cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18462/iir.pcm.2018.0001
title: The rate problem: search for application specific optimization of energy storage density and exchange rate.

description: The use of phase change materials (PCMs) in energetic systems today is in large parts restricted by dynamic issues, or what could be termed the “rate problem”; i.e., how long will it take (heat transfer rate) to store, or recover, a given amount of thermal energy in a latent heat energy storage system (LHESS) for a specific application? This problem comes in part because PCMs have relatively low thermal conductivities in both solid and liquid phases. This paper will focus on the work done currently in the PCM heat transfer community, including the author’s laboratory, related to a better understanding of heat transfer within PCM-based thermal
storage systems (TES) and the search for application specific designs of PCM-TES (often still by expensive trial and error). This review and discussion of work done will be accompanied by a look ahead asking the question: can heat exchanger design rules be established?
DOI: 10.18462/iir.pcm.2018.0005
title: Overview of industry applications of deepchill™ slurry.

description: In light of the PCM 2018 conference, the scope of the conference is to highlight the novel technologies using Phase Change Materials (PCMs) and Slurries (ice or hydrate slurries). This report summarizes the application of DeepChill™(DC) slurry ice for servicing the fisheries, food processing, supermarkets and ice thermal storage industries. The report focuses to highlight the novel technologies that DC is and related it to the focus of the PCM2018 conference:
- Thermophysical and rheological properties of DC Slurries
- How DC is optimized for refrigeration applications
- Innovative and improved equipment and logistics for generation, handling, distribution and employment of DC
- Renewable heating and cooling by using PCMs and Slurries
- Thermal energy storage and energy savings via PCMs and Slurries
- Industrial (food, transport, etc.) and building applications of PCMs and Slurries
- Sustainability impact of refrigeration and air conditioning technologies involving PCMs and Slurries
DOI: 10.18462/iir.pcm.2018.0009
title: A simple and fast methodology for the design of platebased LHTES systems.

description: One of the factors that limit the commercial deployment of LHTES systems is their complex design procedure; accordingly, there is a need of tools that allow their fast and accurate simulation. In the present work, a correlation that allows the determination of the discharging time of plate-based LHTES systems is first presented. Based on that correlation and other parameters constrained by the application, a simplified methodology for the design of plate-based LHTES systems is presented. It consists of 3 simple steps and allows a complete sizing of the system without the need of simulations. This reduces the design procedure time from days/hours to minutes.
DOI: 10.18462/iir.pcm.2018.0017
title: A pseudo-single-phase continuum model for melting ice slurries in pipe flows.

description: Thermal behaviors of ethylene glycol-water ice slurry flowing through a horizontal heated tube is investigated numerically. The ice slurry is assumed to behave as a single-phase Newtonian fluid with effective properties depending on temperature and ice fraction. The 3D steady-state model includes the mass, momentum and energy conservation equations as well as a transport equation for the ice particles (balance between convective and diffusive fluxes). The diffusive fluxes include those induced by the shear rate gradients, the spatial variation of viscosity and the particle settling. The heat and mass exchanges between the two phases are numerically modeled through source terms. The model was first validated with the experimental results of the open literature then applied to both laminar and turbulent flow regimes. The numerical solutions are found to be in good agreement with published results and have displayed some important heat transfer characteristics of the melting ice slurry.
DOI: 10.18462/iir.pcm.2018.0038
title: Decorative wood-based panels loaded with biosourced PCMs.

description: Decorative wood-based panels loaded with biosourced phase changing material (PCMs) were manufactured. In order to test their possibilities in province of Quebec, two test-huts of 2 X 2.5 X 3m were built. The two test-huts have been built with a large window facing south. The construction was performed following the Canadian building code. In the first hut, decorative wood-based panels
loaded with biosourced PCM were installed while none-PCM panels were installed in the other hut. The behavior of the two huts was compared and PCM efficiency was evaluated. This presentation will aim to show the first results given by the two huts. It is expected, in the Nordic context, that these decorative wood-based panels would help reduce overheating in summer and avoid the need of a cooler. In winter, they should help to save energy.
DOI: 10.18462/iir.pcm.2018.0039
title: Energy consumption reduction in a refrigeration system using phase change materials.

description: This study is focused on the application of phase change materials (PCM) in low temperature systems, and the influence of using PCM in a domestic refrigerator is investigated. A type of eutectic PCM solution is added to the inner compartment walls of a household refrigerator by using commercially available PCM filled containers. Water is also used as a PCM and is added to the surface of the evaporator. The system is tested to determine the effects the PCMs have on the system. The effects of PCM on the refrigeration system are investigated by comparing the On-Off cycling of the system, total run time, and energy consumption with and without PCM. The benefit of PCM in the case of power outages is also investigated. The analysis of the results illustrates a significant improvement of the performance compared to a conventional refrigeration system.
DOI: 10.18462/iir.pcm.2018.0045
title: A thermal stability study of the urea-sodium nitrate eutectic mixture as a PCM.

description: The eutectic mixture formed by urea and sodium nitrate has been previously identified as a PCM candidate by the authors for heating and domestic hot water storage applications. It presents a melting point of 86 °C, a melting enthalpy of 172 J/g and a price around 0.9 €/kg. In a previous work of some of the authors, the thermal stability of the eutectic mixture was preliminarily evaluated using an accelerated thermal cycling test that comprised 210 thermal cycles. Under the experimental conditions applied, the PCMs showed a stable behaviour. The main objective of the present work is to evaluate the stability of the mixture for longer periods of use under conditions representative of actual applications. Thermal degradation segregation will be assessed experimentally close to operation conditions.
DOI: 10.18462/iir.pcm.2018.0046
title: Experimental investigation on heat transfer characteristics in a phase change dispersion.

description: A Phase Change Dispersion (PCD) consists of a carrier fluid and a dispersed Phase Change Material (PCM) that changes from solid to liquid while absorbing heat at nearly constant temperature. Due to the phase change of the PCM, the PCD is an efficient heat transfer fluid that enables storing latent heat. To use PCD in technical applications, comprehensive understanding of the heat transfer mechanism is required. A test rig to measure bulk fluid and inner wall temperatures of a PCD flowing through a tube under constant heat flux boundary condition is presented. The temperature measurements allows to calculate local heat transfer coefficients and the apparent specific heat capacity of the PCD. Tests with water were performed and verified with known correlations. Preliminary results of experiments with PCD that consists of dispersed paraffin in water are presented and discussed. The comparison to water at the same Reynolds number showed an enlarged heat capacity and heat transfer coefficients.
DOI: 10.18462/iir.pcm.2018.0049
title: Life cycle assessment of phase change materials, component and system concepts.

description: The main objectives of research on Phase Change Materials (PCM) for thermal storage are the development of low-loss and compact storage systems with high capacity (sensible water storages being the benchmark). If the storage is to be implemented in an application with the aim to increase its energy efficiency, beside the technical/thermal properties and cost factors, also the environmental impact of the storage production and operation need to be considered during development. Yet up to now, a holistic development approach that
considers the primary energy used for the manufacturing, operation and disposal in relationship to the potential energy savings does not exist for innovative storage concepts. Therefore, we are presenting data on the environmental impact of PCM on material and component level developed within the German project “Speicher LCA” (engl. “Storage Life Cycle Assessment”). The evaluation shows that PCM can be environmentally beneficial compared to water, if they are used in an application with a small useful temperature difference (e.g. cooling). A further analysis shows that in applications with high cycle numbers, PCM-based storages can also be favorable compared to an ice storage because of the higher Energy Efficiency Ratio (EER) of the chiller providing the cold (100 to 600 cycles, depending on the material).
DOI: 10.18462/iir.pcm.2018.0054
title: Performance analysis of a double pass solar air heater with and without thermal storage medium.

description: An experimental performance analysis of a double pass solar air heater (DPSAH) is performed with three different configurations under climatic conditions of Pakistan. These configurations include, without fins and without phase change material (PCM), with fins but without PCM, with fins and PCM in circular tubes with fins. Paraffin wax of melting point 56˚C has been used as PCM. Data were collected from 9am to 10pm on hourly basis. Important parameters such as solar irradiance, flow rate of air through DPSAH, temperatures at different points of DPSAH, thermal efficiency, heat input, heat output, heat stored, The average efficiency of third configuration (C3) was 56.1% and 30.8% higher than first configuration (C1) and second configuration (C2), respectively. Based on the detailed experimental study it was concluded that C3 is the most efficient configuration for double pass SAH.
DOI: 10.25549/uschist-c104-272103
title: Daily Trojan, vol. 192, no. 34, Oct 10, 2017

description: Daily Trojan, vol. 192, no. 34, Oct 10, 2017.
DOI: 10.25549/uschist-c104-272120
title: Daily Trojan, vol. 192, no. 32, Oct 06, 2017

description: Daily Trojan, vol. 192, no. 32, Oct 06, 2017.
DOI: 10.25549/uschist-c104-272129
title: Daily Trojan, vol. 192, no. 35, Oct 11, 2017

description: Daily Trojan, vol. 192, no. 35, Oct 11, 2017.
DOI: 10.25549/uschist-c104-272138
title: Daily Trojan, vol. 192, no. 38, Oct 16, 2017

description: Daily Trojan, vol. 192, no. 38, Oct 16, 2017.
DOI: 10.5281/zenodo.1421688
title: California Sea Lion (Zalophus Californianus)  Proteomics Data

description: Proteomics data for <strong>California sea lion</strong> (<em>Zalophus californianus</em>)  (Collaboration Wendy).
DOI: 10.5281/zenodo.1421689
title: California Sea Lion (Zalophus Californianus)  Proteomics Data

description: Proteomics data for <strong>California sea lion</strong> (<em>Zalophus californianus</em>)  (Collaboration Wendy).
DOI: 10.5281/zenodo.1422823
title: Genome-wide association meta-analysis of 30,000 samples identifies seven novel loci for quantitative ECG traits

description: <strong>Introduction</strong>

These are the <em>Summary Level-data</em> as presented in:

"Genome-wide association meta-analysis of 30,000 samples identifies seven novel loci for quantitative ECG traits". Eur J Hum Genet. 2019 Jan 24. doi: 10.1038/s41431-018-0295-z.<em> [Epub ahead of print]</em>

If you use these data please cite the corresponding manuscript, which can be downloaded here: https://rdcu.be/bh8mu. When you have any questions or comments regarding this study or these files, please contact me via:

Jessica van Setten, PhD | <em>Department of Cardiology, University Medical Center Utrecht, Utrecht University</em> | j.vansetten [at] umcutrecht [dot] nl

 

<strong>Files and description</strong>

There are four files available:


	RR_summary_Sept2018.txt.gz - gzipped file containing all the (unfiltered) meta-analysis results for RR interval
	PR_summary_Sept2018.txt.gz - gzipped file containing all the (unfiltered) meta-analysis results for PR interval
	QT_summary_Sept2018.txt.gz - gzipped file containing all the (unfiltered) meta-analysis results for QT interval
	QRS_summary_Sept2018.txt.gz - gzipped file containing all the (unfiltered) meta-analysis results for QRS duration


All these files have the same lay-out and are gzipped. The reference used for meta-analysis of GWAS was Genome of the Netherlands v4. 


	<em>SNP</em> - variantID (rsID), please note that few hundred variants do not have an rsID, but are NA instead. These can still be identified by chromosome and position.
	<em>CHR</em> - chromosome numbers [1-22 and X].
	<em>POS</em> - base pair position, hg19 / build37.
	<em>CODED_ALLELE</em> - coded allele, <em>i.e.</em> the effect allele, as represented (and harmonized) across cohorts. Note that this is not necessarily the minor allele.
	<em>NON_CODED_ALLELE</em> - the other allele, <em>i.e.</em> the non-effect allele.
	<em>CODED_ALLELE_FREQ</em> - coded allele frequency, <em>i.e.</em> the effect allele frequency. Note that this is not necessarily the minor allele frequency.
	<em>BETA</em> - beta from the fixed-effects model.
	<em>SE </em>- standard error from the fixed-effects model.
	<em>P </em>- P-value from the fixed-effects model.
	<em>NEAREST_GENE</em> - the gene closest to the respective variant.
DOI: 10.5281/zenodo.1422824
title: Genome-wide association meta-analysis of 30,000 samples identifies seven novel loci for quantitative ECG traits

description: <strong>Introduction</strong>

These are the <em>Summary Level-data</em> as presented in:

"Genome-wide association meta-analysis of 30,000 samples identifies seven novel loci for quantitative ECG traits". Eur J Hum Genet. 2019 Jan 24. doi: 10.1038/s41431-018-0295-z.<em> [Epub ahead of print]</em>

If you use these data please cite the corresponding manuscript, which can be downloaded here: https://rdcu.be/bh8mu. When you have any questions or comments regarding this study or these files, please contact me via:

Jessica van Setten, PhD | <em>Department of Cardiology, University Medical Center Utrecht, Utrecht University</em> | j.vansetten [at] umcutrecht [dot] nl

 

<strong>Files and description</strong>

There are four files available:


	RR_summary_Sept2018.txt.gz - gzipped file containing all the (unfiltered) meta-analysis results for RR interval
	PR_summary_Sept2018.txt.gz - gzipped file containing all the (unfiltered) meta-analysis results for PR interval
	QT_summary_Sept2018.txt.gz - gzipped file containing all the (unfiltered) meta-analysis results for QT interval
	QRS_summary_Sept2018.txt.gz - gzipped file containing all the (unfiltered) meta-analysis results for QRS duration


All these files have the same lay-out and are gzipped. The reference used for meta-analysis of GWAS was Genome of the Netherlands v4. 


	<em>SNP</em> - variantID (rsID), please note that few hundred variants do not have an rsID, but are NA instead. These can still be identified by chromosome and position.
	<em>CHR</em> - chromosome numbers [1-22 and X].
	<em>POS</em> - base pair position, hg19 / build37.
	<em>CODED_ALLELE</em> - coded allele, <em>i.e.</em> the effect allele, as represented (and harmonized) across cohorts. Note that this is not necessarily the minor allele.
	<em>NON_CODED_ALLELE</em> - the other allele, <em>i.e.</em> the non-effect allele.
	<em>CODED_ALLELE_FREQ</em> - coded allele frequency, <em>i.e.</em> the effect allele frequency. Note that this is not necessarily the minor allele frequency.
	<em>BETA</em> - beta from the fixed-effects model.
	<em>SE </em>- standard error from the fixed-effects model.
	<em>P </em>- P-value from the fixed-effects model.
	<em>NEAREST_GENE</em> - the gene closest to the respective variant.
DOI: 10.7910/dvn/0cjmvr/jl1jy9
title: petitions.xlsx
DOI: 10.7910/dvn/qcvs4k/rgvwht
title: petitions.xlsx
DOI: 10.7910/dvn/r0acta/npwv3y
title: petitions.xlsx
DOI: 10.7910/dvn/rszude/bxiqmo
title: petitions.xlsx
DOI: 10.7910/dvn/tke4ms/j7srym
title: petitions.xlsx
DOI: 10.7910/dvn/wpaiqn/etozov
title: petitions.xlsx
DOI: 10.7910/dvn/zasmd8/lagb92
title: petitions.xlsx
DOI: 10.18462/iir.pcm.2018.0006
title: A novel PCM accumulator for refrigerated display cabinet: design and CFD simulations.

description: In supermarkets, power outages, temperature fluctuations due to defrosting cycles and peak demands when loading warm items, contribute to reducing shelf life and quality of food products. The objective of the study is to investigate the integration of a phase change material (PCM) accumulator along the air circulation path in the lower part of a refrigerated display cabinet to maintain the product temperature within safe limits. The PCM accumulator consists of three fluids: PCM (pure water is used here), air to be cooled down and CO2 as cooling medium. The lower part of such cabinets offers limited volume and thus requires effective space use. Dimensioning a three-fluid PCM accumulator integrated into the air circulation path requires a detailed CFD design, given the dynamic nature of thermal loads and small temperature differences during charging and discharging phases. A generic geometry is designed to fulfil the purpose. In this first study, transient CFD simulations are performed for a series of simplified geometries to evaluate the influence of the distance between CO2 coils and air ducts with regards to freezing time, melting time and heat absorbed from the air. The results showed that a variation of a few millimetres in the distance between the air ducts for a given PCM
accumulator dimension yields considerably different charging and discharging times. The calculated integrated heat flux from all air ducts provided a useful indication to select the geometric configuration giving the best match to a given application, e.g. covering defrost cycles or night-time cooling.
DOI: 10.18462/iir.pcm.2018.0013
title: Dynamic study efficiency of the use of phase change materials integrated on the ceiling of a community hall.

description: In this article, we study the influence of the insertion of a phase change materials (PCMs) in the ceiling of a community hall on its comfort during the summer period. This study was realized using a dynamic thermal simulation of the building using a modelica library (BuildSysPro). Initially, we have defined materials used for the building including the characteristics of the phase change material used (thermal conductivity, melting temperature, specific heat capacity, latent heat and density). We have tested two configurations: insertion of a layer of PCM mortar and incorporation of PCM in rock wool ceiling tiles. We study the influence of the over-ventilation during night on these two cases. By comparing the simulation results during summer, we have noticed that the over-ventilation during night has a significant influence in reducing the inner temperature of the building. The insertion of PCM in a layer of ceiling tiles didn’t have a significant efficiency contrary to the insertion of a layer of PCM mortar. Secondly, we have optimized the PCM characteristics in order to achieve more comfort during summer.
DOI: 10.18462/iir.pcm.2018.0022
title: Solidification monitoring of supercooled phase change materials.

description: Salt hydrates are often used as heat storage materials according to their interesting thermal properties (high latent and specific heat). Their main drawback is their large supercooling, where the material may remain liquid below its melting point. However, this property should be turned into a benefit if a reliable way of triggering crystallization is developed, as heat could be released on demand. Sodium Acetate Trihydrate (SAT, CH3COONa.3H2O), which can exhibit 90K of supercooling, was used for this study. For a better understanding of how heat is released after crystallization triggering, caused by seeding, a fully new method was developed to measure the samples’ opacification, using a HeNe laser (633 nm) coupled with a photodetector, measuring the solid fraction thanks to the difference between liquid and solid specular transmittance. This technique was compared with temperature measurement and image processing, showing consistency between the different methods.
DOI: 10.18462/iir.pcm.2018.0028
title: Effect of phase change kinetics on energy efficiency of secondary refrigeration with hydrate slurries.

description: Secondary refrigeration is one of the currently available means for reducing refrigerant leaks in large cooling units. Compared to the well-known ice slurry, hydrate slurries present new features, especially when they involve a gaseous phase, the pressure of which influences the fusion temperature. The clathrate-hydrate system considered herein is the mixed hydrate of CO2 plus tetra-n-butyl-phosphonium-bromide (TBPB) melting around 12°C. The concern of energy efficiency focuses attention on the total energy consumption of the process (herein air-conditioning), and therefore includes the primary cooling unit into the analysis. The present issue is very slow phase-change kinetics (compared to the breakthrough time of the slurry in the heat exchangers) problematic with respect to the energy consumption of the whole process? The equations of phase change in the heat exchangers are modified for including a first-order kinetics law characterized by a time constant and using the temperature shift from equilibrium as the driving force. The mixed hydrate is compared to the ice slurry. The results are unexpected but fully explained by a thermodynamic analysis.
DOI: 10.18462/iir.pcm.2018.0029
title: Ammonia alum hydrate-based phase change materials for effective use of excess exhaust heat from gas engines.

description: For effective use of excess exhaust heat from gas engines, a novel PCM was prepared by adding anhydrous sodium sulfate and D-mannitol to ammonia alum hydrate. It melted and stored latent heat at the temperature range of exhaust heat from gas engines (around 90°C). Heat storage and release characteristics of the novel PCM were investigated with a heat storage tank containing hot water and the novel PCM packaged into resin bags. As a result, the novel PCM stored and released more than 400 MJ×m-3 of heat at the temperature range between 80°C and 90°C. The amount of heat storage and release by the PCM was approximately ten times higher than that of water with same volume. This result indicates that the novel PCM can reduce the volume of hot water tank dramatically in addition to storing and releasing exhaust heat from gas engines.