cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18462/iir.icr.2015.0732
title: High-temperature cooling & low-temperature heating AC system evaluation of energy saving in an office in Tokyo.

description: While the efficiency of water piping central AC systems has improved greatly, improving in the efficiency of the overall system had been a problem that needed to be solved. The High-Temperature Cooling & Low-Temperature Heating AC System (WATER EXCEL) centers on using a medium temp. refrigerant, having a large temp. difference between the inlet/outlet of a heat-exchanger, having low temp. air-blow, adjusting control of OA/RA volume at the chamber room and ensuring a radiant and laminar flow. A new specification has been established “10;10;13”. We took measurements in an office building in Tokyo for one year to evaluate the energy-saving properties and comfort of this system. New specification “(1)10;(2)10;(3)13” refers to reference temperatures for an energy transfer medium. (1) Cold water temperature is 10°C (improved heat source efficiency by shifting from the conventional 7°C to 10°C toward middle temperature). (2) Coil doorway difference of temperature is 10K. (reduction in pump power by having a larger temperature difference from 5K to 10K and water volume reduction). (3) Cooling air supply temperature is 13°C (reduction in blowing power by reducing air volume from the conventional 16°C)
DOI: 10.18462/iir.icr.2015.0790
title: New type of energy efficient heat exchanger for indirectly cooled display cabinets.

description: In this study, a completely new type of air-to-liquid heat exchanger, adapted for obtaining good heat transfer performance even at a laminar flow regime on the liquid side has been evaluated in a display cabinet application. The heat exchanger consists of parallel plates, with liquid in every second passage and air in the other passages. Tests were performed with a traditional open vertical display cabinet, first with a traditional finned-tube coil and thereafter with the new type of heat exchanger placed in the bottom of the display cabinet. The results showed that the same cooling capacity and mean temperature of the “food packages” could be obtained with around 6 K higher inlet temperature of the liquid, -7°C with the traditional coil and -1°C with the new type of heat exchanger, which can lead to considerable energy savings.
DOI: 10.7483/opendata.alice.cgqj.juzf
title: Proton-Proton data sample at 3.5 TeV from run number 120616

description: Proton-Proton ESD data sample at 3.5 TeV from RunC of 2010. Run period from run number 120616.
DOI: 10.7483/opendata.alice.n4tx.jmr4
title: Proton-Proton data sample at 3.5 TeV from run number 120505

description: Proton-Proton ESD data sample at 3.5 TeV from RunC of 2010. Run period from run number 120505.
DOI: 10.7483/opendata.alice.2wgh.vzjs
title: Proton-Proton data sample at 3.5 TeV from run number 120822

description: Proton-Proton ESD data sample at 3.5 TeV from RunC of 2010. Run period from run number 120822.
DOI: 10.7483/opendata.alice.p9mp.4ezj
title: Proton-Proton data sample at 3.5 TeV from run number 120824

description: Proton-Proton ESD data sample at 3.5 TeV from RunC of 2010. Run period from run number 120824.
DOI: 10.18462/iir.icr.2015.0792
title: A new equation of state for 1,1,1,3,3-pentafluoropropane (R-245fa).

description: A new fundamental equation of state explicit in the Helmholtz energy is presented for 1,1,1,3,3-pentafluoropropane (R-245fa). The functional form uses Gaussian bell-shaped terms, according to recent trends in the development of accurate equations of state. The equation is valid for temperatures between the triple point (170.0 K) and 440 K, and for pressures up to 200 MPa. Estimated uncertainties in this range are 0.1 % for vapor pressures, 0.1 % for saturated liquid densities, 0.1 % for liquid densities below 70 MPa, 0.2 % for densities at higher pressures, 0.3 % for vapor densities, 0.3 % for liquid sound speeds, and 0.1 % for vapor sound speeds. The uncertainties in the critical region are higher for all properties except vapor pressures. The equation shows reasonable extrapolation behavior at extremely low and high temperatures, and at high pressures.
DOI: 10.18462/iir.icr.2015.0796
title: A study on the environmental performance into standard system of elementary school building by wood-frame construction method-outline of model plan and field measurements of thermal environment in winter.

description: This study is concerned with a standard design of an elementary school by a wood-frame construction method. The purpose of this study is to adopt environmental adjustment techniques such as the use of indoor lighting and a thermal environment in the elementary school setting. In the model plan, a dual-layer wall arranged on the outer-wall side with the structural strength necessary to support a three-story school building was devised with a buffer space between the walls. In this report, for an environmental performance inspection of the buffer space, the authors utilized an experimental building to perform actual indoor thermal measurements during the winter season. The results were as follows: due to the warm air ballooning from the outer periphery of the experimental room's floor surface into the buffer space, both the floor and walls had a higher surface temperature. Compared to the inside of a room without such a buffer space, the area close to the outlet of the double-layered floor showed a temperature difference of 12°C. Furthermore, there was a 2 to 5°C difference in the lower temperature areas of the respective walls. This experiment elucidated the environmental performance gained throughout the inside of the experimental room by the establishment of a buffer space.
DOI: 10.18462/iir.icr.2015.0797
title: Heat transfer characteristics of plate absorber for compression/absorption hybrid heat pump application.

description: In recent years, large amount of low-temperature waste heat exists in industrial sectors. Heat pump system can be used to utilize the low-temperature waste heat. The heat pump system in this research is based on the hybrid combination of compression and absorption systems in order to recover various kinds of industrial waste heat effectively. The absorber is a major component in the compression/absorption hybrid systems and its performance greatly affects the overall system performance. The objective of this paper is to analyze the heat transfer characteristics for ammonia-water absorption process within plate heat exchangers which can be used as an absorber in the hybrid heat pump systems. The absorber is an important component in the hybrid heat pump systems, and its performance affects the system performance significantly. Parametric analysis is carried out experimentally in the absorption process of the bubble type absorber. This study investigates the effects of the absorber internal pressure change and the plate absorber geometric conditions on the absorber capacity and COP. From the present experimental study, it is found that the maximum hot water temperature can be made as high as 80°C.
DOI: 10.18462/iir.icr.2015.0801
title: Inlet-air cooling system with centrifugal-chiller module.

description: Mitsubishi Heavy Industries, Ltd. (MHI) has developed an inlet-air cooling system in which large-scale and highly efficient centrifugal-chiller modules are applied to gas turbine combined-cycle (GTCC) power plants. In a gas turbine, the output power decreases as the temperature of inlet air increases. Our new inlet-air cooling system contains a cooling-coil module and a chiller module. In the chiller module, centrifugal chillers, cooling towers, water supply pumps, an electric power unit, a transformer, and a control unit, are packaged as a single unit. An Ene-Conductor “EC series” control unit was adopted as the main controller for the system. This newly developed inlet-air cooling system significantly increased power output of a GTCC power plant. The system is installed at a GTCC plant in Thailand and started commercial operations in 2012.
DOI: 10.18462/iir.icr.2015.0802
title: Experimental research on viscosity of Al2O3-H2O nanofluids.

description: Viscosity of Al2O3-H2O nanofluids under different temperatures, concentrations and particle sizes is studied in this paper. A digital viscosimeter is used to measure the viscosity of four kinds of particle sizes (10 nm, 20 nm, 50 nm, 100 nm), five different volume fractions (0.25%, 1%, 1.5%, 2%, 2.5%) of nanofluids with the temperature ranging from 18°C to 40°C. And we calculated the relative viscosity of the nanofluids and its base fluid (deionized water). The result suggests that the viscosity of Al2O3-H2O nanofluids decreses with the increase of temperature, while the relative viscosity increases with the increase of volume fraction, and there exists a critical value of the volume fraction of 1.5% relating to the increasing rate of relative viscosity. It is also found that the smaller the particle size, the greater the influence of nanoparticles on the base fluid viscosity, namely the smaller nanopaticles have more obvious effect on base fluids’ viscosity. Our experimental viscosity values are in high agreement with the calculation value of Khanafer ‘s model at the volume fraction of 1%. But with the increase of volume fraction, the difference gets bigger between them. This may be associated with the different preparation methods of nanofluids. In addition, unknown surfactants in nanofluids have unknown effect on its viscosity.
DOI: 10.18462/iir.icr.2015.0804
title: Effect of concentration of falling film absorption heat and mass transfer of LiBr solution on horizontal enhanced heat transfer tube.

description: This paper presents the experimental results of falling film absorption heat and mass transfer on horizontal enhanced heat transfer tubes. The enhanced tube on the external surface has square frustum projection and this pitch of 26 projections lines-per-inch (ppi). A smooth tube is also tested for reference. The solution in the present tests used is lithium-bromide solution. The heat and mass transfer coefficient test is carried out absorption pressure of 0.8 kPa, the concentration at LiBr solution inlet of 63, 62 and 60 wt. %, the inlet cooling water temperature of 32°C, and film Reynolds number range of 7 to 20. For LiBr solution concentration inlet was 63 wt. %, the heat transfer coefficient of the enhanced tube is approximately 1.3 times higher than that of the smooth tube at low film Reynolds number. In addition, the heat transfer coefficient of enhanced tube at LiBr solution of 60 wt. % is approximately 2.0 times higher than that of the enhanced tube at LiBr solution of 63 wt. % in low film Reynolds number. However, that of enhanced tube at LiBr solution of 62 wt. % lower than that of the enhanced tube at LiBr solution of 63 wt. %. The mass transfer coefficient for the enhanced tubes increases with an increase solution concentration in this study.
DOI: 10.18462/iir.icr.2015.0807
title: Development of a heat pump system for high-temperature heat supply with heat recovery using methanol as the refrigerant.

description: High-temperature heat supply in the range of 100 to 200°C is required for some processes in industries, such as washing, drying, and sterilizing. Efficient energy utilization is an important concern for these processes. In this study, a heat pump system operating between two heat sources at 100 and 200°C was constructed as a feasibility study. Firstly, methanol is selected as the refrigerant in a preliminary survey from the view point of similarities to widely-used refrigerants. The constructed system was a simple refrigerating cycle consisting of a two-stage reciprocating compressor and heat exchangers. In the experiments, it could be demonstrated by the system to heat silicone oil to 200°C with the evaporating temperature at 100°C. The coefficient of the performance (COP) of the operation was 2.16 due to low adiabatic efficiency of the compressor. It is expected from the analysis of loss in each component that this system can achieve a COP over 3 by improving the overall adiabatic efficiency of the compressor and by deducing heat loss from the connecting section from the compressor to condenser.
DOI: 10.5063/f1bc3wgh
title: Ant-Plant Interactions in Brazilian Rupestrian Grasslands - Dataset from 2014

description: Data was collected in the southern region of the EspinhaÃ§o Mountain Range, southeastern Brazil. We selected seven sites similar to one another in altitudinal range (from 1100 to 1200 m asl.), climate regime, and plant species richness, but distant by at least 1.44 km from one another. At each site, we delimited one transect 200 m in length and 1 m in width, which was divided into 20 plots (10 x 1 m). We randomly sampled five plots at least 30 m away from one another. In each plot, we marked all trees, shrubs, subshrubs, rosettes and herbs that were fully accessible to us, those 50-200 cm in height. We monitored the marked plants quarterly in 2014, at the peak and at the end of the rainy and dry seasons (respectively, January, April, July, and October). Between 0800â  1200 and 1400-1700, each plant was observed for approximately 3 min. The interaction event was recorded only when the ant was observed feeding upon the food source. We computed interaction frequency when we observed the same pair of species interacting in a different event. We also recorded the number of worker ants using the resource at the time of monitoring to estimate the recruitment rate of each ant species. We classified interaction events according to the type of resource used by ants: extrafloral nectar and similar secretions (EFNs), floral nectar or pollen (flowers), glands and fleshy pulp of fruits (fruits), and honeydew droplets from trophobiont hemipterans (trophobionts). When we observed an ant on an individual plant that did not provide any resource, or an ant that left a plant without making contact with resources of any type, we defined the interaction as a â  visitâ  .
DOI: 10.18462/iir.icr.2015.0809
title: Comparative study on the performance of cascade supercritical carbon dioxide power cycles for waste heat recovery.

description: For decades, in term of enhancement of overall power generation system efficiency, Waste Heat Recovery System (WHRS) is being spotlighted as eco-friendly technology. Steam Rankine Cycle has been used for usual bottoming cycle of WHRS until now. Recently, however, Supercritical Carbon Dioxide (S-CO₂) Power Cycle is being substituted for Steam Rankine Cycle, because of using supercritical fluid having the characteristics of both of liquid and gas, less compression and circulation work, and smaller size. In addition, for maximizing the overall net power of S-CO₂ Power Cycles in WHRS, Cascade cycle is being considered for advanced cycle modification of simple S-CO₂ Brayton Cycle. In this study, several combined cycles of WHRS such as Steam Rankine Cycle, Simple S-CO₂ Brayton Cycle and Cascade S-CO₂ Power Cycle was investigated by cycle analysis. For comparing the performance of each cycle under the identical situations, the thermodynamic analysis of each cycle which operated in the same heat sources and heat sinks was conducted.
DOI: 10.18462/iir.icr.2015.0811
title: Numerical investigation of flow and heat transfer for a split air conditioner indoor unit.

description: The heat transfer effect of the heat exchanger has been one of the main research focus on how to improve the performance of split air conditioner indoor units. Different locations of the fin and tube heat exchanger and different shapes of inner shell will form different air duct system, which directly affects the air flow field distribution of indoor units, thereby affecting the heat transfer performance of the device and the volume of the outlet air. In this paper, a three-dimensional thin-section model was established for modeling indoor unit by employing CFX in ANSYS. The numerical simulations of a three-stage heat exchanger were conducted. The internal flow field and heat transfer of the air conditioner indoor unit were analyzed for different shapes of heat exchanger. It was proved that the optimized three-stage heat exchanger showed more uniform flow field distribution and more air volume as well as better heat transfer performance.
DOI: 10.18462/iir.icr.2015.0812
title: Experimental studies with an active magnetic regenerating refrigerator.

description: Experimental results for an active magnetic regenerator (AMR) are presented. The focus is on whether or not it pays off to partly substitute soft magnetic material with non-magnetic insulation in a flux-conducting core in the magnet system. Such a substitution reduces losses due to heat conduction and eddy currents, but also reduces the magnetic field. Two different cores were tested in the AMR system with different cooling loads and it is shown, that in the present case, replacing half of the iron with insulation lead to an average reduction in temperature span of 14%, but also a small decrease in COP, hence the substitution did not pay off. Furthermore, it is shown experimentally, that small imbalances in the heat transfer fluid flow greatly influence the system performance. A reduction of these imbalances through valve adjustments resulted in an increase in the temperature span from approximately 16 K to 27.3 K.
DOI: 10.18462/iir.icr.2015.0813
title: Study of the dynamic characteristics of liquid desiccant dehumidification processes.

description: This paper develops a liquid desiccant dehumidification experimental facility. Tests on the dynamic characteristics of the dehumidification process are conducted on the counter-flow structured packing dehumidifier. The time constant of the dynamic response is defined to characterize the dynamic processes. Experiments with different inlet conditions show that time constants of the outlet air humidity ratio and temperature are not always equal. The transient time can be up to 250 seconds before the outlet variables of air achieve steady state. The dynamic responses of the outlet humidity ratio and temperature to the step changes of the mass flow rate of solution are also tested. The experimental results and analysis can be used for modeling validation of liquid desiccant dehumidification processes.
DOI: 10.18462/iir.icr.2015.0816
title: FREEZEWAVE - Innovative and low energy microwave assisted freezing process for high quality foods.

description: FREEZEWAVE project proposes a highly innovative technique which showed that a small amount of emitted microwave energy combined to a slow freezing rate is able to refine ice crystal size in frozen meat. FREEZEWAVE project aims at expanding & optimizing the concept to several foods and also at designing industrial equipment. Herein, the structure and the directions of the project as well as the initial results of this study and the preliminary results of the previous study will be illustrated. More specifically, the application of microwaves during cooling the samples caused oscillated decrease of temperature and had a significant impact on the crystallization process as the degree of supercooling was decreased circa 92% under the tested conditions. The meat microstructure evaluation showed a 62% decrease in the average ice crystal size when samples were frozen under a microwave field as compared to the conventional freezing process.
DOI: 10.5063/f16m34r5
title: Ant-Plant Interactions in Brazilian Rupestrian Grasslands - Dataset from 2014

description: Data was collected in the southern region of the EspinhaÃ§o Mountain Range, southeastern Brazil. We selected seven sites similar to one another in altitudinal range (from 1100 to 1200 m asl.), climate regime, and plant species richness, but distant by at least 1.44 km from one another. At each site, we delimited one transect 200 m in length and 1 m in width, which was divided into 20 plots (10 x 1 m). We randomly sampled five plots at least 30 m away from one another. In each plot, we marked all trees, shrubs, subshrubs, rosettes and herbs that were fully accessible to us, those 50-200 cm in height. We monitored the marked plants quarterly in 2014, at the peak and at the end of the rainy and dry seasons (respectively, January, April, July, and October). Between 0800â  1200 and 1400-1700, each plant was observed for approximately 3 min. The interaction event was recorded only when the ant was observed feeding upon the food source. We computed interaction frequency when we observed the same pair of species interacting in a different event. We also recorded the number of worker ants using the resource at the time of monitoring to estimate the recruitment rate of each ant species. We classified interaction events according to the type of resource used by ants: extrafloral nectar and similar secretions (EFNs), floral nectar or pollen (flowers), glands and fleshy pulp of fruits (fruits), and honeydew droplets from trophobiont hemipterans (trophobionts). When we observed an ant on an individual plant that did not provide any resource, or an ant that left a plant without making contact with resources of any type, we defined the interaction as a â  visitâ  .
DOI: 10.18462/iir.icr.2015.0817
title: Numerical study for detection of refrigerant leakage in vapor compression refrigeration cycle.

description: Vapor compression refrigeration cycle is broadly used in our lives as a form of air-conditioner, chiller, refrigerator, heat pump, etc. When those systems are installed, charging proper amount of refrigerant is one of the most important task. However, even if refrigerant was properly charged, its amount could decrease during the operation due to the refrigerant leak. In fact, the refrigerant leakage is one of the most costly and frequently occurred fault in chiller system. After certain amount of refrigerant was leaked, vapor compression refrigeration cycle shows degradation of performance such as decrease in heating and cooling capacity. Also it can causes serious damage in compressors or expansion devices. Therefore, refrigerant leakage detection is essential technology. Several method have been proposed previously but more sensitive and less expensive method is required to prevent secondary fault. In this study, through the numerical calculation of simple vapor compression refrigeration cycle for residential air heat pump system, new parametric factor for refrigerant leakage is proposed and verified.
DOI: 10.18462/iir.icr.2015.0819
title: A parallel connection device to reduce non-uniform flow distribution in the large-scale vertical radial flow adsorber.

description: In order to reduce the non-uniformity of the flow distribution caused by the excessive height in the large-scale vertical radial flow adsorber, a new kind of parallel connection device is presented in this study. A mathematical model of the parallel connection vertical radial flow adsorber is established to simulate the flow field in the adsorption bed, and the characteristics of the static pressure drop profile and the radial velocity profile are obtained. And this flow distribution of the vertical radial flow adsorber is compared with the one using height-increasing method under the condition of the same bed height. It is shown that the parallel connection device can increase the uniformity by 80% than the height-increasing method.
DOI: 10.15468/r77snc
title: revision of the Malagasy species of Homalium sect. Eumyriantheia Warb. (Salicaceae)

description: This dataset contains the digitized treatments in Plazi based on the original journal article Wendy L. Applequist (2016): revision of the Malagasy species of Homalium sect. Eumyriantheia Warb. (Salicaceae). Candollea 71: 33-60, DOI: 10.15553/c2016v711a7