Fraunhofer Institute for Solar Energy Systems ISEThe objective is the development of a heater on zeolite basis with water as operating medium, which based on novel absorption heat exchangers and optimized functionality of evaporator and condenser is significantly more compact and cost-effective than the devices on the market with comparable outputs and an annual COP of over 1.3. Porous materials with good thermal conductivity are of central importance for the development of absorption heat exchangers. A large surface paired with thin sorbent layers (< 100 µm) accelerates the dynamics of the ad- and desorption process. It thus offers a larger potential for a higher power density of the sorption module of the gas heat pump. | Duration: 05/2013 - 04/2017
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Sintered aluminum fiber material coated with adsorbent material (SAPO-34).
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Latent heat storage module.
Project in the Business Area: Energy Efficient Buildings, Topic: Heat Storage, Duration: 08/2017 - 01/2021
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Pilotplant including a storage tank with 5m³ volume.
Project in the Business Area Energy Efficient Buildings; Topic: Thermal Storage for Buildings; Duration: October 2013 - September 2017
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Thermal measuring point for determining cooling energy consumption.
Project in the Business Area Energy Efficient Buildings; Topics: Ventilation- and Air-Conditioning, Thermal Storage for Buildings, Building Operations Management, Building System Technology; Duration: December 2012 - November 2015
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In the DSC measurement curves shown, the melting and the crystallization behavior of paraffin (black) and the emulsion (red) can be compared.
Project in the Business Area Energy Efficient Buildings; Topic: Thermal Storage for Buildings; Duration: September 2012 - August 2016
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Thermography analysis of sub-cooling behavior.
Project in the Business Area: Energy-Efficient Buildings, Topic: Thermal storage for buildings, Duration: 10/2018 - 09/2022
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Pneumatic cylinders and Peltier elements, which can be placed flexibly, allow simultaneous cycling of different sample geometries.
Project in the Business Area: Energy-Efficient Buildings, Topic: Thermal Energy Storage for Buildings, Duration: 10/2018 - 09/2021
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Thermal Fabric (Thermogewebe)
Technological Design and Thermal Fluid Dynamic Characterization of Wire Fabric-Based Micro Heat Exchangers with High Performance Potential
Section of a textile thermo-fabric.
Project in the Business Area Energy Efficient Buildings, Topics: Thermal Energy Storage for Buildings, Ventilation and Air-Conditioning, Heat Transfer in Building Energy Systems Duration: October 2015 - September 2019
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Fouling on the tube bundle of a closed wet cooling tower.
In process technology, fouling is a permanent problem and is estimated to cost 0.25% of GDP in industrialized countries. Evaporative cooling towers, which are frequently used in industrial processes and refrigeration plants to dissipate waste heat to the environment, are also subject to fouling: as they work with untreated outside air, they are exposed to both natural (e.g. pollen) and man-made (e.g. industrial dust) pollution. Since there is hardly any congruent data available on the quantitative influence of fouling on the thermal performance of cooling towers, Fraunhofer ISE is conducting a corresponding series of tests. For this purpose, a closed cooling tower is tested under a variety of operating conditions and with different contamination conditions of the tube bundle. Based on this, an algorithm for the automatic detection of the performance degradation due to fouling in cooling towers shall be developed. It will then be tested for transferability and robustness in a laboratory system and also on field installations. | Duration: 05/2017 - 12/2019
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