2， positive pressure（利用屋内空气做循环）和 Balance flow recovery system （估计是利用空调机器调节湿度和温度） 哪个更适合家庭
3，家里是4房的，费用可能是多少
4，耗电怎么样，大概一个月几钱啊？？
感谢大家，随贴附上 从EECA下载的表格， 大家帮忙说说吧
Appendix 1. Home ventilation system suppliers
Note this is not a complete list of all suppliers in NZ – this represents the suppliers whose material was accessed from websites and reviewed. System Main Supplier Contact Positive Pressure
HomeVent Air Care (Palmerston North) http://www.homevent.co.nz
Weiss Air Care (Palmerston North) http://www.homevent.co.nz
QualityAir Quality Air http://www.qualityair.co.nz
Moisture-master Condensation Control Ltd. http://www.condensation.co.nz
Nuaire Drimaster X-Air Ltd http://www.drimaster.co.nz
Drivaire Drivaire Home Ventilation http://www.homeventilation.co.nz
DVS DVS Ltd
(http://www.dvs.co.nz
SmartVent Securimax Ltd www.securimax.co.nz
Hometech ACD (Anti Condensation Device) http://www.hometech.co.nz/condensation-
soluations.asp
HRV Cristal Air International Ltd t/a HRV http://www.hrv.co.nz
Healthaire Healthaire http://www.healthaire.co.nz Balanced flow/heat recovery systems
Lossnay BDT (Black Diamond Technologies) http://bdt.co.nz/lossnay
SmartVent Synergy Securimax Ltd www.securimax.co.nz
Cleanaire Avon Electric, Christchurch http://www.dryair.co.nz
Intelivent Entuition Ltd http://intelivent.co.nz/index.html
Report to EECA: January 2009
32Home Ventilation Systems Assessment Appendix 2. Summary of main types of ventilation systems System
Passive
Passive stack
Exhaust (spot)
Negative pressure (whole house exhaust)
Positive pressure with roof cavity heat transfer
Balanced pressure with heat recovery Applications
Trickle ventilation to parts or all of a house
Part or whole house, sometimes in conjunction with mechanical systems
Spot ventilation of wet areas (e.g. kitchen, bathrooms)
Whole house background ventilation
Whole house ventilation for new and existing houses
Whole house ventilation for new and existing houses Advantages
Simple to use, understand Low maintenance No running costs or electrical connection
No running costs or electrical connection Low maintenance Quiet
Easy and inexpensive
Effective in dealing with localised steam/ humidity issues - reduces the likelihood of contaminants being spread to other spaces
Relatively easy and cheap to install
Allows good control of intake air filtration Can precondition outside air
Potential heating energy benefits from using roof cavity air
Optional inlet sources, valves and controllers can enhance system performance
Allows good control of intake air filtration Ventilation largely independent of weather Provides efficient pre-heating of incoming air Energy efficiency benefits from heat exchanger Disadvantages
Irregular and intermittent ventilation – dependent on weather condition, wind pressure etc
Likely to need mechanical back-up/supplementation to achieve consistent ventilation
Irregular and intermittent ventilation, especially in hot weather as dependent on temperature gradients
Difficult to install unless specifically designed
Likely to need mechanical back-up/supplementation to achieve consistent ventilation
Fans generally noisy
Generally not suitable for bedrooms and living areas – areas that require consistent ventilation
Doesn’t allow incoming air to be filtered or otherwise conditioned - unfiltered air drawn through gaps and openings in building elements may be polluted and hazardous.
May entrain pollutants from combustion, attached garage, ground (moisture, radon) etc
Risk of moisture damage to structure in hot-humid climates
Houses need to be well sealed especially the ceiling in order to prevent backflow of stale, moist air
Not recommended for very cold climates because of potential moisture entrainment and damage to structure
Lower cost systems generally don’t include desirable options
Roof cavity heating benefit highly dependent on specifics of houses, system and climate
Concerns about potential air contamination from roof space
Generally more expensive to install than positive pressure systems
Needs careful design and installation to avoid uneven pressurization and spatial pressure variations
Houses need to be well sealed otherwise likelihood of excessive ventilation and energy waste Comment
Can be useful but they don’t provide consistent ventilation in all weather conditions
EST regard as good practice but not best or advanced practice for new houses unless assisted in some form
EST regard as good practice but not best or advanced practice for whole house and new houses
Common overseas but not common in NZ
Most common ventilation systems sold in NZ but there is a lack of agreed guidance on design and performance parameters
EST regard as good practice but not best or advanced practice for new houses
EST regard as best practice for new houses
Note that this table draws heavily from overseas sources, particularly the Energy Saving Trust (EST - Ref 12), so is not particularly focused on the specifics of New Zealand.
