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Show can more effectively be cascaded through the plant thus reducing primary fuel requirements. Thermal storage is, however, only applicable when a temporal mismatch occurs between the energy supply and the need for the heat. Thus, TES is applicable primarily in batch-type processes rather than continuous ones. The purpose of this paper is to present some of the identified applications for TES in the industrial sector to Familiarize the reader with the general type of applications for which TES can be considered. GENERAL FACTORS GOVERNING THE USE OF TES When deciding if TES is suitable for a particular application several technical factors must be examined. These include supply temperature, temperature required by the identified use, and timing of the supply and user needs. For example, in a plant that is continuously discharging high-temperature exhaust gases and elsewhere in the process continuously raising steam, an opportunity exists for recovery of heat in the exhaust gas. However, there may be no need for TES since the energy supply and use occur simultaneously. Alternatively, energy recovery and reuse may not be possible without TES as is the case in paper dryers where steam vented to the atmosphere during a paper tear cannot be reused unless a TES unit is employed. If a TES function in indicated, it generally is integrated into a more comprehensive energy recovery system such that some of the recovere energy is used directly With the remainder being.stored for later use. One example of this is found in the food processing industry where energy contained in the cooking cycle, which is normally rejected to the water disposal syste , can be recovered. A portion of this energy can be utilized directly to heat. incoming make up water with the remainder being stored and used for the non-production shift cleanup operation . Once it has been determined thai TES can play .1 beneficial cole Ln recovering energy that would otherwise be rejected] additional site-specific data is required to determine whal specific TES design Ls optimum. These factors include space limitations, environmental1 and safety concerns, charging and discharging requirements, and peripheral equipment (heat exchangers, controls, thermal transport system) needs. 8-4 |