Increase of COP for heat transformer in water purification systems. Part I – Increasing heat source temperature |
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| Affiliation: | 1. Department of Cardiology, Beijing An Zhen Hospital of the Capital University of Medical Sciences, Beijing, 100029, China;2. Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China;1. Department of Physics, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran;2. Department of Physics, University of Shahrood, P.O. Box 316-36155, Shahrood, Iran;1. Posgrado en Ingeniería y Ciencias Aplicadas (CIICAp), Universidad Autónoma del Estado de Morelos (UAEM), Av. Universidad No. 1001, Col. Chamilpa, Cuernavaca, Morelos C.P. 60209, Mexico;2. Centro de Investigación en Ingeniería y Ciencias Aplicadas (CIICAp), Universidad Autónoma del Estado de Morelos (UAEM), Av. Universidad No. 1001, Col Chamilpa, C.P. 62209 Cuernavaca, Morelos, Mexico;3. Subsecretaria de Innovación y Desarrollo Tecnológico, Secretaría de Innovación, Ciencia y Tecnología, Calle la Ronda No. 13 Col. Acapantzingo, Cuernavaca, Morelos C.P. 62440, Mexico |
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| Abstract: | The integration of a water purification system in a heat transformer allows a fraction of heat obtained by the heat transformer to be recycled, increasing the heat source temperature. Consequently, the evaporator and generator temperatures are also increased. For any operating conditions, keeping the condenser and absorber temperatures and also the heat load to the evaporator and generator, a higher value of COP is obtained when only the evaporator and generator temperatures are increased. Simulation with proven software compares the performance of the modeling of an absorption heat transformer for water purification (AHTWP) operating with water/lithium bromide, as the working fluid–absorbent pair. Plots of enthalpy-based coefficients of performance (COPET) and the increase in the coefficient of performance (COP) are shown against absorber temperature for several thermodynamic operating conditions. The results showed that proposed (AHTWP) system is capable of increasing the original value of COPET more than 120%, by recycling part of the energy from a water purification system. The proposed system allows to increase COP values from any experimental data for water purification or any other distillation system integrated to a heat transformer, regardless of the actual COP value and any working fluid–absorbent pair. |
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