Energy Balance

In order to optimize design parameters of any solar system, one should know the thermal modeling based on solar radiation incident on solar system (Chap. 1 ) and basic heat transfer (Chap. 2 ) including all design parameters. For thermal modeling, the basic energy balances based on first law of thermodynamics should be properly written. In this chapter, we have discussed the basic energy balance of single and double glazed window, bare and blackened and glazed solid surface, opaque and semi-transparent photo-voltaic (PV) module, flexible PV module and flexible PV-TEC module. The respective temperature, electrical efficiency and the rate of DC power have been discussed and calculated for each case.