Origin	China
Brand Name	Sunhome

These systems pump heat-transfer fluids(usually a glycol-water antifreeze mixture)through the solar water heater.Heat exchangers transfer the heat from the fluid to the water that is stored in tanks.Double-walled heat exchangers or twin coil solar tanks prevent contamination of household water.Some standards require double walls when the heat-transfer fluid is anything other than household water .Closed-loop glycol systems are popular in areas subject to extended subzero temperature because they offer good freezd protection.However,glycol antifreeze systems are more expensive to purchase and install and the glycol must be checked each year and changed every few years,depending on glycol quality and system temperatures.

Model	Tank Capicaty	Heat pipe or U Pipe Collector		Work Station
		Φ58X1800	No.
SHCLS150S	150L	Φ58X1800	15(1 collector for 15 tubes)	A circulating unit system that gather controller and pump station
SHCLS200S	200L	Φ58X1800	20(1 collector for 20 tubes)
SHCLS300S	300L	Φ58X1800	15X2 (2 collector for 15 tubes)
SHCLS400S	400L	Φ58X1800	20X2 (2 collector for 20 tubes)
SHCLS500S	500L	Φ58X1800	15X2+20X1 (2 collector for 15 tubes, and 1 collector for 20 tubes)