Performance assessment of radiant cooling system integrated with desiccant assisted DOAS with solar regeneration

Khan, Yasin; Singh, Gaurav; Mathur, Jyotirmay; Bhandari, Mahabir; Srivastava, Prateek

doi:10.1016/j.applthermaleng.2017.06.052

Performance assessment of radiant cooling system integrated with desiccant assisted DOAS with solar regeneration

Journal Article · Tue Jun 13 00:00:00 EDT 2017 · Applied Thermal Engineering

DOI:https://doi.org/10.1016/j.applthermaleng.2017.06.052· OSTI ID:1376508

^[1]; Singh, Gaurav ^[1]; Mathur, Jyotirmay ^[1]; Bhandari, Mahabir ^[2]; Srivastava, Prateek ^[1]

Malaviya National Inst. of Technology, Jaipur (India)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

The Radiant cooling system integrated with Dedicated Outdoor Air System (DOAS) is a viable substitution for conventional all air system in order to reduce primary energy consumption, as it decouples the cooling and ventilation task. In DOAS major portion of energy is consumed in cooling coil where it dehumidifies the process supply air. This study describes an alternate solution for dehumidification, with the substitution of the desiccant wheel with solar regeneration in place of a chilled water coil based dehumidifier. In this paper, simulations were carried out using EnergyPlus on a reference medium office building to investigate the contribution of solar energy towards the total energy consumption of desiccant assisted DOAS with radiant cooling system. To evaluate the system performance and energy saving potential, desiccant based DOAS is compared with cooling coil assisted DOAS integrated with Radiant cooling system. Simulations were carried out for different solar collector area to evaluate primary energy savings. Results indicate that from 7.4 % to 28.6 % energy saving (according to different collector area) can be achieved due to the solar regeneration in desiccant assisted DOAS, the impact of different solar collector area on potential of energy savings is also described.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1376508

Alternate ID(s):: OSTI ID: 1495884

Journal Information:: Applied Thermal Engineering, Journal Name: Applied Thermal Engineering Journal Issue: C Vol. 124; ISSN 1359-4311

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Comparative assessment of different air‐conditioning systems for nearly/net zero‐energy buildings Singh, Gaurav; Das, Ranjan International Journal of Energy Research, Vol. 44, Issue 5 https://doi.org/10.1002/er.5065	journal	April 2020
Energy Saving Potential of an Air-Conditioning System with Desiccant and Solar Assisted Ventilation Singh, Gaurav; Das, Ranjan Advances in Mechanical Engineering https://doi.org/10.1007/978-981-15-0124-1_119	book	January 2020

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