Car parking garage with water mist fire protection system for increased heights, methods and water mist sprinklers therefor

A method of car parking garage fire protection comprising:

• obtaining a fire protection system comprising
• a supply pipe system having a parallel portion disposed parallel to a longitudinal axis, at least one water mist sprinkler coupled to the parallel portion of the supply pipe system, the at least one water mist sprinkler including a frame body having an inlet for receipt of an extinguishing fluid from the supply pipe system, an outlet with a passageway extending between the inlet and the outlet to define a discharge coefficient of a nominal metric K-factor of below 32;
• a seal assembly and a heat-responsive trigger to support the seal assembly in the outlet;
• and
• a deflector coupled to the frame body and spaced from the outlet for distribution of the extinguishing fluid;
• providing the at least one water mist sprinkler for installation in a car parking garage between a floor deck and a ceiling deck of a car parking garage spaced about the longitudinal axis extending parallel to the ceiling deck, defining an effective height range between the floor deck and the ceiling deck in a direction perpendicular to the longitudinal axis,
• wherein the effective height range is up to 4 meters.

A method of car parking garage fire protection comprising:

• installing a supply pipe system between a ceiling deck and a floor deck of a car parking garage spaced about a longitudinal axis extending parallel to the ceiling deck, defining an effective height range between the floor deck and the ceiling deck in a direction perpendicular to the longitudinal axis;
• and
• coupling at least one water mist sprinkler to a parallel portion of the supply pipe system disposed parallel to the floor deck,
• the at least one water mist sprinkler including a frame body having an inlet for receipt of an extinguishing fluid from the supply pipe system, an outlet with a passageway extending between the inlet and the outlet to define a discharge coefficient of a nominal metric K-factor of below 32, a seal assembly and a heat-responsive trigger to support the seal assembly in the outlet, and a deflector coupled to the frame body and spaced from the outlet for distribution of the extinguishing fluid, and the ceiling deck for protection over the effective height range,
• wherein the effective height range is up to 4 meters.