AIVC - Air Infiltration and Ventilation Centre

Search form

EBC

You are here

Home  |  air conditioning

New design of central units in air heating systems for heating and ventilation in domestic buildings.

Steimle F, Glimpel T, 1989
air conditioning
Bibliographic info: 10th AIVC Conference "Progress and trends in air infiltration and ventilation research" Espoo, Finland, 25-28 September 1989
Languages: English

In central units of air heating systems the supply air flow must meet the actual heating demand. Most of central units for air heating systems have only one fan , which is designed for the maximum air flow at the maximum heating capacity . Fan motors are designed for variable - voltage-drive to enable a reduction of air flow to the necessary value at different heating demands. However, the electrical efficiency is decreasing strongly. The supply air fan is working mostly under part - load conditions . Therefore the control strategy used now is very ineffective . It is suggested to install 2 fans in an air handling unit. One of them is working at full capacity all over the year , but the second one starts only to deliver the additional air flow required in case of higher heat demand. Charts basing on calculations will demonstrate the relation between outdoor air temperature and the demand of energy for both systems.


(Login or register to download)

Related publications

23 May 2019 | New Perspectives on Kitchen Ventilation
INIVE eeig,
25 April 2019 | Ductwork airtightness measurements: protocols
INIVE eeig,
This project deals with reviewing EBC's Annex 5: "Air Infiltration and Ventilation Cent
AIVC,