Buy Best Building heat load contributions from medium and low voltage switchgear--part I: solid rectangular bus bar heat losses.(Report): An article from: ASHRAE Transactions

Building heat load contributions from medium and low voltage switchgear--part I: solid rectangular bus bar heat losses.(Report): An article from: ASHRAE Transactions by

(6)

This digital document is an article from ASHRAE Transactions, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on July 1, 2009. The length of the article is 7435 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.

From the author: Heat dissipated by medium and low voltage switchgear is determined by use of a spreadsheet model. In the first part of this paper, mathematical models of a switchgear component that produces a significant portion of the total heat loss is examined. Rectangular bus bars are used in switchgear for carrying large current loads and the loss contribution of this one component is significant. The heat loss mechanisms of bus bars consist of eddy current loss, loss from proximity effect, and stray or enclosure loss. Each of these losses is considered in turn to develop a complete model of the bus bar loss process. Where possible, portions of the loss model are compared to information developed elsewhere with excellent agreement. The eddy current and proximity effect loss models are developed in such a way that the model allows evaluation with a spreadsheet. The same can be said for the stray or enclosure loss model. The goal of this work is to produce a switchgear power loss model suitable for use by HVAC engineers for heat load prediction.

Citation Details
Title: Building heat load contributions from medium and low voltage switchgear--part I: solid rectangular bus bar heat losses.(Report)
Author: Warren N. White
Publication:ASHRAE Transactions (Magazine/Journal)
Date: July 1, 2009
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 115 Issue: 2 Page: 369(13)

Article Type: Report

Distributed by Gale, a part of Cengage Learning

Listprice : $9.95  
Now Price: Check Special Offers !!!
See more Details & Compare Prices.

Available at Amazon

FREE with Super Saver Shipping
Usually ships in 24 hours

Compare Prices and Find Best Deals Online

Amazon.com $9.95 (New) Available for download now

### Product Information and Prices Stored : Sep 25, 2011 14:02:09 ###
If this Information is Not Updated, Please Check!!!

High Sierra Drop Bottom Wheeled Duffle Calibration Of Torque Wrenches Rock Rails Fj Cruiser