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Alco Controls

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Correction Tables for Thermo ® -Expansion Valves<br />

Series TI, TX6, T and L<br />

Valve selection for operating conditions<br />

other than nominal conditions:<br />

Alternatively download the Excel based ALCO<br />

Selection Tool from www.eCopeland.com.<br />

Q n<br />

= Q o<br />

x K t<br />

x K∆p<br />

Q n<br />

: Nominal valve capacity K t<br />

: Correction factor for evaporating and liquid temperature<br />

Q o<br />

: Required cooling capacity K∆p: Correction factor for pressure drop at valve<br />

Liquid<br />

Correction Factor K t<br />

Temperature R 410A (TX6 only) Evaporating Temperature<br />

entering Valve °C<br />

°C +20 +15 +10 +5 0 -5 -10 -15 -20 -25 -30 -35 -40 -45<br />

+65 1,75 1,76 1,78 1,80 1,83 1,86 1,89 2,18 2,55 3,05 3,69 4,49 5,46 6,62<br />

+60 1,49 1,50 1,51 1,53 1,54 1,57 1,59 1,83 2,14 2,55 3,08 3,73 4,52 5,45<br />

+55 1,31 1,32 1,33 1,35 1,36 1,38 1,40 1,61 1,87 2,23 2,68 3,25 3,92 4,72<br />

+50 1,19 1,20 1,20 1,21 1,23 1,24 1,26 1,44 1,68 2,00 2,40 2,90 3,49 4,20<br />

+45 1,09 1,09 1,10 1,11 1,12 1,13 1,15 1,32 1,53 1,82 2,18 2,63 3,17 3,80<br />

+40 1,01 1,01 1,02 1,03 1,04 1,05 1,06 1,21 1,41 1,67 2,01 2,41 2,90 3,48<br />

+35 0,94 0,94 0,95 0,96 0,97 0,98 0,99 1,13 1,31 1,55 1,86 2,24 2,69 3,21<br />

+30 0,88 0,89 0,89 0,90 0,91 0,91 0,92 1,06 1,22 1,45 1,74 2,09 2,50 2,99<br />

+25 0,83 0,84 0,84 0,85 0,85 0,86 0,87 0,99 1,15 1,36 1,63 1,96 2,35 2,80<br />

+20 0,79 0,80 0,80 0,81 0,81 0,82 0,94 1,09 1,29 1,54 1,84 2,21 2,64<br />

Correction Factor K∆p<br />

∆p (bar) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16<br />

K∆p 3,74 2,65 2,16 1,87 1,67 1,53 1,41 1,32 1,25 1,18 1,13 1,08 1,04 1 0,97 0,94<br />

∆p (bar) 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32<br />

K∆p 0,91 0,88 0,86 0,84 0,82 0,8 0,78 0,76 0,75 0,73 0,72 0,71 0,69 0,68 0,67 0,66<br />

Liquid<br />

Correction Factor K t<br />

Temperature R 134a Evaporating Temperature<br />

entering Valve °C<br />

°C +30 +25 +20 +15 +10 +5 0 -5 -10 -15 -20 -25 -30<br />

+60 1,22 1,25 1,27 1,30 1,33 1,36 1,40 1,44 1,48 1,75 2,08 2,46 2,94<br />

+55 1,14 1,16 1,18 1,21 1,23 1,26 1,29 1,33 1,36 1,60 1,90 2,25 2,68<br />

+50 1,07 1,08 1,10 1,13 1,15 1,17 1,20 1,23 1,26 1,48 1,76 2,07 2,46<br />

+45 1,00 1,02 1,04 1,06 1,08 1,10 1,12 1,15 1,17 1,38 1,63 1,92 2,28<br />

+40 0,93 0,96 0,98 0,99 1,01 1,03 1,05 1,08 1,10 1,29 1,52 1,79 2,12<br />

+35 0,90 0,91 0,92 0,94 0,96 0,97 0,99 1,01 1,03 1,21 1,43 1,68 1,99<br />

+30 0,85 0,86 0,88 0,89 0,91 0,92 0,94 0,96 0,98 1,14 1,35 1,58 1,87<br />

+25 0,82 0,83 0,85 0,86 0,87 0,89 0,91 0,92 1,08 1,27 1,49 1,76<br />

+20 0,80 0,81 0,82 0,83 0,85 0,89 0,88 1,02 1,21 1,41 1,67<br />

+15 0,77 0,78 0,79 0,81 0,82 0,84 0,97 1,15 1,34 1,58<br />

+10 0,75 0,76 0,77 0,78 0,80 0,93 1,09 1,28 1,51<br />

+5 0,73 0,74 0,75 0,76 0,89 1,04 1,22 1,44<br />

0 0,71 0,72 0,73 0,85 1,00 1,17 1,37<br />

-5 0,69 0,70 0,82 0,96 1,12 1,31<br />

-10 0,68 0,79 0,92 1,07 1,26<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 5,5 6,0 6,5 7,0 7,5 8,0<br />

K∆p 3,50 2,48 2,02 1,75 1,57 1,43 1,32 1,24 1,17 1,11 1,06 1,01 0,97 0,94 0,90 0,88<br />

∆p (bar) 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12,0 13,0 14,0 15,0 16,0 17,0 18,0 19,0 20,0<br />

K∆p 0,85 0,83 0,80 0,78 0,76 0,75 0,73 0,72 0,69 0,66 0,64 0,62 0,60 0,58 0,57 0,55<br />

In cases of subcooling of more than 15K please use additionally<br />

the correction factors on page 56 of this brochure.<br />

68 A2.5.1/0706/E

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