Results 131 to 140 of about 8,993,127 (335)
An All‐Fabric Wearable System for Human‐Machine Interaction
Advanced Materials Technologies, EarlyView.An all‐fabric sensing system enables wearable human–machine interaction through a breathable, stretchable, and scalable design. The all‐fabric capacitive sensor achieves a gauge factor of 2.03 over 72% strain and supports body‐motion tracking, 90.5% hand gesture recognition, and real‐time prosthetic hand control, demonstrating a promising pathway ...
Rayane Tchantchane +3 more
wiley +1 more source
AIP AdvancesRefrigerant injection techniques are usually proposed to improve the performance and reliability of compressors when a single-screw compressor applied to an air-source heat pump works at low temperatures in winter.
Qiangyu Wen +4 more
doaj +1 more source
Frosting and Defrosting on Air Source Heat Pump Evaporators
, 2021 Air source heat pumps has become increasingly popular for residential households as they are considered an energy efficient alternative on the heating market. The air source heat pumps use the outdoor air as heat source and can operate in cold climates around -15 to -20°C, but as the temperatures drops below 6°C the heat pump experiences problems with ...
openaire +1 more source
Research on Improving the Performance of Air- source Heat Pump
Zhileng xuebao, 2007 The problems for heat pumps operating at low ambient temperatures were analyzed.A by-pass capillary tube was added on the discharge pipe behind the four-way valve and a tube was added in an accumulator in a heat pump system to solve the problem.The minimum heat transfer area of the tube for subcooling and the optimal length range of the by-pass ...
Zhen Bing +5 more
openaire +1 more source
Experimental Study on Fault Detection Algorithm Using Regression Method for Plural Indoor Units Faults of Multi-Heat Pump System under Heating Mode [PDF]
, 2012 This paper presents the fault detection algorithm using regression method for plural indoor units faults of multi-heat pump system under heating mode. To develop the fault detection algorithm, experiment was performed under no fault mode.
Kim, Hak Soo, Kim, Min Soo, Cho, Min Ki
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Advanced Optical Materials, EarlyView.Low‐index and low‐loss vdW muscovite represents an emerging robust dielectric platform for the creation of next‐generation all‐vdW nanophotonic architectures. Its utilization as a low‐index building‐block in all‐vdW multilayers enables extreme optical contrast when paired with MoS2, paving the way to the realization of few‐layer ultrathin DBS ...
Meri H. Hayrapetyan +10 more
wiley +1 more source
Performance Analysis of CO2 Air-source Heat Pump Heating System
Zhileng xuebao, 2020 The energy efficiency of conventional CO2 systems used for heating is low. Therefore, cascade and subcooling systems can be adopted to improve the performance of CO2 systems. In this study, the thermodynamic models of a baseline CO2 system (BASE), R410A vapor injection system, cascade system, indirect dedicated mechanical subcooling CO2 system (IDMS ...
Qi Haifeng +5 more
openaire +1 more source
Advanced Optical Materials, EarlyView.This work demonstrates fast electrical control of the phase of broadband terahertz pulses using a field‐free spintronic emitter. An antenna‐integrated Ta/CoFeB/Pt heterostructure switches its magnetization through spin‐orbit torque with 1 μs$\umu{\rm s}$ electrical pulses, producing complete π$\pi$‐phase inversion without external magnetic fields ...
Amir Khan +6 more
wiley +1 more source
Energy effectivity of air source heat pump
, 2020 The paper presents the results of simulation of heat pump air-to-air. Numerical design of the main heat exchangers initially performed for a nominal re gime with heating capacity 10.5 kW: evaporator and condenser with heat exchange surface of the minimum
Filatau, S. A. +2 more
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