Operating characteristics and performance evaluation of carbon dioxide heat pump driven liquid desiccant dehumidification systems: A comparative study

Cui, Qi; Qu, Hongshuo; Sun, Bo; Gao, Enyuan; Zhang, Xiaosong

doi:10.1016/j.enconman.2022.115298

Cited by 18 publications

(2 citation statements)

References 30 publications

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“…The system gave a maximum COP, moisture removal rate, and dehumidification efficiency equal to 2.17, 4.87 g/s, and 73.54%, respectively. Cui et al [13] proposed carbon dioxide heat pump-driven liquid desiccant dehumidification. The results suggested that the power consumption and dehumidification performance of the desiccant dehumidification systems were reduced and improved by a maximum of 51.67% and 106.89%, respectively, compared with condensing dehumidification.…”

Section: Introductionmentioning

confidence: 99%

An Anti-Condensation Radiant Heating Floor System in Buildings under Moistening Weather

Liang

Lan

et al. 2023

Sustainability

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In most regions of southern China, condensation frequently occurs on building surfaces during the period from March to April. This phenomenon has been affecting people’s safety and structural properties. This article proposes an innovative anti-condensation floor system based on the reverse Carnot cycle. The evaporation side treats the air and reduces the moisture content, and the heat extracted from the condensation side is recovered by a heat exchanger and transferred to the floor through capillary mats. Simulation studies of the dynamic operation performance have been conducted through the TRNSYS 18 software. The results show that an innovative anti-condensation floor system can effectively keep the floor dry in Guilin. At the same time, regarding the indoor comfort level index, the PMV value is within ±0.5, and the energy consumption of the system is 42% less than that of the cooling dehumidification system. The system also performs well in representative cities where the air moisture content is less than 12 g/kg. This article also provides a reference for the feasibility of radiant floor systems in humid climate areas.

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Section: Introductionmentioning

confidence: 99%

An Anti-Condensation Radiant Heating Floor System in Buildings under Moistening Weather

Liang

Lan

et al. 2023

Sustainability

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“…Many studies are carried out on various hybrid liquid desiccant air conditioning systems (HLDASs). One type of such system is the heat pump-driven liquid desiccant air conditioning system (HPLDAS), [2][3][4][5][6][7][8] in which latent and sensible loads are controlled independently by LDAS and heat pump, respectively. In these systems, condensation heat can be used for solution regeneration, whereas evaporator cooling load can be used for solution cooling.…”

Section: Introductionmentioning

confidence: 99%

Design and energy analysis of 100% fresh air based hybrid liquid desiccant air conditioning system – A case study of a thermal power plant TG building

Reddy¹,

Balasubramanian

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Turbine generator (TG) buildings in thermal power plants require chilled water air conditioning systems (CWAS) to control the temperature and humidity of heat dissipated rooms, which are energy-intensive and non-eco-friendly. As an alternative, a novel refrigerant-free 100% fresh air (FA)-based hybrid liquid desiccant air conditioning system (HLDAS) is proposed and presented the methodology to design it for a case study of TG building of 2X660 MW power plant in the most humid climate. The cooling and heating requirements for HLDAS are met with a cooling tower and potential waste heat from the plant. To assess the saving potential of the proposed system, annual energy consumption for the HLDAS, 10% FA-based CWAS (CWAS-1) and 100% FA-based CWAS (CWAS-2) are quantified and compared. The results revealed that HLDAS consume 55% and 31% of CWAS-1 and CWAS-2 power consumption, respectively. Low-grade potential waste heat from the plant is estimated and found to be sufficient for solution regeneration. The proposed system is extremely energy efficient for 100% FA applications where low-grade waste heat is available. In addition to this, since there are no ODP gases associated with the proposed system, the proposed HLDAS is recommendable in view of environmentally friendly technology and indoor air quality (since it is a 100% FA-based system). This work will support HVAC engineers and researchers in designing the LDAS for a given air conditioning application.

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Heat flow topology-driven thermo-mass decoupling strategy: Cross-scale regularization modeling and optimization analysis

Cao,

Wang,

Tang

et al. 2024

Applied Energy

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Operating characteristics and performance evaluation of carbon dioxide heat pump driven liquid desiccant dehumidification systems: A comparative study

Cited by 18 publications

References 30 publications

An Anti-Condensation Radiant Heating Floor System in Buildings under Moistening Weather

An Anti-Condensation Radiant Heating Floor System in Buildings under Moistening Weather

Design and energy analysis of 100% fresh air based hybrid liquid desiccant air conditioning system – A case study of a thermal power plant TG building

Heat flow topology-driven thermo-mass decoupling strategy: Cross-scale regularization modeling and optimization analysis

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