About this presentation

related to ATMOsphere Asia 2014
published on 4 February 2014
16 pages
2 MB

Klass Visser of KAV Consulting, based in Australia, was asked to provide a solution to double the cooling capacity of a refrigerated fruit warehouse, used to store and cold sterilise products at 1°C to prevent fruit flies. The required refrigeration capacity increase was 110-190 kW depending on the fruit’s temperature. The maximum power supply capacity increase allowed was 9.5%. The solution Visser developed was to replace the original R22 system with an ammonia-glycol refrigeration system, doubling the cooling capacity whilst not increasing the energy consumption.  

About the speaker(s)

Klaas Visser

 

Klaas Visser has an extensive international experience in the design, building and trouble shooting of medium to large ammonia systems with involvement in more than 800 NH3 projects during the past 45 years.

The world’s first Multi Function 2 Stage Transcritical CO2 Refrigerating System with Parallel Compression (MF2STCCO2RSPC) has now been operating seven years, performing six cooling and nine heating functions at a small food processing plant.
Commissioning of the second MR2STCC02RSPC system near Sydney has been delayed. It is the first CO2 system in the world employing an evaporative condenser/gas cooler (ECGC). 
A case study comparing ECGCs and Adiabatically Assisted Air Cooled CO2 Gas Coolers in terms of their Energy and Water Consumption and the COP Improvement of the refrigeration systems at ambient Wet Bulb Temperatures up to 28 degrees C – not exceeded in 98% of the World’s climates - achieving 31 degrees C Gas Cooler Exit Temperature.   
The design of a MF2STCC02RSPC with an ECGC for a −30°C 40,000 cubic metre cold store near Kuala Lumpur is complete and waiting for building approval.