A condenser having very large surface area over a relatively short effective length by employing more than one coil. Two types are available:
QC4: two coils which are independent of each other. If desired they can be fed from separate water supplies.
QC13: double coil design having common water inlet. Approx. Socket Cone
surface size area
QC4/13/SC QC13/55
QC13/55/2
x 10–2m2 5.5
9.0 18.0 Double surface, Davies
With increased surface area and effectiveness compared with a corresponding Liebig condenser.
Approx. Socket Cone surface size area
size
QC5/11/SC QC5/12/SC QC5/13/SC QC5/22/SC
QC5/23/SC QC5/24/SC QCX5/23/SC QCX5/25/SC
x 10–2m2 1.7
1.7 2.3 2.3
3.0 3.0
14/23 19/26 24/29 19/26
24/29 29/32
Approx. effective x overall
lengths, mm
14/23 160 x 275 19/26 160 x 295 24/29 160 x 300 19/26 205 x 340
24/29 205 x 345 29/32 205 x 365
3.0 — 24/29 205 x 350 3.0 — 34/35 205 x 360
24/29 34/35 34/35
size
Approx. effective x overall
Inland Revenue
Used for standard Inland Revenue test and control methods by brewers etc, the Inland Revenue condenser employs the use of coolant flow outside the coil. This condenser is very efficient but must not be used for fast rates of distillation. It is particularly useful for removing condensable vapours from non-condensable gases.
Approx. Socket Cone surface size area
size lengths, mm
24/29 207 x 390 34/35 230 x 440 34/35 420 x 660
QC6/12/SC QC6/13/SC
Jacketed coil
A double surface condenser having a coil as an inner cooling surface. This type has approximately twice the surface of a plain double surface condenser of the same effective length.
Approx. Socket Cone surface size area
size
QCX6/22/SC QCX6/33/SC QCX6/44/SC QCX6/05/SC
Allihn
An inexpensive condenser, giving greater surface area than the corresponding Liebig type due to the bulb sections. This type is normally used under reflux.
Approx. Socket Cone surface size area
size x 10–2m2
QCX7/02/SC QCX7/03/SC QCX7/04/SC QCX7/05/SC
QCX7/06/SC QCX7/08/SC QCX7/33/SC
Approx. effective x overall
lengths, mm
1.3 — 19/26 250 x 400 1.3 — 24/29 250 x 405 1.3 — 29/32 250 x 415 1.3 — 34/35 250 x 335