Geothermal heat pump system assisted by geothermal hot spring
The authors propose a hybrid geothermal heat pump system that could cool buildings in summer and melt snow on the pedestrian sidewalks in winter, utilizing cold mine water and hot spring water. In the proposed system, mine water would be used as cold thermal energy storage, and the heat from the hot...
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doaj-44f4e3e251474f98b5bc5037fe74153a2020-11-25T02:02:55ZengCopernicus PublicationsGeothermal Energy Science2195-47712195-478X2016-01-014111010.5194/gtes-4-1-2016Geothermal heat pump system assisted by geothermal hot springM. Nakagawa0Y. Koizumi1Colorado School of Mines, Golden, Colorado, USAColorado School of Mines, Golden, Colorado, USAThe authors propose a hybrid geothermal heat pump system that could cool buildings in summer and melt snow on the pedestrian sidewalks in winter, utilizing cold mine water and hot spring water. In the proposed system, mine water would be used as cold thermal energy storage, and the heat from the hot spring after its commercial use would be used to melt snow for a certain section of sidewalks. Neither of these sources is viable for direct use application of geothermal resources, however, they become contributing energy factors without producing any greenhouse gases. To assess the feasibility of the proposed system, a series of temperature measurements in the Edgar Mine (Colorado School of Mines' experimental mine) in Idaho Springs, Colorado, were first conducted, and heat/mass transfer analyses of geothermal hot spring water was carried out. The result of the temperature measurements proved that the temperature of Edgar Mine would be low enough to store cold groundwater for use in summer. The heat loss of the hot spring water during its transportation was also calculated, and the heat requirement for snow melt was compared with the heat available from the hot spring water. It was concluded that the heat supply in the proposed usage of hot spring water was insufficient to melt the snow for the entire area that was initially proposed. This feasibility study should serve as an example of "local consumption of locally available energy". If communities start harnessing economically viable local energy in a responsible manner, there will be a foundation upon which to build a sustainable community.http://www.geoth-energ-sci.net/4/1/2016/gtes-4-1-2016.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
M. Nakagawa Y. Koizumi |
spellingShingle |
M. Nakagawa Y. Koizumi Geothermal heat pump system assisted by geothermal hot spring Geothermal Energy Science |
author_facet |
M. Nakagawa Y. Koizumi |
author_sort |
M. Nakagawa |
title |
Geothermal heat pump system assisted by geothermal hot spring |
title_short |
Geothermal heat pump system assisted by geothermal hot spring |
title_full |
Geothermal heat pump system assisted by geothermal hot spring |
title_fullStr |
Geothermal heat pump system assisted by geothermal hot spring |
title_full_unstemmed |
Geothermal heat pump system assisted by geothermal hot spring |
title_sort |
geothermal heat pump system assisted by geothermal hot spring |
publisher |
Copernicus Publications |
series |
Geothermal Energy Science |
issn |
2195-4771 2195-478X |
publishDate |
2016-01-01 |
description |
The authors propose a hybrid geothermal heat pump system that could cool
buildings in summer and melt snow on the pedestrian sidewalks in winter,
utilizing cold mine water and hot spring water. In the proposed system, mine
water would be used as cold thermal energy storage, and the heat from the
hot spring after its commercial use would be used to melt snow for a certain
section of sidewalks. Neither of these sources is viable for direct use
application of geothermal resources, however, they become contributing
energy factors without producing any greenhouse gases. To assess the
feasibility of the proposed system, a series of temperature measurements in
the Edgar Mine (Colorado School of Mines' experimental mine) in Idaho
Springs, Colorado, were first conducted, and heat/mass transfer analyses of
geothermal hot spring water was carried out. The result of the temperature
measurements proved that the temperature of Edgar Mine would be low enough
to store cold groundwater for use in summer. The heat loss of the hot spring
water during its transportation was also calculated, and the heat
requirement for snow melt was compared with the heat available from the hot
spring water. It was concluded that the heat supply in the proposed usage of
hot spring water was insufficient to melt the snow for the entire area that
was initially proposed. This feasibility study should serve as an example of
"local consumption of locally available energy". If communities start
harnessing economically viable local energy in a responsible manner, there
will be a foundation upon which to build a sustainable community. |
url |
http://www.geoth-energ-sci.net/4/1/2016/gtes-4-1-2016.pdf |
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AT mnakagawa geothermalheatpumpsystemassistedbygeothermalhotspring AT ykoizumi geothermalheatpumpsystemassistedbygeothermalhotspring |
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