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ENERGY EFFICIENCY EVALUATION OF A CONTROLLED VENTILATION SYSTEM WITH CANADIAN WELL FOR LOW ENERGY HOUSES - CASE STUDY

Dr. Florin Domnita, Dr. Raluca Moldovan, Assoc. Prof. Dr. Peter Kapalo, Dr. Tania Rus, Dr. Dana Ilutiu-Varvara

First published: 2017-06-20https://doi.org/10.5593/sgem2017/42/s17.030View metrics

Abstract

The continuous improvement of building insulation and air tightness means that controlled ventilation is becoming more important every day. The ground-air heat exchanger makes a considerable contribution to this, especially when used in conjunction with an air heat exchanger unit. As well as increasing the quality of life within the building, this also provides significant energy cost reductions by using the embodied ground energy to pre-condition the incoming ventilation air. The Canadian wells use geothermal energy stored in the ground at low depths in order to provide pre-heated or pre-cooled fresh air for low energy houses. The following parameters are involved in dimensioning the Canadian wells systems: the necessary fresh airflow rate, length of pipes, pipes diameter, the speed of air flow through pipes, the soil characteristics, the mounting depth of pipes. The case study is focused on designing and analyzing, in terms of energy, the ventilation system with ground-air heat exchanger for an energy saving house. For these purposes the GAEA software application is used. Complying with the simulations performed with the GAEA application, the analyzed Canadian well system leads to important gains of heat in the cold seasons and cool in the warm periods, contributing this way to the reduction of energetic consumption of passive houses for heating and cooling.

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Publication details

Title
ENERGY EFFICIENCY EVALUATION OF A CONTROLLED VENTILATION SYSTEM WITH CANADIAN WELL FOR LOW ENERGY HOUSES - CASE STUDY
Authors
Dr. Florin Domnita, Dr. Raluca Moldovan, Assoc. Prof. Dr. Peter Kapalo, Dr. Tania Rus, Dr. Dana Ilutiu-Varvara
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies
Publisher
STEF92 Technology
Year
2017
Pages
231-237
SWS Citekey
Domnita201717231237
ISSN
1314-2704
ISBN
978-619-7408-07-2
Language
en
Publication type
Conference Paper
Keywords
ventilationgroundairheat exchangerCanadian well.
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