Abstract: . . .  performance collectors Qu = Ac Fhx FR [ S − U c (T f ,i − Ta )] MAE 421 Course Notes Spring 2005 Chapter 4 Lecture 6 Page 13  . . .
. . .  Course Notes Spring 2005 Chapter 4 Lecture 6 Page 8 Heat Exchangers (HX) Two fluid streams exchange thermal energy – one stream is heated, the other is cooled. There are many heat exchanger configurations. . . .
. . .  Course Notes Spring 2005 Chapter 4 Lecture 6 Page 12 How does the heat exchanger affect solar energy collected? Use the heat exchanger factor, Fhx Fhx = FR ' = FR (4.44) Figure 4.14 in textbook . . .
. . .  heat transfer: (4.34) Subscripts: h – hot fluid (collector) – water or glycol c – cold fluid (storage) – water Maximum rate of heat transfer: One of the two fluids undergoes the maximum temperature . . .
. . .  is also defined as the following: ε= q qmax = where the number of transfer units, NTU = (4.40) and the heat capacitance ratio C, C= (4.41) Use Table 4.9 for correlations for ε for difference . . .
. . . Chapter 4: Thermal Energy Storage and Transport Solar energy is time dependent, energy storage necessary because of mismatch in timing . . .
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