Form and Operation Mode Analysis of a Novel Solar-Driven Cogeneration System with Various Collector Types

Table 4

The specific state of the solenoid valves in different operating modes when the solar collectors are PTC.

Operating modes	Operating conditions	V1	V2	V3	V4	V5
PM1		Off	Off	Off	Off	On
PM2		On	Off	Off	On	On
PM3		On	Off	Off	On	Off
PM4		On	Off	On	On	Off
PM5		On	On	On	Off	Off
PM6		On	Off	On	Off	Off