Getu Hailu

University of Alaska

Dr. Getu Hailu is currently an Assistant Professor of mechanical engineering at the University of Alaska Anchorage. He has more than 20 years of experience in research and teaching. His current research focus is on technologies for net zero energy buildings (including solar thermal storages, building integrated photovoltaic thermal systems, solar energy and air source heat pump application in cold regions). His teaching interests include courses in the thermofluids and renewable energy areas both at the graduate and undergraduate level. He is the author or coauthor of more than 40 refereed publications. He is a member of ASME, ASHRAE and IBPSA.

2books edited

3chapters authored

Latest work with IntechOpen by Getu Hailu

Rotating machinery or turbomachinery is a machine with a rotating component that transfers energy to a fluid or vice versa. Rotating machines are one of the most widely used machines. They are used in everyday life, at least once a day. We find a turbomachine (fan) in a hair dryer and in a computer. We find a turbomachine (pump) in a refrigerator. Other commonly used household machines are clothes washers and dish washers. These machines need to drain the dirty water and replace with clean water. To do so an important component of these machines is a pump that is used to remove the dirty water. A water pump (hydrodynamic pump) is also essential to our car?s operation by maintaining an optimum operating temperature of the engine. The pump ensures that the coolant keeps circulating through the engine block, hoses and radiator, and maintains an optimum operating temperature. Turbomachines are also key machines used in power generation, fluid transportation, the processing industry and energy conversion. This book presents recent developments in improving the aero-thermal performance and the efficiencies of rotating machines.

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Rotating Machinery

Edited by Getu Hailu

Books edited

Zero and Net Zero Energy

Edited by Getu Hailu

Chapters authored

Seasonal Solar Thermal Energy Storage

By Getu Hailu

Solar intermittency is a major problem, and there is a need and great interest in developing a means of storing solar energy for later use when solar radiation is not available. Thermal energy storage (TES) is a technology that is used to balance the mismatch in demand and supply for heating and/or cooling. Solar thermal energy storage is used in many applications: buildings, concentrating solar power plants and industrial processes. Solar thermal water heaters capable of heating water during the day and storing the heated water for evening use are common. TES improves system performance by smoothing supply and demand and temperature fluctuations. Thermal energy storage has become a fast-growing business. According to a research report, the global thermal energy storage market is expected to reach USD 12.50 billion by 2025. The chapter describes different types of thermal energy storage systems. Brief history, current state of research and the future of thermal storage are presented. Types of thermal storages, classifications, advantages and disadvantages are discussed; important thermal and physical properties are tabulated. Advances in enhancement of thermal properties of materials are briefly discussed. Challenges, opportunities, market outlook, government incentives and polices that support deployment of energy storage systems are outlined.

Part of the book: Thermal Energy Battery with Nano-enhanced PCM

Introductory Chapter: Path to Net Zero Energy Buildings

By Getu Hailu

Part of the book: Zero and Net Zero Energy

Introductory Chapter: Rotating Machinery

By Getu Hailu

Part of the book: Rotating Machinery