System Design for Demand Controlled Ventilation in Multi-Family Dwellings

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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System Design for Demand Controlled Ventilation in Multi-Family Dwellings. / Mortensen, Dorthe Kragsig; Nielsen, Toke Rammer.

In: International Journal of Ventilation, Vol. 10, No. 3, 2011, p. 205-216.

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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Author

Mortensen, Dorthe Kragsig; Nielsen, Toke Rammer / System Design for Demand Controlled Ventilation in Multi-Family Dwellings.

In: International Journal of Ventilation, Vol. 10, No. 3, 2011, p. 205-216.

Publication: Research - peer-reviewJournal article – Annual report year: 2011

Bibtex

@article{947b23ecb5f04a2186870f976e754421,
title = "System Design for Demand Controlled Ventilation in Multi-Family Dwellings",
keywords = "Residential ventilation, Static pressure reset, Control strategy, Demand controlled ventilation, Energy consumption",
publisher = "VEETECH Ltd.",
author = "Mortensen, {Dorthe Kragsig} and Nielsen, {Toke Rammer}",
year = "2011",
volume = "10",
number = "3",
pages = "205--216",
journal = "International Journal of Ventilation",
issn = "1473-3315",

}

RIS

TY - JOUR

T1 - System Design for Demand Controlled Ventilation in Multi-Family Dwellings

A1 - Mortensen,Dorthe Kragsig

A1 - Nielsen,Toke Rammer

AU - Mortensen,Dorthe Kragsig

AU - Nielsen,Toke Rammer

PB - VEETECH Ltd.

PY - 2011

Y1 - 2011

N2 - This paper presents an investigation into solutions for the system design of a centralized DCV system in multi-family dwellings. The design focused on simple and inexpensive solutions. A cost benefit estimate showed that the initial cost of implementing DCV in a system with an efficient heat exchanger should not exceed 3400 DKK per dwelling in regions with weather conditions similar to the Danish climate. A design expected to fulfil this requirement was investigated in detail with regard to its electricity consumption by evaluation of different control strategies. Systems with variable airflows are typically controlled by maintaining the static pressure at a fixed level at a selected point in the main duct. However, sustaining the static pressure at a fixed level at part load leads to throttling of all control components and thereby unnecessary energy consumption. Resetting the static pressure at part load reduces throttling and energy can be saved. A static pressure reset strategy was applied to a dwelling-specific DCV system where the airflow varied between three fixed rates. The system performance was evaluated for two diffusers. The annual electricity consumption was reduced by 20% to 30% when resetting the static pressure at part load condition compared to a control strategy with fixed static pressure.

AB - This paper presents an investigation into solutions for the system design of a centralized DCV system in multi-family dwellings. The design focused on simple and inexpensive solutions. A cost benefit estimate showed that the initial cost of implementing DCV in a system with an efficient heat exchanger should not exceed 3400 DKK per dwelling in regions with weather conditions similar to the Danish climate. A design expected to fulfil this requirement was investigated in detail with regard to its electricity consumption by evaluation of different control strategies. Systems with variable airflows are typically controlled by maintaining the static pressure at a fixed level at a selected point in the main duct. However, sustaining the static pressure at a fixed level at part load leads to throttling of all control components and thereby unnecessary energy consumption. Resetting the static pressure at part load reduces throttling and energy can be saved. A static pressure reset strategy was applied to a dwelling-specific DCV system where the airflow varied between three fixed rates. The system performance was evaluated for two diffusers. The annual electricity consumption was reduced by 20% to 30% when resetting the static pressure at part load condition compared to a control strategy with fixed static pressure.

KW - Residential ventilation

KW - Static pressure reset

KW - Control strategy

KW - Demand controlled ventilation

KW - Energy consumption

JO - International Journal of Ventilation

JF - International Journal of Ventilation

SN - 1473-3315

IS - 3

VL - 10

SP - 205

EP - 216

ER -