ComStock Measure Documentation: Variable-Speed Pumps
Kim, Janghyun, CaraDonna, Chris · 2026
Read ComStock Measure Documentation: Variable-Speed Pumps by Kim, Janghyun, CaraDonna, Chris (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/doe-osti-3021527-comstock-measure-documentation-variable.txt.
Description
National Laboratory of the Rockies report NLR/TP-5500-98223, by Janghyun Kim and Chris CaraDonna, documents a ComStock modeling measure for variable-speed pumps in commercial buildings. Constant-speed pumps run flat out and waste energy whenever a building needs only part of its water flow. Variable-speed drives slow the pump to match demand. The document defines the measure's applicability, nominal and part-load efficiency assumptions, and related upgrades elsewhere in the water system.
Modeled across the national building stock, the measure saves 0.43 percent of electricity overall and 1.6 percent in buildings where it applies. Total site energy savings come to 0.23 percent stock-wide and 0.71 percent in applicable buildings, about 11.1 trillion British thermal units a year. Small percentage gains matter here because the measure applies across an enormous fleet of pumps.
Catalog record
| CREATOR | Kim, Janghyun, CaraDonna, Chris |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 73 KB |
| LICENSE | Public Domain |
| RIGHTS | PUBLIC DOMAIN |
| SOURCE | DOE OSTI |