シュレスタ・ガウラブ

発表年月
発表者
題目・概要
地中熱ヒートポンプシステムにおけるポテンシャルマップの高度化
本研究では従来の地中熱ポテンシャル評価の手法をさらに発展させ、ヒートポ
ンプ性能曲線および熱交換井モデルを用いて、新たな表現でのポテンシャル評
価を行った。ポテンシャル評価には、Shrestha et al. (2015)の広域解析モデルを
2015.12 シュレスタ　ガウラブ、他
用いた。具体的には、GSHPシステムの経済性を評価するため、熱交換量の分布
図に加え、ヒートポンプ性能（COP）の分布の推定を試みた。COPからは、ヒート
ポンプの消費電力や運転コストの予測も可能であり、GSHPシステムの効率的な
利用、適切な設計と経済性の評価に役立つと考えられる。
キーワード
地中熱利用システム
熱交換量
COP
ポテンシャルマップ
津軽平野
掲載紙名等
地熱学会誌
37巻　4号　133頁～141頁
Assessment of development potential of ground-coupled heat pump system in
Tsugaru Plain, Japan
2014.11
Shrestha Gaurav、他
Assessment of potential use of ground-coupled heat pump (GCHP) system in
regional scale is important to promote its growth. Groundwater flow system and
subsurface temperature distribution of Tsugaru Plain were comprehended by
developing 3D numerical model. In absence of measured hydrological and
temperature data, analysis model was verified by constructing single ground heat
exchanger models and incorporating thermal response test results. Prepared
distribution maps of effective thermal conductivity and subsurface temperature
are significant for proper siting of GCHP system. Potential map developed for
space-heating purpose can assist for optimum design and economic feasibility of
the system.
Ground-coupled heat
pump system,
Groundwater flow,
Heat transport,
Ground heat exchanger,
Tsugaru Plain,
Japan
RENEWABLE ENERGY
76号 249頁～257頁
Potential Evaluation of Ground-Source Heat Energy Use in Tsugaru Plain of
Japan
2014.11
Shrestha Gaurav、他
Evaluation of usage potential of ground-source heat energy in regional scale is
necessary to promote its development in Japan. Groundwater flow system and
subsurface temperature distribution of Tsugaru Plain was comprehended by
developing a regional scale analysis model. Based on results of the analysis
model, single ground heat exchanger models were constructed at 11 locations
and heat exchange simulations were conducted. Outputs of the simulations were
utilized to prepare potential maps showing distribution of heat exchange rates
and coefficient of performance of heat pump. Maps prepared for space-heating
purpose are significant for proper site selection of ground-coupled heat pump
system.
ground-source heat
energy,
ground heat exchanger,
heat exchange rate,
COP
Grand Renewable Energy 2014
Proceedings
Temporal Analysis of Water Quality of the Kaname River Basin Using GIS
2011.08
Shrestha Gaurav、他
Water quality of five rivers in the Kaname River Basin was temporally analyzed
and correlated with sewerage system and land use. Water quality of all rivers
improved with time and the improvement was seen as a gradual reduction in the
pollution loads from unsewered population and agricultural land. Temporal
variations in the water quality of each river could be used to characterize them
in terms of expansion of sewerage system and decrease in agricultural land use.
COD and total phosphorus showed good correlation with with pollution load from
unsewered population and agricultural land. Atmospheric nitrogen was presumed
to impact total nitrogen concentration in rivers.
water quality,
unsewered population,
agricultural land,
atmospheric nitrogen,
GIS
Journal of Asian Architecture
and Building Engineering
10巻　2号　469頁～476頁
River Water Quality Analysis of Hadano Basin and its Relationship with Nonpoint
Sources of Pollution
2011.02
Shrestha Gaurav、他
Water quality of six rivers in Hadano Basin was investigated and its relationship
with nonpoint sources of pollution was analyzed. This study was undertaken to
spatially examine the present status of river water quality in the basin.
Groundwater circulation influenced both water quality and quantity. COD, total
phosphorus and total dissolved solids showed good correlation with unsewerd
population and agriculture area. Total nitrogen had good correlation with
atmospheric nitrogen deposition loads. Development of sewerage system could
be decisive factor to maintain river water quality in the Hadano Basin
atmospheric nitrogen,
unsewered population,
water quality,
Hadano Basin
受賞
2013年日本地下水学会春季講演会　若手優秀講演賞（口頭）
Gaurav SHRESTHA 講演番号28　「Development of numerical model for the installation of ground-coupled heat pump system」
Journal of Water and
Environment Technology
9巻　2号　141頁～168頁