Category Archives: Renewable Energy

وقود الديزل الحيوي

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هي الوقت البديلة النظيفة المنجة محليا والتى تعد من الموارد المتجددة  وهذه الوقود عبارة عن خليط من  استرات ألكيل الدهنية حمض مصنوعة من الزيوت النباتية،و  الدهون الحيوانية أو الشحوم المعاد تدويرهاحيثما كان ذلك متاحا، وقود الديزل الحيوي يمكن استخدامها في ضغط الاشتعال (الديزل) محركات في شكله النقي مع تعديلات ضئيلة أو معدومة. وقود الديزل الحيوي هو سهلة الاستخدام، والقابلة للتحلل غير سام، وخالية أساسا من الكبريت والعطريات. عادة ما يتم استخدامه كمادة مضافة الديزل النفطية للحد من مستويات الجسيمات وأول أكسيد الكربون والهيدروكربونات والمواد السامة من السيارات العاملة على المازوت. عندما تستخدم كمادة مضافة، وقود الديزل الناتجة يمكن أن يسمى ب5، ب10 … Continue reading →

البرك الشمسية في البحر الميت – حين يجد الشباب الأردني الحل لتوفير الطاقة

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توالت الاقتراحات و الحلول لمشاكل توفير الطاقة عبر السنين العشر الماضية في الأردن , و كان العديد من المهتمين بهذا الموضوع في وضعية بحث غير منقطعة عن حلول جدية و احيانا جذرية , لكن كما يعلم الجميع ما زال موضوع ” البدائل البيئية ” و كيفية الحفاظ على البيئة و توفير الطاقة موضوعا يصنف تحت قائمة ” الرفاهيات ” و أن هناك ما هو أهم لتسليط الضوء عليه رغم وجود حوال 70 جمعية لحماية البيئة في الأردن . لكن ليس من الضروري أحيانا  أن تصل التوعية لأعداد ضخمة أو مجتمعات كبيرة , ربما وصولها لأفراد سينعشها و يضخ الحياة فيها … Continue reading →

الطاقه المتجددة بالمغرب العربي

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المغرب، كونها أكبر مستورد للطاقة في شمال أفريقيا، تبذل جهودا مركزة للحد من اعتمادها على الوقود الأحفوري المستورد. وتعتبر الطاقة المتجددة  مصدر موثوق في بلد مثل المغرب العربي التي لديها الاعتماد الكامل تقريبا على شركات الطاقة المستوردة.والمغرب تنفق سنويا  أكثر من 3 مليارات دولار على واردات الوقود والكهرباء في حين انها تشهد نمو الطلب على الطاقة بمعدل 6.5 في المئة سنويا. وفقا لتقرير الوزارة المغربية للطاقة والتعدين، الطاقة الإجمالية المركبة للطاقة المتجددة (باستثناء الطاقة المائية) ما يقرب من 300ميجا وات في عام 2011. وقد حققت الحكومة المغربية بالفعل هدفها المتمثل في توفير حوالي 8٪ من إجمالي الطاقة الأولية من مصادر … Continue reading →

An Introduction to Solar Pond

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A solar pond is a three-dimensional, open-air pit, filled with water endowed with special properties. It receives solar energy through insulation, then the trapped heat is extracted from it from the water lying at the bottom of the pond. When solar energy falls onto the pond, it heats the water, splitting it into three sections: the first section is the uppermost layer, or Surface Zone, containing fresh water with a low level of salinity. This owes to the fact that salts gather at the bottom. The second layer is the middle layer, called the insulating layer or Insulation Zone, whose … Continue reading →

Solar Energy Prospects in Tunisia

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Tunisia is an energy-dependent country with modest oil and gas reserves. Around 97 percent of the total energy is produced by natural gas and oil, while renewables contribute merely 3% of the energy mix. The installed electricity capacity at the end of 2015 was 5,695 MW which is expected to sharply increase to 7,500 MW by 2021 to meet the rising power demands of the industrial and domestic sectors. Needless to say, Tunisia is building additional conventional power plants and developing its solar and wind capacities to sustain economic development. Wind Energy in Tunisia Wind power represents the main source of renewable energy in … Continue reading →

Mega Green Energy Projects in Jordan: How Do We Reduce the Cost?

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Jordan has a huge natural advantage. It gets excellent sunshine all year round and has powerful wind corridors. The country is also in a perfect location to sell clean energy to Europe and Asia. Jordan wants to build massive solar and wind plants, and it plans to create a major green hydrogen network by 2030. However, building these mega projects costs billions of dollars. Because these projects are so expensive to build upfront, the cost of borrowing money from banks is the biggest barrier holding them back. If interest rates and financing costs are too high, the clean energy produced … Continue reading →

Biomass Energy Resources in Jordan: An Overview

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With high population growth rate, increase in industrial and commercial activities, high cost of imported energy fuels and higher GHGs emissions, supply of cheap and clean energy resources has become a challenge for the Jordanian Government. Consequently, the need for implementing renewable energy projects, especially solar, wind, biomass and energy-from-waste, has emerged as a national priority in recent years. Jordan has substantial biomass resources in the form of municipal solid wastes, sewage, industrial wastes and animal manure. Municipal solid wastes represent the best source of biomass in Jordan. Solid waste generation in the country is approximately 2 million tons per … Continue reading →

Designing Safer Solar Arrays: A Practical Guide to DC Isolation

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Solar projects in hot, dusty, and high-irradiance regions place unusual demands on direct-current switching equipment. A rooftop or ground-mounted array may operate for decades while its disconnects face ultraviolet exposure, temperature cycling, airborne dust, humidity, and repeated maintenance activity. Choosing the correct DC isolation device is therefore both an electrical-safety decision and a long-term reliability decision. What a solar DC isolator actually does A DC isolator, also called a DC disconnect in some markets, separates a section of the photovoltaic array from downstream equipment. It gives technicians a controlled way to de-energize conductors for inspection, inverter replacement, emergency response, or … Continue reading →

Renewable Energy Investment in Jordan

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Jordan has tremendous wind, solar and biomass energy potential which can only be realized by large-scale investments. In 2007, the Government of Jordan developed an integrated and comprehensive Energy Master Plan. Renewable energy accounted for only 1% of the energy consumption in Jordan in 2007. However, ambitious targets have been set in the Master Plan to raise the share to 7% in 2015 and 10% in 2020. This transition from conventional fuels to renewable energy resources will require capital investments, technology transfer and human resources development, through a package of investments estimated at US $ 1.4 – 2.2 billion. The … Continue reading →

Agricultural Biomass Resources in the MENA Countries

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Agriculture plays an important role in the economies of most of the countries in the Middle East and North Africa region.  Despite the fact that MENA is the most water-scarce and dry region in the world, many countries in the region, especially those around the Mediterranean Sea, are highly dependent on agriculture. The contribution of the agricultural sector to the overall economy varies significantly among countries in the region, ranging, for example, from about 3.2 percent in Saudi Arabia to 13.4 percent in Egypt.  Large scale irrigation coupled with mechanization has enabled extensive production of high-value cash crops, including fruits, … Continue reading →

What are Biofuels: Things You Should Know

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Biofuel refers to liquid or gaseous fuels that are predominantly produced from biomass. A variety of fuels can be produced from biomass resources including liquid fuels, such as ethanol, methanol, biodiesel, Fischer-Tropsch diesel, and gaseous fuels, such as hydrogen and methane. Resource Base for Biofuels Production The biomass resource base for biofuels production is composed of a wide variety of forestry and agricultural resources, industrial processing residues, municipal solid wastes and urban wood residues. The agricultural resources include grains used for biofuels production, animal manures and residues, and crop residues derived primarily from corn and small grains (e.g., wheat straw). … Continue reading →

Refuse Derived Fuel (RDF) – Fuel Pellets from Solid Wastes

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Municipal solid waste is a poor-quality fuel and its pre-processing is necessary to convert it into fuel pellets to improve its consistency, storage properties, handling characteristics, combustion behaviour and calorific value. Technological improvements are taking place in the realms of advanced source separation of MSW, resource recovery and production of RDF pellets in both existing and new plants for this purpose. There has been an increase in global interest in the preparation of MSW fuel pellets or Refuse Derived Fuel (or RDF) so let us take a close look at this interesting alternative fuel. RDF Manufacturing Process Pelletization of municipal … Continue reading →