Installation should take into account factors such as firm fixing, structural safety, wind protection, lightning protection and roof drainage. It is fixed on the waterproof layer of the roof to avoid damaging the waterproof layer and causing roof leaks.
Specific method: pour concrete pillars directly on the roof and embed expansion bolts on the pillars. Location of piers and abutments: Piles and abutments must be located above the load-bearing wall. Direct pouring onto the ground is strictly prohibited (it is easy to overload, causing the floor to deform and leak). The size of the pier is determined based on local wind load and wind resistance calculations. In order to increase stability, several households are advised to build a joint pier together. Leave drainage holes on the piers to ensure smooth drainageon the roof.
Rooftop solar water heaters usually exceed the height of the roof parapet, so the originally designed roof lightning protection system is ineffective for solar water heaters . In buildings where solar water heaters are retrofitted, lightning protection measures should be considered. For buildings considering installing solar energy from the design phase, measures such as fixing and lightning protection should be considered during the design.
Main relevant national standards and industrial standards for solar cells
GB2297-89 Solar photovoltaic energy system terminology;
GB2296-2001 Naming method of the solar cell model;< /p>
GB12632-90 General specifications for monocrystalline silicon solar cells;
GB6497-1986 General provisions for theground-based solar cell alignment;
GB6495-86 Ground-based solar cells Electrical performance test methods;
IEEE 1262-1995 testing and certification specifications for photovoltaic modules;
GB/T 14007-92 General specifications for terrestrial solar cell modules;
GB/T 14009-92 Parameter measurement method of solar cell module;
GB 9535 Environmental test method for onshore solar cell module;
GB/T 14008-92 Offshore solar cell module General specifications;
GB11011 -89 General provisions for performance testing of amorphous silicon solar cells;
GB/T6495.1-1996 Photovoltaic devices Part 1: Photovoltaic current -voltage characteristics Measurement;
GB/T6495.2-1996 Photovoltaic devices Part 2: Requirements for standard solar cells;
GB/T6495.3-1996 Photovoltaic devices Parte 3: Grounding use measurement principles and standard spectral irradiance data of photovoltaic devices;
GB/T6495.4-1996 Temperature and irradiance correction method for the measured characteristics IV of crystalline silicon photovoltaic devices
SJ/T11127 -1997 Surge protection of photovoltaic (PV) power generation systems - Guidelines
GB/T9535 -1998 Identification and finalization of the design of crystalline silicon photovoltaic modules for ground use
GB/T18210-2000 On-site measurement of I-V characteristics of crystalline silicon photovoltaic (PV) panels
GB/T18479-2001 Overview and guidelines for ground-mounted photovoltaic (PV) power generation systems< /p>< p>GB/T19064-2003 Technical conditions and test methods for energy systems domestic photovoltaic solar