Environmental Engineering Reference
In-Depth Information
TABLEĀ 7.15
TES Process Heating Applications
OptionsforIndustrial
andAgricultural
ProcessHeating
Temperature
(C)
StorageMedium
Type
Process hot water
60 to 90
Deliverable water in
thermocline tank or
two tanks
Sensible
Low pressure steam
100 to 130
Pressurized water with
indirect HX
Sensible
Petroleum oil in
thermocline tank or
two tanks
Sensible
Pressurized water
delivered as steam
Latent
Continuous liquid
-vapor TC heat pump
TC
100-pound steam
170
Petroleum oil in
thermocline tank or
two tanks
Sensible
Pressurized water
delivered as steam
Latent
High pressure saturated
steam
300
Petroleum oil in
thermocline tank or
two tanks
Sensible
Petroleum oil/rocks
(dual media) in
thermocline tank
Sensible
Encapsulated PCM with
evaporative HX
Latent
Bulk PCM with indirect
HX
Latent
Pressurized water under
or above ground
Latent
Crop drying (air
heating)
50 to 70
Rock beds
Sensible
Liquid desiccant, yearly
averaging
TC
TC = Thermochemical
Source:
de Winter, F. 1990. Solar Collectors, Energy Storage, and Materials , MIT Press,
Cambridge, MA. With permission.
can approach boiling [14]. Phase change materials and advanced soil heating
systems are occasionally used instead. For systems installed in individual
buildings, additional space is required to accommodate the storage tanks.
In all cases, effective above-ground insulation and heavy insulation of the
building are required to minimize heat loss from the building, and hence the
 
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