Effect of Technological Developments on Sheet Metal
Worker Employment and Earnings

Core-Type Buildings

Commercial Complex-Type Buildings

Industrial Plants . .

Power Plant Construction
Other Developments

35

35

39

42

44

45

A NSF/SOLAR ENERGY RESEARCH GRANTS, 1973 AND 1975

99

ILLUSTRATIONS

1

U.S. Energy Production and Consumption, 1947-1973

10

2

Effects of Foreign Oil Price on U.S. Consumption
and Production

11

5

Growth of Annual Production Capacity of Synthetic
High-Btu (Pipeline) Gas . .

11

Thomason Solar Heating System, Using Roof-Mounted,
Single-Glazed Collectors with Open Water Flow

12

Thomason Solar Heating System Specifications

13

The Phoenix House of Colorado Springs . .

65

14

Schematic of Heating Systems for the Phoenix House
of Colorado Springs .

17 Potential for Solar Heating and Cooling of Buildings Capture Potential and Utilization of Solar Heating and Cooling Systems .

18

79

66

4

U.S. Energy Supply, Demand, and Imports in 1985

5

Domestic Fuel Consumption by Source in 1985 . .

6

Congressional Subcommittee Increases for Energy Research
and Development in Fiscal Year 1976 ..

12

13

13

14

15

17

11

Sheet Metal Worker Earnings by Type of Building, 1975 .

34

12

Estimated Market Share of Air Conditioning Systems
for Core-Type Buildings, 1975 and 1985 . .

13

Sheet Metal Cost as a Percentage of HVAC Cost
for Core-Type Buildings

14

Estimated Market Share of Air Conditioning Systems
for Commercial Complex-Type Buildings, 1975 and 1985

22

Investment and Life Cycle Cost for a Single-
Family Residence with 50 Percent Solar Dependency

75