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Title: Fossil fuel-fired peak heating for geothermal greenhouses

Abstract

This report examines the capital and operating costs for fossil fuel-fired peak heating systems in geothermally (direct use) heated greenhouses. Issues covered include equipment capital costs, fuel requirements, maintenance and operating costs, system control and integration into conventional hot water greenhouse heating systems. Annual costs per square foot of greenhouse floor area are developed for three climates: Helena, MT; Klamath Falls, OR and San Bernardino, CA, for both boiler and individual unit heater peaking systems. In most applications, peaking systems sized for 60% of the peak load are able to satisfy over 95% of the annual heating requirements and cost less than $0.15 per square foot per year to operate. The propane-fired boiler system has the least cost of operation in all but Helena, MT climate.

Authors:
Publication Date:
Research Org.:
Oregon Inst. of Tech., Klamath Falls, OR (United States). Geo-Heat Center
Sponsoring Org.:
USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
OSTI Identifier:
469108
Report Number(s):
DOE/ID/13040-T38
ON: DE97004949; TRN: 97:002951
DOE Contract Number:  
FG07-90ID13040
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Dec 1996
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; GREENHOUSES; AUXILIARY HEATING; CAPITALIZED COST; OPERATING COST; GEOTHERMAL HEATING SYSTEMS; FOSSIL FUELS; Geothermal Legacy

Citation Formats

Rafferty, K. Fossil fuel-fired peak heating for geothermal greenhouses. United States: N. p., 1996. Web. doi:10.2172/469108.
Rafferty, K. Fossil fuel-fired peak heating for geothermal greenhouses. United States. https://doi.org/10.2172/469108
Rafferty, K. 1996. "Fossil fuel-fired peak heating for geothermal greenhouses". United States. https://doi.org/10.2172/469108. https://www.osti.gov/servlets/purl/469108.
@article{osti_469108,
title = {Fossil fuel-fired peak heating for geothermal greenhouses},
author = {Rafferty, K},
abstractNote = {This report examines the capital and operating costs for fossil fuel-fired peak heating systems in geothermally (direct use) heated greenhouses. Issues covered include equipment capital costs, fuel requirements, maintenance and operating costs, system control and integration into conventional hot water greenhouse heating systems. Annual costs per square foot of greenhouse floor area are developed for three climates: Helena, MT; Klamath Falls, OR and San Bernardino, CA, for both boiler and individual unit heater peaking systems. In most applications, peaking systems sized for 60% of the peak load are able to satisfy over 95% of the annual heating requirements and cost less than $0.15 per square foot per year to operate. The propane-fired boiler system has the least cost of operation in all but Helena, MT climate.},
doi = {10.2172/469108},
url = {https://www.osti.gov/biblio/469108}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 01 00:00:00 EST 1996},
month = {Sun Dec 01 00:00:00 EST 1996}
}