Trane Engineers Newsletter LIVE: Variable-Speed Compressors on Chillers

Описание: Trane Engineers Newsletter LIVE: This Trane Engineers Newsletter Live will discusses the operational, performance and application differences for centrifugal (dynamic compression) and helical-rotary (positive displacement) compressors. Discussion includes an overview of how variable-speed drives affect chilled-water system components, physics of centrifugal compressor chillers and screw compressor chillers, applications that benefit from each technology, importance of proper life-cycle analysis supported by examples and application considerations. Attendees will leave with an understanding of which technologies bring real value to different system applications. After viewing this program, you will be able to: summarize the effects of VFDs on centrifugal and screw compressors in terms of physics (load/lift and performance), identify applications that offer customer benefits for each technology, and understand the importance of accurate life-cycle analysis (and provide examples).

To download handouts or earn continuing education credit, please visit trane.com/ContinuingEducation.
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Chapters:
0:00 Introduction
2:26 Affinity Laws 2012 ASHRAE Handbook HVAC Systems and Equipment
4:51 2006 ENL Summary Chilled and Condenser Water Pumps
6:10 2006 ENL Summary VSDs and Their Effect on System Components
7:50 Centrifugal Compressors on Chillers Key Points
9:26 Centrifugal Compressors on Chillers Terms
10:58 kW/ton Performance vs. Lift
11:53 Hot Gas Bypass (HGBP) Cycle
12:31 HGBP Performance
13:33 Fixed-Speed Centrifugal Chiller Performance
14:22 Fixed-Speed Chiller Performance
16:00 Fixed-Speed Compressor Map
21:07 Variable-Speed Centrifugal Chiller Performance
23:26 Variable-Speed Compressor Map
26:17 Centrifugal Performance Comparison (Equivalent Price) Fixed Speed versus Variable Speed
27:37 Fixed Speed / Variable Speed Comparison
29:33 Positive Displacement Compressors Scroll
30:39 Flow versus Pressure Differential
32:29 Slide Valve Unloading
33:26 Part Load Efficiency at Fixed Speed
34:16 Part Load Efficiency with Slide Valve
35:22 Part Load Efficiency with Variable Speed
36:41 Slide Valve versus Variable Speed
37:48 Variable Speed Centrifugal vs. Rotary Centrifugal
41:35 Summary of performance differences The Physics of Operation are Different
42:37 Summary of performance differences Full Load and Part Load Efficiency
45:12 Summary of performance differences Operating Limitations
48:47 Datacenter - Temperate Climate
49:34 High Temperature Datacenter - Cold Climate
50:13 Hotel - Hot and Humid Climate
51:59 Ice Storage Retrofit to Add Capacity #2