What is tubular heat exchanger?

A tubular heat exchanger (THE) is used to warm or cool a product by exchanging heat between the process fluid and a service fluid, which is typically water, ice water, glycol or steam. The hot or cold service fluid flows around the tubes within the THE and heat is transferred between the product and the media.

Where are tubular heat exchangers used?

Tubular heat exchangers is the collective term for a wide variety of heating systems to heat water thermal oil, glycol, crude oil, gas, air for combustion and are also used in biogas reheating and steam production.

What is Zs on P&ID?

A valve initiating shutdown. ZSC. Position/unit switch closed. Limit switch indicating a valve is closed.

What is the principle of heat exchanger?

Heat exchangers work because heat naturally flows from higher temperature to lower temperatures. Therefore if a hot fluid and a cold fluid are separated by a heat conducting surface heat can be transferred from the hot fluid to the cold fluid.

What is Zso and ZSC?

ZSC. Position/unit switch closed. Limit switch indicating a valve is closed. ZSO. Position/unit switch open.

What are the symbols for the compressor and heat exchanger?

The symbols for the compressor such as reciprocating, centrifugal, rotary, liquid ring, and turbine driven. These are the symbols for the heat exchanger. On the drawing you can see both types of symbols are used the one on the right-hand side are more frequent than the one on the left-hand side. Static equipment is straightforward.

Why shell and tube heat exchangers are so popular among process designers?

This versatility is one of the reasons why shell and tube exchangers are so popular among process design engineers. Design of shell and tube exchangers is commonly governed by the standards created by TEMA (Tubular Exchangers Manufacturers Association). Following diagram is the structure of a TEMA style shell and tube heat exchanger.

What is a shell heat exchanger?

This type of heat exchangers consists of metal tubes passing through another metal enclosure, which is referred to as the ‘shell’. So typically we have a fluid on shell side and anther fluid on the tube side.

What is P&ID for heat exchanger design?

Apart from the internal structure, another important diagram for heat exchanger design, is the piping & instrumentation diagram or P&ID for heat exchanger. Following diagram is a typical P&ID arrangement for a shell & tube heat exchanger.