Q1. (12 marks total) A facility is 50' long x 45' wide x 20' high. Manufacturing Operations require 4 air changes per hour. It is easiest to run the fan at a motor speed of 1800 rpm. The resistance of all the ducting is 1.5 inches of water, and outlet dampers are used. a) (3 marks) Select the most appropriate fan to use in this application. b) (3 marks) Vendors quote 63% efficiency for the fan. Determine the required electric motor size in units of HP. c) (4 marks) 6 months after installation, measurements show that average flow rate is 2600 CFM and that the fan draws 0.732 HP of power. Determine what happened? Use a sketch and calculations to explain. d) (2 marks) What features, items or auxiliary equipment could have been added to facilitate and optimize the system performance and matching? How would you justify these features? Q1. (12 marks total) A facility is 50' long x 45' wide x 20' high. Manufacturing Operations require 4 air changes per hour. It is easiest to run the fan at a motor speed of 1800 rpm. The resistance of all the ducting is 1.5 inches of water, and outlet dampers are used. a) (3 marks) Select the most appropriate fan to use in this application. b) (3 marks) Vendors quote 63% efficiency for the fan. Determine the required electric motor size in units of HP. c) (4 marks) 6 months after installation, measurements show that average flow rate is 2600 CFM and that the fan draws 0.732 HP of power. Determine what happened? Use a sketch and calculations to explain. d) (2 marks) What features, items or auxiliary equipment could have been added to facilitate and optimize the system performance and matching? How would you justify these features