Hand held rotating calculator used for sizing supply and return duct systems using the equal friction design method. Includes scales for friction loss per unit length, air volume, air velocity, round duct diameter, and rectangular duct diameters. One side uses English units, the other side uses Metric units. Includes a protective sleeve with ASHRAE recommended design air velocities for system components/applications.
- HVAC System Design Tools
Discussion of the fundamentals of the refrigeration cycle as it pertains to an absorption water chiller.
Presentation of the components, operation, and application of a helical-rotary (screw) water chiller.
Coverage of fan system performance, types of fans, and methods of control.
Variable Refrigerant Flow Systems focuses on VRF systems, which use a combination of zone‐level indoor terminals and outdoor components to provide heating and air conditioning.