Explanipedia

XRD investigation of phase separation stability of supercooled sodium acetate trihydrate composites for thermal energy storage Open

Mengdi Yuan, Gerald Englmair, Weiqiang Kong, Jianhua Fan, Chao Xu · 2024

Experimental investigations of multiple heat storage units utilizing supercooling of sodium acetate trihydrate: Stability in application size units Open

Mark Dannemand, Gerald Englmair, Weiqiang Kong, Simon Furbo · 2024

Stable supercooling of sodium acetate trihydrate (SAT) composites can be used to store heat over long periods. When the melted SAT is supercooled and in temperature equilibrium with the ambient, the latent heat of fusion is essentially sto…

Xrd Investigation of Phase Separation Stability of Sodium Acetate Trihydrate Applied for Thermal Energy Storage Utilizing Stable Supercooling: A 3-Year Longitudinal Study Open

Mengdi Yuan, Gerald Englmair, Weiqiang Kong, Jianhua Fan, Chao‐Nan Xu · 2024

Numerical investigations of a latent thermal energy storage for data center cooling Open

Yanlong Zhu, Gerald Englmair, Haotian Huang, Janne Dragsted, Yuan Yuan , et al. · 2023

The thermal performance of a 115 L latent heat storage prototype for cooling data centers was investigated. Experimentally, the heat transfer power and heat absorbed by the heat exchanger during the charging and discharging processes were …

Investigation of cold storage integration in a Danish data center Open

Konstantin Filonenko, Dominik Franjo Dominković, Asger Ulf Jensen, Gerald Englmair · 2023

White-box simulation of flexible cold storage operation as a part of heat, ventilation and air conditioning (HVAC) systems of small- and medium-size datacenters is an important, but underinvestigated topic. In this work, an experimentally …

Analysis of the discharging process of latent heat thermal energy storage units by means of normalized power parameters Open

Andreas König-Haagen, Stephan Höhlein, Ana Lázaro, Mónica Delgado, Gonzalo Diarce , et al. · 2023

Many efforts are being made to mitigate the main disadvantage of most phase change materials – their low thermal conductivities – in order to deliver latent heat energy storage systems (LHESS) with adequate performance. However, the effect…

STATUS, STYRKER, SYNERGIER:DaCES RAPPORT OM ENERGILAGRING I DANMARK 2023 Open

Brian Elmegaard, Claus Schøn Poulsen, Christel Nielsen, Christian Veje, Erik Gydesen Søgaard , et al. · 2023

A simplified numerical model of PCM water energy storage Open

Weiqiang Kong, Gang Wang, Gerald Englmair, Elsabet Nielsen, Janne Dragsted , et al. · 2022

A generic numerical model of PCM water energy storage is developed and validated by experiments. The numerical model consists of a water region and a PCM region. Models of the two regions are derived by the energy differential equations an…

Design optimization of a latent heat storage using sodium acetate trihydrate Open

Gang Wang, Zhirong Liao, Chao Xu, Gerald Englmair, Weiqiang Kong , et al. · 2022

This paper presents numerical investigations on a heat storage utilizing sodium acetate trihydrate (SAT) as phase change material (PCM). The heat storage can be used both in short-term and in long-term by utilizing stable supercooling of S…

Investigation on an air solar-driven open sorption system for comfort cooling Open

Elsabet Nielsen, Sonja Becker-Hardt, Gerald Englmair, Weiqiang Kong, Simon Furbo · 2021

An air solar-driven open sorption system for comfort cooling is investigated experimentally in an indoor test facility. The main components of the system are a solar dehumidifier and a cold storage with desiccant. One operation cycle is 36…

Experimental and numerical study of a latent heat storage using sodium acetate trihydrate for short and long term applications Open

Gang Wang, Chao Xu, Gerald Englmair, Weiqiang Kong, Jianhua Fan , et al. · 2021

A flexible thermal energy storage with 137.8 kg PCM and 75 L water was introduced. The heat storage combined short-term and long-term heat storage functions by utilizing sodium acetate trihydrate as heat storage material. The thermal perfo…

Review on sodium acetate trihydrate in flexible thermal energy storages: Properties, challenges and applications Open

Gang Wang, Chao Xu, Weiqiang Kong, Gerald Englmair, Jianhua Fan , et al. · 2021

Future energy systems with a large share of fluctuating renewable energies demand thermal energy storages that are flexible and reliable. Sodium acetate trihydrate (SAT) has been investigated for many years as heat storage materials but th…

Properties of Phase Change Materials (PCM) in the Lab Environment and under Application Conditions Open

Christoph Rathgeber, Dan Bauer, Michael Brütting, Gonzalo Diarce, Gerald Englmair , et al. · 2021

Deliverable 1 of Subtask 3P is an inventory of properties of Phase Change Materials (PCM) that change comparing experiments in the lab environment with tests under application conditions. Examples where no change is observed are also inclu…

Summary of Work On development and characterization of improved Materials Open

Stefan Gschwander, Ana Lázaro, Mónica Delgado, Christoph Rathgeber, Michael Brütting , et al. · 2021

As the material development is done at different institution the objective of the work was to collect the materials which are under research and development to get an overview on the most relevant properties of these materials and applicat…

Experimental Devices to Investigate the Long-Term Stability of Phase Change Materials under Application Conditions Open

Christoph Rathgeber, Stefan Hiebler, Rocío Bayón, Luisa F. Cabeza, Gabriel Zsembinszki , et al. · 2020

An important prerequisite to select a reliable phase change material (PCM) for thermal energy storage applications is to test it under application conditions. In the case of solid–liquid PCM, a large amount of thermal energy can be stored …

Thermal performance analysis of a CPC solar collector array with series connection to the flat plate solar collector field in Sæby solar heating plant Open

Weiqiang Kong, Simon Furbo, Bengt Perers, Gerald Englmair · 2019

Combined short and long term heat storage with Sodium Acetat Trihydrate in cylindrical tanks Open

Gerald Englmair, Mark Dannemand, Simon Furbo, Jianhua Fan · 2018

A cylindrical heat storage prototype was designed to utilize Sodium Acetate Trihydrate (SAT) for combined short and long term heat storage. It was manufactured with inexpensive standard components of water stores. It contained 150 liter of…

Combined short- and long-term heat storage with Sodium Acetate Trihydrate for solar heat supply in buildings Open

Gerald Englmair, Christoph Moser, Simon Furbo, Hermann Schranzhofer, Jianhua Fan · 2018

Long-term PCM heat storage for a solar space heating and domestic hot water combisystem Open

Jianhua Fan, Simon Furbo, Gerald Englmair · 2017

Testing of PCM Heat Storage Modules with Solar Collectors as Heat Source Open

Gerald Englmair, Mark Dannemand, Jakob Berg Johansen, Weiqiang Kong, Janne Dragsted , et al. · 2016

A latent heat storage based on the phase change material Sodium Acetate Trihydrate (SAT) has been tested as part of a demonstration system. The full heat storage consisted of 4 individual modules each containing about 200 kg of sodium acet…

Laboratory Testing of Solar Combi System with Compact Long Term PCM Heat Storage Open

Jakob Berg Johansen, Gerald Englmair, Mark Dannemand, Weiqiang Kong, Jianhua Fan , et al. · 2016

To enable the transition from fossil fuels as a primary heat source for domestic hot water preparation and space heating solar thermal energy has great potential. The heat from the sun has the disadvantage that it is not always available w…

An Open Sorption Heat Storage Concept and Materials for Building Heat Supply Open

Bernhard Zettl, Gerald Englmair, Walter Somitsch · 2015

The potential of an open sorption storage process for space heating and hot water was evaluated using sorptive material namely zeolite 4A (low grade) and salt-based composite. Sorptive material beds of about 55 kg to 74 kg were able to gen…

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