Project name: air cooler for Vietnam cold room
My client needs 12 units of 50 kw air cooler that made of all stainless steel for cold room to storage fruit.
At the beginning we were difficult to going on because my client knew little about what he need.
Then I tried to ask him step by step: (It only took 5 days to conclude a transaction. )
Me: May I know what medium will you use for the unit cooler?
Client: What is medium ? Sorry I don't understand.
Me: That's ok. Medium is something to cool the temperature. It maybe water, glycol, CO2, ammonia, refrigerant and etc.
Client: Thanks. The medium for my air cooler should be ammonia.
Me:OK we have solved one problem. Next, what is the room temperature and the ammonia inlet temperature?
Client: room: +5 ℃, ammonia: -5℃. Totoro, I am a little worried becasue I can't sure if those datas are reasonable.
Me: Don't worry about it. I will send you the sketch and data sheet that calculated by professional software to check all specifications.
Me: There is last thing need to confirm: Defrost type? Water defrost, air defrost or electrical defrost?
Client: Electrical defrost.
Me: Please kindly confirm the data sheet, sketch and the quotation list.
Client: Perfect! My engineer has checked that. Everything is ok. Please directly send me the PI.
In summary, to design a ammonia air cooler, those information are needed:
---- Cooling capacity?
---- Evaporating temperature?
---- Room temperature?
---- Material you need? Stainless steel tube aluminum fin galvanized steel frame or not?
---- Defrost type? Water defrost, air defrost or electrical defrost?
---- It is aqua ammonia or ammonia?
---- It’s pump system or direct expansion system?