runback


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runback

[′rən‚bak]
(chemical engineering)
A pipe through which all or part of a distillation column's overhead condensate can be run back into the column, instead of being drawn off as product.
(engineering)
To retract the drill feed mechanism to its starting position.
To drill slowly downward toward the bottom of the hole when the drill string has been lifted off-bottom for rechucking.
References in periodicals archive ?
As is briefly reviewed above, researchers have done much work on the study of multilayer structure heat conduction and ice melting process based on enthalpy method, while the study of the in-flight deicing process, which involves sustained droplet impingement and water film runback, is quite rare.
Nicky Henderson's 7yo, a dual winner over hurdles, is open to plenty more improvement as that Plumpton success was only his second runback from an absence of two-and-a-half years.
"He was having his first runback and he did it well and he has come out of the race grand so it's great," said Elliott "We had him back in training last year but he got a bit of heat in his tendon so we had to ease off him.
Trainer Jeremy Noseda said: "I was thrilled with Sixties Icon's first runback this season.
Goldstein prefers a 5.3 French flexible catheter with a polyethylene acorn to prevent runback. Other clinicians prefer the "firm and spear-like" Tampa catheter.
Badly in need of a runback specialist, he allowed his star cornerback to talk him into using him as the kick-off returner.
The top prize was a Subaru Outback for a runback of the opening kickoff or the kickoff to begin the second half for a touchdown by a Cardinals player.
The distribution principle of runback water in control volume is as follows:
The train's signalling, control and train protection systems include a Transmission Voie-Machine (TVM) signalling system, Controle de Vitesse par Balises (KVB) train protection system, Transmission Beacon Locomotive (TBL) train protection system, Runback Protection System (RPS), European Train Control System (ETCS), Automatic train protection (ATP) system, Reactor Protection System (RPS) and Sibas 32 train control system.
The problems begin as the large water droplets find their way aft past the de-icing surfaces, a condition called runback. The ice coating also begins changing the contour of the wing and blocking the airflow across elevators and ailerons.
Punctuating Seattle's dominance were a 69-yard interception return touchdown by linebacker Malcolm Smith to make it 22-0, and Percy Harvin's sensational 87-yard kickoff runback to open the second half.