Economic feasibility of combined cooling, heating, and power (CCHP) systems considering electricity standby tariffs

Ahn, Hyeunguk; Freihaut, James D.; Rim, Donghyun

doi:10.1016/j.energy.2018.11.126

Cited by 41 publications

(12 citation statements)

References 36 publications

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“…Vapor Recovery Units (VRUs) are characterized by high operating costs due to significant energy consumption (Ahn et al, 2019). This fact creates the challenge of developing methods to reduce the consumption of VRUs electrical energy.…”

Section: Methods Of Reducing Electricity Consumptionmentioning

confidence: 99%

Improving the economic efficiency of vapor recovery units at hydrocarbon loading terminals

Fetisov

Mohammadi

Pshenin

et al. 2021

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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The article discusses effective ways to reduce the cost of operating vapor recovery units and increase the financial result of their operation. The first method is based on regulation of the power-on time of the installation. The second method is based on using the potential energy of the fluid flow of the gravity section to supply the system equipment with energy. The potential savings on VRU maintenance will reduce the risks of payback of installations. The proposed methods will have a significant impact on society, as the possibility of a wider distribution of installations that protect the environment from emissions of volatile organic compounds into the atmosphere will become available.

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Section: Methods Of Reducing Electricity Consumptionmentioning

confidence: 99%

Improving the economic efficiency of vapor recovery units at hydrocarbon loading terminals

Fetisov

Mohammadi

Pshenin

et al. 2021

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Constraint (9) indicates that the cooling generated by the hybrid chiller is provided for the cooling demand of end-user. Constraint (10) shows that the cooling generated by the absorption chiller is assumed to account for fifty percent in total cooling energy. Constraint (11) states that the heating energy generated by the heating exchanger should satisfy the heating demand of the end-user.…”

Section: Constraintsmentioning

confidence: 99%

“…The single performance (e.g., economic, environmental criteria) of CCHP systems can be improved by optimal configurations and operation strategies [6][7][8][9]. For example, Ahn et al [10] focused on performance analysis for CCHP systems based on different time period operational costs and payback periods by considering various local climates, power generation equipment sizes, and utility tariff structures. Since carbon dioxide emission is related to global warming, He et al [11] proposed a low-carbon cost optimization model considering the constraints of electric and natural gas characters to reduce CO2 emission.…”

Section: Introductionmentioning

confidence: 99%

Sustainability Assessment of Combined Cooling, Heating, and Power Systems under Carbon Emission Regulations

2019

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The combined cooling, heating, and power (CCHP) system, which is a sustainable distributed energy system, has attracted increasing attention due to the associated economic, environmental, and energy benefits. Currently, the enforcement of carbon emission regulations has become an increasingly concerning issue globally. In this paper, a multi-objective optimization model is established to evaluate the CCHP system under two different carbon emission regulation policies in terms of economic benefit, environmental sustainability, and energy advantage. A nonlinear programming optimization model is formulated and solved by using the particle swarm optimization (PSO) algorithm. The results from the case studies demonstrate that when considering carbon tax regulation, the cost savings of the optimal CCHP system strategy were on average 10.0%, 9.1%, 17.0%, 22.1%, and 20.9% for the office, supermarket, hotel, school, and hospital in China, respectively, compared with the conventional energy supply system. On the other hand, when considering carbon trading regulation, the optimal CCHP system strategy can lead to a 10.0%, 8.9%, 16.8%, 21.6%, and 20.5% cost-saving for the five different building categories, respectively. Furthermore, the optimal CCHP system strategy for the five buildings, i.e., an average of 39.6% carbon dioxide emission (CDE) reduction and 26.5% primary energy consumption (PEC) saving, can be achieved under carbon emission regulations.

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“…In the above simulation models, the operation strategy of CCHP is FTL or FEL, or one of them is adopted under certain conditions. Comparison of exhaust-gas-and-hot-water-driven absorption chiller (AC) and another three cooling modes, including AC combined with electric chiller (EC), AC combined with gas-fired absorption chiller (GFC), and AC combined with ground source heat pump (GSHP) based on the simulation model, is made in reference [10]. e results show that the CCHP system with GSHP under FEL strategy has the best comprehensive performance.…”

Section: Introductionmentioning

confidence: 99%

“…However, it is uncertain whether the commonly used operation strategies, FTL and FEL, are the least cost strategies, which are closely related to the operating environment of the CCHP system, such as cooling and heating load, electricity price, and so on. e optimal combination of the power and heat sources' outputs to satisfy heat and power demand of system and operational constraints is known as CHP (or CCHP) economic dispatch (CHPED) problem and has attracted a lot of interests, especially in the electricity market environment [10,[13][14][15][16]. e CHPED problem is a complex optimization problem to meet the demand of cooling, heating, and power loads at the same time.…”

Section: Introductionmentioning

confidence: 99%

A Simulation Method Based on the Candidate Operation Strategies for the Combined Cooling, Heat, and Power (CCHP) System

Zhu

Zou

et al. 2021

Mathematical Problems in Engineering

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With the change of the distributed Combined cooling, heat, and power (CCHP) system operation environment, such as the operation under the power market, CCHP needs to adopt the operation strategy based on cost minimization instead of the traditional following thermal load strategy (FTL). However, the current CCHP system simulation adopts FTL or FEL or a combination of the two; whether these strategies have the least cost has not been confirmed. In this paper, all kinds of operation strategies of the CCHP with two cooling methods are investigated according to the KKT conditions (Karush–Kuhn–Tucker conditions) of the optimal operation model. Among all the feasible operation strategies, most of them do not meet the KKT condition, and only 43 strategies may be the optimal ones that constitute candidate set. The conditions of the optimal operation strategy in the candidate set are obtained, and it is easy to calculate, so the optimal operation strategy can be easily selected from the candidate set. Some previously unnoticed strategies, for example, TEWM, PE-FPG, FTL-R, and FEL-L, may become optimal. A rule-based CCHP simulation method is established that selects the strategy with minimal cost as the optimal strategy from the candidate strategy set. The presented method has small time consumption and can simulate the optimal operation. The case study verified the characteristics of the proposed simulation method.

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Economic feasibility of combined cooling, heating, and power (CCHP) systems considering electricity standby tariffs

Cited by 41 publications

References 36 publications

Improving the economic efficiency of vapor recovery units at hydrocarbon loading terminals

Improving the economic efficiency of vapor recovery units at hydrocarbon loading terminals

Sustainability Assessment of Combined Cooling, Heating, and Power Systems under Carbon Emission Regulations

A Simulation Method Based on the Candidate Operation Strategies for the Combined Cooling, Heat, and Power (CCHP) System

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