GEO-HEAT CENTER QUARTERLY BULLETIN

THE ROLE OF GEOTHERMAL ENERGY IN THE WORLD

Ingvar B. Fridleifsson

Unitied Nations University

Geothermal Training Programme

DIRECT HEAT UTILIZATION OF GEOTHERMAL RESOURCES

John W. Lund

Geo-Heat Center

SELECTED COST CONSIDERATIONS FOR GEOTHERMAL DISTRICT HEATING IN EXISTING SINGLE-FAMILY RESIDENTIAL AREAS

Kevin Rafferty

Geo-Heat Center

KLAMATH FALLS GEOTHERMAL DISTRICT HEATING SYSTEM EVALUATION

Brian Brown, P.E.

Mechanical Engineer

OIT GEOTHERMAL SYSTEM IMPROVEMENTS

Paul J. Lienau

Geo-Heat Center

GEOTHERMAL PIPELINE

Progress and Development Update from the Geothermal Progress Monitor

Cover:

The U. S. Government Projects and Resource map identifies 23 operating geothermal power plants with a capacity of 2,817 MW and 15 planned power plants. The installed thermal power for direct use is 1,874 MW including geothermal heat humps (59%), and the following number of direct-use project sites: 17 district heating, 976 space heating, 38 greenhouses, 28 aquaculture, 12 industrial, and 190 resorts/spas. In many cases, the icons on the map represent multiple projects at individual sites. For example in Klamath Falls, there are 577 space heating projects and two district heating systems.

PUBLISHED BY

All articles for the Bulletin are solicited. If you wish to contribute a paper, please contact the editors at the above address.

EDITORS

Paul J. Lienau and John W. Lund

Typesetting and Layout - Donna Gibson

FUNDING

The Bulletin is provided compliments of the Geo-Heat Center. This material was prepared with the support of the U.S. Department of Energy (DOE Grant No. DE-FG07-90ID 13040). However any opinions, findings, conclusions, or recommendations expressed herein are those of the authors(s) and do not necessarily reflect the view of DOE.