shows the electrical power output profiles for the CSHP system over the course of a day, for the case in which electricity
production from the system is prioritised and solar fluid flow through the hot water cylinder heating coil is set to zero.
The climate data used is that for an ‘‘annual average’’ day, which is a 24-h profile made up of annually averaged values for each hour of the day.
1 In this figure, the CSHP system featuring a PTC solartracking array (Fig. 6a) is compared to the system featuring a fixed
ETC collector array (Fig. 6b).
The ORC evaporation pressure and system flow-rates are chosen to be equal to those that maximise the total daily work output for each collector variant (taken from Section3.4),
while obeying the full set of relations stated in Section 2.2.