Flowing Rock
(No.5, 2022)Application of Industrial Building Dehumidification and Cooling Air-conditioning System ...
The low-grade waste heat resources of industrial buildings are abundant but difficult to utilize, especially when the waste heat is below 80 ℃. The effective recovery and utilization of such waste heat are of great importance for energy conservation and environmental protection. In this study, a low-grade heat-driven dehumidification and cooling air-conditioning system for industrial buildings is proposed. The hot water drives the chiller first a...
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Flowing Rock
(No.4, 2022 )Semi-supervised Fault Diagnosis of Refrigeration System Based on Tri-Training
A significant amount of unlabeled data are idle when labeled data with known operating statuses are used in the fault diagnosis of conventional refrigeration systems. Therefore, a semi-supervised fault diagnosis method is proposed in this study for refrigeration systems based on the Tri-Training method, which uses the information in unlabeled data to improve fault diagnosis performance. Seven typical faults in a 316 kW centrifugal chiller are use...
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Flowing Rock
(No.3, 2022)Review of Research on Thermal Management Technology for Electric Vehicles
Thermal management technology for electric vehicles guarantees safety and comfort of driving, and it is one of the key technologies in the development of electric vehicles. The research progress and development trends of thermal management technology were introduced considering the thermal management demand, development history, and key components. Trends and prospects of the future technological development of thermal management in electric vehi...
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Flowing Rock
(No.3, 2022 )Current Status and Future Perspectives of Radiative Sky Cooling
Radiative sky cooling cools an object on the Earth's surface by emitting thermal radiation through the “atmospheric window” (mainly in the wavelength range of 8-13 μm) to the cold universe. As a passive technique to reduce cooling energy requirements without power input, radiative cooling provides a new pathway to address the challenges of the energy crisis and global warming. Over the past few decades, radiative cooling has been restricted to ni...
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Flowing Rock
(No.3, 2022 )Model and Parametric Analysis of Solar-assisted Ground-source Heat Pump System with Dua...
A solar-assisted ground-source heat pump system is an excellent way of supplying clean energy in extremely cold regions. In this system, the solar energy collection and storage system has different connection and operation modes from the ground-source heat pump system. The running time of the solar system directly affects the thermal recovery characteristics of the soil. In this study, a solar-assisted ground-source heat pump system with annual h...
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Flowing Rock
(No.2, 2022 )Performance Analysis of CO2 Dual-temperature Evaporation Heat Pump System with an Eject...
Replacing conventional boilers with an efficient heat pump system is an effective solution to achieving “carbon peaking and carbon neutrality”. In this study, a CO2 heat pump system adopting an ejector to realize dual-temperature evaporation is proposed for cascade utilization of waste heat and high-efficiency heating. Thermodynamic models of the baseline CO2 system (Base), conventional CO2 ejector system (Ej-Evap1), and CO2 ejector system with d...
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