Description: Please refer to the section BELOW (and NOT ABOVE) this line for the product details - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Title:Improving The Performance Of A Roof Top Air-Conditioning Unit By Refrigerant Circuitry OptimizationISBN13:9781496033192ISBN10:1496033191Author:Nist (Author)Description:This Study Demonstrates The Performance Improvement Of An Air-To-Air Roof Top Unit (Rtu) Achieved By Optimizing An Evaporator000s Refrigerant Circuitry Using Evolutionary Algorithms The Subject Of This Study Is A Unit With A Cooling Capacity Of 7 5 Tons (26 4 Kw) The Rtu Employs Two Separate Refrigerant Cycles Having Separate Compressors, Condensers, And Thermostatic Expansion Valves (Txv) But Using A Single Evaporator Slab In Which Two Separate Refrigerant Circuits Are Implemented We Modified The Rtu By Replacing The Refrigerant-To-Air Condensers With Water Cooled Brazed Plate Heat Exchangers In Order To Facilitate Testing Performance Tests Were Conducted In A Conditioned Environmental Chamber In Line With Ahri Standard 340360; In Order To Accomplish This, We Maintained The Liquid Line Saturation Pressure And Subcooling From The Manufacturer000s Test Data By Adjusting The Condenser Water Flow Rate And Temperature We Also Measured The In-Situ Air Velocity Profile Using Particle Image Velocimetry (Piv), A Non-Intrusive, Laser-Based Technique The Measurements Showed That The Range Of Air Velocities Passing Through The Heat Exchanger Varied From 0 5 Ms-1 To 3 0 Ms-1, With The Integrated Average Of The Measurements Being 1 75 Ms-1 The Piv Data Was Used To Generate A Map Of The Air Flow Distribution Through The Heat Exchanger, Which Served As The Basis For Refrigerant Circuitry Optimization Binding:Paperback, PaperbackPublisher:CREATESPACEPublication Date:2014-02-24Weight:0.43 lbsDimensions:0.15'' H x 11'' L x 8.5'' WNumber of Pages:74Language:English
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Location: USA
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Book Title: Improving the Performance of a Roof Top Air-Conditioning Unit by Refrigerant Circuitry Optimization
Item Length: 11in.
Item Height: 0.2in.
Item Width: 8.5in.
Author: Nist Staff
Format: Trade Paperback
Language: English
Topic: Energy
Publisher: CreateSpace
Publication Year: 2014
Genre: Science
Item Weight: 8.8 Oz
Number of Pages: 74 Pages
