Measurements and computations of ventilation efficiency and temperature efficiency in a ventilated room

Chen Qingyan, Jan Van Der Kooi, At Meyers

Research output: Journal article publicationJournal articleAcademic researchpeer-review

36 Citations (Scopus)


In order to improve the indoor air quality in a room and to save energy, the air movement and contamination distributions in the room with ventilation have been studied experimentally and numerically. The experiment is carried out in a full-scale climate room with different air supply systems, heat gains from the venetian blinds and ventilation rates. The measurements concern room airflow patterns and air temperature, velocity and contamination concentration fields, etc. The airflow computer program PHOENICS and the cooling load program ACCURACY have been applied for the numerical simulations. PHOENICS solves the conservation equations of air mass, momentum, energy, concentration, kinetic energy and dissipation rate of kinetic energy. ACCURACY, which considers the influence of room air temperature distributions, is employed for the determination of cooling load, wall surface temperatures and convective heat transfer on room enclosure surfaces. These are the boundary conditions required by PHOENICS. The agreements between the computations and the measurements are good. The ventilation efficiency and temperature efficiency which are used for evaluation of indoor air quality and energy consumption are reported for each case. Additional application of these computations to annual energy analysis is also discussed.

Original languageEnglish
Pages (from-to)85-99
Number of pages15
JournalEnergy and Buildings
Issue number2
Publication statusPublished - 21 Sept 1988


  • air distribution
  • computation
  • energy conservation
  • Indoor air quality
  • measurement
  • ventilation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering
  • Electrical and Electronic Engineering


Dive into the research topics of 'Measurements and computations of ventilation efficiency and temperature efficiency in a ventilated room'. Together they form a unique fingerprint.

Cite this