Chapter hvac engineering Fundamentals: Part 1 Introduction

9.4.1
Flooded chillers
A typical flooded shell-and-tube liquid chiller is shown in Fig. 9.9.
Refrigerant flow to the shell is controlled by a high- or low-side float
valve or by a restrictor. The water flow rate through the tubes is de-
fined by the manufacturer but it generally ranges from 6 to 12 ft / s.
Tubes may be plain (bare) or have a finned surface. The two-pass ar-
rangement shown is most common, although one to four passes are
available. The chiller must be arranged with removable water boxes
so that the tubes may be cleaned at regular intervals, because even a
Equipment: Part 1
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com)
Copyright © 2004 The McGraw-Hill Companies. All rights reserved.
Any use is subject to the Terms of Use as given at the website.

---