1. The scope and uses of air condition
2. Physical principles
8. Fluid flow in Piping and duct
9. Piping ,Valves , Ducts , and insulation
1. The scope and uses of air condition <<<
2. Physical principles
p 55 , 2.15 Calculation of sensible and latent heat changes
process เกิดใน HVAC , โดยทั้ง add / remove heat from air or water
procedure ในการ calculating amount of heat ที่ involve
Specific heat – (c) substance ถูก defined as amount of heat in BTUs ที่ต้องการ change – temp 1 lb of substance by 1F ,us unit
heat of liquid water – 1BTU/lb-F at 60F
8. Fluid flow in Piping and duct