Volume 14, Issue 6 (9-2014)                   Modares Mechanical Engineering 2014, 14(6): 124-134 | Back to browse issues page

‎ 20.1001.1.10275940.1393.14.6.19.8

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maerefat M, shafie P. Design of CCHP system for office buildings in Tehran and thermodynamical, environmental and economical evaluation in comparison to conventional system. Modares Mechanical Engineering 2014; 14 (6) :124-134
URL: http://mme.modares.ac.ir/article-15-10777-en.html
Design of CCHP system for office buildings in Tehran and thermodynamical, environmental and economical evaluation in comparison to conventional system
Mehdi Maerefat * 1, Payam Shafie2
1- Assoc. Prof. of Mech. Eng., Tarbiat Modares Univ
2- M.Sc.mechanical engineering/Tarbiat modares
Abstract:   (5883 Views)
In this article, after the design of a CCHP system for office buildings in Tehran, a mathematical analysis of the CCHP system following thermal demand management in comparison to separate system is presented. In order to have a comprehensive evaluation of the performance of the CCHP system, four criteria including primary energy saving, CO2 emission reduction, operational cost reduction and rate of return are employed for a typical office building in Iran. Also a sensitivity analysis of rate of return based on increasing natural gas and electric price is performed. Results show that the CCHP system with selling electricity to grid has much better performance than separate system when all of the criteria are involved. Also without selling electricity to grid the CCHP system achieves more benefits than separate system but these benefits are less than the benefits of the situation with selling electricity to grid. The sensitivity analysis shows that in the situation with selling electricity to grid, with increasing natural gas and electric price the ROR will be increased but in the situation without selling electricity to gird, with 40% increase in natural gas price the ROR will become less than Interest Rate.
Keywords: CCHP, Office building, Multi-criteria analysis, Thermal demand management, Sensitivity analysis
Full-Text [PDF 1107 kb]   (7306 Downloads)    
Article Type: Research Article | Subject: Energy in Buildings|Plumbing & Air Conditioning|Combined Heat & Power Systems
Received: 2013/11/6 | Accepted: 2013/12/23 | Published: 2014/07/13
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