold storage facilities?

2025-10

Working Principle of Ship Refrigeration Units

The operating principle of a ship's cold storage system is based on a refrigerant circulation system, which achieves cooling through three core processes: heat absorption by the evaporator, compression by the compressor, and heat release by the condenser.

2025-10-14

Working Principle of Ship Refrigeration Units

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