This energy conservation workbook series was developed to provide specific data on the effect of various design and operating decisions on both cost and energy consumption. It is designed to make clear the energy consumption and cost implications of various building design and operating decisions in terms that both the layman and design professional can understand. The workbook will be released in three sections -- Energy Conservation and the Building Shell, Mechanical Systems, and Problems of School Lighting and Energy Conservation. The intent of the series is to provide a simple means for determining the consequences of the various possible decision options open to designers and school officials. This section, the first of the series, examines what can be done in designing or redesigning the building's shell to make the wisest long-run use of resources. The text explains how the building shell affects the building's energy consumption, identifies energy conserving ideas for use in the design (or redesign) of the shell, gives examples showing how these ideas could be applied to new construction and modernization projects, provides a simple method for determining the effects of each of these ideas, and identifies sources of further information to assist design professionals in complete analysis of the effect of the building shell on energy consumption. (Photographs may reproduce poorly.) (Author)