Reverse osmosis water purification equipment water production and temperature relationship is as follows:
1, reverse osmosis to produce pure water has a characteristic: the actual amount of reverse osmosis membrane water production by the influence of temperature changes. Most of the laboratory ultrapure water machine or reverse osmosis water purification equipment water production by reverse osmosis membrane at 25 ℃ inlet temperature under the standard water production to label. Therefore, customers in the choice of laboratory ultrapure water machine or reverse osmosis water purification equipment, taking into account the lower water temperature in winter, as well as reverse osmosis membrane put into use after the water flux will gradually reduce the impact of factors, be sure to enlarge the demand for water production to the equipment nominal water production capacity of 1.5 ~ 2 times to consider.
2, the impact of temperature on the reverse osmosis membrane water production is shown in the figure below.
3, the temperature becomes lower, the viscosity of water increases, water diffusion is weakened, water production also decreases with the temperature drop. At the same pressure, a drop in temperature of one degree Celsius, water production can be reduced by 3 to 4%. The following equation shows the relationship between water production flux and temperature.
TCF=exp[K×(1÷(273 + t)-1÷298]
Where TCF is the temperature correction factor, K is the membrane material constant, and t is the inlet water Celsius temperature. The equation uses 25°C as the reference, with TCF = 1.