-
Katsunori NAGANO, Atsushi TSUCHIYA, Takao KATSURA, Sayaka TAKEDA, Taka ...
Article type: Article
Session ID: H-11
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The heat extraction test with residential steel foundation piles was carried out. As a result of the test, total heating output was 26.6GJ for 1222hours, the value satisfied the heating load of the residential house in cold region. Using a performance prediction tool, it was demonstrated that calculated ground temperature variations could reproduce ones of the actual measurement.
View full abstract
-
Katsunori NAGANO, Takafumi NOGAWA, Takao KATSURA, Sayaka TAKEDA, Kazum ...
Article type: Article
Session ID: H-12
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Utilization of ground thermal energy is proposed as one of the effective solution in energy saving for snow melting on pavement. We developed the computer simulation tool for design and performance prediction, and made compact thermal response tester. Effective thermal conductivity was estimated 1.40W/(m・K) from the result of thermal response test which was performed in Sapporo. As a result of Simulation, Calculated annual primary energy consumption of snow melting system using ground thermal energy was reduced about 34% compared to conventional system using boiler. Underground Thermal Energy Storage is not effective to reduce primary energy consumption compared to the system without UTES.
View full abstract
-
Kazuhiro NAKAZAWA, Gyu-young YOON, Hideharu NIWA, Masaya OKUMIYA, Koic ...
Article type: Article
Session ID: H-13
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
This study deals with the performance of Geo-Heat pump system which utilizes the underground soil as the heat sink or heat source. Geo-Heat pump system is composed of heat pump and earth pipe heat exchangers. And, the performance of earth pipe heat exchanger and heat pump influences each other. So, it is necessary that the consideration of both. Therefore, in this paper, the simulation of Geo-heat pump system was conducted with considering the performance of heat pump and earth pipe heat exchanger in order to introduce the system into a building in Osaka.
View full abstract
-
Takeshi MIYAMA, Eitaro KAWAURA, Shigeaki NARITA
Article type: Article
Session ID: H-14
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We developed Ground Heat Exchange System by effectively utilizing temporary installed Diaphragm Wall as a ground heat exchanger. Combined with the ground-source heat pump, we used the system in the snow-melting on-site test. The purpose of this test was to verify the snow-melting condition of road surface and the heat collecting performance of ground heat exchanger of two different types through the winter season. From the test result, it is evaluated that the system can provide the road surface of good condition for pedestrians and it functions effectively as a countermeasure towards the snow damage in winter.
View full abstract
-
Hisashi HANZAWA, Kazuoki SHIOTSU, Kazuo SHIBATA, Atsushi HIROMATSU
Article type: Article
Session ID: H-15
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The ground source heat pump system has been applied to the commercial green house growing fuits in Hokkaido. The heat exchangers are eight bore holes installed single U-tube and 90m depth. During winter, the heat pump system was used for snow melting and heating soil in the house. Performance of the system in winter has been measured.
View full abstract
-
Jun OOWADA, Kiyofumi OOHASHI
Article type: Article
Session ID: H-16
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The field measurement results of a ventilation system with cool and heat pit for two years, and the case study results by simulation are described. The ventilation system was function at most time. However, when outdoor air temperature was around 24℃, useless operation of several hours was performed. The acquired quantity of heat from the cool and heat pit will be 6.2GJ(heating), 4.8GJ(cooling) in the 2003 fiscal year, and 7.2GJ(heating), 5.7GJ(cooling) in the 2004 fiscal year. The results of the simulation was corresponding to measurement results in general.
View full abstract
-
Kentaro SEKINE, Ryozo OOKA, Mutsumi YOKOI, Yoshiro SHIBA, Suckho HWANG
Article type: Article
Session ID: H-17
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
This paper presents a feasibility study on an annual experiment and the real construction cost. The feasibility study model was the office building of medium scale. The cost pay back time was 17.7 years depending on cost increase of ground heat exchanger pile. Furthermore, the authors tried to find some factors that have the cost pay back time within 10 years. Consequently, it expects that the cost pay back time reduces by executing some factors.
View full abstract
-
Yoshiro SHIBA, Ryuzo OOKA, Kentaro SEKINE
Article type: Article
Session ID: H-18
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
High performance water-to-water heat pump for ground source application was developed by using a plate heat exchanger, a new type of compressor and refrigerant cycle with a liquid-gas heat exchanger. First, the performance design program to compute the refrigerant cycle with a liquid-gas heat exchanger was created. The simulating program could predict heating/cooling capacity, electric power and COP by deciding surface area of heat exchangers, compressor efficiency, compressor displacement, etc. Secondly, the real heat pump was designed according to the result of the program and created and tested on performance to compare with the simulation.
View full abstract
-
SuckHo HWANG, Ryozo OOKA, Kentaro SEKINE
Article type: Article
Session ID: H-19
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The purpose of this research is to develop the high precision numerical model for simulating performance of ground heat exchanger. In this paper, we proposed a new simulation method which can compute subterranean heat and groundwater transfer and heat extraction rate of geothermal heat exchanger at the same time. And we present result of numerical simulation on thermal performance of U-tube ground heat exchanger.
View full abstract
-
Yujin NAM, Ryozo OOKA, SuckHo HWANG, Kentaro SEKINE, Yosuke Shimawaki
Article type: Article
Session ID: H-20
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
To purpose of this research is to develop the numerical model for simulating performance of ground heat exchanger with high prediction accuracy. This paper presents result of the comparison analysis between numerical simulation and field experiment in 2004. Sensitive analysis is conducted in order to acquire the influence of various soil properties on thermal performance of U-tube ground heat exchanger.
View full abstract
-
Takuya ICHIKAWA, Shin-ichi TANABE, Michiro SHIMAZU, Satoshi WATANABE, ...
Article type: Article
Session ID: I-1
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Many buildings with various energy saving technologies are currently introduced due to global environmental concerns. The new Waseda Research Park Communication Center is equipped with building control system with a Life Cycle Management (LCM) unit. This LCM unit monitors the actual effect of energy saving technologies of the building, enabling rational and optimal operation and maintenance. This report provides an outline of the facility and its energy consumption configuration.
View full abstract
-
Shin-ichi TANABE, Eisuke TOGASHI, Shinsuke WATANABE, Takuya ICHIKAWA, ...
Article type: Article
Session ID: I-2
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Demand for electric power in private sector is increasing year by year in Japan. Especially during summer season, a high demand for electricity exists due to cooling load. Since an excess of capacity reduces the efficiency, load leveling is needed. Natrium-Sulfur energy storage system (NaS) is a new technology that provides load leveling. In this study actual operation performance was reported. Efficiency of NaS system was 73% including PCS. Other performance at Waseda Research Park Communication Center were also mentioned here.
View full abstract
-
Eisuke TOGASHI, Shin-ichi TANABE, Shinsuke WATANABE, Shin-ichi TAKAHAS ...
Article type: Article
Session ID: I-3
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Lately, open networking technology in building environment and energy management system have been developed. The standard protocols such as BACnet, LonTalk and IPv6 are used for these systems. It allows obtaining various operation data of apparatus than before. With the advancement of computerization, this data accumulation has not only instigated in the field of construction but also in other fields. In order to utilize these data, soft computing methods such as Neural Network, Fuzzy theory and Genetic Algorithm have been applied recently. In this research, we proposed a new method of developing a dynamic simulation model for commissioning by using a Recurrent Neural Network and data from building environment and energy management system network.
View full abstract
-
Shin-ichi TANABE, Shinichi TAKAHASHI, Shinsuke WATANABE, Masakazu SHIM ...
Article type: Article
Session ID: I-4
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
This research is to establish Life Cycle Management System for building with information gathering using open network. In this paper, it was proven to be able to add a new system above the existing building control network system without the influence.Moreover, an air handling unit (AHU) system at a lecture room was evaluated by the measurement. It is scheduled to advance the verification under different load conditions.
View full abstract
-
Hidetoshi Ishikuro, Yukihiro Kawazu, Noriyoshi Yokoo, Masaaki Satou, Y ...
Article type: Article
Session ID: I-5
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
This paper introduces GBToo12005, assessment tool made in Canada, and aims to clarify the characteristics of CASBEE and GBTool 2005 by comparing with their assessment items and weight.
View full abstract
-
Yukihiro KAWAZU, Noriyoshi YOKOO, Tatsuo OKA
Article type: Article
Session ID: I-6
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
In this study, the changes of energy and CO_2 emission intensity on the field of architecture from 1985 to 2000 are derived from input-output table in Japan. In addition, The Gross Domestic Product and material consumption are calculated. In the results, the energy and CO2 emission intensity of 1985 and 2000 are similar trend and Gross Domestic Product on the field of architecture decrease by 200,000 yen from 1985 to 2000.
View full abstract
-
Takashi AKIMOTO, Masaaki SATO, Shogo MURAKAMI, Michiya SUZUKI, Yuya KI ...
Article type: Article
Session ID: I-7
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We forecasted that the amount of CO_2 emissions relating to the operation of business buildings in Japan for four different scenarios. The four scenarios were that: (1) no measures were taken, (2) took measures aimed for the Kyoto Protocol, (3) the assumption that energy conservation of equipment was accelerated, and (4) the assumption that energy saving was canceled by lifestyle changes, etc. Simulation found that it was so hard to achieve the Kyoto Protocol without any innovative development of HVAC system in a few years. It was also necessary that users had to make an effort not to go backward against energy conservation.
View full abstract
-
Satoshi MIYAMICHI, Hitoshi TAKEDA
Article type: Article
Session ID: I-8
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Among characteristics of photocatalysts is hydrophilic property. Taking advantage of this feature, the authors have installed an evaporation cooling system in an experimental building (165 square meters in total floorage) for verification. Under this system, the exterior walls of the building are coated with photocatalysts (titanium oxide) and water is sprinkled over the walls. Tests show that water sprinkling on the outer walls has reduced their surface temperature by five to ten degrees centigrade and the room temperature by one to two degrees.
View full abstract
-
Hiroshi OOMORI, Hirohisa AKIYAMA, Tomoko NOMOTO, Masaya OKUMIYA
Article type: Article
Session ID: I-9
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
In recent years, a thin coating film, which is applied to the windowpane for reducing the solar heat gain and improving the indoor environment, was developed. In this study, the effect of the coating on the indoor environment was examined through the field measurements. Also the simulation analyzed effect of coating film on the cooling/heating load. As results, the coating film can improve indoor environment. On the matter of energy conservation, the film can reduce cooling load while increase heating load. The film can reduce annual load of the building of which cooling load is dominants (for example office building).
View full abstract
-
Yoshio MASUKAWA, Takashi AKIMOTO, Shigeyuki MATSUOKA
Article type: Article
Session ID: I-10
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
It is important to save invisible energy of buildings to prevent global warming. We investigated the actual energy consumption of electric toilet seats as one example of invisible energy consumption in a building. In this building, electric toilet seats are not used in the power saving mode, and it is possible to save energy by 37% using in the power saving mode.
View full abstract
-
Koji SAWADA
Article type: Article
Session ID: I-11
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We investigated into the Energy Consumption of the High Schools ofAomori Pref. for past five years (1999〜2003). The total Energy Consumption of the High schools of Aomori Pre」 varied in proportion to the temperatures of winter of the years, but there was no change in the general situation. Consumption of the Heating Energy of the Areas varied in proportion to the Duration of Sunshine more than the temperatures of the Areas.
View full abstract
-
Shinobu TSUCHIKAWA, Hideki TANAKA, Masaya OKUMIYA
Article type: Article
Session ID: I-12
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Global warming is progressing with increase of CO_2 emissions in recent years, and the consciousness to energy saving has also been increasing. Especially CO_2 emission from construction-related sectors was estimated to occupy about one third of the whole, and energy saving in a building has been an important subject. Under such a background, for the public-offices building of various uses, the investigations into the actual conditions of energy use were conducted and the remedy is proposed in this study. In this paper, the system performance and the indoor environment were investigated and reported.
View full abstract
-
Yukie KITADANI, Hirotaka SUZUKI, Tsukasa TSUKIDATE, Sayaka MURATA
Article type: Article
Session ID: I-13
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
In the building of 'Hokkaido northern regional building research institute', some methods are combined for control of indoor thermal environment in summer. The methods are followings. 1:Air cooling used Ice made by cold open air in winter.and snow. 2:Sun shade. 3:Natural draft in daytime. 4:Night purge-ventilation at nighttime. And permissible indoor thermal environment is realized with small energy consumption(17[MJ/m^2・a]), in this building.
View full abstract
-
Wakako Sugimori, Shinji Yoshida, Ryozo Ooka
Article type: Article
Session ID: I-14
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
In this paper, we evaluate the energy saving performance of environmental symbiotic office building in Fukui-city using field observation. In this building, photovoltaic power system, rainwater reusing system, natural ventilation system, and geothermal air conditioning system are introduced. In the former part of this paper, we evaluate the energy and resource saving performances of these systems. In the latter part of this paper, CEC/AC is calculated using the annual result of field observation in order to evaluate the energy saving performance for air conditioning. By these investigations, it is clarified that this building has high performance for environmental modification.
View full abstract
-
Junichi WAKAMATSU, Takashi YANAI
Article type: Article
Session ID: I-15
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
It is important to reduce building energy consumption continuously in operation phase, and an accurate measurement system is necessary to know for an energy consumption reduction method, whether to be effective. However it is usually difficult to introduce such as measuring system into the existing buildings. In this report, as well as the former report, we propose that using monthly building measured data, we statistically estimate standard energy consumption value and compare to measured energy consumption value. We reported these summary and result.
View full abstract
-
Shigeyuki MATSUOKA, Yoshio MASUKAWA, Norio KUZUOKA
Article type: Article
Session ID: I-16
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We think that it is important to grasp energy consumption of building, the actual situation of the building, temperature of the air outside and more for energy management and energy conservation. This report is about result of cool-heat demand and electric power demand, which was continued to accumulate of long term in a building.
View full abstract
-
Takamasa SHINKAWA, Tomotaka MANO, Yoshimi TAKEUCHI, Naoki OSAKABE, Jyu ...
Article type: Article
Session ID: I-17
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The purpose of this study is to investigate the working situation, the thermal environment and the characteristic of energy consumption in the renovated building. In this study the effects on saving energy ware evaluated, and it was clarified the amount of energy consumption was reduced in this building. In addition, the working situations and electrical demand of the typical floor in this building ware verified.
View full abstract
-
Toshihiro NAGAMORI, Tomoaki MIYAZAKI, Makoto USUGI
Article type: Article
Session ID: I-18
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We have achieved about 686.1〜774.5 MJm^2 y(163.9〜182.4 Mcal/m^2y) of primary energy equivalent value according attempt energy conservation with the pursuit of comfort in a medium scale office building. In this paper we will report the results of comparing and analyzing amounts of energy consumption for the last 10 years , with an examination of system operation & thermal environment for energy.
View full abstract
-
Article type: Appendix
Pages
App1-
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
