Water tank solar heating system - has temp. sensors on solar heater to control operating valve, pump and auxiliary heater

摘要

A solar heating system for a water supply has water tank (1) with a heating coil connected to the solar heater (3) and a water heating tank (2) with a heater (7) which can be underneath and a transparent cover (10) over the top. A three way valve (11) is operated e. g. at night when the solar collector does not receive heat. The temp. is monitored by a temp. sensor (14) inside the solar heater. A thermostat (12) on the water tank (12) starts up the burner (7) and a water circulating pump (13). This pump is also operated by another temp. sensor (15) on the solar heater, when the temp. rises. The first sensor (14) is also connected to a temp. monitor (16) on the heating tank (2) to operate the three way valve and circulating pump until the water in the main tank (1) reaches its max.