Heat pump integration in non-continuous industrial processes by Dynamic Pinch Analysis Targeting

Walden, Jasper V.M.; Wellig, Beat; Stathopoulos, Panagiotis

doi:10.1016/j.apenergy.2023.121933

Cited by 11 publications

(2 citation statements)

References 25 publications

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“…Generally speaking, mass and/or heat integration are performed to fully utilize the available resources, being material or energy, within a plant so as to minimize or eliminate the need for external resources or waste generation, thus leading to improved plant economics [7,8]. Pinch technology is commonly used to integrate heat within a unit, e.g., distillation columns, or the whole plant, or to retrofit existing heat exchanger networks [9][10][11][12][13]. The main rules in applying pinch technology require the observation that no external cooling is performed above the pinch, whereas below the pinch, there is no external heating, and heat does not transfer across the pinch.…”

Section: Introductionmentioning

confidence: 99%

Energy Optimization through Heat and Power Integration on a Chlorobenzenes Production Plant

Alqahtani,

Alrefai,

Almutlaq

et al. 2024

Processes

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In this research work, an attempt has been made to address the heat and power integration opportunities for the process of the chlorination of benzene. This process produces a mixture of chlorobenzenes. To increase the production of the dichlorobenzene portion, the ratio of chlorine to benzene is typically 2:1. A process simulation model is designed using Aspen Plus for the production of 70,000 tons/year of dichlorobenzene via the reaction of liquid benzene with gaseous chlorine. Energy analysis is performed for the effective utilization of the utilities by networking the heat exchangers. This modification reduced the process heating and cooling requirements by 56.7% and 12.7%, respectively, and a reduction by 35.4% in the operating costs is achieved, while the annualized fixed cost increased by 9.6%; these changes resulted in savings in the total annual costs of about 10.9%.

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Section: Introductionmentioning

confidence: 99%

Energy Optimization through Heat and Power Integration on a Chlorobenzenes Production Plant

Alqahtani,

Alrefai,

Almutlaq

et al. 2024

Processes

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show abstract

“…As the amount of heat supply from HVAC systems changes, the room temperature can still remain stable and within a comfortable level for a long period due to the thermal inertia of the building. Among the various pieces of HVAC equipment, heat pumps have been regarded as efficient mechanical devices that produce heating energy from renewable sources such as solar energy, ambient air, geothermal energy or waste heat [28,29]. Wang et al [30] developed a new solar-airsource heat pump building energy supply system with energy storage that maintains efficient operation during extreme weather in winter and summer.…”

Section: Introductionmentioning

confidence: 99%

Operational Strategy of a DC Inverter Heat Pump System Considering PV Power Fluctuation and Demand-Side Load Characteristics

Li,

Lu,

Sun

et al. 2024

Buildings

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With the increase in application of solar PV systems, it is of great significance to develop and investigate direct current (DC)-powered equipment in buildings with flexible operational strategies. A promising piece of building equipment integrated in PV-powered buildings, DC inverter heat pump systems often operate with strategies either focused on the power supply side or on the building demand side. In this regard, the aim of this study was to investigate the operational strategy of a DC inverter heat pump system for application in an office building with a PV power system. Firstly, the PV power fluctuation and demand-side load characteristics were analyzed. Then, a series of heat transfer and heat pump system models were developed. A reference building model was developed for simulating the performance of the system. A control logic of the DC inverter heat pump was proposed with a certain level of flexibility and capability considering both the characteristics of the PV power generation and the demand-side heating load. MATLAB/Simulink 2021 software was used for simulation. The simulation results show that the DC inverter heat pump is able to regulate its own power according to the change signal of the bus voltage such that the DC distribution network can achieve power balance and thus provide enough energy for a room. This study can provide a reference for developing flexible operational strategies for DC inverter heat pump systems. The proposed strategy can also help to improve the systems’ performance when they are applied in buildings with distributed PV systems.

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Flexible operation and integration of high-temperature heat pumps using large temperature glides

Knorr,

Schlosser,

Horstmann

et al. 2024

Applied Energy

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Heat pump integration in non-continuous industrial processes by Dynamic Pinch Analysis Targeting

Cited by 11 publications

References 25 publications

Energy Optimization through Heat and Power Integration on a Chlorobenzenes Production Plant

Energy Optimization through Heat and Power Integration on a Chlorobenzenes Production Plant

Operational Strategy of a DC Inverter Heat Pump System Considering PV Power Fluctuation and Demand-Side Load Characteristics

Flexible operation and integration of high-temperature heat pumps using large temperature glides

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