ATMO China case studies signal market interest in NH3

ATMO China case studies signal market interest in NH3

The ATMOsphere Review Board has chosen the first round of technology case studies from international and domestic manufacturers promising to transition to natural refrigerants in the Chinese market.

In response to increased market interest in natural refrigerants, ATMOsphere China, the first Chinese edition of shecco’s global conference series ATMOsphere, will be held in the capital Beijing on 11-12 April 2018.

ATMOsphere China will delve into the state of the Chinese HVAC&R market, which is currently in a transitional stage after the global agreement reached to phase down HFCs under the Montreal Protocol. Conference presentations will showcase the value of leapfrogging from HCFCs to natural refrigerants in response to the global phasedown.

The ATMOsphere Review Panel has chosen the first round of technology case studies to be presented at the conference: from CAREL, DongQi, Emerson, Sanhua and Scantec.

The case studies cover natural refrigerants CO2, ammonia and propane used in a range of applications such as heat pumps, warehouses, supermarket retrofits, and a newly opened METRO Wholesale store, China’s first transcritical system.

The presentation selected with ammonia is:

Scantec | New low-charge ammonia plant servicing a refrigerated warehouse distribution facility in Dongguan by Stefan Jensen

The case study will discuss what is believed to be the first central type, dual compression stage, low charge NH3 refrigeration plant in China fitted with external penthouse evaporators with automatic ambient air defrost. An added safety feature of the penthouse evaporators is automatic venting of the ammonia to ambient in the event of a refrigerant leak. The ambient air defrost also eliminates the common problem of liquid hammer associated with some hot gas defrost methods. This improves the overall safety of the installation. Loss of the entire operating charge from one evaporator (3 concentrations in the cold store of < 300 ppm (IDLH value) in the event automatic venting malfunctions). Superior energy performance is achieved through the use of variable frequency drives on all compressors and evaporator fans.

Click here to see the ATMOsphere China event page.