Efficiency Optimization Of Combined Heat And Power System Integrated With Renewable Energy For A Hospital

Yıl 2019, Cilt: 3 Sayı: 1, 76 - 81, 04.03.2019

Nurdan Burgu Haluk Gözde M.cengiz Taplamacıoğlu

Öz

The demand of energy is getting higher with the developing technologies
and increase of world population. Recently most of the energy demand is
providing from the fossil fuels. The global greenhouse gas (GHG) emissions from
fossil fuels are threat for the world. The combustion of fossil fuels such as
coal, oil and natural gas causes the GHG emission. Since fossil fuels are the
greatest part of production of electricity and thermal steam, most of the
research is making on clean, economical and reliable energy sources. Between
the renewable energy sources, photovoltaic arrays get importance since
photovoltaic Panel (PV) converts sunlight directly into electricity is a good
option to produce electrical energy. Photovoltaic panels do not directly emit
GHGs while energy conversion. However, PV cells have limitations because of
inherent intermittency of solar irradiation and cloudy weather conditions. One
of the greatest advantages of renewable sources is being integrated with other
renewable energy sources to form a hybrid system. Therefore, to provide
reliable and continuous energy, it is suggested that PV can be hybridized with
other sources such as co-generation (CHP-Combined Heat and Power) system.

Combined Heat and Power technology is one of the efficient technology since
it provides twice or more times of the useful energy from the same amount of
fuel. The places need both electrical and thermal loads such as hotels,
residential buildings and especially hospitals are good option to use CHP
systems are coupled with solar photovoltaic (PV) arrays, reduces GHG emissions
further. By adding battery systems to a PV+CHP system, total system efficiency
will be getting higher by reducing CHP runtime. For simulation and optimization
of renewable energy systems a lot of software have been developed.  One of the most successful software is the
Hybrid Optimization Model for Electric Renewable (HOMER) with the Pro Microgrid
Analysis tool is to simulate PV+battery+CHP hybrid systems. In this paper, a
hybrid system is simulated for a hospital and it is observed that the
electricity produced by each component of the hybrid system can be integrated
to meet the hospital load demand. Thermal load demand is supplied with a boiler
and CHP unit. A sensitivity analysis of this hybrid off grid systems is
depended on a function capacity factor of both the PV and CHP units. As a
result of this study, it is found that PV + battery + CHP hybrid system is one
of the most effective system to reduce energy related emissions and also to
increase energy efficiency.

Anahtar Kelimeler

Hybrid Energy Systems, Renewable Energy Sources, Optimization, PV+Battery+CHP systems

Kaynakça

• Referans1 Intergovernmental Panel On climate change ,Climate change. Synthesis report 2014
• Referans 2 World Energy Investment 2018 Executive Summary
• Referans 3 International Journal of Refrigeration, Volume 22, Issue 6, September 1999, Pages 479-485 V Havelský
• Referans 4 Expanding photovoltaic penetration with residential distributed generation from hybrid solar photovoltaic and combined heat and power systems Energy, Volume 34, Issue 11, November 2009, Pages 1947-1954 J. M. Pearce
• Referans 5 Performance of U.S. hybrid distributed energy systems: Solar photovoltaic, battery and combined heat and power Energy Conversion and Management, Volume 105, 15 November 2015, Pages 71-80 Kunal K. Shah, Aishwarya S. Mundada, J. M. Pearce
• Referans 6 Forster, P. Climate Change 2007: The Physical Science Basis- Changes in Atmospheric Constituents and in Radiative Forcing, Intergovernmental Panel on Climate Change (2007).
• Referans 7 Dispatch strategy and model for hybrid photovoltaic and trigeneration power systems Applied Energy, Volume 88, Issue 9, September 2011, Pages 3270-3276 Amir Nosrat, Joshua M. Pearce
• Referans 8 Tom Lambert,Paul Glman and Peter Lilienthal, Micropower System Modelling with HOMER
• Referans 9 HOMER Pro 3.12 UserManual, released August 13, 2018.
• Referans 10 www.nrel.gov
• Referans 11 K. Maharaja, S. Sangeetha, K. Mareeswari Sizing of solar PV power plant in stand-alone operation Int J Eng Res Technol, 3 (6) (2014) http://www.ijert.org/view-pdf/9972/sizing-of-solar-pv-power-plant-in-stand-alone-operation