Sunday, January 24, 2016: 8:00 AM-9:00 AM
The Great Debate
Chair:
Robert C. Walker, Belimo Aircontrols Usa
Technical Committee: 06.01 Hydronic and Steam Equipment and Systems
This seminar proposes to compare design and benefits of pressure independent control valves versus standard control valves. It covers system background, valve design evolution as a result of system requirements and ultimately the benefits provided by the control valves. The presentation ethos/pathos/logos aims to paint a detailed and complete picture of the possibilities of solutions at the disposal of design engineers, contractors and facility technicians.
1 Hydronic Design with Standard Two-Way Control Valves
 |
Larry Konopacz, Xylem Bell & Gossett |
The design of a hydronic system with a standard two-way control valve with manual balancing valve solution. The discussion will address the need for balancing the system and controlling the load, and address the need for measurement and verification. The two-way control valve and balance valve solution will focus on the control valves responsibility in responding to load variations in the conditioned space as well as responding to variations within the hydronic system. Design considerations will be addressed as will advantages and disadvantages of the design in a typical hydronic system.
2 Hydronic Design with Pressure Independent Control Valves
 |
Hooman Daneshmand, P.E., PRO Hydronic Specialties, LLC |
The pressure independent control valve will be examined as two valves within one body that separate the duties of controlling pressure variations within the hydronic system by way of a pressure controller – a form of pressure reducing valve – and a standard two-way control valve. The advantages and disadvantages of designing with pressure independent control valves, as well as design considerations, will be addressed. These will be highlighted utiilzing the same hydronic system from the initial presentation that addressed standard two-way control valves.