Search Results - Journal of Refrigeration Magazines Agency Co., Ltd.

A new type of air source heat pump system combined waterless floor heating and hot water supply was proposed, which is characterized in that the refrigerant is condensed directly in the buried pipe for floor heating, at the same time, the high temperature refrigerant is exchanged in the outer coil w...

Full description

An electric vertical take-off and landing flying vehicle (eVTOL) is a potential technology for future urban air mobility. A major challenge for thermal management systems is the high cooling requirement and the variable application scenarios. To overcome this challenge, a multi-scene eVTOL-integrate...

Full description

With the development of cold chain Internet of Things (IoT) technology, real-time temperature monitoring and data sharing have become important means to improve the efficiency of chilled meat supply chain management. In this paper, a strategy for optimizing time and temperature coordination based on...

Full description

Ovarian tissue cryopreservation is an important method for female fertility preservation. Slow freezing of ovarian tissue results in poor follicular survival and low retransplantation efficiency. This study optimized the ovarian tissue cooling procedure by ice seeding, and the effects of ice seeding...

Full description

To investigate the effect of different drying conditions on the efficacy of a closed heat pump clothing-drying system, parametric studies with control variables were carried out on the circulating air volumetric flow rate, expansion valve opening, and air inlet temperature within the drying chamber...

Full description

In the operational diagnosis of air-source heat pumps, the conventional coefficient of performance faces limitations in distinguishing environmental effects from equipment performance degradation due to its dependency on operating conditions. To address this, this study proposes performance consiste...

Full description

Improving the energy efficiency of data centers by conserving energy in cooling systems is a priority strategy. In this study, thermal analysis of the prevailing air-water-air cooling system revealed inefficiencies caused by a significant discrepancy in the flow rate between the air and water sides...

Full description

Applying data-driven fault diagnosis models to data center air conditioning systems can significantly improve operational reliability. However, such models often lack diagnostic interpretability, limiting their application. This study develops a composite fault diagnosis model based on typical machi...

Full description

An experimental platform was built to evaluate the thermal switching performance of a parallel pulsating multi-channel heat pipe using fluoroether HFE-7100 as the working fluid with a liquid filling ratio of 80%. The heating and cooling temperatures of the pulsating heat pipe were controlled using w...

Full description

Given that the steady-state condition measurement in the laboratory cannot fully reflect the actual performance issues of air conditioners, the dynamic performance measurement of room air conditioners based on virtual buildings has become a current research hotspot. This paper determines the key par...

Full description

Energy storage technology can balance the mismatch between energy supply and demand, which is an important link between the use of renewable energy and waste heat. Absorption thermal energy storage has attracted considerable attention in recent years owing to its high energy-storage density, high en...

Full description

In this study, the critical snow formation height of a mixed single-aperture nucleator in an artificial snow machine was examined. The threshold values of critical snow formation height were experimentally measured at different air-water pressure ratios and ambient temperatures, and the effects of a...

Full description

A household photovoltaic intelligent power supply system was proposed to increase the on-site consumption capacity of household photovoltaics and fulfill the requirements for a comfortable and convenient living environment. The system can fulfill the requirements of household electricity, space heat...

Full description

This study utilizes machine learning techniques to conduct an in-depth analysis of time-series historical data on energy consumption in buildings. A generalized model identification method was developed using an optimization algorithm based on black-box models. The final identification model was det...

Full description

Solution absorption energy storage is a new energy storage and release technology characterized by high energy storage density, low heat loss, good mobility, and long-term energy storage. Energy storage density and energy storage efficiency are the key indexes for measuring the energy storage capaci...

Full description

Hydrogen energy, as a carbon-free energy source and a pivotal technology for attaining the goals of "carbon peaking and carbon neutrality", has attracted considerable global interest in recent years. The storage of liquid hydrogen offers several advantages owing to its high hydrogen storag...

Full description

A transcritical CO₂ heat-pump air-conditioning system has effective heating performance at low temperatures, and the variation of dynamic parameters during operation significantly affects the thermal comfort inside the passenger cabin. To study the comfort of the passenger com...

Full description

Non-uniform frost is a significant feature of evaporator surface frost in air-cooled refrigerators, and it is also one of the important causative factors leading to evaporator performance degradation. This paper undertakes a review of the extant research in three distinct areas: firstly, the non-uni...

Full description

As the power density of lithium-ion batteries continues to increase and high-power fast-charging technologies emerge, the development of battery thermal management systems has become an important and challenging area of research. In this study, a direct-cooling thermal management system for multi-bo...

Full description

Dimethyl sulfoxide (Me₂SO) in cell banking exhibits significant side effects on both the cells and the human body. Therefore, an approach that mitigates the side effects of Me₂SO with comparable efficacy is urgently needed. The human umbilical cord mesen...

Full description