CO2 booster refrigeration system

CO₂ Booster Refrigeration System with LT and MT Cooling

LYD’s CO₂ booster refrigeration system is an advanced, high-efficiency solution designed to provide both low-temperature (LT) and medium-temperature (MT) cooling from a single integrated refrigeration platform. Successfully co-developed by LYD and Peking University, the system combines natural-refrigerant technology with a flexible booster architecture to support reliable operation across a wide range of commercial and industrial refrigeration applications.

Using carbon dioxide (CO₂/R744) as the refrigerant, the system offers a lower-environmental-impact alternative to conventional synthetic refrigerants while delivering precise temperature control, dependable performance, and efficient system integration.

Product Overview

The CO₂ booster system uses separate LT and MT compression stages to meet the requirements of applications operating at different temperature levels. The MT circuit serves medium-temperature loads such as refrigerated display cases, preparation rooms, and chill rooms, while the LT circuit supports low-temperature applications including frozen-food storage, freezers, and blast-freezing equipment.

Both temperature levels are managed through a centralized CO₂ refrigeration system, reducing the need for separate refrigeration plants and helping simplify equipment coordination, maintenance, and facility integration.

Key Features

Integrated LT and MT Cooling

The system provides simultaneous:

- Low-temperature cooling for frozen products, ice production, blast freezers, and low-temperature storage

- Medium-temperature cooling for fresh-food display, chilled storage, processing areas, and preparation rooms

The LT and MT circuits can be configured to suit the required cooling capacity, evaporating temperatures, and operating conditions of each project.

CO₂ Booster Architecture

The booster configuration is designed to efficiently manage multiple refrigeration levels within one system. LT compressors discharge into the MT suction or intermediate-pressure side, allowing the system to recover and manage low-stage refrigeration loads in an integrated manner.

This architecture can help:

- Improve overall system coordination

- Reduce the number of independent refrigeration systems

- Optimize compressor operation according to load demand

- Support stable operation across varying refrigeration conditions

 Natural Refrigerant Technology

CO₂/R744 is a natural refrigerant with a very low global warming potential compared with many conventional HFC refrigerants. Its use supports refrigeration projects seeking to reduce environmental impact and comply with evolving refrigerant regulations.

CO₂ also offers favorable heat-transfer properties, enabling compact system designs and efficient heat exchange when the system is properly engineered and controlled.

LYD and Peking University Co-Development

LYD successfully co-developed this CO₂ booster refrigeration system with Peking University, combining LYD’s refrigeration engineering and system-integration capabilities with academic research and technical expertise.

The collaboration supports the development of a reliable and technically advanced CO₂ refrigeration platform, with emphasis on:

- System performance optimization

- LT and MT operating coordination

- Energy-efficiency improvement

- Control-system development

- Operational stability

- Application adaptability

The result is a practical CO₂ solution designed for real-world commercial and industrial refrigeration requirements.