Numerical study on the heat and mass transfer characteristics of the open-type cross-flow heat-source tower at low ambient temperature

Huang, Yunpeng; Ge, Fenghua; Wang, Cong; Hu, Zicheng

doi:10.1016/j.ijheatmasstransfer.2019.118756

Cited by 17 publications

(3 citation statements)

References 19 publications

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“…As to the energy consumption of the fan (N f ), Figure 4 shows the relationship between the energy consumption of the fan and the air flow rate of HST [48].…”

Section: Mathematical Calculation Model Of the Hst−bhe Cooling Systemmentioning

confidence: 99%

“…As to the energy consumption of the fan (Nf), Figure 4 shows the relationship between the energy consumption of the fan and the air flow rate of HST [48]. It can be seen that the cooling and dehumidification capacity of the HST−BHE cooling system is significantly influenced by the state parameters of space supply air, which are determined by the heat and mass transfer processes occurring in the BHE and HST.…”

mentioning

confidence: 99%

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Characteristics and Application Analysis of a Novel Full Fresh Air System Using Only Geothermal Energy for Space Cooling and Dehumidification

Han,

Li,

et al. 2024

Buildings

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To effectively reduce building energy consumption, a novel full fresh air system with a heat source tower (HST) and a borehole heat exchanger (BHE) was proposed for space cooling and dehumidification in this paper. The cooling system only adopts geothermal energy to produce dry and cold fresh air for space cooling and dehumidification through the BHE and HST, which has the advantage of non-condensate water compared to BHE systems integrated with a fan coil or chilled beam. Based on the established mathematical model of the cooling system, this paper analyzed the system characteristics, feasibility, operation strategy, energy performance, and cost-effectiveness of the proposed model in detail. The results show that the mathematical model has less than 10% error in estimating the system performance compared to the practical HST−BHE experimental set up. Under the specific boundary conditions, the cooling and dehumidification capacity of this system increases with the decrease in the air temperature, air moisture content, and inlet water temperature of the HST. The optimal cooling capacity and the system COP can be achieved when the air–water flow ratio is at 4:3. A case study was conducted in a residential building in Shenyang with an area of about 1800 m2. It was found that this system can fully meet the cooling and dehumidification demand in such a residential building. The operation strategy of the cooling system can be optimized by adjusting the air–water flow ratio from 4:3 to 3:2 during the early cooling season (7 June–1 July) and end cooling season (3 August–1 September). As a result, the average COP of the cooling system during the whole cooling season can be improved from 6.1 to 8.7. Compared with the air source heat pump (ASHP) and the ground source heat pump (GSHP) for space cooling, the proposed cooling system can achieve an energy saving rate of 123% and 26%, respectively. Considering that the BHE of the GSHP can be part of the proposed HST−BHE cooling system, the integration of the HST and GHSP for space cooling (and heating) is strongly recommended in actual applications.

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“…As to the energy consumption of the fan (N f ), Figure 4 shows the relationship between the energy consumption of the fan and the air flow rate of HST [48].…”

Section: Mathematical Calculation Model Of the Hst−bhe Cooling Systemmentioning

confidence: 99%

mentioning

confidence: 99%

Characteristics and Application Analysis of a Novel Full Fresh Air System Using Only Geothermal Energy for Space Cooling and Dehumidification

Han,

Li,

et al. 2024

Buildings

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“…Rajakumar et al (2019) analyzed the effects of thermal radiation and hall current on unsteady MHD free convective flow over a vertical semi-infinite oscillatory plate in the presence of ion slip. Yufei Huang et al (2019) established a mathematical model to analyze the characteristics of heat and mass transfer of the heat source tower in low temperature environment. Using cubic B-spline method Abu Zeid et al ( 2019) studied the mass transfer and thermal radiation effects of free convection flow over a moving vertical plate.…”

Section: Introductionmentioning

confidence: 99%

Heat and Mass Transfer Effects on Linearly Accelerated Isothermal Inclined Plate

Balamurugan¹,

Varma²,

Ramaprasad³

et al. 2022

Frontiers in Heat and Mass Transfer

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Current work reports heat and mass transfer effects on unsteady free convection flow past a linearly accelerated isothermal inclined plate with variable temperature and mass diffusion with thermal radiation. The fluid is gray and non-scattering medium. When time t>0, the plate is accelerated with velocity u 0 t, the plate temperature is raised linearly with respect to time and the mass is diffused from the plate linearly with time. The Mathematical equations represent the present flow problem are solved by Laplace transform method. The influences of significant involved parameters on velocity, temperature and concentration are tested. The rate of heat transfer in terms of Nusselt number and the rate of mass transfer in terms of Sherwood number have also been computed and their impacts for various parameters are discussed through the graphs. Fluid velocity is reduced by radiation parameter R, Prandtl number Pr and inclined angle parameter ϕ. Also the rate of change of heat transfer for water is higher than that of air.

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Liquid desiccant regeneration for advanced air conditioning: A comprehensive review on desiccant materials, regenerators, systems and improvement technologies

She

et al. 2022

Applied Energy

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Numerical study on the heat and mass transfer characteristics of the open-type cross-flow heat-source tower at low ambient temperature

Cited by 17 publications

References 19 publications

Characteristics and Application Analysis of a Novel Full Fresh Air System Using Only Geothermal Energy for Space Cooling and Dehumidification

Characteristics and Application Analysis of a Novel Full Fresh Air System Using Only Geothermal Energy for Space Cooling and Dehumidification

Heat and Mass Transfer Effects on Linearly Accelerated Isothermal Inclined Plate

Liquid desiccant regeneration for advanced air conditioning: A comprehensive review on desiccant materials, regenerators, systems and improvement technologies

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