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Low Head Hydropower for Local Energy Solutions

Low Head Hydropower for Local Energy Solutions

The role of small hydropower is becoming increasingly important on a global level. Increasing energy demand and environmental awareness has further triggered research and development into sustainable low-cost technologies. In developing countries particularly in rural areas the possibility of local power generation could considerably improve living conditions. With this in mind the development of a next generation low-head hydropower machines was subject of investigation in the EU-project HYLOW. Being part of the research lines of that project this thesis presents a numerical modelling approach to improve the design of machines like water wheels for increased hydraulic efficiency. Nowadays Computational Fluid Dynamics (CFD) enables numerical models to be quite accurate and incorporate physical complexities like free surfaces and rotating machines. The results of the CFD simulations carried out in this research show that a change in blade geometry can result in higher torque levels thereby increasing performance. Numerical simulations also enabled to determine the optimal wheel-width to channel-width ratio and further improve performance by modifying the channel bed conditions upstream and downstream of the water wheel. With a power rating in the low kilowatt range low-head hydropower machines like optimised water wheels seem to have a clear potential for small-scale energy generation thereby contributing to achieving the Sustainable Development Goals by providing local energy solutions. | Low Head Hydropower for Local Energy Solutions

GBP 84.99
1

A Practical Guide to Construction of Hydropower Facilities

A Practical Guide to Construction of Hydropower Facilities

This book deals with the narratives of water to watt which includes elementary conceptual design modern planning scheduling and monitoring systems and extensive pre- and post-investigations pertaining to hydropower facilities. It also includes explorations to ensure aspects of dam safety evaluation effective contract management specialized construction management techniques and preferred material and equipment handling systems. Special emphasis is placed upon health safety environmental and risk management concepts. The book discusses a standard QA/QC system to measure and assure quality and an environmental impact assessment to reach the set target in the stipulated timeline within the approved budget. Key Features:Offers comprehensive coverage of hydro-structures and practical coverage from an industry perspectiveHelps readers understand complexity involved in large-scale interdisciplinary projectsProvides good insights on building procedures precautions and project managementIncludes project planning construction management and hydropower technology QA/QC HSE and statutory requirementsIllustrates how to integrate good constructability/buildability into good design for the best monetary value | A Practical Guide to Construction of Hydropower Facilities

GBP 44.99
1

Integrated Operation of Hydropower Stations and Reservoirs/Exploitation des centrales hydroélectriques et des Réservoirs

Integrated Operation of Hydropower Stations and Reservoirs/Exploitation des centrales hydroélectriques et des Réservoirs

Integrated operation of hydropower stations and reservoirs has become a trend of hydropower exploitation as an effective technical measure integrated operation can improve the utilization efficiency of water resources reduce the risks of flood and drought disaster increase the safety and stability power grid and make sure that hydropower stations and reservoirs operate in an appropriate and economical way. This bulletin gives an overview of the main functional and operational aspects relating to cascade hydropower stations and reservoirs it was formed by reviewing of all the related aspects proposed and case studies provided by committee members. It collected and sorted out operation modes and practical experiences of hydropower stations and reservoirs in ICOLD member countries summarized the feasibility measures benefit evaluation methods and system platform construction of hydropower stations and reservoirs with comprehensive benefits and shared case studies from 10 countries including Brazil China France Iran Japan Korea Nigeria Russia Switzerland and USA. L'exploitation intégrée des centrales hydroélectriques et des réservoirs est devenue une mesure technique efficace de l'exploitation hydroélectrique. L'exploitation intégrée peut améliorer l'efficacité d'utilisation des ressources en eau réduire les risques de catastrophe d'inondation et de sécheresse augmenter la sécurité et la stabilité du réseau électrique et faire fonctionner les centrales hydroélectriques et les réservoirs de manière appropriée et économique. Ce bulletin donne un aperçu des principaux aspects fonctionnels et opérationnels relatifs aux centrales hydroélectriques et réservoirs en cascade. Il passe en revue tous les aspects connexes proposés et des études de cas fournies par les membres du comité. Il rassemble les modes de fonctionnement et les expériences pratiques des centrales hydroélectriques et des réservoirs dans les pays membres de la CIGB. Il résume les mesures de faisabilité les méthodes d'évaluation des avantages et la construction de plates-formes de systèmes de centrales hydroélectriques et de réservoirs avec des avantages complets. Il bénéficie des expériences et des études de cas de 10 pays y compris Brésil Chine Corée France Iran Japon Nigéria Russie Suisse et USA. | Integrated Operation of Hydropower Stations and Reservoirs/Exploitation des centrales hydroélectriques et des Réservoirs

GBP 79.99
1

Unger Nifty Nabber

Unger Nifty Nabber

The Unger Nifty Nabber features a modern design and comes equipped with an exceptionally robust design, 360-degree rotating head with responsive trigger handle, therefore, making those with limited dexterity easily grip those hard-to-reach items. The revolving jaw head allows objects to be picked up from a variety of angles and can be locked in various positions for increased flexibility. To promote optimum durability, grab power and the capability of holding items up to 4.5 kgs (10 lbs), the unique Nifty Nabber has a metal bar inside. The robust Nifty Nabber reaching aid benefits from an ergonomically designed handle with an easy to operate trigger that requires minimal finger extension and allows the use of all fingers for a more powerful grip. The easy to operate trigger design ensures this reacher is perfect for anyone with arthritic fingers or a weak grip. Features and Benefits: Ergonomic handle design reduces strain Slip resistant handles for secure grip Robust construction for durability Ridged jaws for better grip Adjustable rotating jaws Specifications: Available lengths: 630mm, 830mm, 930mm or 1020mm (24", 32", 35" or 39")

GBP 22.74
1

Unger COBW0 StarDuster Cobweb Duster Brush Pack of 6

Unger COBW0 StarDuster Cobweb Duster Brush Pack of 6

Clear away dust and cobwebs with one simple sweep using the Unger COBW0 StarDuster Cobweb Duster Brush! This bundle of split-tipped soft poly fibers dust surfaces without scratching, creating electrostatic energy to attract and trap dust.This cobweb duster can be used as a handheld duster or attached to a telescopic pole, making it great for cleaning hard-to-reach areas like ceiling fans and light fixtures! Plus, when you're done, it simply rinses clean with water.Unger COBW0 StarDuster Cobweb Duster Brush, 3-1/2 in. Handle. Cone-shaped duster gets into hard-to-reach ceiling/wall corners and crevices.Electrostatical charge improves dust attraction. Soft, split-tip bristles help ensure thorough cleaning.Unger COBW0 StarDuster Cobweb Duster Brush Overview: Shaped for ceiling/wall corners and crevices Electrostatically charged Soft, split-tip bristles May be used alone or with Unger telescopic poles (sold separately) Bristle Material: Polypropylene; Handle Colour: Grey Bristle Colour: Grey Bristle Length \(Nom\): 3 in.

GBP 0.00
1

AUK Group Premium Grade Virgin Mixed Bed Resin Bucket 25kg

AUK Group Premium Grade Virgin Mixed Bed Resin Bucket 25kg

Unger Premium Grade Virgin Mixed Bed Resin high capacity virgin mixed bed ion exchange resin for total deionisation and purification of water. Immediately produces 100% pure water for streak free glass cleaning. Premium grade virgin mixed bed resin - one of the best resins available on the UK market. Suitable for use in: - Refillable DI cartridges. - Di pressure vessels. - Filters for Pure Water Window Cleaning. - Compatible with all Unger HiFlo DI Cartridges and nLite HydroPower Di Filters. - Immediately produces 100% pure water for streak free glass cleaning. - This version of Ungers Premium Grade Resin is supplied in the 25 Litre re-sealable bucket.

GBP 219.99
1

AUK Group Hydraulic Power Quickchange Premium Resin Bags 24kg 24kg

AUK Group Hydraulic Power Quickchange Premium Resin Bags 24kg 24kg

Unger QuickChange Resin Bags The ingenious QuickChange Resin Bags allow users to speed up the resin change process by up to 10 times - simply remove the bag with expired resin and insert a new one. The new QuickChange Resin Bags offer fast and easy resin replacement on the spot with minimal mess - anytime and anywhere. Bag is made from a water-permeable material. - For HydroPower DI-Filter - Contains a pre-portioned amount of UNGER High Capacity Premium Grade Virgin Mixed Bed resin. - Simply remove the bag with expired resin and insert a new one. - 4 x 6 L Bags in a Bag.

GBP 199.99
1

Unger Plunger Wooden Domed Medium

Unger Plunger Wooden Domed Medium

The traditional force cup plunger is a rubber force cup on the end of a wooden handle with a disc behind it. As the name suggests this plunger is used for forcing water down the drain into the blockage and dislodging it.For maximum effect with a tight seal and no air in the cup a back and forth motion will create high and low pressure at the point of the blockage. This dual action may be needed several times to break up and release stubborn blockages from the sides of the drain.The Cooper Plunger is part of this range and is specifically for unblocking toilets. The long T-handle gives a good grip and the flat rubber disc ensures a tight seal. Usually a series of short sharp pushes will release the blockage.

GBP 0.00
1

Unger Plunger Wooden Domed Large

Unger Plunger Wooden Domed Large

The traditional force cup plunger is a rubber force cup on the end of a wooden handle with a disc behind it. As the name suggests this plunger is used for forcing water down the drain into the blockage and dislodging it. For maximum effect with a tight seal and no air in the cup a back and forth motion will create high and low pressure at the point of the blockage. This dual action may be needed several times to break up and release stubborn blockages from the sides of the drain. The Cooper Plunger is part of this range and is specifically for unblocking toilets. The long T-handle gives a good grip and the flat rubber disc ensures a tight seal. Usually a series of short sharp pushes will release the blockage. Product features   Dimensions Handle: 510(L)mm. Cup: 150(?)mm Flexible rubber cup for maximum suction Wooden handle

GBP 0.00
1

AUK Group Ergotec Swivelloc Handle Each

AUK Group Ergotec Swivelloc Handle Each

Unger ErgoTec SwivelLoc Handle has a swivel action and ergonomic grip. This straight version is suitable for pole. The 30 degree version is suitable for normal cleaning. Fits securely to Unger poles fitted with the locking cone. Compatable with the Unger S & S Plus Channels. Unger ErgoTec SwivelLoc Handle Features: - Swivel squeegee head, freely adjustable and lockable. - Problem solver for hard to-reach places. - Advanced ergonomic bi-component handle for comfortable use. - UNGER squeegees feature comfortable handles, high quality rubber and special locking mechanism for quick and easy change of the channel. - Model head angle (0). - Compatible with S-Channel and S-Channel Plus. - Fits securely to pole with Locking Cone for extra safety.

GBP 24.99
1