Detail publikace
Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps
Gai, L. Varbanov, P.S. Walmsley, T.G. Klemeš, J.J.
Anglický název
Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
o date, research on heat pumps (HP) has mainly focused on vapour compression heat pumps (VCHP), transcritical heat pumps (TCHP), absorption heat pumps, and their heat integration with processes. Few studies have considered the Joule cycle heat pump (JCHP), which raises several questions. What are the characteristics and specifics of these different heat pumps? How are they different when they integrate with the processes? For different processes, which heat pump is more appropriate? To address these questions, the performance and integration of different types of heat pumps with various processes have been studied through Pinch Methodology. The results show that different heat pumps have their own optimal application range. The new JCHP is suitable for processes in which the temperature changes of source and sink are both massive. The VCHP is more suitable for the source and sink temperatures, which are near-constant. The TCHP is more suitable for sources with small temperature changes and sinks with large temperature changes. This study develops an approach that provides guidance for the selection of heat pumps by applying Process Integration to various combinations of heat pump types and processes. It is shown that the correct choice of heat pump type for each application is of utmost importance, as the Coefficient of Performance can be improved by up to an order of magnitude. By recovering and upgrading process waste heat, heat pumps can save 15-78% of the hot utility depending on the specific process.
Anglický abstrakt
o date, research on heat pumps (HP) has mainly focused on vapour compression heat pumps (VCHP), transcritical heat pumps (TCHP), absorption heat pumps, and their heat integration with processes. Few studies have considered the Joule cycle heat pump (JCHP), which raises several questions. What are the characteristics and specifics of these different heat pumps? How are they different when they integrate with the processes? For different processes, which heat pump is more appropriate? To address these questions, the performance and integration of different types of heat pumps with various processes have been studied through Pinch Methodology. The results show that different heat pumps have their own optimal application range. The new JCHP is suitable for processes in which the temperature changes of source and sink are both massive. The VCHP is more suitable for the source and sink temperatures, which are near-constant. The TCHP is more suitable for sources with small temperature changes and sinks with large temperature changes. This study develops an approach that provides guidance for the selection of heat pumps by applying Process Integration to various combinations of heat pump types and processes. It is shown that the correct choice of heat pump type for each application is of utmost importance, as the Coefficient of Performance can be improved by up to an order of magnitude. By recovering and upgrading process waste heat, heat pumps can save 15-78% of the hot utility depending on the specific process.
Klíčová slova anglicky
Process Integration; heat pumps; Joule cycle heat pump; Pinch Analysis; DESIGN METHOD; RECOVERY; FRAMEWORK; SYSTEMS
Vydáno
03.02.2020
Nakladatel
MDPI AG
Místo
MDPI, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND
ISSN
1996-1073
Číslo
13
Strany od–do
635–635
Počet stran
25
BIBTEX
@article{BUT165357,
author="Limei {Gai} and Šárka {Zemanová} and Petar Sabev {Varbanov} and Jiří {Klemeš},
title="Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps",
year="2020",
number="13",
month="February",
pages="635--635",
publisher="MDPI AG",
address="MDPI, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND",
issn="1996-1073"
}