Heat pumps in industrial processes—An optimization methodology

Wallin, Erik; Franck, Per-Åke; Berntsson, Thore

doi:10.1016/0890-4332(90)90092-x

Cited by 28 publications

(12 citation statements)

References 1 publication

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“…A large temperature lift through a heat pump should be avoided because it can reduce the COP of the heat pump [27]. Here, an approach is presented to systematically determine the energyoptimum operating conditions of a heat pump, leading to the smallest possible temperature lift, while the desired heat integration can still be fully realized.…”

Section: Operating Conditions Of Heat Pumpsmentioning

confidence: 99%

“…Due to the high capital cost of heat pumps [27], and to reduce the number of heat pumps used, an assumption is made that a heat pump is allowed to simultaneously absorb heat from different process hot streams and reject heat to different process cold streams. Consequently, multiple heat exchangers may need to be applied in the heat pump system.…”

Section: Process Streams Integrated With Heat Pumpsmentioning

confidence: 99%

“…Townsend and Linnhoff [26] proposed that a heat pump should absorb heat below the pinch temperature and reject it above, namely the across-pinch rule. In further research, Wallin et al [27] adopted Composite Curves to guide the choice of heat pump types for various industrial processes and revealed the heat load limits of heat pump installations. Benstead and Sharman [28] matched heat pump with the Grand Composite Curve (GCC) of a process using the mirror image technique, which is relatively simple and clear.…”

Section: Introductionmentioning

confidence: 99%

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Heat integration of heat pump assisted distillation into the overall process

2016

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Section: Operating Conditions Of Heat Pumpsmentioning

confidence: 99%

Section: Process Streams Integrated With Heat Pumpsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Heat integration of heat pump assisted distillation into the overall process

2016

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“…The analysis of the process composite curves helps to identify proper heat pump types and temperature levels. The same authors (Wallin and Berntsson, 1990) propose a methodology to optimize heat source and heat sink temperatures, heat pumps size and the choice of streams used by the heat pump. In his thesis, Leyland (2002), has developed a multi objective optimization approach to define the optimal placement of temperature levels in a heat cascade.…”

Section: Introductionmentioning

confidence: 99%

Process Integration and Opportunities for Heat Pumps in Industrial Processes

Becker¹,

Maréchal²,

Vuillermoz³

2011

Int. J. Thermo

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Process integration methods allow one optimizing industrial processes. The main goals are decreasing energy demand and operating costs as well as reducing pollutants emissions. High fuel costs promote installations of heat pumps. In a heat pump, process waste heat is valorized by electrical power to produce higher quality heat. This energy is used to satisfy a part of the process demand so that less fuel is required and CO 2 emission will decrease. Based on pinch analysis, this paper presents a methodology to identify heat pump opportunities in industrial processes. The method considers the whole process including utilities and the energy conversion system. A combined analysis which considers thermal and material streams in the process is realized to optimize the heat recovery and the integration of energy conversion units. By analogy, all water streams are listed and the potential of water recuperation is also calculated. The combination of appropriate refrigeration and heat pump cycles leads to an important energy saving potential. The respective flow rates are defined by optimization. The application case of a typical dairy process is used to calculate the energy and operating cost savings potential as well as its corresponding investment costs and payback rates.

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“…In practice, an appropriate integration of heat pumps requires the identification of the optimal heat pump(s) and of its operating conditions. In the literature, different approaches for process integration can be found: Wallin and Berntsson (1990) propose a methodology to optimize the temperatures of the heat source and the heat sink, the size of the heat pumps and the choice of the streams used by the heat pump. Bagajewicz and Barbaro (2003) consider temperature levels as decision variables in order to avoid discrete temperature levels which need a fine interval partition to find good solutions.…”

Section: Introductionmentioning

confidence: 99%

A Multi-Objective Optimization Method to integrate Heat Pumps in Industrial Processes

Becker

Spinato

Maréchal

2011

Computer Aided Chemical Engineering

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Aim of process integration methods is to increase the efficiency of industrial processes by using pinch analysis combined with process design methods. In this context, appropriate integrated utilities offer promising opportunities to reduce energy consumption, operating costs and pollutants emissions. Energy integration methods are able to integrate any type of predefined utility, but so far there is no systematic approach to generate potential utilities models based on their technology limits. This work focusses on the integration of industrial heat pumps and the development of a corresponding heat pump data base. This latter offers the possibility to integrate different heat pump types to any process, in a flexible and systematic way. A methodology, integrating the heat pump data base in an energy integration problem, and using multi objective optimization in order to identify optimal solutions, is presented. The results of a brewery process are presented and analyzed.

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Heat pumps in industrial processes—An optimization methodology

Cited by 28 publications

References 1 publication

Heat integration of heat pump assisted distillation into the overall process

Heat integration of heat pump assisted distillation into the overall process

Process Integration and Opportunities for Heat Pumps in Industrial Processes

A Multi-Objective Optimization Method to integrate Heat Pumps in Industrial Processes

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