scholarly journals Evaluation of a Prototype for Water Heating in Agroindustries Using Foucault Current

2019 ◽  
Vol 11 (2) ◽  
pp. 217
Author(s):  
Marcos Vinícius Schlichting ◽  
Carlos Eduardo Camargo Nogueira ◽  
Reinaldo Aparecido Baricatti ◽  
Tatiane Martins de Assis ◽  
Jair Antonio Cruz Siqueira
Keyword(s):  
Climate Change ◽  
Lower Energy ◽  
Permanent Magnets ◽  
Mechanical Energy ◽  
Heating System ◽  
Energy Sources ◽  
Water Heating ◽  
Inductive System ◽  
Heating Systems ◽  
Constructive Conditions

Based on the observation of the effects of energy generation on climate change, efforts have been carried out to develop technologies to reduce polluting energy sources. In this context, the rational use and improvement of the efficiency of water heating systems can play an important role, contributing to lower energy consumption. This study evaluated a prototype for water heating for use in agroindustry. The prototype was designed for a possible utilization of mechanical energy in order to change the magnetic flux produced by permanent magnets, generating thermal energy by Foucault currents. This system presented yields of 64.74%, 65.13% and 64.48% for the rotor configurations with six magnets without pole reversal (6ISI), four magnets with reversal (4ICI), and four magnets without reversal (4ISI), respectively. For comparison purposes, a resistive water heating system was also evaluated for the same study conditions, obtaining an efficiency of 89.21%. The proposed inductive system did not present satisfactory results for constructive conditions presented in the study.

Heating Systems

2019 ◽  
pp. 283-307
Author(s):  
Teodora Melania Şoimoşan ◽  
Raluca Andreea Felseghi ◽  
Maria Simona Răboacă ◽  
Constantin Filote
Keyword(s):  
Fossil Fuels ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Heating System ◽  
Operating Conditions ◽  
Optimum Operating ◽  
Energy Sources ◽  
Total Energy Consumption ◽  
Heating Systems ◽  
Heating And Cooling

Within the current context of energy, there are several ways to meet the challenges of durable development. Efficiency in energy use, considered to be the fifth energy source, as well as the use of sustainable energy sources represent critical objectives. Nowadays, almost 50% of the total energy consumption in Europe is consumed by building heating and cooling. The current heat demand is mainly covered by conventional energy—fossil fuels. Consequently, there is a significant growth potential for the use of renewable energy sources (RES) in order to produce heat. One can expect in the near future that the energy systems would include a larger percentage of renewable sources, so the increase of the RES share is one of the main objectives of the thermoenergetic field. This chapter approaches heating system typology, the performance indicators used to asses the hybrid heating systems, and at the same time synthetising the assumptions of ensuring the optimum operating conditions.

Inexpensive Performance Monitoring of Solar Domestic Water Heating Systems

1988 ◽  
Vol 110 (3) ◽  
pp. 187-191 ◽  
Author(s):  
A. M. Clausing
Keyword(s):  
System Performance ◽  
Performance Monitoring ◽  
Heating System ◽  
Solar Heating ◽  
Performance Parameters ◽  
Water Heating ◽  
Domestic Water ◽  
Heating Systems ◽  
Solar Fraction ◽  
The Cost

Performance monitoring is essential in order to conclusively demonstrate the cost effectiveness of a solar heating system. Unfortunately, this “last step” is an aspect which has received little engineering consideration. The monitoring programs in progress typically use instrumentation which is much too expensive and complex for use by individual operators of domestic water heating systems. Hence, few systems are monitored, and the average owner knows little about the performance characteristics of his system. Even malfunctions go undetected. An inexpensive performance monitoring system is described in this paper. It could probably be mass-produced for under 15 dollars or built by the typical homeowner for under 30 dollars. The monitor indicates the instantaneous solar fraction. Overall system performance can be improved with this monitor, since it enables the user to correlate load with the availability of solar heated water. Methodology, performance parameters, and some performance data are presented.

Energy Savings and CO2 Reduction through Solar Water Heater Technology in Sindh Pakistan

2013 ◽  
Vol 315 ◽  
pp. 330-333
Author(s):  
Mujeeb Iqbal Soomro ◽  
Rizwan Ahmed Memon ◽  
Khanji Harijan
Keyword(s):  
Solar Energy ◽  
Energy Savings ◽  
Renewable Energy Sources ◽  
Heating System ◽  
Energy Sources ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
Fuel Savings ◽  
Solar Water Heating System

Pakistan suffers worst energy crises due to unavailability of primary energy sources. One of the solutions to energy problems of Pakistan lies in utilization of renewable energy sources like solar energy. One of the possible uses of solar energy is in the form of water eating. This work explored the availability of solar energy in the Sindh province of Pakistan. Moreover potential fuel savings and reduction in CO2 emission due to the use of solar water heating system is also evaluated. The RETScreen software was used for evaluation of fuel savings and CO2 emission reduction from a solar water heating system. Results show that the annual natural gas supplied to an average household in the three main cities of Sindh i.e., Karachi, Hyderabad and Sukkur could be reduced by 513.5, 409 and 543.5 m3, respectively. Annual reductions in emissions of CO2 for Karachi, Hyderabad and Sukkur were estimated to be 1, 0.8 and 1 tCO2 respectively. It is concluded that the utilization of solar energy for water heating in domestic sector of Sindh Pakistan could save fuel fossil and reduce environmental pollutants that in-turn may help mitigate energy crises in the country.

scholarly journals Renewable Energy Sources in a Post-Socialist Transitional Environment: The Influence of Social Geographic Factors on Potential Utilization of Very Shallow Geothermal Energy within Heating Systems in Small Serbian Town of Ub

2020 ◽  
Vol 10 (8) ◽  
pp. 2739 ◽  
Author(s):  
Nikola Jocić ◽  
Johannes Müller ◽  
Tea Požar ◽  
David Bertermann
Keyword(s):  
Climate Change ◽  
Renewable Energy ◽  
Geothermal Energy ◽  
Renewable Energy Sources ◽  
Heating System ◽  
Energy Sources ◽  
Wide Range ◽  
Energetic Stability ◽  
Shallow Geothermal Energy ◽  
Very Shallow Geothermal Energy

Energetic stability is a precondition for a regular functioning of society and economy. Actual climate change raised the awareness of population and policy makers about the importance of exploited energy sources. Renewable energy sources are revealed as the solution which should satisfy both needs—a need for energetic stability, as well as a need for producing ‘clean’ and ‘sustainable’ energy, and therefore reduce humans’ influence on the climate change. Very shallow geothermal energy offers wide range for utilization, among others for heating and cooling living spaces. This article shows potentials of low temperature heating system networks in a small Serbian town of Ub. In addition to technical possibilities, this article combines geographical and social, as well as political and economic circumstances in the town of Ub, which emerge as a result of a complex (post-socialist) transitional vortex.

scholarly journals Performance Analysis of Photovoltaic Water Heating System

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Tomas Matuska ◽  
Borivoj Sourek
Keyword(s):  
Heating System ◽  
Load Resistance ◽  
Hot Water ◽  
Solar Irradiation ◽  
Water Heating ◽  
Climate Conditions ◽  
Heating Systems ◽  
Point Tracking ◽  
Fixed Load ◽  
Power Point

Performance of solar photovoltaic water heating systems with direct coupling of PV array to DC resistive heating elements has been studied and compared with solar photothermal systems. An analysis of optimum fixed load resistance for different climate conditions has been performed for simple PV heating systems. The optimum value of the fixed load resistance depends on the climate, especially on annual solar irradiation level. Use of maximum power point tracking compared to fixed optimized load resistance increases the annual yield by 20 to 35%. While total annual efficiency of the PV water heating systems in Europe ranges from 10% for PV systems without MPP tracking up to 15% for system with advanced MPP trackers, the efficiency of solar photothermal system for identical hot water load and climate conditions is more than 3 times higher.

scholarly journals Efficiency and cost analysis of a designed in-line water heating system compared to a conventional water heating system in South Africa

2012 ◽  
Vol 23 (3) ◽  
pp. 9-15
Author(s):  
Rupert Gouws ◽  
Estie Le Roux
Keyword(s):  
South Africa ◽  
Energy Consumption ◽  
Cost Analysis ◽  
Water Consumption ◽  
Heating System ◽  
Heat Pumps ◽  
Water Heating ◽  
Heating Systems ◽  
Solar Water Heating ◽  
Temperature And Pressure

In this paper, the authors compares the efficiency and cost of a designed in-line water heating system with a conventional water heating system (geyser) in South Africa. The paper provides an overview on water heating systems and heating elements and provides the typical water consumption required by an average household in South Africa. A summary on the design of the in-line water heating system together with a system cost analysis is provided. The designed in-line water heating system takes the energy consumption, temperature and pressure into account during operation. The energy consumption and cost of the designed in-line water heating system is compared to a conventional water geyser. A cost analysis on the designed in-line water heating system, heat pumps and solar water heating systems are also provided. The energy consumption results showed that the conventional water geyser on average consumes 2.5% more energy to heat one litre of water from 15 °C to 60 °C, than the designed in-line water heating system to supply one litre of water at 60°C.

Research on Solar Water Heating System Design of the High-Rise Residential Buildings Based on Sunlight Simulation

2014 ◽  
Vol 507 ◽  
pp. 486-491
Author(s):  
Yan Qiu Cui ◽  
Bei Zhang ◽  
Shu Feng He
Keyword(s):  
Simulation Analysis ◽  
Residential Buildings ◽  
Heating System ◽  
Water Heating ◽  
Heating Systems ◽  
Solar Water Heating ◽  
Solar Water ◽  
High Rise ◽  
The Common ◽  
Solar Water Heating System

With the acceleration of urbanization, high-rise residential buildings have dominated the present residential buildings in which it has become an irreversible trend to apply the solar water heating systems. Taking the common layout models of the high-rise residential buildings in Jinan City as examples, this paper will create models with the help of sunlight analysis software TSUN8.0 to make a simulation analysis of the valid sunlight hours of the southern facade in these buildings, in the premise that they are in line with the planning requirements, thus we may work out reasonable layout programs for the solar water heating systems application into the facade of high-rise residential buildings under different layouts, which can provide the architects with basis in the design of integrating the buildings with the system.

scholarly journals Estimation of energy efficiency of water heating systems in terms of electricity consumption

2018 ◽  
Vol 251 ◽  
pp. 03024 ◽  
Author(s):  
Sergey Usikov
Keyword(s):  
Energy Efficiency ◽  
Electricity Consumption ◽  
Heating System ◽  
Correct Choice ◽  
Water Heating ◽  
High Quality ◽  
Heating Systems ◽  
Design Documentation ◽  
Operation Characteristics ◽  
Ventilation Systems

The article considers the creation of a regulatory framework in the field of rationing the energy efficiency of water heating systems, and gives recommendations for its creation. In heating systems, there are two main types of energy consumption: electrical and thermal. Electric consumption primarily depends on the correct choice of the pump in the system, its efficiency, as well as the design and operation characteristics of the heating system. Existing methods for assessing energy efficiency, used for ventilation systems, are not applicable for heating systems, since certain conditions must be met for high-quality exploitation. In particular, such conditions include the removal of air from the system and the provision of proportional regulation of the heat transfer of the heating devices. The article gives an example of determining the energy efficiency of a heating system depending on these conditions, and the proposed methodology and methodology applicable for ventilation systems are compared. The considered technique can be applied at carrying out of examination of the design documentation of section “Heating and ventilation”.

scholarly journals New Solar Water Heating System: Safety, Design and Implementation Issues

2018 ◽  
Vol 11 (1) ◽  
pp. 26-32
Author(s):  
Victor D. N. Santos ◽  
Manuel Cerveira ◽  
Fernando Moita
Keyword(s):  
Heating System ◽  
Water Heating ◽  
Heating Systems ◽  
Solar Water Heating ◽  
Water Storage Tank ◽  
Solar Water ◽  
Solar Water Heating System ◽  
Electronic Controller ◽  
Technical Solutions ◽  
System Prototype

Abstract This paper presents a new electronic controller, devoted to solar water heating systems, that implements safety functions to prevent L. pneumophila bacteria outbreaks. The controller uses data retrieved from strategically located probes in order to implement the proposed safety actions. The electronic solution was integrated and validated on a solar system prototype bench that uses real equipment such as collectors, a water storage tank and expansion vessels. Moreover, two particular solar water heating installations were designed devoted to a house family and a nursing home both located on the Mealhada area. The methodology and reported technical solutions in this research could be a practical guide to promote mass market usage of the solar water heating systems in Portugal.

scholarly journals Investigating The Financial Implications Of Alternative Water Heating Systems

2013 ◽  
Vol 12 (7) ◽  
pp. 781 ◽  
Author(s):  
Anri Pretorius ◽  
Surika van Rooyen
Keyword(s):  
South African ◽  
Heating System ◽  
Hot Water ◽  
Water Heating ◽  
Heating Systems ◽  
South Africans ◽  
The Past ◽  
Investment Appraisal ◽  
Electricity Bill ◽  
Alternative Water

Electricity tariffs charged by the South African electricity supplier (Eskom) have sharply increased over the past three years and there is no indication of what to expect in the future with regard to electricity tariffs. Many South Africans are searching for ways to save on their monthly electricity bills by seeking out alternative water heating systems. The purpose of this study is to determine the most financially viable alternative water heating system for a household in South Africa using various investment appraisal techniques and taking into consideration the size of the household. The study found that the five investment options identified in the literature review would all, to some extent, be financially viable to implement within households with high, as well as low, volume hot water consumption. Although some of the water heating systems were found to be more financially viable than others, the conclusion was made that a savings will be generated on the monthly electricity bill no matter what alternative water heating system was to be installed in the place of a conventional geyser.

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