14 in a heating coil what advantage does heating

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14) In a heating coil, what advantage does heating water have over steam?
15) When referring to humidity, why is a cooling coil deeper (more rows) than a heating coil?
16) How should ultraviolet germicidal lamps be handled?
17) Describe the problems associated with poorly maintained humidifiers.
UNIT 75 FANS AND AIR-HANDLING UNITS 4
18) If the inside temperature is 70oF and the RH is 50%, how low would the outside temperature have to be to form condensation on a double pane window?
19) Why is the steam grid humidifier recommended?
20) What horsepower will the motor be required to increase the airflow of a fan to 1000 CFM if an XA horsepower motor is required to move 800 CFM?
21) What are the characteristics that AMCA fan classes are based on?

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