Alco Controls
Alco Controls
Alco Controls
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Liquid Correction Factor K t<br />
Temperature R 404A Evaporating Temperature<br />
entering valve °C<br />
A2.5.1/1003/E<br />
For the proper sizing of thermo expansion valves in cases of subcooling<br />
of more than 15K please use additionally the correction<br />
factors on page 60 of this brochure.<br />
<strong>Alco</strong> <strong>Controls</strong><br />
°C -40 -45 -50 -55 -60 -65 -70 -75<br />
+40 1,40 1,76 2,21 2,77 3,56 4,30 4,87 5,61<br />
+35 1,24 1,55 1,94 2,42 3,09 3,71 4,17 4,77<br />
+30 1,12 1,39 1,73 2,15 2,74 3,27 3,66 4,17<br />
+25 1,02 1,26 1,57 1,94 2,46 2,93 3,27 3,70<br />
+20 0,94 1,16 1,44 1,77 2,24 1,66 2,96 3,34<br />
+15 0,87 1,07 1,33 1,63 2,06 2,44 2,71 3,05<br />
+10 0,81 1,00 1,23 1,52 1,91 2,26 2,49 2,80<br />
+5 0,76 0,94 1,15 1,42 1,78 2,10 2,32 2,60<br />
0 0,71 0,88 1,08 1,33 1,67 1,97 2,17 2,43<br />
-5 0,68 0,83 1,02 1,25 1,57 1,85 2,04 2,28<br />
-10 0,64 0,79 0,97 1,19 1,49 1,75 1,92 2,14<br />
-15 0,61 0,75 0,92 1,13 1,41 1,66 1,82 2,03<br />
-20 0,58 0,72 0,88 1,07 1,34 1,57 1,73 1,92<br />
-25 0,56 0,69 0,84 1,03 1,28 1,50 1,65 1,83<br />
-30 0,54 0,66 0,80 0,98 1,22 1,43 1,57 1,75<br />
-35 0,51 0,63 0,77 0,94 1,17 1,36 1,49 1,66<br />
-40 0,60 0,74 0,90 1,12 1,31 1,43 1,59<br />
-45 0,71 0,86 1,07 1,25 1,37 1,52<br />
-50 0,83 1,03 1,21 1,32 1,46<br />
Correction Factor K∆p<br />
∆p (bar) 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 6 7<br />
K∆p 4,73 3,34 2,73 2,36 2,11 1,93 1,79 1,67 1,58 1,5 1,37 1,26<br />
∆p (bar) 8 9 10 11 12 13 14 15 16 17 18 19<br />
K∆p 1,18 1,11 1,06 1,01 0,97 0,93 0,89 0,86 0,84 0,8 0,79 0,77<br />
Liquid Correction Factor K t<br />
Temperature R 507 Evaporating Temperature<br />
entering valve °C<br />
°C -45 -50 -55 -60 -65 -70<br />
+30 1,26 1,67 2,10 2,68 3,48 4,58<br />
+20 1,07 1,41 1,77 2,25 2,89 3,78<br />
+10 0,94 1,22 1,52 1,92 2,46 3,23<br />
0 0,83 1,08 1,33 1,68 2,16 2,82<br />
-10 0,75 0,95 1,19 1,49 1,92 2,48<br />
-20 0,67 0,86 1,07 1,34 1,70 2,20<br />
-30 0,61 0,78 0,96 1,21 1,54 2,00<br />
-40 0,55 0,71 0,86 1,08 1,38 1,79<br />
-50 0,79 0,99 1,24 1,62<br />
Correction Factor K∆p<br />
∆p (bar) 0,5 1,0 1,5 2,0 2,5 3,0 3,5 4,0 4,5 5,0 6,0 7,0<br />
K∆p 4,77 3,37 2,75 2,38 2,13 1,95 1,80 1,69 1,59 1,51 1,38 1,27<br />
∆p (bar) 8,0 9,0 10,0 11,0 12,0 13,0 14,0 15,0 16,0 17,0 18,0 19,0<br />
K∆p 1,19 1,12 1,07 1,02 0,97 0,94 0,90 0,87 0,84 0,82 0,79 0,77<br />
For the proper sizing of thermo expansion valves in cases of subcooling<br />
of more than 15K please use additionally the correction<br />
factors on page 60 of this brochure.<br />
79
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