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ASC02-01WM
3.1.1
3.1.2
3.1.3
EN2B-0365GE51 R0710
3 Description
3.1
Controller in the solar circuit
The purpose of the controller
The controller controls the pump in a solar thermal system.
The structure of the solar circuit
Temperature sensor 1
(collector sensor)
Solar circuit
Pump
The function of the solar circuit
The controller constantly compares the temperatures between the
collector (T1) and the lower area of the storage tank (T2) via
temperature sensors. Once the sun heats the collector and there
is a temperature difference of 8 K (adjustable parameter) between
the collector and the storage tank, the pump is switched on.
The pump extracts the heat transfer fluid from the lower cooler
area of the storage tank and pumps it to the collector. The heat
transfer fluid in the collector is heated by the sun and flows back
to the storage tank.
The heat transfer fluid heats the domestic water via a heat
exchanger located in the storage tank.
T1
Collector
Temperature sensor 2
(lower area of storage tank)
Temperature differential controller
Storage tank
T2
Description
11
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