Civil Engineering Reference
In-Depth Information
Equivalent effectiveness of HRU in Europe with DSFP 2,500 J/m
3
, e = 0.8 and g = 0.85
Fig. 7
Equivalent effectiveness of HRU in Europe with DSFP 500 J/m
3
, e = 0.8 and g = 0.85
Fig. 8
assess the pollutant load (Fisk and De Almeida
1998
), either directly (Lin et al.
2011
) or through the bias of a proxy, such as occupancy (Johansson et al., Mysen
et al.
2005
) or a tracer gas (Lawrence and Braun
2007
; Nabil
2012
). As shown in
Fig.
9
, demand-controlled ventilation, when optimally sized and controlled,
achieves up to 50 % of ventilation heat loss savings for equal mean exposure.
Additionally, the associated peak exposures are also reduced, demonstrating that
demand control systems also provide more robust indoor air quality.
Most research is focussed on the technical issues of the control strategy (Dounis
et al. (
2011
); Parameshwaran et al.
2010
; Wang and Xu
2004
), though the
application of the technology has been studied in residences (Laverge et al.
2011
,
Nielsen and Drivsholm
2010
; Sherman and Walker
2011
), offices (Mysen et al.
