Imperial College London
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Dr. Maria Herrando Zapater

Faculty of Engineering, Department of Chemical Engineering

 
 
 
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Contact

 

maria.herrando11

 
 
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Location

 

Office 432ABCBone BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Markides:2015:10.1016/j.apenergy.2015.09.025,
author = {Markides, CN and Herrando, M and Herrando, M and Markides, CN},
doi = {10.1016/j.apenergy.2015.09.025},
journal = {Applied Energy},
pages = {512--532},
title = {Hybrid PV and solar-thermal systems for domestic heat and power provision in the UK: Techno-economic considerations},
url = {http://dx.doi.org/10.1016/j.apenergy.2015.09.025},
volume = {161},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A techno-economic analysis is undertaken to assess hybrid PV/solar-thermal (PVT) systems for distributedelectricity and hot-water provision in a typical house in London, UK. In earlier work (Herrando et al., 2014), asystem model based on a PVT collector with water as the cooling medium (PVT/w) was used to estimateaverage year-long system performance. The results showed that for low solar irradiance levels and lowambient temperatures, such as those associated with the UK climate, a higher coverage of total householdenergy demands and higher CO2 emission savings can be achieved by the complete coverage of the solar collectorwith PV and a relatively low collector cooling flow-rate. Such a PVT/w system demonstrated an annualelectricity generation of 2.3 MW h, or a 51% coverage of the household’s electrical demand (compared to anequivalent PV-only value of 49%), plus a significant annual water heating potential of to 1.0 MW h, or a 36%coverage of the hot-water demand. In addition, this system allowed for a reduction in CO2 emissionsamounting to 16.0 tonnes over a life-time of 20 years due to the reduction in electrical power drawn fromthe grid and gas taken from the mains for water heating, and a 14-tonne corresponding displacement of primaryfossil-fuel consumption. Both the emissions and fossil-fuel consumption reductions are significantlylarger (by 36% and 18%, respectively) than those achieved by an equivalent PV-only system with the samepeak rating/installed capacity. The present paper proceeds further, by considering the economic aspects ofPVT technology, based on which invaluable policy-related conclusions can be drawn concerning the incentivesthat would need to be in place to accelerate the widespread uptake of such systems. It is found that,with an electricity-only Feed-In Tariff (FIT) support rate at 43.3 p/kW h over 20 years, the system cost estimatesof optimised PVT/w systems have an 11.2-year discounted payback period (PV-only: 6.8 years). Therole and i
AU  - Markides,CN
AU  - Herrando,M
AU  - Herrando,M
AU  - Markides,CN
DO  - 10.1016/j.apenergy.2015.09.025
EP  - 532
PY  - 2015///
SN  - 0306-2619
SP  - 512
TI  - Hybrid PV and solar-thermal systems for domestic heat and power provision in the UK: Techno-economic considerations
T2  - Applied Energy
UR  - http://dx.doi.org/10.1016/j.apenergy.2015.09.025
UR  - http://hdl.handle.net/10044/1/26339
VL  - 161
ER  -
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