# Category Archives for **Coil Sizing**

## LTX Coil Sizing – Coil Lengths

With the known temperatures on each end of the coil, the heat duty for each coil can be calculated from the heat transfer theory. Since the bath is at a constant temperature, LMTD can be calculated as: The overall film … Continue reading

## LTX Coil Sizing – Choose Wall Thickness

Before choosing a wall thickness it is necessary to choose a pressure rating for the coil. Typically, the high-pressure coil (L1) is rated for the shut-in pressure of the well, and the low-pressure coil (L2) is rated for the maximum … Continue reading

## LTX Coil Sizing – Choose Coil Diameter

Erosional flow criteria will almost always govern in choosing the diameter. Sometimes it is necessary to check for pressure drop in the coil. Typically, pressure drop will not be important since the whole purpose of the line heater is to … Continue reading

## LTX Coil Sizing – Choose Temperatures

In order to choose the coil length and diameter, a temperature must first be chosen upstream of the choke; the higher Th the longer the coil L] and the shorter the coil L2. In Heat Transfer Theory we showed that … Continue reading