Temperature Control And Investigation Of Parabolic Dish Based Concentrating Solar Power (CSP) In Malaysia Environment

In the Renewable Energy Act 2011, the focus is on solar energy particularly the solar Photovoltaic, whereby the solar thermal, such as the Parabolic Dish Concentrating Solar Power (CSP) is not given enough attention. This could be due to the lack of a thorough investigation of implementing solar CSP in the Malaysia environment. Nowadays, even though many researchers continue to investigate and study about Parabolic Dish based on Concentration Solar Power (CSP), the findings are not conclusive and do not provide accurate evidence and proof on the potential of CSP development in Malaysia. The missing link in the Parabolic Dish Stirling Engine system model is the control systems, which vary the amount of working gas in the Stirling engine. The temperature of the heater in PD system which has been modelled is easily overheated that which will cause damage to the heater material that will lead to low output efficiency, high thermal losses and effect to the lifespan of the PD system. Therefore, the primary aim of this project was to design a control system to maximize output efficiency during a normal operation by maintaining the heater/absorber temperature at the highest safe operating point to prevent excessive range of threshold to avoid damage to the heater material besides carry out a fundamental investigation on solar CSP, by focusing on Parabolic Dish type in the Malaysia environment. Recent literatures which address the CSP were reviewed. The preliminary considerations and basic thermodynamics of the Stirling engine were to derive a model of dish and Stirling engine. According to literature, the PD system achieves the highest solar for electric efficiency and it is small and modular among CSP technologies. The proposed model showed the idea of PD systems with control system model which vary the amount of working gas in the Stirling engine. The control systems were designed using Matlab /Simulink 2012a. Based on the developed linearized model, an improved temperature controller with transient droop characteristic and Mean Pressure Control (MPC) has been proposed. This temperature controller is effective in reducing the temperature that will improve the performance of the PD system. The overall performance of the system improved more than 78% in output power and energy. Besides, the system can improve in term of sensitivity compare with the PD system without compensate. In addition, the system also reduce thermal losses up to 97.6% which shows significant improvement for the output efficiency to the system. The analysis shows that the PD system is feasible in term of technical but not economically feasible. Unless, when levelised tariff of solar thermal is increase more than RM20.2499/kWh by electrical policy similar as photovoltaic, then the PD system is economic feasible in the Malaysia environment at the moment

Sensitivity Analysis and Comparison between 25 kW Parabolic Dish System

Dish-Stirling concentrating solar power systems is an efficient and reliable source of renewable energy. In this paper, the proposed model showed the idea of Parabolic Dish (PD) systems with control system model which vary the amount of working gas in the Stirling engine. The control systems were designed using Matlab /Simulink 2012a. Based on the developed linearized model, an improved temperature controller with transient droop characteristic and Mean Pressure Control (MPC) has been proposed. This temperature controller was effective in reducing the temperature and improving performance of the PD system. The overall performance of the system improved more than 78% in output power and energy. Besides, the system improved in term of sensitivity compared with the PD system without compensated. In addition, thermal losses decreased to 97.6% which is directly have significant improvement for the output efficiency to the system. The analysis shows that the PD system is feasible in term of technical but not economically feasible in the Malaysia environment

A Review of Parabolic Dish-Stirling Engine System Based on Concentrating Solar Power

A solar thermal technology which is also known as concentrating solar power (CSP) uses thermal energy from the sun to generate electricity. The electricity generation from solar thermal can be produced with four technologies of concentrating solar systems which are parabolic trough, linear Fresnel reflector, solar tower, and parabolic dish-Stirling engine system. This paper reviews the parabolic dish-stirling based on CSP technology by taking into account the performance, the global performance, site for parabolic dish and levelized cost of energy (LCOE). Generally, the parabolic dish applications have barriers in terms of the technology and the high capital cost compared to the others CSP technologies.

Study The Feasibility Of Parabolic Dish (Pd) From Several Prospective Criteri In Malaysia Environment

Promoting the use of Renewable Energy (RE) resources has become one of the top government agendas throughout the world. However, in order to develop RE such as Concentrating Solar Power (CSP) in Malaysia, several key factors that affect the performance of this system should be thoroughly investigated. Therefore, this paper aims to study the feasibility of implementing Parabolic Dish (PD) based on CSP in Malaysia environment by evaluating the CSP technologies, Meteorological data, Direct Solar Irradiance (DNI), global Parabolic Dish development, sites selection, and Levelized Cost of Energy (LCOE) of the PD system. Therefore, an innovative development and research of Parabolic Dish CSP should be carried out with an in depth consideration on both technical and economic aspects to ensure that the Parabolic Dish technology development will be as matured as the other CSP technologies

Comparison Study Of Energy Efficiency Activities Programs Among The Selected Region And Countries: Lessons Learned For Malaysia

This study reviews the contemporary tendencies in energy efficiency performance in chosen regions and countries. It also reviews the energy efficiency strategies and activities accomplished in these countries which pursue the program of reduction in energy consumption while maintaining the comfort level. These become the objectives and today’s energy efficiency requirement. This study also aims to highlight these activities and the outcomes of the energy efficiency implementation. The extent of this action and its effectiveness is being ascertained. The indicator used to evaluate the Energy Efficiency activities is the Energy Intensity Indicator which is provided by International Energy Agency (IEA). The reports and measurements of the International Energy Agency (IEA) are considered in order to make comparison among the selected countries. The main reason of focus on Energy Intensity levels is because this indicator reflects the result of all activities in different sectors and make sense which country has fulfilled the requirement of Energy Efficiency. The regions and countries are selected on the basis that their level of achievement in the energy efficiency programs are high. However, comparison is still made because each region and country has different emphasis and focus. Despite that Malaysia is a developing country, the achievement towards satisfactory energy efficiency implementation can be considered as encouraging and can only advance further if energy efficiency practice in these selected countries will be learned

The Effects Of Solar Irradiance, Reflecting Material And Intercept Factor To The Solar Power Intercepted By Receiver 1kw Parabolic Dish

Parabolic Dish (PD) system is one of the Concentrating Solar Power (CSP) technologies that converts the thermal energy from solar irradiance into mechanical energy and then to electrical energy. The concentrator in PD system works by focusing the solar radiation onto the receiver located at the focal point. The solar power that produced from the concentration process is intercepted by the receiver and then used for the energy conversion process in PD system. This study is carried out to understand the effect of the intercept factor, reflecting material and the DNI to the solar power intercepted by the receiver in PD 1kW system. Meanwhile, Matlab Simulink was used in this study as the simulation tool. The study shows that the solar power intercepted by the receiver in 1kW PD system are strongly depending on the intercept factor, DNI of the locations and reflecting material used for the concentrator. Whereas, the results from this study are useful for a better understanding especially on the effects of the intercept factor, reflecting material and the DNI to the solar power intercepted by the receiver for 1kW PD system in different locations with different DNI level

Temperature Control of the 25kW Parabolic Dish-Stirling Engine System

This paper is under in-depth investigation due to suspicion of possible plagiarism on a high similarity indexNowadays, even though many researchers continue to investigate and study about Parabolic Dish based on Concentration Solar Power (CSP), the findings are not conclusive and do not provide accurate evidence and proof on the potential of CSP development in Malaysia. The missing link in the Parabolic Dish (PD) Stirling Engine system modelled is the control systems, which vary the amount of working gas in the Stirling engine. The temperature of the heater in PD system which has been modelled is overheated and causes damage to the heater material, low output efficiency, high thermal losses and effect to the lifespan of the PD system. Therefore, the primary aim of this paper was to design a control system to maximize output efficiency during a normal operation by maintaining the heater/absorber temperature at the highest safe operating point and preventing excessive range of threshold to prevent damage to the heater material