obtained an analytical expression for the
water temperature of an integrated photovoltaic thermal solar
water heater under constant flow rate hot water withdrawal.
Analysis is based on basic energy balance for hybrid flat plate
collector and storage tank, respectively, in the terms of design and
climatic parameters. Further, an analysis has also been studied for
hot water withdrawal at constant collection temperature. It is
observed that the daily overall thermal efficiency of an integrated
photovoltaic thermal solar water heater system increases with
increase constant flow rate and decrease with increase of constant
collection temperature. This type of thermal analysis is used to
design the hot water systems based on flow rate and number of
collectors.