circulating fluid

circulating fluid

[′sər·kyə‚lād·iŋ ′flü·əd]
(engineering)
A fluid pumped into a borehole through the drill stem, the flow of which cools the bit and transports the cuttings out of the borehole.
References in periodicals archive ?
Shall Include Microprocessor Controls (the Circulating Fluid Temperature To A1 Ac Of Set Point).
The other problem with glycol is called "stagnation," where in a system that is not constantly circulating fluid during daylight hours, heat inside the collector can reach 400 to 600[degrees]F which can degrade the glycol mixture over time.
Later, it can heat or cool the circulating fluid as necessary to maintain the correct temperature.
The chemicals used to adjust water quality for these larger systems are often not acceptable for use when the circulating fluid is also connected to a ground loop.
Electric heaters are commonly used to inject heat into the ground by heating the circulating fluid.
Also, Acuna (2010) discussed an annular prototype in which temperature differences between the borehole wall and the circulating fluid are measured to be very low.
The main consumers of current are the electrical pump that drives the hydraulic system, electrical heating and the temperature control of circulating fluid media.
Other causes include dehydration (less circulating fluid equals a higher calcium concentration) as well as long-time overuse of vitamin A and D supplements.
Around the ice is circulating fluid - its temperature controlled to 1/100th of a degree Celsius - that keeps the ice at its melting point so it slides on a thin film of water.
Outotec's delivery covers the engineering, supply and construction of a circulating fluid bed calcination plant with a capacity of 1,600 tons of alumina per day.
But on the Space Technology 5 mission launched in March, there was no room for anything so bulky, let alone a more active circulating fluid cooling system.

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