Review of heat pump integrated energy systems for future zero-emission vehicles

Zhang, Nan; Lu, Yiji; Ouderji, Zahra Hajabdollahi; Yu, Zhibin

doi:10.1016/j.energy.2023.127101

Cited by 21 publications

(4 citation statements)

References 123 publications

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“…Ref. [26] shows that the transport sector is committed to phasing out fossil-fuel-powered vehicles and achieving zero carbon emissions by 2050.…”

Section: Introductionmentioning

confidence: 99%

Improving the Energy Efficiency of Vehicles by Ensuring the Optimal Value of Excess Pressure in the Cabin Depending on the Travel Speed

Panfilov,

Beskopylny,

Meskhi

2024

Fluids

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This work is devoted to the study of gas-dynamic processes in the operation of climate control systems in the cabins of vehicles (HVAC), focusing on pressure values. This research examines the issue of assessing the required values of air overpressure inside the locomotive cabin, which is necessary to prevent gas exchange between the interior of the cabin and the outside air through leaks in the cabin, including protection against the penetration of harmful substances. The pressure boost in the cabin depends, among other things, on the external air pressure on the locomotive body, the power of the climate system fan, and the ratio of the input and output deflectors. To determine the external air pressure, the problem of train movement in a wind tunnel is considered, the internal and external fluids domain is considered, and the air pressure on the cabin skin is determined using numerical methods CFD based on the Navier–Stokes equations, depending on the speed of movement. The finite-volume modeling package Ansys CFD (Fluent) was used as an implementation. The values of excess internal pressure, which ensures the operation of the climate system under different operating modes, were studied numerically and on the basis of an approximate applied formula. In particular, studies were carried out depending on the speed and movement of transport, on the airflow of the climate system, and on the ratio of the areas of input and output parameters. During a numerical experiment, it was found that for a train speed of 100 km/h, the required excess pressure is 560 kPa, and the most energy-efficient way to increase pressure is to regulate the area of the outlet valves.

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“…Ref. [26] shows that the transport sector is committed to phasing out fossil-fuel-powered vehicles and achieving zero carbon emissions by 2050.…”

Section: Introductionmentioning

confidence: 99%

Improving the Energy Efficiency of Vehicles by Ensuring the Optimal Value of Excess Pressure in the Cabin Depending on the Travel Speed

Panfilov,

Beskopylny,

Meskhi

2024

Fluids

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“…Given the long duration and complexity of future space missions, the two-phase heat exchanger in a vapor compression refrigeration/heat pump system must be compact and efficient in heat transfer. The introduction of mini-channel heat exchanger technology in heat pump/refrigeration systems is expected to significantly increase heat exchange efficiency [4][5], reduce the refrigerant charge [6], and lower the overall weight of the system [7]. Some scholars have carried out researches on the flow condensation in mini-channel, and studied the characteristics of flow, heat transfer and pressure drop experimentally or theoretically.…”

Section: Introductionmentioning

confidence: 99%

Influence of lubricating oil on heat transfer and pressure drop characteristics of R134a flow condensation in mini-channels

Peng,

Chao,

Wang

et al. 2024

Preprint

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In space refrigeration and heat pump systems, the presence of lubricating oil in mini-channel condensers introduces problems of reduced heat transfer efficiency and increased pressure drop. In this paper, the flow condensation of refrigerant R134a in a mini-channel under microgravity is investigated by numerical simulation, and the effects of lubricating oil on heat transfer and pressure drop are analyzed for different tube shapes, hydraulic diameters, and mass fluxes. It was found that as the lubricating oil concentration increases, the heat transfer coefficient decreases while the pressure gradient increases for the same vapor quality. This phenomenon is due to the fact that the presence of the lubricating oil increases the fluid viscosity and the viscous shear increases, leading to a reduction in the inertial forces and the relative velocity of the gas-liquid. Define the ratio of the condensation heat transfer coefficient of the oil-containing refrigerant to the condensation heat transfer coefficient of the pure refrigerant at the same operating condition as the "oil impact factor". When holding the oil concentration constant, the oil impact factor increases as the mass flow rate decreases and the channel hydraulic diameter increases. Moreover, as the refrigerant vapor quality decrease, the oil impact factor also exhibits an upward trend. This study provides optimization insights for the design and development of condensers used in space refrigeration/heat pump systems.

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“…[ 1 ] For this concern, battery technology, which exhibits zero‐carbon emission and even significantly shapes much of our ordinary life, has unprecedentedly skyrocketed nowadays and over the past decades. [ 2 ] Among the numerous battery technologies, lithium‐ion battery (LIB) is highly demanded and extensively popularized in portable electrical appliances, large power facilities, and transport sectors. However, conventional LIBs exploit graphite anode and flammable organic solvents, currently confronting restricted energy density and safety hazards originating from intercalation chemistry within liquid electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Synergetic Control of Li⁺ Transport Ability and Solid Electrolyte Interphase by Boron‐Rich Hexagonal Skeleton Structured All‐Solid‐State Polymer Electrolyte

Zhao

et al. 2023

Energy & Environ Materials

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High Li+ transference number electrolytes have long been understood to provide attractive candidates for realizing uniform deposition of Li+. However, such electrolytes with immobilized anions would result in incomplete solid electrolyte interphase (SEI) formation on the Li anode because it suffers from the absence of appropriate inorganic components entirely derived from anions decomposition. Herein, a boron‐rich hexagonal polymer structured all‐solid‐state polymer electrolyte (BSPE+10% LiBOB) with regulated intermolecular interaction is proposed to trade off a high Li+ transference number against stable SEI properties. The Li+ transference number of the as‐prepared electrolyte is increased from 0.23 to 0.83 owing to the boron‐rich cross‐linker (BC) addition. More intriguingly, for the first time, the experiments combined with theoretical calculation results reveal that BOB− anions have stronger interaction with B atoms in polymer chain than TFSI−, which significantly induce the TFSI− decomposition and consequently increase the amount of LiF and Li3N in the SEI layer. Eventually, a LiFePO4|BSPE+10% LiBOB|Li cell retains 96.7% after 400 cycles while the cell without BC‐resisted electrolyte only retains 40.8%. BSPE+10% LiBOB also facilitates stable electrochemical cycling of solid‐state Li‐S cells. This study blazes a new trail in controlling the Li+ transport ability and SEI properties, synergistically.

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Review of heat pump integrated energy systems for future zero-emission vehicles

Cited by 21 publications

References 123 publications

Improving the Energy Efficiency of Vehicles by Ensuring the Optimal Value of Excess Pressure in the Cabin Depending on the Travel Speed

Improving the Energy Efficiency of Vehicles by Ensuring the Optimal Value of Excess Pressure in the Cabin Depending on the Travel Speed

Influence of lubricating oil on heat transfer and pressure drop characteristics of R134a flow condensation in mini-channels

Synergetic Control of Li⁺ Transport Ability and Solid Electrolyte Interphase by Boron‐Rich Hexagonal Skeleton Structured All‐Solid‐State Polymer Electrolyte

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Review of heat pump integrated energy systems for future zero-emission vehicles

Cited by 21 publications

References 123 publications

Improving the Energy Efficiency of Vehicles by Ensuring the Optimal Value of Excess Pressure in the Cabin Depending on the Travel Speed

Improving the Energy Efficiency of Vehicles by Ensuring the Optimal Value of Excess Pressure in the Cabin Depending on the Travel Speed

Influence of lubricating oil on heat transfer and pressure drop characteristics of R134a flow condensation in mini-channels

Synergetic Control of Li+ Transport Ability and Solid Electrolyte Interphase by Boron‐Rich Hexagonal Skeleton Structured All‐Solid‐State Polymer Electrolyte

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Product

Resources

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Synergetic Control of Li⁺ Transport Ability and Solid Electrolyte Interphase by Boron‐Rich Hexagonal Skeleton Structured All‐Solid‐State Polymer Electrolyte