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Title:
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Estudio y Modelado de una Bomba de Calor con CO2
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Author:
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Monticelli, Giuseppe
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Ruiz Mansilla, Rafael; Frère, Marc |
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Abstract:
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CFCs (chlorofluorocarbons) have been abolished and HCFCs (hydrochlorofluorocarbons)
are in process of being abolished as working fluids due to their high global warming potential
(GWP) and ozone depletion potential (ODP). CO2 is non-toxic, non-flammable, has zero
ODP and negligible GWP as working fluid.
In the present work the behavior of transcritical CO2 from the point of view of its thermal and
mechanical properties through the correlations of Gnielinski (1976), Pitla (2002), Dang
(2002) and Yoon (2003) has been analyzed and a system model written in Matlab language
for simulating the operation of a heat pump system based on cross-counter-flow fin-and-tube
heat exchangers has been developed. The validation of the model has been accomplished
using experimental data found in literature for heat pump system working at similar
conditions.
Finally, the theoretical performance and cost of the delivered heat of the heat pump system
and the effects on them of operating parameters such as, ambient air temperature, outlet
temperature and mass flow rate of the heated air have been presented and discussed. Air
ambient temperature has been varied from 0 to 20°C, outlet air temperature from 40 to 70°C
and air mass flow rate from 0.25 to 0.75 kg/s. The most interesting application areas for this
type of heat pump can be space heating and drying processes. |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria mecànica::Motors::Motors tèrmics
-Heat pumps -- Mathematical models
-Carbon dioxide
-transcritical CO2
-heat pump system
-simulation model
-COP
-savings
-Bombes de calor -- Models matemàtics
-Anhídrid carbònic |
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Rights:
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Document type:
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Bachelor Thesis |
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Published by:
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Universitat Politècnica de Catalunya
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