air conditioner vs refrigerator compressor
air conditioner vs refrigerator compressor
(OP)
Dear all,
I am building ice maker. I have passed many of the challenges I faced, but now is another challenge i am facing. And i will ask you if the solution that i am thinking might work
the problem is:- i cant get compressor(hermetic piston type) with enough HP like 3-5Hp for ice making but those type of compressor used for air conditioning that look like cylinder are available for example 14000btu/hr when i convert this to hp it is about 5Hp. 1/2 hp compressor for refrigeration is available for my ice maker so to raise my ice production rate i am planning to build cooler/chiller with the air conditioner 5hp compressor and chill the water and feed it to the ice maker
does this solution sound good?
I am building ice maker. I have passed many of the challenges I faced, but now is another challenge i am facing. And i will ask you if the solution that i am thinking might work
the problem is:- i cant get compressor(hermetic piston type) with enough HP like 3-5Hp for ice making but those type of compressor used for air conditioning that look like cylinder are available for example 14000btu/hr when i convert this to hp it is about 5Hp. 1/2 hp compressor for refrigeration is available for my ice maker so to raise my ice production rate i am planning to build cooler/chiller with the air conditioner 5hp compressor and chill the water and feed it to the ice maker
does this solution sound good?





RE: air conditioner vs refrigerator compressor
They are not directly interchangeable to compare compressors.
RE: air conditioner vs refrigerator compressor
RE: air conditioner vs refrigerator compressor
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
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RE: air conditioner vs refrigerator compressor
RE: air conditioner vs refrigerator compressor
RE: air conditioner vs refrigerator compressor
You are looking for the difference between high back pressure and low back pressure compressors.
Low temp compressors definitely cannot be used with medium or high temperature evaporators because they will overload. They have a larger displacement to compensate for the lower suction pressure. That is why many low temp systems include a crankcase pressure regulator for warm box pulldowns or when recovering from defrosts. On the other hand, a compressor designed for high back pressure will be under loaded when used on low temp systems. This can result in motor overheating on a hermetic or refrigerant cooled semi-hermetic compressor. The superheat must be kept to a minimum in the suction gas. I have had very good luck with a few Copelaweld CR model compressors used on freezers. Although, they are not recommended for such applications, my experience has been very good. Another consideration is that the compressor will not have the capacity when under loaded. For instance, a three HP air-conditioning compressor will not pump the same volume as a three HP freezer compressor.
B.E.
You are judged not by what you know, but by what you can do.
RE: air conditioner vs refrigerator compressor
The topic of refrigeration huge. In a nutsheell COP and compressor power depend on:
- refrigerant
- temperatures on condenser and evaporator
- compressor type
- heat exchanger UA (i.e. coil sizes)
- lubrication system and oil return
- for each of the above multiple variatiosn and options of all the misc. equipment required.
You typically specify a refrigeration equipment and it comes with the proper motor and compressor. The only reason to worry is because you need to size electrical system and for energy consumption. Other than that we only care about refrigeration performance (i.e. tonnage)
RE: air conditioner vs refrigerator compressor
Setting up a reliable refrigeration system is filled with pitfalls. Professionals screw it up frequently. Whatever you cobble together is going to have lots of issues. Some will will be small, lots will be energy wasters, and some may be immediate show-stoppers. Most will just be slow nefarious show stoppers guaranteed to hit you at the worst time, which is always when the highest loads are demanded or the most food is at risk.
Do not bother attempting to use A/C equipment to do refrigeration jobs you will be wasting a bunch of time and all your money.
You want ice for what?
What size ice?
How much do you need made in 24 hours?
What electrical power do you have available?
Keith Cress
kcress - http://www.flaminsystems.com
RE: air conditioner vs refrigerator compressor
look i dont want the A/C compressor to make ice directly. what i want is let the A/C compressor chill a water say 5 degree celesius and another freezer compressor will make this water to ice
i want the ice for drinking
ice size 4-5cm and diam of 1cm
80-120 kg/24hr
my compressor
freezer compressor 0.5hp
A/C compressor about 14000btu/hr
electric supply is up to 3kw is available
RE: air conditioner vs refrigerator compressor
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm
RE: air conditioner vs refrigerator compressor
RE: air conditioner vs refrigerator compressor
RE: air conditioner vs refrigerator compressor
RE: air conditioner vs refrigerator compressor
RE: air conditioner vs refrigerator compressor