Thermodynamic and economic comparative analyses of a hierarchic gas-gas combined heat and power (CHP) plant coupled with a compressor heat pump

Energy ◽  
2022 ◽  
pp. 123116
Author(s):  
Ryszard Bartnik ◽  
Zbigniew Buryn ◽  
Anna Hnydiuk-Stefan ◽  
Tomasz Kowalczyk
Keyword(s):  
Heat Pump ◽  
Combined Heat And Power ◽  
Comparative Analyses

scholarly journals Thermodynamic and Exergoeconomic Analysis of a Supercritical CO2 Cycle Integrated with a LiBr-H2O Absorption Heat Pump for Combined Heat and Power Generation

2020 ◽  
Vol 10 (1) ◽  
pp. 323 ◽  
Author(s):  
Yi Yang ◽  
Zihua Wang ◽  
Qingya Ma ◽  
Yongquan Lai ◽  
Jiangfeng Wang ◽  
...  
Keyword(s):  
Heat Pump ◽  
Supercritical Co2 ◽  
Waste Heat ◽  
Unit Cost ◽  
Heating System ◽  
Combined Heat And Power ◽  
Economic Benefits ◽  
Ammonia Water ◽  
Absorption Heat Pump ◽  
Comparison Results

In this paper, a novel combined heat and power (CHP) system is proposed in which the waste heat from a supercritical CO2 recompression Brayton cycle (sCO2) is recovered by a LiBr-H2O absorption heat pump (AHP). Thermodynamic and exergoeconomic models are established on the basis of the mass, energy, and cost balance equations. The proposed sCO2/LiBr-H2O AHP system is examined and compared with a stand-alone sCO2 system, a sCO2/DH system (sCO2/direct heating system), and a sCO2/ammonia-water AHP system from the viewpoints of energy, exergy, and exergoeconomics. Parametric studies are performed to reveal the influences of decision variables on the performances of these systems, and the particle swarm optimization (PSO) algorithm is utilized to optimize the system performances. Results show that the sCO2/LiBr-H2O AHP system can obtain an improvement of 13.39% in exergy efficiency and a reduction of 8.66% in total product unit cost compared with the stand-alone sCO2 system. In addition, the sCO2/LiBr-H2O AHP system performs better than sCO2/DH system and sCO2/ammonia-water AHP system do, indicating that the LiBr-H2O AHP is a preferable bottoming cycle for heat production. The detailed parametric analysis, optimization, and comparison results may provide some references in the design and operation of sCO2/AHP system to save energy consumption and provide considerable economic benefits.

Domestic-scale combined heat-and-power system incorporating a heat pump: analysis of a prototype plant

2001 ◽  
Vol 70 (3) ◽  
pp. 215-232 ◽  
Author(s):  
M.A. Smith ◽  
P.C. Few
Keyword(s):  
Power System ◽  
Heat Pump ◽  
Combined Heat And Power

Energy retrofitting of residential buildings—How to couple Combined Heat and Power (CHP) and Heat Pump (HP) for thermal management and off-design operation

2017 ◽  
Vol 151 ◽  
pp. 293-305 ◽  
Author(s):  
Gianluigi Lo Basso ◽  
Benedetto Nastasi ◽  
Ferdinando Salata ◽  
Iacopo Golasi
Keyword(s):  
Thermal Management ◽  
Heat Pump ◽  
Residential Buildings ◽  
Combined Heat And Power

Flexibility quantification and pricing of household heat pump and combined heat and power unit

2019 ◽  
Author(s):  
Zhengjie You ◽  
Babu Kumaran Nalini ◽  
Michel Zade ◽  
Peter Tzscheutschler ◽  
Ulrich Wagner
Keyword(s):  
Power Unit ◽  
Heat Pump ◽  
Combined Heat And Power

scholarly journals Novel Heat-Integrated Hybrid Distillation and Adsorption Process for Coproduction of Cellulosic Ethanol, Heat and Electricity from Actual Lignocellulosic Fermentation Broth

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3377
Author(s):  
Le Cao Nhien ◽  
Nguyen Van Duc Long ◽  
Moonyong Lee
Keyword(s):  
Heat Pump ◽  
Carbon Footprint ◽  
Cellulosic Ethanol ◽  
Adsorption Process ◽  
Sustainable Design ◽  
Fermentation Broth ◽  
Recovery Process ◽  
Combined Heat And Power ◽  
Cost Efficient ◽  
Lignocellulose Feedstock

Cellulosic ethanol (CE) can not only be produced from a nonedible, cheap, and abundant lignocellulose feedstock but also can reduce carbon footprint significantly compared to starch ethanol. Despite great stimulation worldwide, CE production has not yet commercialized because of the complexity of lignocellulose. Therefore, intensive research and development are needed to improve CE technologies. In this study, a cost-efficient and sustainable design was proposed for the coproduction of CE, heat, and electricity from the actual lignocellulosic fermentation broth. First, a conventional coproduction process of CE, heat, and electricity based on hybrid distillation and adsorption (HDA) was simulated and optimized. Subsequently, various heat integrated (HI) techniques such as heat pump (HP), multi-effect distillation (MED), and combined HP-MED were evaluated to improve the CE process. The combined heat and power (CHP) process that utilized the combustible solids of the beer stillage was designed and integrated with the CE process. Structural alternatives were assessed for both economic and environmental impacts. The results show that the proposed HI-HDA process can save 36.9% and 33.6% of total annual costs and carbon footprint, respectively, compared to the conventional CE process. In the proposed HI-HDA coproduction process, the CE recovery process can be self-efficient in energy and the CHP can generate 12.0% more electricity than that in the conventional coproduction process.

Modeling and simulation of a novel combined heat and power system with absorption heat pump based on solar thermal power tower plant

Energy ◽  
2019 ◽  
Vol 186 ◽  
pp. 115842 ◽  
Author(s):  
Xing Li ◽  
Zhifeng Wang ◽  
Ming Yang ◽  
Guofeng Yuan
Keyword(s):  
Power System ◽  
Modeling And Simulation ◽  
Heat Pump ◽  
Thermal Power ◽  
Combined Heat And Power ◽  
Solar Thermal ◽  
Absorption Heat Pump ◽  
Solar Thermal Power

Comparative analyses on a batch-type heat pump dryer using low GWP refrigerants

2019 ◽  
Vol 117 ◽  
pp. 1-13 ◽  
Author(s):  
Akhilesh Singh ◽  
Jahar Sarkar ◽  
Rashmi Rekha Sahoo
Keyword(s):  
Heat Pump ◽  
Comparative Analyses ◽  
Batch Type

Thermodynamic analysis of a novel combined heat and power system incorporating a CO2 heat pump cycle for enhancing flexibility

2019 ◽  
Vol 161 ◽  
pp. 114160 ◽  
Author(s):  
Heng Chen ◽  
Xianhuai Yao ◽  
Juan Li ◽  
Gang Xu ◽  
Yongping Yang ◽  
...  
Keyword(s):  
Power System ◽  
Heat Pump ◽  
Thermodynamic Analysis ◽  
Combined Heat And Power
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