Publication detail

An Innovative HVAC Control System: Implementation and testing in a vehicular Cabin

FOJTLÍN, M. FIŠER, J. POKORNÝ, J. POVALAČ, A. URBANEC, T. JÍCHA, M.

Original Title

An Innovative HVAC Control System: Implementation and testing in a vehicular Cabin

English Title

An Innovative HVAC Control System: Implementation and testing in a vehicular Cabin

Type

journal article in Web of Science

Language

en

Original Abstract

Personal vehicles undergo rapid development in every imaginable way. However, a concept of managing a cabin thermal environment remains unchanged for decades. The only major improvement has been an automatic HVAC controller with one user's input – temperature. In this case, the temperature is often deceiving because of thermally asymmetric and dynamic nature of the cabins. As a result, the effects of convection and radiation on passengers are not captured in detail what also reduces the potential to meet thermal comfort expectations. Advanced methodologies are available to assess the cabin environment in a fine resolution (e.g. ISO 14505:2006), but these are used mostly in laboratory conditions. The novel idea of this work is to integrate equivalent temperature sensors into a vehicular cabin in proximity of an occupant. Spatial distribution of the sensors is expected to provide detailed information about the local environment that can be used for personalised, comfort driven HVAC control. The focus of the work is to compare results given by the implemented system and a Newton type thermal manikin. Three different ambient settings were examined in a climate chamber. Finally, the results were compared and a good match of equivalent temperatures was found.

English abstract

Personal vehicles undergo rapid development in every imaginable way. However, a concept of managing a cabin thermal environment remains unchanged for decades. The only major improvement has been an automatic HVAC controller with one user's input – temperature. In this case, the temperature is often deceiving because of thermally asymmetric and dynamic nature of the cabins. As a result, the effects of convection and radiation on passengers are not captured in detail what also reduces the potential to meet thermal comfort expectations. Advanced methodologies are available to assess the cabin environment in a fine resolution (e.g. ISO 14505:2006), but these are used mostly in laboratory conditions. The novel idea of this work is to integrate equivalent temperature sensors into a vehicular cabin in proximity of an occupant. Spatial distribution of the sensors is expected to provide detailed information about the local environment that can be used for personalised, comfort driven HVAC control. The focus of the work is to compare results given by the implemented system and a Newton type thermal manikin. Three different ambient settings were examined in a climate chamber. Finally, the results were compared and a good match of equivalent temperatures was found.

Keywords

Vehicular cabin; Thermal manikin; Equivalent temperature; Thermal comfort

Released

13.04.2017

Pages from

64

Pages to

68

Pages count

5

URL

Documents

BibTex


@article{BUT133457,
  author="Miloš {Fojtlín} and Jan {Fišer} and Jan {Pokorný} and Aleš {Povalač} and Tomáš {Urbanec} and Miroslav {Jícha}",
  title="An Innovative HVAC Control System: Implementation and testing in a vehicular Cabin",
  annote="Personal vehicles undergo rapid development in every imaginable way. However, a concept of managing a cabin thermal environment remains unchanged for decades. The only major improvement has been an automatic HVAC controller with one user's input – temperature. In this case, the temperature is often deceiving because of thermally asymmetric and dynamic nature of the cabins. As a result, the effects of convection and radiation on passengers are not captured in detail what also reduces the potential to meet thermal comfort expectations. Advanced methodologies are available to assess the cabin environment in a fine resolution (e.g. ISO 14505:2006), but these are used mostly in laboratory conditions. The novel idea of this work is to integrate equivalent temperature sensors into a vehicular cabin in proximity of an occupant. Spatial distribution of the sensors is expected to provide detailed information about the local environment that can be used for personalised, comfort driven HVAC control. The focus of the work is to compare results given by the implemented system and a Newton type thermal manikin. Three different ambient settings were examined in a climate chamber. Finally, the results were compared and a good match of equivalent temperatures was found.",
  chapter="133457",
  doi="10.1016/j.jtherbio.2017.04.002",
  howpublished="online",
  number="2017",
  volume="70",
  year="2017",
  month="april",
  pages="64--68",
  type="journal article in Web of Science"
}