skimmer pump heating the water?

[penyu]

Hello there, I'm wondering when we use skimmers like weipro which needs to have a pump submerged in the tank water, will the tank water gets heat up because of the pump?

[lightningstrike]

Hello there, I'm wondering when we use skimmers like weipro which needs to have a pump submerged in the tank water, will the tank water gets heat up because of the pump?

yes definitely. irregardless whether the pump/powerhead is for return, circulation or skimmer. the pump do not fully utilise all the power for it's usage. some of it is converted to heat energy which will heat up ur water. that is why most reefers prefer to go 4 as low a wattage pump as possible.

[penyu]

oh ok, thanks for the info lightning strike. hmmm, that means a fan won't do any good cause the heat is from the pump and not from the lights.

[lightningstrike]

oh ok, thanks for the info lightning strike. hmmm, that means a fan won't do any good cause the heat is from the pump and not from the lights.

nope, a fan will help to a certain extent. still will be more efficient to bring water temp down wif a reliable chiller. heat contributed r always thru conduction, convection and radiation.

for pumps: convection

for lights: radiation/conduction

(if i get my 15yrs old poor science right. reefers in sec sch, pls help if i m wrong)

watch out for the evap rate when using a fan.

[ZeRoC00l]

for pumps: convection

for lights: radiation/conduction

(if i get my 15yrs old poor science right. reefers in sec sch, pls help if i m wrong)

watch out for the evap rate when using a fan.

I also believe tt for

pump: conduction / convection

water as the direct media incontact with the pump body

[lightningstrike]

conduction if directly touch the water....so radiation only lar...

wah liew...... so ma loo all the sec sch science throw back to teacher liaoz.......

[terryansimon]

does it matter if it is conduction/convection/radiation? what matters is that the heat generated by the pump is passed to the body of water, and it must be removed from the system

by the way, it will be convection via convection currents.

[piglet]

don't need to make it so 'complex'... All pumps will add' heat to water. Depend on the type, watt, design of the pump. .. Low watt pump > will pass lesser heat to water. thus try not to use china brand.. ( if you>> done any research, you will understand > what i mean) ..

More pump/power head you have >> will result in higher watt,.. thus more heat ! !

Thus it is important for you to take note of this.

[lightningstrike]

does it matter if it is conduction/convection/radiation? what matters is that the heat generated by the pump is passed to the body of water, and it must be removed from the system

by the way, it will be convection via convection currents.

i apologise for making this thread science-related. ;p

[Ekia]

nope, a fan will help to a certain extent. still will be more efficient to bring water temp down wif a reliable chiller. heat contributed r always thru conduction, convection and radiation.

for pumps: convection

for lights: radiation/conduction

(if i get my 15yrs old poor science right. reefers in sec sch, pls help if i m wrong)

watch out for the evap rate when using a fan.

Should be....

Pumps: Conduction+Convection

Lights: Convection+Radiation... unless yr lights in the water of course

[Ekia]

oh ok, thanks for the info lightning strike. hmmm, that means a fan won't do any good cause the heat is from the pump and not from the lights.

Anyway, the main idea behind using a fan to cool down the tank is evaporation. Using a fan causes the water to evaporate quickly and hence cool down the temperature of the tank. Don't want to go too much in detail into it.. later become too scientific thread. Its actually the same idea behind why u feel extremely cold after u come out of the swimming pool. Evaporation of the water on your body brings down your body temperature.

So it doesn't matter where the heat comes from, as long as there's evaporation, the temperature will be lowered. And of course.. fan blowing across the lights will help too as it provides extra ventilation and it lower down the heat produced by the light directly, before it can cause the water to heat up.

[terryansimon]

no. you feel cold when you come out of the swimming pool because you realise you left your trunks inside!

[penyu]

no. you feel cold when you come out of the swimming pool because you realise you left your trunks inside!

hahahaha

Anyway, thanks Ekia for the explaination.

[Ekia]

Don't mention