Research Article

Thermal Storage for the Analysis of Hybrid Energy Systems Based on Geothermal and Solar Power

Table 2

Preheater model data.

Model dataPreheater (1)Preheater (2)

Exterior valve area3867638674
Diameter of the tube (outside)1616
Number tube75997599
Type of tubeShortShort
Design of tube30 trilateral30 trilateral
GHT coefficient (pure)182.4355.6
GHT coefficient (dirty)157.8272.5