Chapter hvac engineering Fundamentals: Part 1 Introduction

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Chapter Seven
Figure 7.2
Elementary heating water system diagram.
Figure 7.3
Central heating plant, multiple boilers / common pumps.
each for 60 percent of the peak load, to allow one boiler to keep the
system ‘‘alive’’ if the other boiler fails. For a three- or four-boiler or
more system, boilers are usually sized so that the entire load can be
carried even if the largest boiler fails. There is usually a smaller boiler
sized to the summer load. Care must be taken not to underestimate
Design Procedures: Part 5
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