Energy-saving research in rail transport air-conditioning system has an important position, because air conditioning system of subway station is a multi-input and multiple-output, strong coupling, nonlinear, complex control object of uncertain time-delay, with significant characteristics of distributed systems, it''s hard for conventional controller to achieve the …
Learn MoreTraditional air conditioning (AC) faces low energy efficiency and thermal comfort challenges. This study explores the integration of thermal energy storage (TES) containing a phase change material (PCM) with a conventional AC unit (PCM-AC) to …
Learn MoreTheoretically, there are two advantages over TV: first, the airflow from underside air supply inlet could directly cool the passenger zone, and improve human …
Learn MoreThe energy consumption of air conditioning systems in Beijing subway stations has been explored; however, only the COP, SCOP, and EER of the VAC systems in ten subway stations were analyzed, and ...
Learn MoreThis paper presents the economic performance evaluation of a novel solar-assisted absorption air conditioning system integrated with absorption energy storage (AES). The proposed solar-assisted air conditioning system consists of a parabolic trough solar collector (PTC), parallel-flow double-effect water-lithium bromide (H 2 …
Learn Morethis article discusses the subway station ventilation and air conditioning systems of energy. This paper also analyzes the energy-saving potential of the subway …
Learn MoreWherein σ represents the sigmoid activation function, tanh is the hyperbolic tangent activation function, x t indicates the input layer information, h t-1 and h t describes the hidden state information at the previous and current time, respectively, ⊙ is an element-wise multiplication operation (Hadamard Product), W ii, W if, W ig, W io are the weights …
Learn More000â€"000 the door open process in the PSD system, inducing the air-conditioning energy consumption rising in subway ... China Experimental Study on Evolution Characteristics of the Heat Storage of Surrounding Soil in …
Learn MoreIn this research, we use a delay-scenario-based method to evaluate the robustness and energy-efficient performance of the train timetable. Since delay scenarios are generated randomly, let P w denote the corresponding probability that delay scenario w ∈ W takes place and we have ∑ w = 1 W P w = 1.
Learn MoreFig. 10 showed the investigated indoor air temperature under 61 air conditioning terminals and the energy consumption of those terminals. Most of the time the air conditioning terminals were off, and T i remained …
Learn MoreIn order to analyze air conditioner energy conservation of subway station quantitatively, three-dimensional numerical simulations study is conducted by using CFD theory for air …
Learn MoreAir-conditioning systems contribute the most to energy consumption among building equipment. Hence, energy saving for air-conditioning systems would be the essence of reducing building energy consumption. The conventional energy-saving diagnosis method through observation, test, and identification (OTI) has several …
Learn MoreThis review presents the previous works on thermal energy storage used for air conditioning systems and the application of phase change materials (PCMs) in different parts of the air conditioning networks, air distribution network, chilled water network, microencapsulated slurries, thermal power and heat rejection of the absorption …
Learn MoreSchematic diagram of subway air conditioning ducts. The limitations of the paper and future work mainly include: (1) ... Study on airflow organization of energy storage modern tram HVAC system Electtic. Locomotives …
Learn More：. In order to analyze air conditioner energy conservation of subway station quantitatively, three-dimensional numerical simulations study is conducted by using CFD theory for air distribution of subway platform, and the flow field and temperature field of the platform under different environment conditions are obtained.
Learn MoreA comparative study on PCM and ice thermal energy storage tank for air-conditioning systems in office buildings Appl. Therm. Eng., 96 ( 2016 ), pp. 391 - 399 Google Scholar
Learn MorePublished by Elsevi r Ltd. Peer-review under responsibility of the scientific committee of the 9t International C nference on Ap lied Energy. Keywords: subway station ; air conditioning system ; energy consumpti * …
Learn More5 Why It Can Reduce Air Conditioning Costs and Energy Use Off-peak operation Running the chiller at night substantially reduces electrical costs since energy is used off-peak when electric generating facilities are typically under-utilized by 50 percent or more.
Learn MoreAn innovative solution to store cold energy by means of the solidification latent heat of PCMs is presented. The cold storage system is suitable for domestic application (typical in/out primary ...
Learn MoreIn order to improve the performance of thermal energy storage (TES) systems, a multiple phase change material (multi-PCM) based TES unit for use in conventional air-conditioning systems was studied. Three PCMs (PCM-1, PCM-2, and PCM-3) with phase change temperatures of 5.3 °C, 6.5 °C and 10 °C, respectively, were …
Learn MoreThe paper studied the operating characteristics of the ventilation and air conditioning system and the cooling load pattern of the subway station, focusing on the following …
Learn MoreThe air conditioning system constitutes more than half of the total energy demand in hub airport buildings. To enhance the energy efficiency and to enable intelligent energy management, it is vital to build an accurate …
Learn MoreFig. 5 compared outdoor air temperatures and the south surface temperatures of Rooms 1 and 2 with time. As shown in Fig. 5(a), T A-1 and T A-2 exhibited the similar temperature variations over time, which can be attributed to natural convection, and their average temperatures were 27.4 C and 27.9 C, respectively. ...
Learn MoreThe ventilation and air conditioning system in the subway station is the key energy-consuming system. It consumes a large amount of energy every day to provide a comfortable environment for passengers, and it has therefore received increasingly more attention from researchers worldwide.
Learn MoreWith 11 kg of PCMs, energy consumption by the air conditioning system decreases by 10.4 %, and indoor air temperature and relative humidity reduce by 0.5 and 5 %, respectively. Hence, PCM integration ensures a more consistent indoor temperature profile, enhancing occupant comfort and reducing temperature fluctuations.
Learn MoreParameshwaran et al. [28] concluded that the air-conditioning energy-saving potential of passive buildings with latent thermal energy storage systems is about 10–15%. Similarly, the air-conditioning energy savings of buildings with ATES systems are expected to be about 45–55%.
Learn MoreIn this work, the variation law of the ventilation and air conditioning system of a subway station is analyzed from three aspects (energy consumption, load, and temperature) based on field test data, …
Learn MoreThe metro model includes trains, unidirectional substations, energy storage systems (ESSs), and connecting lines that are shown in Fig. 2. Each substation is modeled by an ideal DC voltage source connected in series with a resistance of 6 mΩ/km.
Learn Morethis article discusses the subway station ventilation and air conditioning systems of energy. This paper also analyzes the energy-saving potential of the subway platform. The use of appropriate control strategy can greatly reduce energy consumption of subway station ventilation and air conditioning systems greatly reduce energy …
Learn MoreThe results show that the calculation of energy consumed by air conditioning and ventilation systems varies. Fig. 20 reflects the variety of outcomes, where the AAC building model shows a higher power consumption than the situation of the vernacular building design because of the cooling process or a ventilation system that …
Learn MoreAnalysis of energy-saving for ventilation and air-conditioning system of subway stations with platform screen doors. Ziyi Su Xiaofeng Li
Learn MoreSince London''s first subway line opened in 1863 [[3], [4], [5]], various issues related to thermal and humidity control within stations, ventilation and air conditioning strategies for energy conservation as well as ensuring thermal comfort and health conditions inside,
Learn MoreThe energy consumption of subways in the operation process is relatively large. With the continuous development and expansion of China''s rail construction, the problem of energy saving has become more and more prominent. The air-conditioning system is a large energy-saving potential in the process of subway operation. It is necessary to optimize …
Learn MoreTo achieve sufficient air conditioning of large buildings, reasonable air distribution in indoor spaces is an effective method for creating stratified air conditioning. Therefore, optimizing the air distribution in large buildings is extremely significant. In this paper, we expound on a new method for air distribution design and optimization based on …
Learn MoreAbstract: Energy-saving research in rail transport air-conditioning system has an important position, because air conditioning system of subway station is a multi-input and multiple …
Learn MoreSubway stations are public spaces that requireheating, ventilation, and air conditioning (HVAC) to maintain a comfortable indoor environment for passengers. Identifying energy …
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