Search all articles

In order to improve the utilization of solar energy and to reduce the energy consumption of an auxiliary heat source, this study investigates a phase change heat storage device for an LPG vaporization system utilizing solar assisted heat pump (DX-SAHPV). In this study, paraffin was chosen as the phase...

In this study, we evaluated the durability and the shrinkage of concrete mixes for constructing nuclear power plant structures, prepared by replacing some of the concrete with diverse admixtures. The experiment variables were the types of admixtures and the replacement rate, and mixing of the two-component...

The design of concrete structures used in nuclear power plants should be suitable to protect against accidents caused by different factors, one of them being temperature. Stress due to temperature can be classified as a secondary stress, which is different from the primary stress caused by an external...

Nanoencapsulated n-octadecane with polyaniline shell as composite thermal energy storage material was synthesized using emulsion polymerization method. In this composite material, the n-octadecane was employed as the core material that is the latent heat storage phase change material (PCM), and the polyaniline...

PCM/FM signal model, this paper presents for the PCM/FM demodulation analysis presented PCM/FM signal characteristics of a new method -WVD law, and PCM/FM signal to be analyzed under different noise simulation, the results show , PCM/FM is a very effective method WVD analysis.

Using phase change material (PCM) as an energy storage medium is one of the most efficient ways of storing thermal energy. An important organic PCM is paraffin. There are a lot of advantages of paraffin, but an undesirable property of paraffin wax is its low thermal conductivity. The main methods to...

Abandoning the constraint conditions of memberships in traditional fuzzy clustering algorithms, such as Fuzzy C-Means (FCM), Possibilistic Fuzzy c-Means (PCM) is more robust in dealing with noise and outliers. A small amount of labeled patterns guiding the clustering process are easy to be obtained in...

With the improvement of China's comprehensive national strength, the process of internationalization of higher education has been accelerating and the scale has been expanding. The key to the success or failure of the clinical medical students education lies in the quality of education, so it is very...

Since the rise in the 1960s, ESP is welcomed by more and more students and linguists at all ages. EPS teaching theory developed rapidly in the world, but with the growing popularity of ESP in China, now also comes an important period which ESP theory in various fields of education. It has a certain size...

In this paper, the DSTFT algorithm is optimized from the point of view of improving system demodulation speed. For the sliding windowing process, this paper gives two fast implementation schemes of DSTFT - recursive and code-sliding. The recursive algorithm of rectangular window and all - pole window...

To address the “memory wall” problem that limits the computing power of processors due to the traditional von Neumann architecture’s separation of storage and computation, the Processing-in-Memory architecture, which integrates storage and computation, has become a research hotspot in the current new...

Covid-19 pandemic have halted student creativity and innovation programs in SMA Negeri 1 Krian. The existence of a community service program initiated by the State University of Surabaya aims to revive the vacuum of digital works creation and production in SMA Negeri 1 Krian. The two activities that...

This study focuses on development of corn-oil ester and tap water mixtures as novel solid-liquid phase change material (PCM) candidates for low temperature refrigeration applications with product temperature between -20 °C and -10 °C. Thermal properties of both tap water and its mixture with corn-oil...

This paper presents the preparation for phase change materials(PCM) with different phase change temperature for use in refrigerated transport equipment. The optimal preparation condition of HSD-1 as the PCM was confirmed. The thermo-physical properties of the modified HSD-1 were investigated by cooling...

This document explains and demonstrates how to prepare your camera-ready manuscript for Trans Tech Publications. Digital communication is a very important technology in modern multimedia technology, it makes up the defect analog communication many, many, but in digital communication, signal attenuation...

There are many reasons for the high water temperature of the engine, such as cooling fan not working, fan control module circuit failure, insufficient cooling medium and PCM failure. Primarily based on the analysis of the engine failure in this paper, the reasons for the failures were found out, and...

Glass curtain wall has received widespread attention because of architectural aesthetics that people persistent pursuit. But using glass curtain wall can bring the sharp increase of building energy consumption. For today's situation of energy scarcity, it is important to find a way to improve energy...

The present study investigated the performance of the solar air heater that is having the rotating spiral shape baffles as turbulator for diminishing the thermal boundary layer and paraffin wax as PCM i.e., SAH1 for better thermal energy retentions. The system performance was compared with the conventional...

This study presents the design and construction of a portable cooler box prototype based on green technology, utilizing Bio-PCM from Virgin Coconut Oil (VCO) as a thermal energy storage system. A thermoelectric cooling system is used to achieve high energy efficiency without conventional refrigerants...

The concept of good management in managing the Muhammadiyah business charity is important to do, because the task of managing and developing a charity business is not only the task of the head of AUM but it is the job of the Persyarikatan leadership where the business charity was founded. The reality...

The aim of this study is to investigate the experimental analysis of the thermal characteritics of a thermal energy storage (TES) unit that combines both sensible and latent heat stored in a bed. A TES unit is created, constructed, and integrated with a constant temperature bath to evaluate the functioning of the storage unit....

Concrete exhibits low thermal conductivity due to its inherent material properties, enabling it to trap and retain heat for extended periods. Its high thermal mass and moderate specific heat capacity slow heat release, creating cooling challenges, particularly in urban areas of Bangladesh during summer....

This paper mainly linked Lianliangou website as a case, simply introduces Lianliangou website platform and its subordinate Hangzhou huantuo Trading Co. Ltd, to the actual data, analyzes the operation model, profit model, Lianliangou website marketing strategy, management pattern, and on the basis of...

The low thermal conductivity of phase change material (PCM) is the main resistance of heat transfer in latent storage system. Characterization of melting process in a PCM-based heat sink with plate fin type thermal conductivity enhancers is numerically studied in this paper. Detailed parametric investigations...

The authoritative world universities ranking institutions take the comprehensive strength of universities as the evaluation criterion and adopt data collection and comprehensive assessment on a global scale. The official website of a university is an important carrier of information about the university,...

We propose shiny analysis framework accompanied with makeup deterioration using normalized facial images(MaVIC and the corresponding makeup-deteriorated data sets). These images are analyzed and reconstructed based on principal component analysis(PCA) and then the differential ones between the reconstruction...

Facial paralysis is a common clinical condition occurring in the rate 20 to 25 patients per 100,000 people per year. An objective quantitative tool to support medical diagnostics is necessary. This paper proposes a robust method that decomposes the images into multi frequencies-space domain, and then...

To study the influences of phase change material (PCM) microcapsules in the garment on human thermal responses, a mathematical model is developed. The improved Stolwijk’s model is used to simulate human thermo-regulatory process, and the coupled heat and moisture transfer including the moisture sorption...

An EES-based thermodynamic model was established to evaluate the temperature and energy performances of an on-grid bio-PCM solar cold storage system. The bio-PCM solar cold storage system comprises a 3.1 kWp monocrystalline solar PV integrated with a refrigeration system using R290 refrigerant. Its solar...

In this paper, we propose a feature extraction method, which subdivides feature vectors into three frequency regions of 300-1000Hz, 1000-2000Hz, and 2000-3000Hz. The range and mean of intensity are extracted for each frequency region. By so doing, we can compensate the defect of increasing the intensity...

The problem questions used in the physics learning assessment process do not only require the ability of students to apply concepts only in solving problems. But more than that, these questions measure how the concept can be applied in various situations, and how students make sense in solving the problems....

The study evaluates the thermal performance of a packed bed TES system that integrates both sensible and latent heat storage using solar energy as the heat source. A cylindrical, insulated storage tank containing spherical capsules containing phase change materials (PCMs), particularly stearic acid and...

The purpose of this activity is to realize a superior and competitive rotation management program. Partners in this activity are Muhammadiyah Schools in Sukaramai and PCM Tegal Sari II PCM. The existence of Muhammadiyah schools is equipped by school libraries as a means of supporting the success of student...

The aims of this research is to develop a two-tier test instrument to diagnose students’ conceptual understanding abilities and knowing the level of student misconceptions on the topic of simple harmonic motion. The method in this research is 4D Research and Development (Define, Design, Develop, and...

A prototype of an industrial PCM heat storage has been built and tested. The module is designed for use in an industrial steam system. The module has a storage capacity of 4 kWh (14 MJ) and a power of about 8 kW, allowing for charge and discharge times of 30 min. As PCM, adipic acid has been used (melting...

When the spacecraft is moving at high speed, the signal obtained by the control station always exists Doppler shift, which is reflected in the DQPSK signal. In order to make the digital signal demodulate the correct information, this paper analyzes the influence of Doppler on demodulation, and studies...

The aim of this study was to analyze the heat transform models of phase change diving suit on the basis of the steady-heat transform theory, and determined the suitable melting temperature and latent heat of phase change materials impregnated in different suits. An insulation performance test was conducted...

Uzbekistan’s drastically changing continental climate and rapidly rising residential energy consumption mean that structures that have demand-side flexibility to facilitate the incorporation of renewable energy are needed shortly. The present research assesses the energy flexibility of residential buildings...

Physics deals with a lot of quantities that have size and direction and thus require a mathematical representation to describe it. So that in the context of physics learning cannot be separated from the application of mathematical representation. This research aims to: 1) determine the feasibility of...

Making accurate and scientific decisions is one of the high-level thinking skills that students need in the problem-solving process. This skill refers to the practice of thinking to make decisions based on certain considerations. This consideration is interpreted as the skill of students using their...

Heat flux is a key parameter to characterize energy transport process in the fields of energy, metallurgy and aerospace. Traditional heat flux sensor can bear load and guarantee normal work of instrument through heat capacity or air cooling and water cooling system of own materials. However, application...

The article presents a research, conducted by the author, whose object is to build an optimal model of monetization of digital products. The research examined a variety of online services for monetization and promotion of digital products, detected their advantages and disadvantages, and also evaluated...

The paper presents the results of the study of polymer composite materials (PCM) based on polytetrafluoroethylene (PTFE) filled with carbon fibers (CF) and ultrafine polytetrafluoroethylene (UPTFE). Physic-mechanical and tribological characteristics of PTFE based polymer composite materials containing...

The past five years has seen a dramatic rise of online Chinese fantasy and kung fu novels (hereafter called Chinese fantasy novels), or xianxia novels, both for domestic readers and readers overseas. The novels, characterized by their Chinese flavor, are so popular among foreigners that many English...

To maintain the ideal battery temperature, the electric car battery cooling system is very important. Battery life will decrease if the battery is often operated at high temperatures. The battery cooling system in electric cars must be made to keep the battery from overheating. Battery performance and...

Since 2021, the Metaverse has witnessed explosive development. With the investment of capital, the application scenarios of the Metaverse are gradually enriched. This paper aims to improve the attraction, economic power and international influence of Busan Citizen Park by integrating it with the Metaverse....

With the problem of environmental pollution and energy shortage is becoming increasingly serious, researches on electric vehicle (EV) are getting more and more attention. As an important energy source of EV, the working status of power battery will affect the performance of the vehicle. The performance...

Cooling systems such as split AC are currently one of the devices widely used in commercial and residential buildings. However, high energy consumption, especially during peak loads, is a major problem that has a direct impact on energy efficiency and operational costs. Therefore, innovation is needed...

In battlefield, it is very difficult to consider all conditions such as various battlefield environments & factors. Thus, Friendly forces should satisfy battle tactics, weapon systems and other multiple conditions by responding immediately to battlefield situations. Therefore, in order to suggest the...

The internet through digital marketing has changed the way goods and services are informed, packaged, promoted and sold to the public. Consumers, in this case tourists, perceive digital content spread over the internet as a reliable source of information. They search for information via internet to make...