Off-design performance modelling of a solar organic Rankine cycle integrated with pressurized hot water storage unit for community level application

Solar organic Rankine cycle (ORC) has advantages over common PV systems in view of the flexible operation even if solar radiation is unavailable. However, at present the dynamic performance of solar ORC with respect to the off-design behaviour of storage unit, expander, pump and heat exchanger is ra...

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Main Authors:	Kutlu, Cagri, Li, Jing, Su, Yuehong, Pei, Gang, Riffat, Saffa
Format:	Article
Language:	English
Published:	Elsevier 2018
Online Access:	http://eprints.nottingham.ac.uk/51576/ http://eprints.nottingham.ac.uk/51576/ http://eprints.nottingham.ac.uk/51576/ http://eprints.nottingham.ac.uk/51576/1/ECM-D-17-06458R1.pdf

id	nottingham-51576
recordtype	eprints
spelling	nottingham-515762018-07-02T09:19:49Z http://eprints.nottingham.ac.uk/51576/ Off-design performance modelling of a solar organic Rankine cycle integrated with pressurized hot water storage unit for community level application Kutlu, Cagri Li, Jing Su, Yuehong Pei, Gang Riffat, Saffa Solar organic Rankine cycle (ORC) has advantages over common PV systems in view of the flexible operation even if solar radiation is unavailable. However, at present the dynamic performance of solar ORC with respect to the off-design behaviour of storage unit, expander, pump and heat exchanger is rarely reported. This paper investigates a medium-temperature solar ORC system characterized by evacuated flat-plate collectors and pressurised water storage unit. The main aim of the study is to investigate the performance of the system with consideration of transient behaviour of the thermal storage unit which results in off-design operation of other components. The other aim is adjusting the power output according to electricity demand throughout a day. The heat storage unit is analysed using one-dimensional temperature distribution model. A transient simulation model is developed including pump and expander models. To meet the electrical demands of different periods, the mass flow rate of heat source is adjusted for controlling the evaporation temperature. Moreover, sliding pressure operation control strategy of the ORC is implemented to meet variable heat source temperature. A 550 m2 solar collector area and a 4 m diameter and 7 m height pressurized water cylinder are used in simulation. Produced work is controlled and the results are matched with the demands. Produced work from the expander under the given conditions are 47.11 kWh in day time, 70.97 kWh in peak period and 31.59 kWh after midnight. Elsevier 2018-06-15 Article PeerReviewed application/pdf en http://eprints.nottingham.ac.uk/51576/1/ECM-D-17-06458R1.pdf Kutlu, Cagri and Li, Jing and Su, Yuehong and Pei, Gang and Riffat, Saffa (2018) Off-design performance modelling of a solar organic Rankine cycle integrated with pressurized hot water storage unit for community level application. Energy Conversion and Management, 166 . pp. 132-145. ISSN 0196-8904 https://www.sciencedirect.com/science/article/pii/S0196890418303595 doi:10.1016/j.enconman.2018.04.024 doi:10.1016/j.enconman.2018.04.024
repository_type	Digital Repository
institution_category	Local University
institution	University of Nottingham Malaysia Campus
building	Nottingham Research Data Repository
collection	Online Access
language	English
description	Solar organic Rankine cycle (ORC) has advantages over common PV systems in view of the flexible operation even if solar radiation is unavailable. However, at present the dynamic performance of solar ORC with respect to the off-design behaviour of storage unit, expander, pump and heat exchanger is rarely reported. This paper investigates a medium-temperature solar ORC system characterized by evacuated flat-plate collectors and pressurised water storage unit. The main aim of the study is to investigate the performance of the system with consideration of transient behaviour of the thermal storage unit which results in off-design operation of other components. The other aim is adjusting the power output according to electricity demand throughout a day. The heat storage unit is analysed using one-dimensional temperature distribution model. A transient simulation model is developed including pump and expander models. To meet the electrical demands of different periods, the mass flow rate of heat source is adjusted for controlling the evaporation temperature. Moreover, sliding pressure operation control strategy of the ORC is implemented to meet variable heat source temperature. A 550 m2 solar collector area and a 4 m diameter and 7 m height pressurized water cylinder are used in simulation. Produced work is controlled and the results are matched with the demands. Produced work from the expander under the given conditions are 47.11 kWh in day time, 70.97 kWh in peak period and 31.59 kWh after midnight.
format	Article
author	Kutlu, Cagri Li, Jing Su, Yuehong Pei, Gang Riffat, Saffa
spellingShingle	Kutlu, Cagri Li, Jing Su, Yuehong Pei, Gang Riffat, Saffa Off-design performance modelling of a solar organic Rankine cycle integrated with pressurized hot water storage unit for community level application
author_facet	Kutlu, Cagri Li, Jing Su, Yuehong Pei, Gang Riffat, Saffa
author_sort	Kutlu, Cagri
title	Off-design performance modelling of a solar organic Rankine cycle integrated with pressurized hot water storage unit for community level application
title_short	Off-design performance modelling of a solar organic Rankine cycle integrated with pressurized hot water storage unit for community level application
title_full	Off-design performance modelling of a solar organic Rankine cycle integrated with pressurized hot water storage unit for community level application
title_fullStr	Off-design performance modelling of a solar organic Rankine cycle integrated with pressurized hot water storage unit for community level application
title_full_unstemmed	Off-design performance modelling of a solar organic Rankine cycle integrated with pressurized hot water storage unit for community level application
title_sort	off-design performance modelling of a solar organic rankine cycle integrated with pressurized hot water storage unit for community level application
publisher	Elsevier
publishDate	2018
url	http://eprints.nottingham.ac.uk/51576/ http://eprints.nottingham.ac.uk/51576/ http://eprints.nottingham.ac.uk/51576/ http://eprints.nottingham.ac.uk/51576/1/ECM-D-17-06458R1.pdf
first_indexed	2018-09-06T14:21:33Z
last_indexed	2018-09-06T14:21:33Z
_version_	1610868267197399040

Off-design performance modelling of a solar organic Rankine cycle integrated with pressurized hot water storage unit for community level application

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