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Comment Processing & Handling

Steam Tracer Lines and Traps

By Chemical Engineering |

Steam tracer lines are designed to maintain the fluid in a primary pipe at a designated uniform temperature. In most cases, these tracer lines are used outdoors, which makes ambient weather conditions a critical consideration. The primary purpose of steam traps on tracer lines is to retain the steam until its latent heat is fully utilized, and then discharge the condensate and non-condensable gases. As is true with any piece of heat transfer equipment, each tracer line should have its own trap. Even though multiple tracer lines may be installed on the same primary fluid line, unit trapping is required to prevent short-circuiting. Figure 1. A condensate manifold shows multiple tracer lines and steam traps Figure 2. (above) The graph depicts heat loss of an uninsulated pipe. The temperature differential is derived from the process temperature minus ambient design (T=75ËšF) In selecting and sizing steam traps, it is important to consider their compatibility with the objectives of the system, as traps must accomplish the following: 1. Conserve energy by operating reliably over a long time period 2. Provide abrupt periodic discharge in order to purge the condensate and air from the…
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