4
Water Temperature to 50° F. = 96° - 98° F.
Water Temperature to 30° F. = 100° - 102° F.
For Depths of 100 to 240 feet.
Water Temperature to 50° F. = 100° - 103° F.
Water Temperature to 30° F. = 103° - 105° F.
The recommended injection temperature is a base line and will need to be adjusted
depending on the following factors.
a.
Flow Rate (g.p.m.) to the diver. (Higher the rate, lower the temperature.)
NOTE!
The minimum recommended flow rate for 1/2 ID hose is 2 g.p.m.
For 5/8” and 3/4” ID hose, the minimum recommended flow rate is 4
g.p.m.
b.
Heat Loss from hot water hose.
NOTE!
The heat loss is dependent on: ID and OD of hose, length of hose,
ambient air and water, and length of hose in the water.
c.
Ambient water temperature.
d.
Breathing medium.
e.
Breathing gas temperature.
f.
Physical condition of diver.
g.
Work diver is performing.
Hot Water Hose Heat Loss
On an average, the heat loss for a 300 foot, 1/2” ID, 1¼” OD hot water hose
with an injection water temperature of 110° F. and a flow rate of 2 g.p.m., in
an ambient water temperature of 35° F., will be about 18° F. (Base Line).
The heat loss for a 1/2 ID, 7/8” OD hose, will be about 36° F. (Base Line).
