condensing unit aluminium closeup finned obsolete tubes grill vertical texture, compressor and air conditioning system. industrial

aluminium aluminum background chiller closeup coil component condensation condenser condensing condensor conditioner conditioning coolant cooler cooling dirt engine equipment evaporator exchange exchanger fin gray grid grill grille heater heatsink horizontal hvac industrial lines mesh metal obsolete old part pattern pipe pipeline radiator repetition service system technology temperature texture tube vertical