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PowerPoint ® Presentation Chapter 8 Hydronic System Balancing and Building Commissioning Testing, Adjusting, and Balancing of Chilled and Hot Water Hydronic.

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Presentation on theme: "PowerPoint ® Presentation Chapter 8 Hydronic System Balancing and Building Commissioning Testing, Adjusting, and Balancing of Chilled and Hot Water Hydronic."— Presentation transcript:

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2 PowerPoint ® Presentation Chapter 8 Hydronic System Balancing and Building Commissioning Testing, Adjusting, and Balancing of Chilled and Hot Water Hydronic Systems Commissioning of Commercial Buildings HVAC Systems

3 PowerPoint ® Presentation Chapter 8 Hydronic System Balancing and Building Commissioning Testing, Adjusting, and Balancing of Chilled and Hot Water Hydronic Systems Commissioning of Commercial Buildings HVAC Systems

4 Chapter 8–Hydronic System Balancing and Building Commissioning Circulation pump testing is required when a new system is installed.

5 Chapter 8–Hydronic System Balancing and Building Commissioning Variable-frequency drives need to be tested and adjusted to fit the correct operating requirements.

6 Chapter 8–Hydronic System Balancing and Building Commissioning Electronic tachometers measure the speed of a moving object.

7 Chapter 8–Hydronic System Balancing and Building Commissioning The speed of a rotating shaft can be measured by an electronic tachometer.

8 Chapter 8–Hydronic System Balancing and Building Commissioning Digital multimeters record measurements of electrical properties.

9 Chapter 8–Hydronic System Balancing and Building Commissioning Digital multimeters are relatively easy to use to measure the line voltage of an variable- frequency drive.

10 Chapter 8–Hydronic System Balancing and Building Commissioning Clamp-on ammeters measure current in a circuit.

11 Chapter 8–Hydronic System Balancing and Building Commissioning The procedure for using clamp-on ammeters to measure current involves several steps.

12 Chapter 8–Hydronic System Balancing and Building Commissioning Hydronic manometers measure water pressure to help balance a hydronic system.

13 Chapter 8–Hydronic System Balancing and Building Commissioning Hydronic manometer procedures are used to check pump performance and verify terminal flow.

14 Chapter 8–Hydronic System Balancing and Building Commissioning Mechanical gauges measure pressure and are available in a variety of ranges.

15 Chapter 8–Hydronic System Balancing and Building Commissioning Flow-balancing valves often have a manual valve with an indicator to show how much the valve is open.

16 Chapter 8–Hydronic System Balancing and Building Commissioning The flow rate through balancing valves can be determined using charts and graphs.

17 Chapter 8–Hydronic System Balancing and Building Commissioning If the gallons per minute of flow and the temperature differential of the water in a coil are known, the amount of British thermal units removed can be determined.

18 Chapter 8–Hydronic System Balancing and Building Commissioning The water flow rate through a valve can be determined if the flow coefficient and pressure drop are known.

19 Chapter 8–Hydronic System Balancing and Building Commissioning While building commissioning can be expensive, often the cost is less than 1% of the total construction costs.


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