Danish Technological Institute DTI

Arhus, Denmark

Danish Technological Institute DTI

Arhus, Denmark

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Patent
Saudi Aramco and Danish Technological Institute DTI | Date: 2017-02-15

The invention relates to an apparatus and method for determining presence of microorganisms in, e.g., sea water or other water samples. Means are provided for taking a sample of the water to be tested, moving it through a series of reservoirs, and combining it with an indicator, such as a dye, which binds to DNA of any microorganisms in the sample. Any binding of indicator is measured by, e.g., a spectrofluorometer, or other device suitable for measuring the indicator.


Patent
Tokyo Electric Power Company, Chubu Electric Power Co., Kansai Electric Power Co., Kabushiki Kaisha Kobe Seiko Sho, Danish Technological Institute DTI and Johnson Controls | Date: 2013-01-23

A refrigerator is capable of maintaining a lubricant supply to a compressor and is environment-friendly and simply configured. The refrigerator includes: a cooling-water line 14 having a cooling-water pump 18 to thereby send water for cooling a refrigerant inside of a condenser 6; a lubricating-water supply line 32 connecting the part downstream from the cooling-water pump 18 on the cooling-water line 14 and a compressor 4 and supplying water flowing through the cooling-water line 14 as a lubricant to the compressor 4; and a backup means 60 supplying water to the lubricating-water supply line 32 instead of supplying water from the cooling-water line 14 when the cooling-water pump 18 is not driven.


Patent
Tokyo Electric Power Company, Chubu Electric Power Co., Kansai Electric Power Co., Kabushiki Kaisha Kobe Seiko Sho, Danish Technological Institute DTI and Johnson Controls | Date: 2013-01-23

An axial flow compressor 10 includes: a rotor 31 having a rotor vane 34; a first pressing member 41 joined to one end surface of the rotor 31; a second pressing member 42 joined to the other end surface of the rotor 31; a rotor shaft portion 46 penetrating the first pressing member 41, the rotor 31 and the second pressing member 42; and a nut 43 which fixes the first pressing member 41 and the second pressing member 42 on the rotor shaft portion 46 with the first pressing member 41 and the second pressing member 42 holding the rotor 31 between. The rotor shaft portion 46 is made of a material having a lower linear expansion coefficient than that of a material making at least a part of the rotor 31. The material making at least a part of the rotor 31 may be aluminum or aluminum alloy.


Patent
Tokyo Electric Power Company, Chubu Electric Power Co., Kansai Electric Power Co., Kabushiki Kaisha Kobe Seiko Sho, Danish Technological Institute DTI and Johnson Controls | Date: 2013-01-23

An axial flow compressor 10 includes: an electric motor 22 including a rotating shaft 22a; a compression portion 20 including a driving shaft 40 connected without a speed-up gear to the rotating shaft 22a of the electric motor 22 and a rotor 31 rotating together with the driving shaft 40, the compression portion 20 driving the driving shaft 40 and thereby compressing a working fluid; and a velocity reducing portion 24 having a space for reducing the flow velocity of a working fluid discharged from a discharge opening of the compression portion 20. The rotating shaft 22a of the electric motor 22 is connected to the end of the driving shaft 40 on the side of the discharge opening; and the velocity reducing portion 24 is disposed so as to surround the electric motor 22.


Patent
TOKYO Electrical POWER COMPAY INCORPORATED, Chubu Electric Power Co., Johnson Controls, Kobe Steel, Danish Technological Institute DTI and Kansai Electric Power Co. | Date: 2012-04-13

The condensing apparatus 71 includes: a compressor 10 which has a compression part 20 compressing a working fluid; a condenser 13 which condenses the working fluid compressed by the compression part 20; and a spray mechanism 81 including a nozzle 82 which sprays a cooling fluid into a fluid passage 91 to cool the working fluid flowing through the fluid passage 91 between a discharge opening CS2 of the compression part 20 and an inlet 13a of the condenser 13.


Patent
Tokyo Electric Power Company, Chubu Electric Power Co., Kansai Electric Power Co., Kobe Steel, Danish Technological Institute DTI and Johnson Controls | Date: 2014-03-05

The condensing apparatus 71 includes: a compressor 10 which has a compression part 20 compressing a working fluid; a condenser 13 which condenses the working fluid compressed by the compression part 20; and a spray mechanism 81 including a nozzle 82 which sprays a cooling fluid into a fluid passage 91 to cool the working fluid flowing through the fluid passage 91 between a discharge opening CS2 of the compression part 20 and an inlet 13a of the condenser 13.


Patent
Saudi Aramco and Danish Technological Institute DTI | Date: 2015-02-13

The invention relates to an apparatus and method for determining presence of microorganisms in, e.g., sea water or other water samples. Means are provided for taking a sample of the water to be tested, moving it through a series of reservoirs, and combining it with an indicator, such as a dye, which binds to DNA of any microorganisms in the sample. Any binding of indicator is measured by, e.g., a spectrofluorometer, or other device suitable for measuring the indicator.


Drozdov A.D.,Danish Technological Institute DTI
International Journal of Solids and Structures | Year: 2011

Observations are reported on a polymer composite (polyamide-6 reinforced with short glass fibers) in tensile relaxation tests with various strains, tensile creep tests with various stresses, and cyclic tests with a stress-controlled program (ratcheting with a fixed maximum stress and various minimum stresses). Constitutive equations are developed in cyclic viscoelastoplasticity of polymer composites. Adjustable parameters in the stress-strain relations are found by fitting observations in relaxation tests and cyclic tests (16 cycles of loading-unloading). It is demonstrated that the model correctly predicts experimental data in creep tests and dependencies of maximum and minimum strains per cycle on number of cycles up to fatigue fracture of specimens. The influence of strain rate and minimum stress on number of cycles to failure is studied numerically. © 2011 Elsevier Ltd. All rights reserved.


Thybring E.E.,Danish Technological Institute DTI
International Biodeterioration and Biodegradation | Year: 2013

The relation between modification intensity and decay resistance of modified wood is investigated based on a compilation of experimental data from literature for six different modification techniques. The purpose is to expand our knowledge on the mechanism of wood modification, in particular how decay resistance is achieved. Decay resistance of modified wood appears to be related to reduction in maximum moisture capacity of the cell wall. The analysis indicates that decay cannot progress below 25% moisture content. The moisture exclusion efficiency (MEE) and anti-swelling efficiency (ASE) are both discussed as means of quantifying modification efficacy. Both MEE and ASE have advantages and disadvantages, but MEE seems to provide a threshold for decay resistance unaffected by type of modification. However, MEE cannot be determined at water saturation and the use of it as a measure for modification efficacy therefore relies on the assumption that MEE is more or less similar at saturation and below. © 2013 Elsevier Ltd.


Drozdov A.D.,Danish Technological Institute DTI
International Journal of Solids and Structures | Year: 2014

Constitutive equations are derived for the viscoplastic behavior of a host medium driven by diffusion of guest atoms. With reference to the trapping concept, two states of a guest atom are distinguished: mobile and immobilized (due to alloying with the host matrix). This allows propagation of a sharp interphase to be described between regions rich and poor in guest atoms. The model is applied to study the mechanical response of a spherical electrode particle in a Li-ion battery. Ability of the constitutive equations to capture basic phenomena observed in anode particles under lithiation is demonstrated by numerical simulation. © 2013 Elsevier Ltd. All rights reserved.

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