Detail publikace

An innovative HVAC control system: Comparison of the system outputs to comfort votes

FIŠER, J. POKORNÝ, J. FOJTLÍN, M. TOMA, R.

Originální název

An innovative HVAC control system: Comparison of the system outputs to comfort votes

Typ

abstrakt

Jazyk

angličtina

Originální abstrakt

Human thermal comfort in vehicular cabins has been broadly discussed in various contents. The most actual topics relate to efficient energy utilisation and enhancement of thermal comfort experience – especially in electric passenger vehicles. In fact, these two factors are contradictory at present; therefore, new concepts of HVAC management are being investigated. The presented study shows progress in the iHVAC project (Fišer et al., 2015; Fojtlín et al., 2017) that serves as a support system for a driver and passengers. The aim of the project is real-time evaluation of thermal conditions in the cabin using compact equivalent temperature sensors. To do so, methodology of the Comfort zone diagram and the MTV index (Mean Thermal Vote) are exploited. The concept has been tested previously against a newton type Manikin with good results. Now, the system performance was examined in two scenarios against a pool of eight volunteers. Firstly, the test vehicle was preconditioned to 0 °C and volunteers wore prescribed clothing (0.75 clo). In the second run, the chamber temperature was 10 °C and lighter clothing was worn (0.5 clo). The test protocol of both scenarios comprises preconditioning (60 min, tamb 23 °C), seating in a precooled vehicle (45 min, tamb 0 and 10 °C), and at the same time initiation of the HVAC system set to AUTO 24 °C. The volunteers were asked to rate the thermal comfort and sensation in the cabin every 3 min. These votes were compared with the system outputs and good match was found on the head, hands, and torso. The predictions were least accurate for legs, feet, and arms. Moreover, the methodology has its limitations, mainly to its applicability in stationary conditions, and further research is needed.

Klíčová slova

car cabin, thermal comfort, thermal sensation, measurement, predction

Autoři

FIŠER, J.; POKORNÝ, J.; FOJTLÍN, M.; TOMA, R.

Vydáno

6. 11. 2017

Nakladatel

International Society for Environmental Ergonomics.

Místo

Kobe, Japonsko

Strany od

39

Strany do

39

Strany počet

1

URL

http://icee2017.h.kobe-u.ac.jp/ICEE2017_c/Welcome.html

BibTex

@misc{BUT146250,
  author="Miloš {Fojtlín} and Jan {Fišer} and Jan {Pokorný} and Róbert {Toma} and Miroslav {Jícha}",
  title="An innovative HVAC control system: Comparison of the system outputs to comfort votes",
  year="2017",
  pages="39--39",
  publisher="International Society for Environmental Ergonomics.",
  address="Kobe, Japonsko",
  url="http://icee2017.h.kobe-u.ac.jp/ICEE2017_c/Welcome.html",
  note="abstract"
}