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Optimal Operation and Design Analysis on BCHP System with Energy Storage

Author: LiYongHong
Tutor: JiangYi
School: Tsinghua University
Course: Civil Engineering
Keywords: Buildings thermoelectric cooling by the system Energy storage device Optimal operation Generation design sharing rate
CLC: TU831.6
Type: Master's thesis
Year: 2005
Downloads: 509
Quote: 6
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Abstract


With the economic development, energy structure adjustment, heat, electricity, cooling load demand gradually universalized, as well as some of the key technology advances, especially the emergence of the microturbine and fuel cell technologies, distributed heat, electricity, cold joint supply The application of technology has gradually attracted people's attention. However, the existing gas-fired thermoelectric cooling by the widespread phenomenon of poor economic. Not only with energy prices, electricity regulations, and management of specific institutional policies, more importantly, reflect too hot, electricity, cooling load demand analysis and rational allocation issues. In this paper, for the operation and design of buildings with energy storage devices gas-fired thermoelectric (cold) generation system optimization problem. In order to properly assess the characteristics of the building thermoelectric cooling load distribution, the introduction of the SR proportion. The SR ratio reflects the main characteristics of the building load shape and measurement the thermoelectric or cold electrical load occurs while specific building load for maximum energy efficiency potential comparative analysis. The results show that the role of the office building CHP system plus storage is more significant than the hotel building. Full year operating conditions for the cycle, in order to comprehensively and objectively reflect the impact of hot (cold) load and power load change for thermoelectric cooling system running. Thermoelectric cooling system with energy storage devices running the model and the corresponding algorithm, office buildings and hotels, for example, optimized CCHP system running. Optimized operation strategies analyzed under different loads and energy prices, and evaluation of additional investment payback period and the total annual cost of power generation installed capacity of CHP system optimization analysis. Obtained by comparison with the reference run program of economic the corresponding thermoelectric cooling system without energy storage there are some cases from the total annual cost to consider more savings. Optimized operating principles within acceptable additional investment recovery period from the total annual cost of up assessment, draw the Beijing area TOU structure generation design office and hotel building better sharing rate. Also in the energy-saving principle to increase the additional investment recovery period of the energy storage system, the total annual cost is obviously a significant increase. Peak and valley price of office and hotel building in the benchmark tariff adapt the best ratio is also under high benchmark price fluctuation of the gas-fired thermoelectric cooling by the system's additional investment recovery period is not large, and TOU price in the lower benchmark price is very sensitive, this description of the the benchmark electricity and gas price ratio between the the BCHP decisive economic impact factors.

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CLC: > Industrial Technology > Building Science > Housing construction equipment > Air-conditioning, heating, ventilation,and its equipment > Air-conditioning > Air-conditioning refrigeration technology
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