How Does the CNG PRMS Heater Work? Does the Heating System Use Antifreeze? What's the Ratio, and What's the Heater Brand?

In the field of natural gas distribution, particularly in the pressure regulation and metering of Compressed Natural Gas (CNG), temperature is a critical factor for ensuring system stability and efficiency. When high-pressure gas undergoes throttling and pressure reduction, the Joule-Thomson effect can cause a sharp drop in temperature, potentially leading to ice blockages that compromise supply safety. So, how does the heater, a core component of a CNG Pressure Regulation and Metering Skid (CNG PRMS), function? And how is its heating system protected against freezing?

The Electric Auxiliary Heater: An Efficient and Precise Temperature Guardian

The integrated electric auxiliary heater in a CNG PRMS system operates on a direct and efficient principle. It utilizes built-in electric heating elements to directly heat the heat exchange medium inside the heater's cylinder. The rapidly heated medium then undergoes full heat exchange with the passing natural gas pipelines, transferring thermal energy directly to the CNG stream. This design enables close-proximity, high-efficiency energy transfer between the heat source and the target, offering significant advantages such as rapid heating speed, quick thermal response, and precise temperature control. It effectively prevents gas temperature from falling below the freezing point during pressure reduction, ensuring key components like the Pressure Regulator operate under optimal conditions.

The Antifreeze System: Ensuring Stability in Harsh Environments

To cope with more severe ambient temperatures, especially to prevent internal fluid from freezing when the equipment is idle during winter or in cold regions, the heating systems in many CNG Pressure Reducing Skids employ an antifreeze solution as the heat exchange medium. Yes, the system uses antifreeze based on actual working condition requirements. Typically, the filling ratio for the antifreeze is approximately 90% of the tank volume in the heating system. This ratio ensures sufficient circulating medium for effective heat transfer while leaving necessary expansion space, guaranteeing operational safety.

Reliable Quality, A Professional Choice

For core components, we prioritize reliability. The heaters are selected from premium domestic brands that have undergone rigorous testing and proven their worth in long-term market applications. This commitment reflects the attention to detail and focus on end-user operational safety by leading China PRMS manufacturers.

Broad Application Scenarios

This CNG Pressure Regulating and Metering Skid (CNG Pressure Regulating-Skid), integrated with an efficient heating system, finds applications far beyond traditional CNG Pressure Reducing Stations. It is also a crucial piece of equipment in small-scale LNG Regasification Stations, responsible for the precise pressure regulation and metering of high-pressure natural gas after vaporization, serving as a reliable bridge between LNG Regasification and downstream distribution. Whether deployed as a standalone Pressure Reducing Skid for CNG or as a modular Pressure Reducing Skid Mounted unit within larger station facilities, it provides a stable and continuous pressure reduction and metering solution.

In summary, a CNG Regulator Skid equipped with a high-quality electric auxiliary heater and a properly configured antifreeze system forms the solid foundation for building safe, flexible, and weather-resistant Pressure Reduction Stations. It provides essential technical assurance for industrial gas distribution networks and various gas supply projects.