Electricity savings from the retrofitting of ventilation systems in

Panel: Panel 2. Commercial Technologies and Buildings

Authors:
Per Wickman, AIB Installationskonsult AB, Sweden
Herman Hallstedt, AIB Installationskonsult AB, Sweden

Abstract

The background of this project is the interest displayed by the City of Stockholm in retrofitting its premises.
The objective of this project is to test different steps that will reduce the amount of electricity required to transport air and to describe the methods required to achieve the improvements.

Electricity requirements, pressure settings and airflows have been extensively measured in three different buildings. The results of the measurements show considerable variations in the energy used to transport air in the buildmgs. The results also show that the potential for reducing energy without deterioration of the indoor climate is considerable.

This paper also takes into account the design of systems and the dimensioning of electric motors and fans.

The efficiency of various ventilation systems has been tested and evaluated before and after the implementation of measures. The reduction in energy consumption is in the range of 10-40 percent. The paper also studies the effect on the total costs for operation. A method to attain these substantial improvements is also described.