scholarly journals The rationale for choosing a pigsty heating system

2019 ◽  
pp. 117-124
Author(s):  
N. Boltianska ◽  
O. Boltyanski
Keyword(s):  
Heat Supply ◽  
System Analysis ◽  
Ventilation System ◽  
Heating System ◽  
Infrared Heating ◽  
Heating Systems ◽  
Advantages And Disadvantages ◽  
Pig Farm ◽  
Labor Resources ◽  
Selection Of

Purpose. To analyze the types of heating systems for heating a pig farm. Determine the factors that have a significant impact on the choice of heating and ventilation systems of the pig farm and justify the choice of the heating system for pigsties. Methods. To justify the choice of a pigsty heating system, the methods of comparative and system analysis, synthesis, scientific generalizations and the method of argumentation were used. Results. The types of heating systems for heating a pig farm are analyzed. The share of costs for heat supply and microclimate in the total costs of fuel and energy resources in pig holding facilities is given. The necessary temperature regime for sows, piglets weeks from birth and pigs for fattening was determined. The factors that have a significant influence on the selection of the system of heating and ventilation of the pig farm are determined. Conclusions. In addition to the room configuration, the choice of a heating system is significantly affected by the presence of various energy sources in the household, the equipment used and the availability of labor resources. Heating must be synchronized with the ventilation system. Given the energy efficiency and the absence of drafts in the growing sections, it is advisable to use an infrared type of heating. An effective heating system for heating a room with weaned pigs is a “warm” floor, which is advisable to use with infrared heaters. Keywords: pigsty, microclimate, heat supply, heating system, ventilation system, advantages and disadvantages, infrared heating, coolant.

scholarly journals Analysis of procedures for heating, ventilation and air conditioning for transfer to low-temperature heat supply

2019 ◽  
pp. 8-8
Author(s):  
Stanislav Chicherin
Keyword(s):  
Water Supply ◽  
Heat Supply ◽  
Heating System ◽  
Heat Energy ◽  
Hot Water ◽  
Heat Consumption ◽  
High Quality ◽  
Hot Water Supply ◽  
Supply Systems ◽  
Selection Of

Introduction. Renovation of housing stock supposes construction of new buildings, where the main utilities consuming heat energy will be heating and hot water supply (HWS) systems. Under such conditions the task of heat consumption reduction by transfer to low-temperature and use of the associated procedures is relevant. Materials and Methods. Research was performed on the basis of residential and administration buildings designed within the whole Russia, the facilities were selected based on the year of putting into operation and their purpose. The source of data concerning buildings became documents included into the scope of the design and detailed documentation: plans, drawings and explanatory notes. As meeting the demands of hot water supply makes the main contribution to daily nonuniformities of heat energy consumption, the attention was paid to equipment of hot water supply systems. For calculations, the commercial product of Microsoft Office Excel 2010 was used. Results. During selection of roof boiler house as a source of heat supply increase in consumption of equivalent fuel in relation to the variant of connection to heat power plant operating on solid fuel by 187,314 tons of fuel oil equivalent is possible. General refusal from power-and-heat generation complicates operation of large district heat supply systems. The design parameters of coolant in building heating system differ from project to project: from 95/70 °С, used everywhere till the beginning of the XXI century, up to 90/65 °С corresponding to existing practice of designing or 80/60 °С as at the facility in Sevastopol. Reduction of design temperatures by 5 % is insufficient to decrease general heat consumption of the building. Reduction of heat consumption is explained by selection of advanced materials for pipeline heat insulation. Use of automation diagrams for heat points on the basis of regulator ECL Comfort 310 contributes to improvement of hydraulic control for heating systems, however, concealed automation results in violation of high-quality mode for heat network control and decrease of coolant parameters on adjacent (often non-automated) consumers. Conclusions. Supplement of central high-quality control by local constant temperature/variable flow control at individual heat unit and installation of temperature controllers on heating radiators with mechanical thermostatic head have potential for reduction of the heat energy volume used ineffectively. Increase in level of controllability for heating system together with cheaper and responsive automation systems are basic conditions for increase in quality of heat supply in future.

scholarly journals Heat Supply Comparison in a Single-Family House with Radiator and Floor Heating Systems

Buildings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 5
Author(s):  
Amir Vadiee ◽  
Ambrose Dodoo ◽  
Elaheh Jalilzadehazhari
Keyword(s):  
Heat Supply ◽  
Heating System ◽  
Heat Losses ◽  
Cold Climate ◽  
Single Family ◽  
Heating Systems ◽  
Family House ◽  
Flooring Material ◽  
Floor Heating

Floor heating and radiators are two of the most common types of hydronic heating systems used for space heating in single-family houses in cold climate regions. Notwithstanding, there are few comparative studies on indoor temperature distribution and system cost evaluations for radiators and floor heating. Furthermore, there are no aligned outcomes in terms of total heat supply for a single-family house with radiators or floor heating. In this study, the effect of building energy efficiency level and construction type, including flooring material, on the supply heating demand and transmission heat losses were studied for both radiator and floor heating systems. For this purpose, a single-family house located in Växjö, Sweden, was modeled as a case study. The heating demand was supplied with a district heating system with a similar supply temperature at 45 °C for both the radiator and floor heating system. A sensitivity analysis was also performed to assess the effect of flooring configurations on the annual supply heating demand for both conventional and passive versions of the case-study building. The results showed that the radiator-integrated building had a lower supply heating demand in comparison with the floor heating-integrated buildings. Based on the sensitivity studies, the flooring material did not have a significant influence on the supply heating demand and on the transmission heat losses in the case of the radiators. The supply heating demand was only reduced up to 3% if the flooring U-value was improved by 60%. The results also showed that refurbishment in a standard conventional building with a radiator heating system based on the passive criteria led to a 58% annual energy savings, while this amount for a building with a floor heating system was approximately 49%.

scholarly journals Prospective increase in the heat pump’s efficiency through arrangement in a three-temperature system

2019 ◽  
Vol 11 (10) ◽  
pp. 168781401988098
Author(s):  
Tomáš Stejskal ◽  
Jozef Svetlík ◽  
Peter Demeč ◽  
Adam Žilinský ◽  
Juraj Kováč
Keyword(s):  
Heat Pump ◽  
Heat Engine ◽  
Heating System ◽  
Stirling Engine ◽  
Thermal Source ◽  
Heating Systems ◽  
Economic Issues ◽  
Advantages And Disadvantages ◽  
System A ◽  
Temperature Heating

Analysis of three-temperature heating system has revealed the apparent advantages and disadvantages that the combination of thermodynamic systems has in future development with respect to environmental and economic issues. Three-temperature heating systems consist of a heat engine and a heat pump, thus enabling maximum use of the primary thermal source for heating buildings. It seems that the combination of a Stirling engine, or a similar heat drive, with a heat pump is suitable. In order to analyse the effectiveness of such a system, a comprehensive calculation procedure is used as follows: its basis lies in accounting for all types of energy and their relationship to the original natural resource. The present study aims to point out that the combination of a Stirling engine and a heat pump is a useful solution due to the fact that it has the most favourable resultant economic impact in comparison to the use of a diesel, four-stroke gas or the most commonly used electric drive.

scholarly journals Optimal Hierarchical Decision-Making for Heat Source Selection of District Heating Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-10
Author(s):  
Fang Fang ◽  
Nan Wang
Keyword(s):  
Decision Making ◽  
Heat Source ◽  
District Heating ◽  
Heating System ◽  
District Heating System ◽  
Heating Systems ◽  
Source Selection ◽  
District Heating Systems ◽  
Comprehensive Benefit ◽  
Selection Of

With the rapid development of China’s urbanization, the proportion between the heating consumption and the energy consumption of the whole society keeps rising in recent years. For a district heating system, the selection of the heat source makes significant impact on the energy efficiency and the pollutant emissions. By integrating the methods of the Analytic Hierarchy Process (AHP) and the Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE), a multiple-attribute decision-making scheme for the heat source selection of district heating systems is proposed in this paper. As a core part of this scheme, a comprehensive benefit index with hierarchical parallel structure is constructed. The economic benefit, environment benefit, and technical benefit can be reflected with a certain percentage in the comprehensive benefit index. To test the efficiency of the proposed scheme, a case study for a large-scale district heating system in Beijing is carried out, where five kinds of heat sources (water source heat pump, ground source heat pump, gas-fired boiler, coal-fired boiler, and oil-fired boiler) are taken into account. The analysis and instructions for the final sorting result are also demonstrated.

scholarly journals Selection of floor heating by MCDA method

2020 ◽  
Vol 18 (3) ◽  
pp. 041-050
Author(s):  
Jacek Karpiesiuk
Keyword(s):  
Mathematical Analysis ◽  
Evaluation Criteria ◽  
Aluminum Foil ◽  
Heating System ◽  
Multiple Criteria Decision Analysis ◽  
Heating Systems ◽  
Construction Market ◽  
Detached House ◽  
Floor Heating ◽  
Selection Of

Using Multiple-criteria Decision Analysis (MCDA), the most favorable floor heating system of a detached house has been selected. The analysis also includes an assessment of the performance of this type of heating on small surfaces (up to 20m2). The choice was made among eight heating variants, adopting various systems available on the construction market powered by water or electricity, including traditional with "wet" screeds, "dry" screeds and lightweight floor heating systems without Screeds. From the set of 14 evaluation criteria, the eight most important ones were identified. Using the summed corrected indicator of mathematical analysis, it was assessed that the best variant is a lightweight floor water heating system on a reactive adhesive without screeds with aluminum foil.

scholarly journals Innovative Solutions in the Process of Heat Supply

2019 ◽  
Vol 1 (1) ◽  
pp. 155-161
Author(s):  
Aleksandra Wrzalik
Keyword(s):  
Development Strategy ◽  
Heat Supply ◽  
Heating System ◽  
The European Union ◽  
Transmission Losses ◽  
The Sustainable Development ◽  
Heating Systems ◽  
Innovative Solutions ◽  
Energy Economy ◽  
Modern Technologies

Abstract Heat supply is one of the most important sectors of the country's energy economy. Widely understood heating secures both: the living needs of society and industrial recipients. Modern heating systems should guarantee reliability of heat supply while limiting energy consumption and transmission losses. It results from the sustainable development strategy, implemented in the European Union, which is based on the development of renewable energy and improvement of energy efficiency. As a consequence of such an energy policy, investments and innovations are implemented in the two areas of the heating sector: technical infrastructure and management of the heat generation and transmission system. The article discusses legal as well as technical and economic conditions for the operation of heating companies, including aspects of energy security. The characteristics of the heat market in Poland and investment expenditures related to the modernisation of infrastructure and environmental protection has been presented in it. Selected innovations used in the process of heat production and supply have been described as well as modern technologies and IT tools that improve management of heating system. The possibilities and limitations of innovative heating development have also been indicted here.

scholarly journals Development Features of Heat Power Industry Legislation in Russia

2019 ◽  
Vol 23 (2) ◽  
pp. 22-35 ◽  
Author(s):  
Ekaterina Mednikova ◽  
Valery Stennikov ◽  
Ivan Postnikov ◽  
Andrey Penkovskii
Keyword(s):  
Heat Supply ◽  
National Policy ◽  
Heating System ◽  
Considerable Change ◽  
Efficient Operation ◽  
Heating Systems ◽  
Heat Networks ◽  
Investment Projects ◽  
Generating Equipment

Abstract In Russia, the legislative support for the construction and operation of heating systems is permanently developing and improving. The Federal law “On heat supply” adopted in 2010 is the basic and most important document that regulates the work of heating systems. Moreover, the country has more than 10 additional documents that regulate this industry, and a great number of documents that establish rules for building and operating energy systems. The paper presents the main documents that regulate the heat supply industry in the Russian Federation, and a brief description of the main stages of heating system life cycle and problems solved in each of them. Despite the national policy of energy conservation and energy efficiency enhancement, there are still problems related to heat supply management due to large extension, complexity and a variety of types and structures of the systems. The main cause of the poor heat supply efficiency in Russia is explained by a considerable change in the structure of heat loads that has occurred of late years, a decrease in the loading of the main generating equipment and heat networks, which amid other things is fostered by an increasing wear of the systems. Upgrading of generating capacities and heat networks is considered in the framework of long-term investment projects for their modernization and expansion. The obtained solutions are reflected in the Schemes of urban heat supply. This paper proposes solutions aimed at enhancing the effectiveness of decisions made in the field of heat supply. It formulates the proposals on organization and regulation of the activities of all the participants in heat supply in the stage of long-term planning of heating system expansion, because well-founded and rational planning of construction and expansion of the systems is a basis for their efficient operation.

EQUALIZATION OF HEAT-TRANSFER AGENT TEMPERATURE EXPANSION IN HEATING SYSTEM WITH THE USE OF REGULATING AND SAFETY VALVES

2016 ◽  
Vol 6 (4) ◽  
pp. 36-39
Author(s):  
Gennady I. TITOV ◽  
Yulia E. DEMINA ◽  
Danila V. ZELENTSOV
Keyword(s):  
Heat Transfer ◽  
Heat Supply ◽  
Heating System ◽  
Capital Cost ◽  
Heat Transfer Agent ◽  
Heat Rejection ◽  
Heating Systems ◽  
Temperature Expansion

The scheme of equalization of heat-transfer agent temperature expansion in independent heating system without temperature tank is viewed. To equalize heat-transfer agent temperature expansion regulating and safety valves are used in this scheme instead of temperature tank. The valves provide heat supply and heat rejection in- and out of heating system. The proposed scheme permits to equalize heat-transfer agent temperature expansion in heating systems with a large amount of heattransfer agent and with minimal capital cost.

scholarly journals Demand-oriented Hydronic Heating System and the Active One-pipe System Design Tool

2019 ◽  
Vol 111 ◽  
pp. 01091 ◽  
Author(s):  
Zlevor Ondřej ◽  
Dostál Jiří
Keyword(s):  
Heating System ◽  
Design Tool ◽  
Demand And Supply ◽  
Heating Systems ◽  
Pipe System ◽  
Advantages And Disadvantages ◽  
Current State ◽  
Historical Outline ◽  
Air Handling Units ◽  
The One

This article is focused on hydronic heating systems that use pumps as the control actuators instead of valves. Those systems are called “demand-oriented”, while the systems being controlled by valves are called “supply-oriented”. Reader gets an overview of various versions of both demand- and supply-oriented systems using both one- and two-pipe topologies, supported by a brief historical outline, current state of the art and basic advantages and disadvantages of the introduced hydronic systems. The special interest is given to the one-pipe demand-oriented systems, which offer several benefits in comparison with nowadays widespread systems (mainly supply-oriented two-pipe), however, the computation complexity of design of such systems inhibits their more frequent utilization. This paper also introduces a computation and optimization tool to help with the design of one-pipe demand oriented hydronic heating systems, which eases the designer to size the AHU (Air Handling Units) and to set the mass flows of fluid in the system branches.

Flow Assurance With Water Heated Pipe-in-Pipe in Fields With High Gas Oil Ratio and High Wax Appearance Temperature

2013 ◽  
Author(s):  
Leandro P. Basilio ◽  
Fabiano G. Drumond ◽  
Pedro L. F. Mendes ◽  
Alessandro França ◽  
Marcílio P. Prado ◽  
...  
Keyword(s):  
Water Injection ◽  
Temperature Drop ◽  
Heating System ◽  
Production Unit ◽  
Injection System ◽  
Gas Oil ◽  
Heating Systems ◽  
Advantages And Disadvantages ◽  
Heated Water ◽  
Wax Appearance Temperature

The development of pre-salt fields in the Santos Basin has presented a plenty of technological challenges, which include the production of fluids with high values of GOR (Gas Oil Ratio) and high values of WAT (Wax Appearance Temperature). To avoid the wax deposition, it is absolutely imperative handling the temperature by insulation and/or heating. If in one hand the production system thermal insulation minimizes the heat losses to the environment, on the other hand the cooling due the thermodynamic effect of gas expansion is inevitable, mainly in fields with high GOR values. To mitigate the problem of temperature drop, mainly in the risers where the expansion effects are pronounced, various heating systems for subsea pipelines have been studied by PETROBRAS. In parallel to these studies, it was noted that the design philosophy of the offshore production units for the pre-salt fields have indicated the use of turbo–generators to supply electrical power to the production unit, leading to the opportunity of using the generated super heated gases, originally discharged into the atmosphere, in order to feed the riser heating systems based on heated fluids circulation. Studies of heat exchange performed indicated a great potential for the risers heating by the flow of heated water through the annular of a Pipe-in-Pipe riser, by using a WHRU (Waste Heat Recovery Unit) to recover the power discharged into the atmosphere from the turbo–generators. It was identified the possibility of heating Pipe-in-Pipe risers by circulating heated fresh water in a closed loop with water return to the production unit, or by coupling the riser heating system with the water injection system, using all the facilities for treatment and pumping of water injection. This paper aims to describe the methodology considered in the development of a conceptual design of a heating system for a Pipe-in-Pipe riser, by the flow of heated water in the annular, in a Free Standing Hybrid Riser configuration. The paper will also present the characteristics associated with the two possibilities of heated water circuit, as well as advantages and disadvantages of each system, and the aspects related to subsea production layout.

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