scholarly journals Flowline with Resistive Electric Heating System

Author(s):  
Alexander Pavlov ◽  
Igor Plohov

The article deals with electric heating systems applied in flowlines for providing their continued operation in wintertime. The problem of obtaining a given distribution of heat output along the length of the pipeline with electric heating system has been solved. It allows to maintain the same temperature sections being in different environments. As the object of investigation a polymer tube with an integrated electrical heating is chosen.

2018 ◽  
Vol 64 ◽  
pp. 07001
Author(s):  
D. Kerr William ◽  
M. Laverty David ◽  
J. Best Robert

This paper shows the effect on household greenhouse gas emissions if standalone or supplementary electric heating was to replace conventional heating methods, based on the present day electrical grid. While having the capability to improve future grid effectiveness and dynamic stability through the potential incorporation of demand side management (DSM). The All-Ireland system has been used in this paper as an example of a network which has been experiencing a significant increase in renewable generation. To show the potential of the electric heating methods the characteristics of existing domestic heating systems will be discussed, in terms of their heat output against their exhaust emissions (gCO2e/kWh). This will then be compared to that of the grid CO2 Intensity, showing the frequency and duration of the possible emission savings involved when using electricity as a main or supplementary heating source.


1983 ◽  
Vol 105 (4) ◽  
pp. 469-474 ◽  
Author(s):  
M. Koyanagi ◽  
H. Hojo ◽  
A. Nagamune ◽  
J. Ogata

To transport highly viscous crude oil efficiently through pipelines, some electric heating systems have been conventionally used. But they include heating cables or tubes, which are troublesome in submarine pipeline construction. A new electric heating system without a cable has been developed and is applicable to long-distance submarine pipelines. This system has a coaxial steel pipe structure, using the pipes as a heater by applying AC current to this coaxial circuit. In this paper, electromagnetic analysis on this system, experimental study using a 30-m length test pipeline, and mechanical tests on the electric insulating structure of the system are described.


2019 ◽  
Vol 19 (2) ◽  
pp. 48-55
Author(s):  
L. Năstase ◽  
H. Andrei ◽  
E. Lungu ◽  
Veronica Dulea ◽  
E. Diaconu

AbstractThe importance of the heating systems is given both by the quality brought to the social life and from the point of view of pollution. Environmental pollution, global energy crisis as well as global energy policy and our gas heating systems. This motivating reason for the heating system, in terms of their viability and pollution reductions, is the future. In this article a dual heating system is presented, while an electric heating system and one of the gases, the care is coordinated by a monitoring and control system. The operating strategy of the two systems is dictated by an algorithm and a cost optimization function. The use of a dual heating system is the result of comparative results regarding the measurement of the measures and the simulation of the algorithm.


2016 ◽  
Vol 38 (3) ◽  
pp. 269-286
Author(s):  
David Johnston ◽  
David Glew ◽  
Dominic Miles-Shenton ◽  
Moaad Benjaber ◽  
Richard Fitton

In the UK, approximately 16% of the energy use can be attributed to domestic wet central heating systems. Government financial support and advances in technology have led to boilers becoming more efficient and a range of technologies are now available that claim to be able to improve the efficiency of domestic wet central heating systems. One such low cost technology is a passive deaerator. This article presents the results obtained from installing a passive deaerator on the closed loop of a gas-fired wet central heating system, under controlled conditions in the Salford Energy House. The results indicate that although marginally less heat output was required from the boiler when the passive deaerator was operating, these savings are more or less out weighted by the boiler short cycling more frequently. Consequently, the overall reduction is gas consumption achieved by utilising the passive deaerator device is only of the order of 0.5%; this scale of savings may just be a consequence of measurement noise. The implications are that although a marginal benefit may be attributed to these products, if short cycling takes place, then these savings may become insignificant. Practical application: This article describes a test method that has been used to quantify the energy savings that could be achieved by installing a passive deaerator on the closed loop of a wet central heating system. Although the results indicate that the energy savings associated with using such a device are likely to be marginal, the test method described could be used to test a range of other devices that claim to improve the performance of domestic wet central heating systems, to directly compare before and after performance.


Author(s):  
Guohua Shi ◽  
Xutao Zhang ◽  
Songtao Liu ◽  
Weitang Zhang ◽  
Hong Wang

An under-floor electric heating system with superconducting liquid was manufactured. This system can charge heat by using cheap nighttime electricity and discharge the heat stored at daytime, with the merits of decreasing electricity load. In the present work, the operating principle of the system is discussed, and its characteristics are analyzed. In order to study the system’s thermal property, one prototype room with the system and the other room with a heating cable system were set up in Beijing. The experimental results testify the feasibility and comfort of the heating mode and show that it can save 19% electric energy compared with the heating cable system. To analyze the economical efficiency of the system, an economic comparison was made. The result indicates that the system is most economical in comparison with other radiant floor heating systems.


Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6530
Author(s):  
Krzysztof Nowak ◽  
Sławomir Rabczak

In winter, for our own safety, as well as for the comfort of the user, we are obliged to remove or mitigate the defects related to the accumulation of snow and ice on flat surfaces, such as: pavements, stairs, driveways, parking lots, roofs, squares, or sports fields. Snow and ice from these surfaces can be removed by a variety of methods. Chemical, mechanical, or heating methods are most often used. Mechanical and manual methods cannot always be used. They also often do not allow the complete removal of snow and ice from the surface. In chemical methods, the chemicals used can have a negative impact on the environment and the surface itself. Heating external surfaces using electric heating cables or liquid-filled pipes is one of the safest and most effective ways to remove snow and ice from the available methods. The article presents a technical concept of a car park heating system with the use of various heating systems. The main thesis of the work is the possibility of using heating systems to maintain the quality of external parking spaces in winter. The authors tried to prove that it is possible to use a number of heating systems based on commonly known energy carriers for this purpose. The concept was made for the conditions prevailing in Poland. The systems were compared in financial and ecological terms. The following systems were analyzed: electric heating, heating with the use of a heat pump with a vertical ground heat exchanger, and liquid heating with various heat sources (including heat from the district heating network, hard coal boiler, biomass boiler, fuel oil boiler, natural gas boiler). From a cognitive point of view, it was interesting to examine whether the proposed installation with a heat pump is technically feasible and economically and ecologically justified.


2020 ◽  
pp. 65-77
Author(s):  
S. V. Starodubov ◽  
E. A. Zhukova

The article describes modern methods for ensuring the safe operation of technological installations of enterprises and related processes, by introducing industrial electric heating systems based on electric heating cables into their composition. Such systems are widely used in modern industry to protect equipment from freezing, maintain specified technological temperatures, ensure uninterrupted operation, and also to provide a comfortable and safe environment in enterprises reducing (the lost time injures rates by protecting of gutters, roofs and open areas from the negative effects of the environment, such as ice, icicles, snow drifts, etc.)


Author(s):  
Alexander Pavlov ◽  
Igor Plohov ◽  
Sergei Drozdov ◽  
Vadim Smirnov

The objectives of the study are to analyze the transients in heated pipelines using the finite element method and the achievement of reduction of energy losses during transportation of liquids in pipelines with electric heating systems by determining the optimal operating conditions and design parameters of the pipeline and electric heating system


Author(s):  
Miloslav Novotný ◽  
Karel Šuhajda ◽  
Radim Kucera ◽  
Eva Šuhajdová

The aim of this study is to evaluate mutual dependences and significance of the input factors of a heating system for a family house. The input factors which are being most commonly considered are operating costs, acquisition prices on financial return rate, life span of these systems or requirements for maintenance and control. This research is focused on the analysis of three different heating systems in the common detached house; electric heating foils, heat pump and gas boiler. The building itself is evaluated in three variants; with and without a ventilation unit and with adjusted structure composition. To analyse the parameters mentioned above the Promethee method (multicriterial analysis) has been used.


2019 ◽  
Vol 2 (1) ◽  
pp. 29-39 ◽  
Author(s):  
S. G. Konesev ◽  
P. A. Khlyupin

Introduction: the systems of thermal effects on thermo-dependent, viscous and highly viscous liquids under conditions of the Arctic and the Extreme North are considered. Low efficiency and danger of heating systems based on burned hydrocarbons, heated liquids and steam are shown. Electrothermal heating systems used to maintain thermo-dependent fluids in a fluid state are considered. The evaluation of the effectiveness of the application of the most common electrothermal system — heating cables (tapes). The most effective electrothermal system based on induction technologies has been determined. Materials and methods: considered methods of thermal exposure to maintain the fluid properties of thermo-dependent fluids at low extreme temperatures. Results: presents an induction heating system and options for its implementation in the Extreme North and the Arctic. Conclusions: induction heating system to minimize loss of product quality, improve the system performance under changing process conditions, eliminate fire product, to reduce the influence of the human factor.


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