Kings Beach Recreation and Visitors Center Solar-Assisted Space-Heating System. Final Technical Report.

摘要

This document represents the final design report for a low temperature solar space heating system installed at the Kings Beach Recreation and Visitors Center in Kings Beach, California. The solar eating system features a 1665 sq. ft. (net) (154.7 m exp 2 ) array of single-glazed selective surface flat plate collectors manufactured by Sunworks, Inc., of New Haven, Connecticut. The array heats an ethylene-glycol/water mixture and delivers energy to a 3000 gallon ambient pressure treated water storage vessel. Heat is delivered to the building load through conventional air handlers and pumped fluid distribution. Preheating of domestic hot water for the facility restrooms was abandoned during the design phase as uneconomical due to the remoteness and small size of these loads (handwashing primarily). Section 2 of this report describes the solar system design, the controls approach, and conventional system interface. The building retrofit is described in Section 3. An acceptance test plan is presented in Section 4 along with the startup results. Section 5 discusses the problems encountered during the design and construction phases. This section also presents the resolutions to those problems and the author's recommendations for design approaches which may alleviate some of the typical retrofit problems encountered in this project. The appendices include the following: predicted performance data; project verification statements; installation photographs; as-built drawings; and operation and maintenance documents. Reference CAPE-2824. (ERA citation 08:035528)