A DIY solar thermal hot water system using a collector plate. The Top. Thermosiphon Thermal Solar Water Heater. DIY Evacuated Tube Solar Water Heater. DIY SOLAR TUBES EVACUATED VACUUM TUBE Solar Water Heater: Boil water. This is a simple process to make your owns solar evacuated vacuum tubes. dark inner bottle transferring the radiant heat into the liquid in the inner bottle. The parabolic solar collector can be built at home, with ordinary off-the-shelf materials, using only a saw and a drill. Download the instructions: dry-en.pdf. Depending on how you buy. If used to heat water, this is almost 20 times cheaper than buying evacuated tube water heaters of the same capacity. Pictures of home-built. Building your own solar thermal panel for heating water is simple. . made with an array of double layer glass tubes, with a vacuum in between. Discussion on creating heat and hot water with solar for residential and commercial use. This allows a solar hot water system using an evacuated tube collector too. This means that evacuated tube water heaters can perform well and can heat water. The evacuated tube system is a solar collector for water heating that uses a vacuum glass tube too. This solar water heater provides an easy DIY installation. Evacuated tube collects all of the suns ray all day long. reflection off the surface of a “flat” collector. Frost-protected and on any roof. self-cleaning. The heat transfer fluid then continues its journey around the system and back out to the solar water heater to be reheated. The fitting of a Solar Water Heating system using evacuated tubes can be carried out by any able DIY enthusiast with.