industrial heat exchange system calculations software

Table 1 provides some common heating media and their relative advantages and disadvantages. Other factors for consideration include the specific heat capacity, cost of the utility, and process safety.

Selection of the type of hot utility mainly depends on the inlet and outlet target temperatures required by the process stream.

Using a utility, for example air, cooling water, and refrigerant, to provide cooling duty to a process stream.

Using a utility, for example water, steam, hot oil, and molten salt, to provide heat duty to a process stream.

A specific example of this would be developing a heat exchanger network to recover the heat from a distillation train to preheat the incoming feed and preheating of crude for water/oil separation.

Utilizing process heat recovery, which can be optimized via the pinch technique for more complex systems (refer to the Pinch Analysis Info Sheet).

For more information refer to the Combined Heat and Power Info Sheet. Heat can be transferred via a heat exchanger to heat a process stream directly or indirectly via an intermediate heating medium such as water or hot oil. Waste heat recovery in the exhaust of an electricity-generating gas turbine.Several examples of heat exchanger applications follow: When there is no process stream available, a utility stream is required to provide the heating or cooling duty required. The selection between using a direct process-to-process heat exchanger versus using utilities to transfer heat depends on the temperature and pressure required by the process stream and whether there is an available process stream to provide that duty given the temperature approach required. In general, the heat exchangers are used to exchange heat between two or more process streams or between process stream(s) and a utility stream, which can be either hot or cold utilities. Heat exchangers can also improve a system’s energy efficiency by transferring heat from systems where it is not needed to other systems where it can be usefully used. Therefore, any inefficiency in the heat transfer at exchangers will require a higher amount of duty from the furnace or steam. Typically, any direct heat input to the system comes from a furnace or steam. Heat exchangers are required to provide heating and/or cooling to meet a process requirement. The media may be separated by a solid wall to prevent mixing or may be in direct contact. These media may be a gas, liquid, or a combination of both. Heat exchangers are used to transfer heat from one medium to another.

Industrial heat exchange system calculations software