Natural ventilation in hospitals

1. Dr.Mrs. Mehdizadeh
Presenter:Vahid Rahmani
NATURAL VENTILATION IN HOSPITALS

3.  According to pollution of indoor air with poor
ventilation and out door pollution with dust and insects
the ventilation of wards that admission of patient with
weak efficacy of the immune system is compliable
SIMULATION OF NATURALVENTILATION IN HOSPITALS OF SEMIARIDCLIMATES FOR
HARMATTAN DUSTAND MOSQUITOES:A CONUNDRUM. (n.d.).

4.  The cost of natural ventilation is less than mechanical
ventilation ,therefore this system is the beast solution of
design healthcare with limit budget. Unfortunately
because of need to mass outdoor air flow to control
infection, control of the natural ventilation is difficult
Levin, H. (2010). NaturalVentilation:A Sustainable
Solution to Infection Control in Healthcare Settings?

5.  The mix-ventilation is the combination of mechanical
and natural ventilation that controlled by temperatures
and occupancy sensors
blow-through ventilation draw-through ventilation
Heating and ventilation systems HealthTechnical Memorandum 03-01:Specialised ventilation for.
(November 2007). Department of Health / Estates and Facilities Division

6.  Three base elements are in natural ventilation design that
includes: knowledge about air flow, base air flow, and
calculation the opening location and area.The elements of
natural ventilation and mechanical is selected according
hospital needs and climate.
JamesAtkinson,Yves Chartier,Carmen Lúcia Pessoa-Silva. (n.d.). NaturalVentilation for
Infection Control in Health-Care Settings,Paul Jensen,Yuguo Li,Wing-Hong Seto. WHO
Publication/Guidelines

7.  Use the solar collectors to pre-heating
the outside air to provide for air handing
unit and exhaust indoor air
LIVIO DE SANTOLIAND GINO MONCADA LO GIUDICE. (June 1998).
Hybrid ventilation in a hospital building. ENVIRONMENTALLY FRIENDLY CITIES,
Proceedings ofPLEA'98,Lisbon,Portugal , 487-49

8. Result
According to our study the cost of natural ventilation is less
than other systems . unfortunately because of the out door
air is include the dust and insect this system efficiency is
compliable and use the massive amount of air volume the
control of this system is very difficult .
therefore designers offer the mix mod ventilation . In this
system we use the natural ventilation with mechanical
ventilation at the same time . Natural ventilation is use for
low risk area in hospital and mechanical system with
infection control is use in high risk zoons.