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Highly efficient desiccant-coated heat exchanger-based heat pump to decarbonize rail transportation
ID
Shao, Zhao
(
Avtor
),
ID
Wang, Z. G.
(
Avtor
),
ID
Poredoš, Primož
(
Avtor
),
ID
Ge, T. S.
(
Avtor
),
ID
Wang, Ruzhu
(
Avtor
)
PDF - Predstavitvena datoteka. Vsebina dokumenta nedostopna do 22.02.2025.
MD5: 0343676F308A55FBF70C327FD421642D
URL - Izvorni URL, za dostop obiščite
https://www.sciencedirect.com/science/article/pii/S0360544223004085
Galerija slik
Izvleček
In the rail sector, air conditioning accounts for 30% of the total operational energy consumption, thus, it is crucial to enhance the efficiency of air conditioning units (ACUs) to reduce overall energy consumption. Traditional ACUs for train vehicles usually have a low coefficient of performance (COP), often less than 2, because of condensation-based dehumidification and a consequent reheating process and also the restricted spaces to install ACUs on the rooftop of the cabinet. Herein, we present a novel ACU with an integrated structural design that uses desiccant-coated heat exchangers (DCHEs) coupled with heat pumps, providing comfortable air conditioning on the metro or high-speed trains. This approach provides a direct method for reducing the air temperature and humidity simultaneously, thus realizing the decoupling of temperature and humidity treatments on a single heat exchanger. Using this design, experimental results show that the proposed system can improve the COP by ∼40% under standard conditions compared with existing ACUs (2.5 vs. 1.8). In addition, the proposed system achieves the highest COP of 2.8 under Shenzhen ground conditions (high humidity and temperature conditions) and exhibits high adaptability to various climate zones. The application of the DCHE-based system in the rail sector can significantly contribute to the decarbonization of the sector and make rail transportation sustainable and ready for a green transformation.
Jezik:
Angleški jezik
Ključne besede:
heat pumps
,
sorption materials
,
desiccant coated heat exchangers
,
air-conditioning
,
rail sector
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FS - Fakulteta za strojništvo
Status publikacije:
Objavljeno
Različica publikacije:
Recenzirani rokopis
Leto izida:
2023
Št. strani:
11 str.
Številčenje:
Vol. 271, art.127014
PID:
20.500.12556/RUL-154505
UDK:
621.577
ISSN pri članku:
1873-6785
DOI:
10.1016/j.energy.2023.127014
COBISS.SI-ID:
185939971
Datum objave v RUL:
19.02.2024
Število ogledov:
547
Število prenosov:
21
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Energy
Založnik:
Elsevier Science
ISSN:
1873-6785
COBISS.SI-ID:
15306011
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
toplotne črpalke
,
energetska učinkovitost
,
sorpcijska sredstva
,
desikativni prenosniki toplote
,
železniški promet
Projekti
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
National Natural Science Foundation of China
Številka projekta:
51336004
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
National Natural Science Foundation of China
Številka projekta:
51922070
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