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Title: Steam System Balancing and Tuning for Multifamily Residential Buildings in Chicagoland - Second Year of Data Collection

Steam heated buildings often suffer from uneven heating as a result of poor control of the amount of steam entering each radiator. In order to satisfy the heating load to the coldest units, other units are overheated. As a result, some tenants complain of being too hot and open their windows in the middle of winter, while others complain of being too cold and are compelled to use supplemental heat sources. Building on previous research, CNT Energy identified 10 test buildings in Chicago and conducted a study to identify best practices for the methodology, typical costs, and energy savings associated with steam system balancing. A package of common steam balancing measures was assembled and data were collected on the buildings before and after these retrofits were installed to investigate the process, challenges, and the cost effectiveness of improving steam systems through improved venting and control systems. The test buildings that received venting upgrades and new control systems showed 10.2% savings on their natural gas heating load, with a simple payback of 5.1 years. The methodologies for and findings from this study are presented in detail in this report. This report has been updated from a version published in August 2012more » to include natural gas usage information from the 2012 heating season and updated natural gas savings calculations.« less
Authors:
; ;
Publication Date:
OSTI Identifier:
1096686
Report Number(s):
DOE/GO-102013-4238
KNDJ-0-40346-00
DOE Contract Number:
AC36-08GO28308
Resource Type:
Technical Report
Resource Relation:
Related Information: Work performed by Partnership for Advanced Residential Retrofit (PARR), Chicago, Illinois
Research Org:
National Renewable Energy Laboratory (NREL), Golden, CO.
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy Building Technologies Program
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION STEAM SYSTEMS; STEAM BOILERS; STEAM SYSTEM BALANCING; STEAM SYSTEM TUNING; STEAM HEADERS; STEAM RISERS; RADIATOR; RADIATOR VENT; MAIN LINE VENT; MULTIFAMILY BUILDINGS; TENANT COMFORT; TEMPERATURE DISTRIBUTION; RESIDENTIAL; RESIDENTIAL BUILDINGS; PARR; BUILDING AMERICA; Buildings