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Ventilation Design Handbook on Animal Research Facilities Using Static Microisolators 
4. 1.2. 7 Water Production Calculation 
Wadded 
where: 
P water 
Mi 
Mo 
Wadded 
D 
Total water production, g/hr/lOOg of mice. 
Leaking airflow rate, L/min. 
Air exchange flow rate, L/min. 
Water added to calorimeter, g. 
Dehumidified water, g. 
Equation to calculate water from air pumped out: 
R a xM 0 xl,1614x6 
W m 
m 
(4.17) 
where: 
out 
p 0 
Ra 
W m 
1.1614x6 
Water production from pumped out air, g/hr/lOOg of mice. 
Humidity ratio g moisture /kg dry air in calorimeter, g/kg. 
Mice weight in calorimeter, g. 
Coefficient to convert units. 
Equation to calculate water entering calorimeter through air leaking in: 
_ R r xMj xl. 1614x6 
,n " w“ 
(4.18) 
where: 
Pin 
Rr 
Water gain due to air leakage, g/hr/lOOg of mice. 
Humidity ratio, g moisture/ kg dry air in chamber, g/kg. 
