Parameter Grouping and Regionalizing to Simplify Solar Life Cycle Cost Models for Application to Solar Heating and Cooling of Buildings. Final Report

摘要

A generalized life cycle energy and costing assessment process has been developed. The procedure involves a generation of problem scenarios, system alternatives, energy flow, cost items, and cash flows. These culminate in comparative parameters for an assessment which is relevant to the interested parties. Procedures for grouping and regionalizing are developed from a theoretical base. Groups can be excluded for irrelevancy, or combined both from a consistency in parameter variation or for a comparable uncertainty. Uncertainty is a play between the minimum-mode-maximum of parameter ranges and the confidence in their estimation. A solar home water heater case is used to illustrate a life cycle cost matrix. An analysis of variation demonstrates a sensitivity to the natural variation in demand and insolation data which often exceeds those of the system parameters. An extensive appendix expands the analytical models in a consistent manner. A generalized energy flow model is introduced which traces the power, energy and annual energy through the systems. Various factors are proposed as meaningful comparative measures. (ERA citation 03:000507)