Novel Concepts for Energy-Efficient Water Heating Systems: Theoretical Analysis and Experimental Investigation


Editors: Douglas Fernandes Barbin and Vivaldo Silveira, Jr.
Series: Energy Science, Engineering and Technology

Large-scale power plants and energy producers discard massive heat energy that goes unused. Energy efficiency techniques such as insulation or properly maintained heating systems are less likely when it requires high investments. While “conservation” generally refers to the reduction of total energy usage, “efficiency” means increasing the yield per unit of energy. In many cases, the energy needed to heat water or refrigerate products can also be reduced through conservation and application of more efficient technologies.

Heat pump water heaters use electricity to “move” heat from one place to another instead of generating heat directly. Therefore, they can be two to three times more energy-efficient than conventional electric resistance water heaters. This book examines the full application of energy-efficient water-heating systems, focused on heat pump devices. The main objective is to present a brief introduction of the working principles of this equipment, and concentrate on descriptions and applications where both “purposes” of the system are used, the heating and the cooling components, maximizing its effectiveness.

Table of Contents


Chapter 1. Heat Pump Water Heaters
(Daniel Leighton, Yunho Hwang, Reinhard Radermacher, Center for Environmental Energy Engineering, Department of Mechanical Engineering, University of Maryland, College Park, MD, USA)

Chapter 2. Chemisorption Heat Pumps for Water Heating and Steam Production
(Rogerio Gomes de Oliveira, Campus Araranguá, Universidade Federal de Santa Catarina (UFSC), Araranguá, Brazil and Laboratory of Energy Conversion Engineering and Energy Technology (LEPTEN), Department of Mechanical Engineering, UFSC, Florianópolis, Brazil)

Chapter 3. Energy Efficiency of a Gas Engine Heat Pump Used in Water Cooling and Heating Applications
(E. Elgendy, J. Schmidt, A. Khalil and M. Fatouh, Institute of Fluid Dynamics and Thermodynamics, Faculty of Process and System Engineering, Otto-von-Guericke University, Universitätsplatz, Magdeburg, Germany, and others)

Chapter 4. Advances in Air-Source Heat Pump Water Heaters
(Paul Byrne, Université Européenne de Bretagne, Laboratoire de Génie Civil et de Génie Mécanique – INSA de Rennes, Université de Rennes1, Rennes, France)

Chapter 5. Double-Effect Heat Pump Application for Energy-Saving Heating Systems
(Rodrigo A. Jordan, Douglas F. Barbin, Vivaldo Silveira Jr. Faculty of Agricultural Sciences, UFGD, Rodovia Dourados-Itahum, Dourados-MS, Brazil, and others)

Chapter 6. Low-Enthalpy Geothermal Systems
(Stefano Lo Russo and Emanuele Roccia, Politecnico di Torino – Land, Environment and Geo-Engineering Department DIATI (Dipartimento di Ingegneria dell’ambiente, del Territorio e delle Infrastrutture), Torino, Italy, and others)

Chapter 7. Hydronic Radiant Building Surfaces for Space Heating
(Simos Oxizidis, School of Mechanical & Materials Engineering, University College Dublin, Belfield, Dublin, Ireland)


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