Investigation of Tri-Service Heat Distribution Systems (Modernization of Existing Underground Heat Distribution Systems)

摘要

The objective of this research was to evaluate the physical condition of prefabricated steel conduit underground heat distribution systems built in accordance with the Tri-Service Specifications for Underground Heat Distribution Systems (Army, Navy, and Air Force documents CE-301.21, TS-F28g, and Air Force Pamphlet No. 88-007-1, respectively) and to recommend changes to new specifications as necessary. Other types of heat distribution systems were also inspected where convenient. The objectives were met by conducting field surveys at eight Department of Defense (DOD) installations; a total of 66 sites were inspected. The results were compiled and the performance of systems as a function of site classification was assessed. The results of this investigation were; (1) Specific problems with prefabricated steel conduit systems were observed and discussed; (2) Problems with the prefabricated steel conduit systems were attributed to deficiencies in design, construction, and maintenance of the systems; (3) Deficiencies in following established guidance contributed to problems with conduit systems; and (4) A need exists for additional guidance for the design, construction, and maintenance of conduit systems.