Solar Water Heater Home / Projects / Solar Water Heater Al ard Project 380 vacuum tubes, provide 3800 liters of hot water daily Bulgarian Embassy building 200 vacuum tubes, provide 2000 liters of hot water daily Kantia Hotel 300 vacuum tubes, provide 3000 liters of hot water daily Dar Zamraia Hotel 150 vacuum tubes, provide 1500 liters of hot water daily Royal Palace Hotel 200 vacuum tubes, provide 2000 liters of hot water daily « 1 2 »