Trane TRG-TRC010-EN Quiz

TRG-TRC010-EN 53

Quiz

8) What velocity component is directly proportional to the impeller’s rotational

speed times its diameter?

9) What are the 2 most common devices used to vary the capacity of a

centrifugal compressor?

Questions for Period 4

10)Explain why proper water treatment is important.

Questions for Period 5

11)The refrigerant migration method of free cooling works because refrigerant

migrates from the area of __________ temperature to the area of __________

temperature.

12)What is the purpose of a fouling factor?

trgtrc010_book.book Page 53 Wednesday, September 1, 1999 10:42 AM

Contents

Main BUSINESS REPLY MAIL Page Page Preface A Trane Air Conditioning Clinic Contents Page Introduction Chilled Water System helical-rotary absorption centrifugal Introduction Centrifugal Water Chillers period one period one Centrifugal Water Chiller Compressor Compressor Impeller Centrifugal Compressor Energy Conversion Multistage Compressor notes Condenser Condenser Expansion Device Orifice Plates Economizer Economizer notes Evaporator Evaporator Motor Motor gear-drive direct-drive Hermetic Motor Cooling notes Controls and Starter Controls and Starter Starters unit-mounted remote-mounted p h period two p-h) Pressure-Enthalpy ( liquid vapor Chart Page Page Refrigerants Refrigerant Operating Pressures Page Multistage Compressor Impeller 24 refrigerant. Recall that kinetic energy is converted to static energy, or static pressure. Impeller Dynamics V rotational speed diameter V Compressor Unloading full load part load Surge Compressor Map notes Operating Point 2-Stage Compressor Adjustable-Frequency Drives period four period four Maintenance Considerations ASHRAE Guideline 3 Page Mechanical Components Heat Transfer Surfaces Fluid Analysis notes Oil Analysis period five period five Condensing Temperature Control Condensing Temperature Control Cooling Tower Bypass Constant or Variable Evaporator Water Flow Constant or Variable Flow Limitations Short Evaporator-Water Loops Short Evaporator-Water Loops Heat Recovery Heat Recovery Heat-Recovery Chiller Options Free Cooling Free Cooling Refrigerant Migration Equipment Certification Standards ARI Standard 550/590 ARI Standard 550/590 notes period six ReviewPeriod 1 period six ReviewPeriod 2 impellers inlet vanes ReviewPeriod 3 impellers ReviewPeriod 4 ReviewPeriod 5 Engineers Newsletter Engineered Systems Clinics Quiz Questions for Period 1 1) 2) 3) Quiz Questions for Period 4 Questions for Period 5 Answers Standard for Water Chilling Packages Using the Vapor-Compression Cycle, Page notes 85577_Cover.fm Page 2 Wednesday, September 1, 1999 10:08 AM