International Journal of Energy Technology and Policy (Int J Energ Tech Pol )

Description

The IJETP is a vehicle to provide a refereed and authoritative source of information in the field of energy technology and policy. The objective of the IJETP is to further the development of this dynamic and innovative topic: to disseminate knowledge and provide a global forum for professionals in the field to learn from each other's work. IJETP also aims to establish channels of communication between relevant academics and research experts, policy makers and executives in industry, commerce and investment institutions.

  • Impact factor
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  • 5-year impact
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  • Website
    International Journal of Energy Technology and Policy website
  • Other titles
    International journal of energy technology and policy (Online), Energy technology and policy, IJEPT
  • ISSN
    1741-508X
  • OCLC
    60616636
  • Material type
    Document, Periodical, Internet resource
  • Document type
    Internet Resource, Computer File, Journal / Magazine / Newspaper

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: An artificial neural network (ANN) model was developed to assess the energy input-output prediction in dairy farms of Iran. Data used were culled from 50 randomly selected farms using face to face questionnaire approach. The energy input-output analysis was carried out for the parameters of ANN model. Based on performance measures, single hidden layers with 16 neurons in the hidden layer were finally selected as the best configuration for predicting energy output. In this study, we calculated total energy input and output to be 53,102 and 58,315 MJ cow<sup align="right"> −1 </sup>, respectively. The predicted values of the best and optimal structure of ANN model were correlated well with actual values with coefficient of determination (R<sup align="right"> 2 </sup>) of 0.88 and root mean square error (RMSE) of 0.015. Therefore, since the ANN model can accurately predict the derived energy output of milk production system, it could be alternated by other predicting approaches such as regression.
    International Journal of Energy Technology and Policy 01/2013; 9(1).
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    ABSTRACT: Short term measure for dealing with energy crisis is reducing consumption by: 1) improving the efficiency of all energy consuming machines; 2) eliminating the wasteful use of energy. Renewable sources of energy such as solar, wind, tidal, waves, etc., do make a significant contribution to demand for energy but they are unlikely to meet the ever increasing consumption. Long term measures may require exploitation of hydrogen to replace fossil fuels or to opt for nuclear energy. Since 3/4 of the earth is covered with water, we have inexhaustible source of hydrogen to meet our energy needs. The purpose of this paper is to promote public awareness of the methods of large scale generation of electricity and to examine critically the pros and cons of both short term and long term measures.
    International Journal of Energy Technology and Policy 01/2013; 8(3).
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    ABSTRACT: This paper presents a new method for accommodating loop flow in the process of transmission loss allocation including a generalised model for the transmission line. The developed line model is similar to the generalised circuit model based on the famous ABCD parameters. The proposed model enables unbundling the active power loss allocated to a node into two components; the first is the loss due to active power flow and the second is the loss due to reactive power flow. The same is done for the reactive power loss. Such separation of loss components makes loss allocation more transparent and explainable. In the presence of a loop flow, the power flow tracing algorithm gets faced with some nodes remaining in the system where no one of it is a pure sink node and hence gets stuck. The paper describes a method for loss allocation in the presence of loop flows based on signal flow graph manipulation techniques.
    International Journal of Energy Technology and Policy 01/2012; 8(2):128-158.
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    ABSTRACT: Cooling system with low capacity utilising solar power can be widely used for remote and rural cooling applications. This paper describes the trend of solar insolation for a period of one year at Tiruvannamalai town, a district capital in Tamil Nadu state, South India which is geographically located at latitude 12.229 N, longitude 79.076 E. The performance of a compact solar refrigeration system attached with micro spray nozzles in the evaporator chamber during specified period was studied.
    International Journal of Energy Technology and Policy 01/2011; 7(5):407-416.
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    ABSTRACT: Lithium Bromide (LiBr) strong solution entering the absorber tends to crystallise when the absorber temperature is increased for a fixed evaporating pressure. This is considered the key technical barrier for the development of a LiBr absorption heat pump water heater. There are several approaches to avoid the crystallisation problem, such as chemical crystallisation inhibitors, heat and mass transfer enhancement and thermodynamic cycle modification. This paper investigates and compares two flow configurations of LiBr absorption heat pump water heater to evaluate the allowable operating conditions for each. The simulation results indicated that introducing the process water through the absorber first results in lower absorber temperature and hence less tendency for crystallisation.
    International Journal of Energy Technology and Policy 01/2011; 7(4):393-404.
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    ABSTRACT: The deregulated market is characterised by a number of power producers trying to sell electric power through bilateral agreements or power exchanges. Each utility follows its own pricing strategy and causes more price volatility and makes comparison difficult. This paper presents a general model to determine the optimal Electricity Price (EP) at the generator end point which motivates investment and provides quality power supply to the terminal point. The proposed model is formulated considering peak/off-peak loads, plant load factor, outages, breakdown maintenance, availability of the plant and penalty. The developed model is applied to a typical thermal utility in India to determine the EP.
    International Journal of Energy Technology and Policy 01/2010; 7(3).
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    ABSTRACT: This paper presents a new configuration of a voltage and frequency controller for a stand alone pico hydro power generating system employing an Isolated Asynchronous Generator (IAG). The proposed controller is an Electronic Load Controller (ELC), which consists of a three leg IGBT (Insulated Gate Bipolar Junction Transistor) based Voltage Source Converter (VSC), a DC chopper and an auxiliary load at its DC bus. The neutral terminal for the consumer loads is created using a star delta transformer and the proposed system is modelled and simulated in MATLAB using Simulink and PSB toolboxes.
    International Journal of Energy Technology and Policy 01/2010; 7(3).
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    ABSTRACT: The pot hardware in continuous galvanising lines is prone to failure and needs to be replaced quite frequently which results in considerable loss of production time and high energy consumption. Galvanizing Energy Profiler and Decision Support Systems (GEPDSS) was developed to consider major energy consuming equipment in a typical hot dip continuous line which tracks the current production and energy consumption for up to three different processes. It can simulate a scenario to identify energy, cost, and productivity benefits obtained from energy savings measures and can evaluate the economic desirability of investment in new and improved pot hardware.
    International Journal of Energy Technology and Policy 01/2010; 7(3).
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    ABSTRACT: Installation of capacitor banks proved to be cost effective approach to correct power factor in industrial plants. Optimum capacitance value that contributes to the maximum PF improvement varies from one system to another. Such value depends on the existing electrical system within the industrial plant. This paper provides industrial plants operators an optimisation model to correct and improve PF. This paper is supported by using both MATLAB programming and iteration loop technique. The Jordanian Petroleum Refinery Company is taken as a case study. Results indicate that PF improvement reached almost unity PF for this case, which yields to a reduction in the overall electricity bill.
    International Journal of Energy Technology and Policy 01/2010; 7(3).
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    ABSTRACT: The work presented in the paper is an attempt to evaluate the performance characteristics of a hydrogen–ethanol dual fuel combination with different percentage substitutions of hydrogen (i.e. 0-80% with an increment of 20% by volume) at three different compression ratios of 7:1, 9:1 and 11:1 with varying equivalence ratios. In the present study, experimental investigations have been carried out on a computer interfaced, four-stroke cycle single cylinder compression ignition engine which was converted for spark ignition and carburetion to suit ethanol fuel and a provision was made at the inlet manifold of the engine to induct hydrogen gas. It is found from the present study that the compression ratio of 11:1, equivalence ratio of 0.9 and 60-80% substitution of hydrogen to ethanol is effective in improving the performance of the engine.
    International Journal of Energy Technology and Policy 01/2009; 7(2).
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    ABSTRACT: Indian power industry is undergoing deregulation at a rapid rate. In this transition phase, it is now essential to design the most appropriate market and suitable pricing schemes for the power sector. In this article, a restructured electricity market model for future Indian power market is explained which is based on the institutional frame work – The Indian Electricity Act 2003. The activities of the three-tier market model and the entities involved in the power trading are discussed. Inter-regional and intra-regional congestion management scheme that provide comparable access to all users of the transmission system is proposed. Method for estimation of transmission charges to wheel electrical energy through transmission utilities is also proposed. The method is tested with a five region eleven zone Indian power system model and the results are illustrated.
    International Journal of Energy Technology and Policy 01/2009; 7(1).
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    ABSTRACT: In this paper, a hybrid energy system consisting of biomass, wind, solar photovoltaic (SPV) and battery, is proposed. The sources are operated to deliver energy at optimum efficiency. An optimisation model is developed to supply the available energy to the loads according to the priority. It is also proposed to maintain a fair level of energy storage to meet the peak load demand together with biomass, wind and SPV, during low or no solar radiation periods or during low wind periods. A case study is done using load data collected from three villages (300 km south of Chennai, India). Simulations carried out for one-year period proved the effectiveness of the developed energy management system by satisfying the load demand, non-linear seasonal variations and equipment constraints. Also, with the proposed energy management, it is found that most of the load demand is satisfied, the dumped energy is low and the state of charge of the battery is reasonably in good level. Economic analysis is also carried out and the cost of energy is found to be Rs. 4.20 (US$ 0.1095) per kWh.
    International Journal of Energy Technology and Policy 01/2009; 7(1).
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    ABSTRACT: In this work, a portable solar thermoelectric refrigerator was built in order to help Bedouin people living in remote parts of Oman. The purpose of the study was to demonstrate the feasibility of the implementation of the fabricated solar thermoelectric refrigerator. To this end, a survey questionnaire was conducted in order to evaluate the willingness of the Bedouin to buy the designed unit. Various questions were asked to assess the attitudes and the opinion of Bedouin on various issues related to the refrigerator. These questions mainly concentrated on people's satisfaction with the performance of the conventional refrigerator and their readiness to buy solar-powered refrigerators. The results of the survey indicated that the refrigerator was marketable in the Bedouin Desert. The results of the survey also revealed that the Bedouin people are seriously concerned with environmental issues and want to make a conscious effort to protect the environment.
    International Journal of Energy Technology and Policy 01/2009; 7(1).
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    ABSTRACT: This paper is concerned with improving residential building thermal performance at early design stage. The modification considered in this work was based on reducing external heat gain via sinking the building or part of it. Three scenarios were proposed of which the most acceptable one was thermally analysed. The analysis was based on integrated dynamic simulation of the whole building thermal performance. The external boundary was defined by a climate file of a typical meteorological year for Kuwait. The external convective heat transfer coefficient for all surfaces was determined by means of full scale CFD model of the residential building. Four orientations were considered for the selected building in order to ensure the generality of the outcome of the investigation. For a typical residential building, HVAC annual power conservation equal to 4% was reached by sinking the building by one level.
    International Journal of Energy Technology and Policy 01/2009; 7(1).
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    ABSTRACT: Year-round energy-efficient operation is presented for a two-pipe fan-coil unit air-conditioning system with independent fresh air supply. The study investigated two typical in-room fan-coil operating modes: the dry fan-coil mode in which the room cooling coil does no latent cooling and the wet fan-coil mode in which the room cooling coil is used for dehumidifying a part of moisture from conditioned space. The investigation shows that for a given indoor temperature and relative humidity level, the changeover time of hot-cold water is same in dry fan-coil mode and wet fan-coil mode, but the operating energy consumption required in dry fan-coil mode is more than that required in wet fan-coil mode during the periods of intermediate and summer seasons.
    International Journal of Energy Technology and Policy 01/2009; 7(1).
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    ABSTRACT: Oil and natural gas, Kuwait's only resources of primary energy are also the only revenues from which national income is derived, including foreign exchange. Local energy consumption, excluding feedstock for refineries, estimated to be around 15% is increasing year by year, thus, posing a serious threat to the sustainable growth and financial well being of the country. Energy policy makers in Kuwait recognised this situation well ahead of time and launched a comprehensive energy conservation program to reduce fuel demand and/or supplement sources of energy, such as renewable energy before three decades. This paper highlights the major achievements of this program and presents a series of recommendations for future implementation.
    International Journal of Energy Technology and Policy 01/2009; 7(1).
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    ABSTRACT: In this paper, an improved evolutionary programming (IEP) is proposed to determine the optimal placement of multi-type FACTS devices for simultaneously maximizing the total transfer capability (TTC) and minimizing the total system real power loss of simultaneous power transfers between different control areas in deregulated power system. IEP simultaneously searches for types, locations, and parameters of FACTS devices, real power generations except slack bus in source area, real power loads in sink area, and generation bus voltages. Multi-objective optimal power flow (OPF) with FACTS devices including TTC, system real power loss and penalty functions are used to evaluate the feasible TTC value within real and reactive power generation limits, line flow limits, voltage limits, stability limits, and FACTS devices operation limits. Four types of FACTS devices are included: thyristor-controlled series capacitor (TCSC), thyristor-controlled phase shifter (TCPS), unified power flow controller (UPFC), and static var compensator (SVC). Test results on the test systems indicate that optimally placed optimal power flow with FACTS devices by IEP could enhance the TTC value far more than the other calculation methods, leading to an efficient utilization of transmission systems. Moreover, the proposed method can consider additional voltage and angle stability limits, leading to a more secured system with power transactions.
    International Journal of Energy Technology and Policy 01/2009; 7(2).
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    ABSTRACT: Addressing a key issue in ubiquitous computing and power generation, this paper presents several novel techniques that use the human body itself as an energy resource for power generation and as a biological data network. Particularly focusing on power from human walking, we conducted comprehensive studies determining and comparing critical factors such as efficiencies and power generation levels generated for real generation techniques. Additionally, we present a breakthrough development of low‐cost miniature circuits with significantly improved efficiencies ideal for such generation application. This paper also describes novel systems of ubiquitous personal area networks that exchange digital information by physical touch.
    International Journal of Energy Technology and Policy 01/2009; 7(2).

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