Page 48 - Sustainable On-Site CHP Systems Design, Construction, and Operations

Applicability of CHP Systems 27

(2004) clearly suggests that secondary (high) schools (from 9 through 12 grades) are
more suitable for BCHP than primary (or K-8) schools for the following reasons:
1. Secondary schools are more likely to operate 12 months a year.
2. Secondary schools are more likely to contain an indoor swimming pool facility.
3. Secondary schools are more likely to operate into the evenings and weekends
allowing longer period of BCHP operation.
4. Secondary schools typically contain gymnasiums with shower facilities.

It should be noted that the “office buildings” category specified in this study refers
2
to office buildings with total area greater than 25,000 ft .
This information along with previous experience (existing installations) can be used
as a starting point to identify sectors which are most appropriate for BCHP.

Climatic Regions
The selection of favorable climatic regions for BCHP has been handled in a manner
similar to that of the building/sector. Onsite (2000) provides detailed information on
geographic locations (states) of existing BCHP installations and also for potential/
future installations. According to the study, 50 percent of potential BCHP installations
have been identified in nine states: California, Illinois, Florida, Michigan, New Jersey,
New York, Ohio, Pennsylvania, and Texas. Table 2-6 shows these states and the corre-
sponding climatic zones.
ANSI/ASHRAE/IESNA Standard 90.1-2007, normative Appendix B (based on Briggs
et al. 2003b) can be used to characterize the climate characteristics of these states. This
standard correlates location to climatic region, by defining three major types of climatic
types: moist (A), dry (B), and marine (C), in addition, the standard uses eight zone
numbers starting from 1 (which is very hot region) and ends with 8 (which represents
subarctic). For international locations the ANSI/ASHRAE/IESNA Standard 90.1-2007,
normative Appendix B, Section B.2 can be used.

No. State Climatic Region Zone Definition
1 CA Mainly 3B Warm-dry
NY Mainly 5A Cool-humid
PA Mainly 5A Cool-humid
2 MI Mainly 5A Cool-humid
OH Mainly 5A Cool-humid
IL Mainly 5A Cool-humid
3 NJ Mainly 4A Mixed-humid
4 FL Mainly 2A Hot-humid
5 TX Mainly 3A Warm-humid

TABLE 2-6 Geographic Locations of 50 Percent of Potential/Future
BCHP Installations