Results 51 to 54 of 54
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23-02-2010, 04:58 AM #51
Re: Capillary tube size, refrigerant, oil
All this grunting & groaning...
Ok, so basically with enough compressor over-size, the job can get done, no matter the efficiency. True, but getting harder to justify in these days of price & energy pressures.
What is ideal sizeing for cap, firstly one that always protects comp, low mid or high, I would look at the combination that gives the best results over a process, even though performance may be poor a some point of the process.
Acc does allow for a an over charge
aabbcc, only done alittle work in fractional comp hp range, where TEV valves are not available, so here caps are good.
in commercial range never came across a system that we could protect, i presume you are taking systems with very low loads, where valves minimum are higher than the low load, you are using the cap as a flooded system. critical charge.
Engineering Specialist - Cuprobraze, Nocolok, CD Technology
Rarefied Technologies ( SE Asia )
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23-02-2010, 05:03 AM #52
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23-02-2010, 05:08 AM #53
Re: Capillary tube size, refrigerant, oil
Engineering Specialist - Cuprobraze, Nocolok, CD Technology
Rarefied Technologies ( SE Asia )
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23-02-2010, 05:11 AM #54
Re: Capillary tube size, refrigerant, oil
I'm interested in this comment & why you need more fluid. Is this because of increased cap tube length?
Because of the Length and the Working Temp is below (assume) 10C... The fluid has shrink.
The lab system has an inline filter-drier, as well as a small suction strainer, before the cap tube.
So, you feel that the noise was because the system was short of refrigerant? Can you perhaps explain this further?
As mentioned I assume the Heat pump is working below 10C. The ref is shrinking. Perhaps Cap has been adjusted to work above 10C...
With a small receiver there is the possibility to have the adequate amount in cold days. Over thermodynamics you/we have to calculate again and again with different ambient conditions and different amount of charges...Engineering Specialist - Cuprobraze, Nocolok, CD Technology
Rarefied Technologies ( SE Asia )
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