Theoretical and Experimental Investigation of a Heat Exchanger Suitable for a Hybrid Ventilation System
Davidsson, Henrik LU ; Bernardo, Ricardo LU
and Hellström, Bengt
LU
(2013)
In Buildings
3.
p.18-38
- Abstract
- A key component in low energy houses is the heat recovery from the ventilation air. Over recent years, the most frequently used ventilation type is the mechanical ventilation with heat recovery. This kind of ventilation results in high heat recovery but does unfortunately consume a considerable amount of electrical energy. Natural or hybrid ventilation has the potential to consume less electricity but normally lacks heat recovery, leading to high-energy consumption for heating, and potentially low comfort. This article describes an investigation of a natural/hybrid ventilation system equipped with heat recovery. One of the key challenges in designing the heat exchanger is to keep the pressure drop low. At the same time the heat recovery... (More)
- A key component in low energy houses is the heat recovery from the ventilation air. Over recent years, the most frequently used ventilation type is the mechanical ventilation with heat recovery. This kind of ventilation results in high heat recovery but does unfortunately consume a considerable amount of electrical energy. Natural or hybrid ventilation has the potential to consume less electricity but normally lacks heat recovery, leading to high-energy consumption for heating, and potentially low comfort. This article describes an investigation of a natural/hybrid ventilation system equipped with heat recovery. One of the key challenges in designing the heat exchanger is to keep the pressure drop low. At the same time the heat recovery rate has to be high. The results from the measurements show that it is possible to design a water-to-air heat exchanger with a temperature efficiency of approximately 80% with a pressure drop of about 1 Pa at air flows corresponding to 0.35 L/(s∙m²) building area. This type of ventilation system has the potential to offer a high thermal comfort, high heat recovery rate at the same time as the electrical consumption from fans is kept low. Old buildings with a natural ventilation system without heat recovery could also be retrofitted with this type of ventilation system. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3567504
- author
- Davidsson, Henrik
LU
; Bernardo, Ricardo
LU
and Hellström, Bengt
LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- hybrid ventilation, heat recovery, low pressure drop
- in
- Buildings
- volume
- 3
- pages
- 18 - 38
- publisher
- MDPI AG
- external identifiers
-
- scopus:84925661235
- ISSN
- 2075-5309
- DOI
- 10.3390/buildings3010018
- language
- English
- LU publication?
- yes
- id
- 3fd8c65f-3683-4532-a895-51e5ada91742 (old id 3567504)
- alternative location
- http://www.mdpi.com/2075-5309/3/1/18
- date added to LUP
- 2016-04-01 13:20:18
- date last changed
- 2024-06-11 12:00:28
@article{3fd8c65f-3683-4532-a895-51e5ada91742,
abstract = {{A key component in low energy houses is the heat recovery from the ventilation air. Over recent years, the most frequently used ventilation type is the mechanical ventilation with heat recovery. This kind of ventilation results in high heat recovery but does unfortunately consume a considerable amount of electrical energy. Natural or hybrid ventilation has the potential to consume less electricity but normally lacks heat recovery, leading to high-energy consumption for heating, and potentially low comfort. This article describes an investigation of a natural/hybrid ventilation system equipped with heat recovery. One of the key challenges in designing the heat exchanger is to keep the pressure drop low. At the same time the heat recovery rate has to be high. The results from the measurements show that it is possible to design a water-to-air heat exchanger with a temperature efficiency of approximately 80% with a pressure drop of about 1 Pa at air flows corresponding to 0.35 L/(s∙m²) building area. This type of ventilation system has the potential to offer a high thermal comfort, high heat recovery rate at the same time as the electrical consumption from fans is kept low. Old buildings with a natural ventilation system without heat recovery could also be retrofitted with this type of ventilation system.}},
author = {{Davidsson, Henrik and Bernardo, Ricardo and Hellström, Bengt}},
issn = {{2075-5309}},
keywords = {{hybrid ventilation; heat recovery; low pressure drop}},
language = {{eng}},
pages = {{18--38}},
publisher = {{MDPI AG}},
series = {{Buildings}},
title = {{Theoretical and Experimental Investigation of a Heat Exchanger Suitable for a Hybrid Ventilation System}},
url = {{http://dx.doi.org/10.3390/buildings3010018}},
doi = {{10.3390/buildings3010018}},
volume = {{3}},
year = {{2013}},
}