Plastic Recycling Line Chiller

I. Core Working Principle

Based on the fundamental principles of the vapor compression refrigeration cycle-an industry-standard thermodynamic process widely utilized in air conditioning, refrigeration systems, and heat pump technologies-efficient heat transfer is achieved through the coordinated operation of four core, interconnected components. These components work in sequence to facilitate the continuous circulation and transformation of the refrigerant, enabling the cycle to absorb heat from a low-temperature environment and reject it to a higher-temperature surroundings, which is the primary objective of the system. The four core components that form the backbone of this heat transfer mechanism are as follows:

Evaporator: As a core component in refrigeration and cooling systems, the evaporator facilitates a crucial heat exchange process where the refrigerant inside absorbs thermal energy from the surrounding circulating water. This heat absorption triggers the refrigerant to undergo a phase change, evaporating from a liquid state into a low‑temperature, low‑pressure gas. Concurrently, as heat is removed from the water, the temperature of the circulating water drops significantly, resulting in the production of chilled water that can be utilized for various cooling applications.

Compressor: As a core component within refrigeration and air conditioning systems, the compressor functions by drawing in low-temperature, low-pressure gaseous refrigerant and mechanically compressing it into a high-temperature, high-pressure gas, preparing the refrigerant for subsequent heat exchange processes in the cooling cycle.

Condenser (Finned Type): Equipped with a finned design to enhance heat exchange efficiency, this component relies on forced airflow generated by connected fans to effectively draw away and dissipate the heat carried by the refrigerant. As the refrigerant releases its thermal energy into the surrounding air, it undergoes a phase change, transitioning from a high-temperature, high-pressure gas state into a dense, high-pressure liquid form.

Expansion valve: Typically installed between the receiver-drier and evaporator. Its core functions include throttling and depressurizing medium-temperature, high-pressure liquid refrigerant into low-temperature, low-pressure wet vapor, regulating refrigerant flow into the evaporator based on real-time superheat at the evaporator outlet to optimize heat exchange efficiency, and preventing liquid slugging, insufficient evaporator utilization and abnormal overheating to protect compressors and stabilize system operation.

II. Key Features

Easy Installation: Its integrated design only needs power and process water connections, removing the need for cooling towers, pumps, or auxiliary piping.

Water-Saving & Eco-Friendly: No cooling water consumption, ideal for water-scarce or poor-water-quality regions.

Low Maintenance: Primarily involves periodic cleaning of condenser fins and filters, resulting in minimal upkeep costs.

Significant Environmental Impact: Heat dissipation efficiency is highly temperature-dependent; cooling capacity decreases in high-temperature environments.

Application Scope: It is mainly designed for small to medium cooling capacities, making it ideal for compact systems and mobile or temporary applications.

III. Typical Applications

Industrial Equipment Cooling: Plastic injection molding, laser processing, electronics manufacturing, electroplating, printing, and food processing.

Commercial/Small-Scale Air Conditioning: Retail stores, offices, small data centers, laboratories, and other similar spaces.

Mobile/Temporary Scenarios: Outdoor construction sites, exhibitions, emergency cooling scenarios, and other similar applications.