Heat pipe solar collector 1.For 5years warranty! 2.OEM is welcomed! 3.Sample is ok The characteristic of Heat Pipe Solar Collectors1) Reliable, efficient, twin ... fuel cost.The Principle of ThermosyphonMetal Heat Pipe Solar Collector consists of a vacuum tube, a heat pipe, a metal heat absorption wing and ... /180/200JX-5818-303.85301960×2375×13094.367/148/175 Solar Collector