Imperial College London
Alternate

ProfessorChristosMarkides

Faculty of Engineering, Department of Chemical Engineering

Professor of Clean Energy Technologies
 
 
 
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Contact

 

+44 (0)20 7594 1601c.markides Website

 
 
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Location

 

404ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Wang:2018,
author = {Wang, K and Herrando, M and Pantaleo, AM and Markides, CN},
title = {Thermodynamic and economic assessments of a hybrid PVT-ORC combined heating and power system for swimming pools},
url = {http://hdl.handle.net/10044/1/62245},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - The  thermodynamic  and economicperformance  of  a solar combined  heatand  power(S-CHP) system  based  on  an  array  of hybrid  photovoltaic-thermal  (PVT) collectorsandan  organic Rankine cycle (ORC)engineis considered for the provision of heating and power to swimming poolfacilities. Priority is given to meeting the thermaldemand of the swimming pool,in order to ensure a comfortable condition for swimmers in colderweather conditions, while excessthermal output from the collectorsat highertemperatures is converted toelectricityby the ORC engine inwarmerweather conditions. The thermodynamic performance of this system and its dynamic characteristicsare  analysed  on  the  basis  of  a  transient  thermodynamic  model.  Various  heat losses and gains are considered in accordance toenvironmental and user-relatedfactorsfor both indoor and outdoor swimming pools. A case study is then performed for the swimming pool atthe  UniversitySportCentre  (USC)of  Bari,  Italy.  The  results  show thatemployinga zeotropic mixture of R245fa/R227ea (30/70%) as the ORC working fluidallows such an ORC systemto generate~50% more power than when usingpure R236eadue to the better temperature matchof the  cycle tothe  low-temperature  hot-water  heat  sourcefrom  the  output  of  the  PVT  collectors.Apart  from  generatingelectricity,  the  ORC enginealso alleviatesPVT  collectoroverheating,and reducesthe required size of the hot-water storage tank. With an installation of 2000 m2of PVT collectors, energetic analysesindicate that the proposedS-CHP systemcan cover 84-96% of the thermal demand of the swimming pool during the warm summer months and 61% of itsannually integratedtotal thermal demand. In addition, the system produces a combined (from thecollectors andORC  engine)  of 328  MWhofelectricityper  year, corresponding  to  36%  of  the total  electricity  demand  of  the USC,  with  ~4%  coming  from  the ORC  engine.Theanalysis suggestsa minimum payback time of 12.7yearswith anopt
AU  - Wang,K
AU  - Herrando,M
AU  - Pantaleo,AM
AU  - Markides,CN
PY  - 2018///
TI  - Thermodynamic and economic assessments of a hybrid PVT-ORC combined heating and power system for swimming pools
UR  - http://hdl.handle.net/10044/1/62245
ER  -
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