[Doug Holloway]

Hi Guys,

Heat is important in any chemical reaction including cleaning , as the molecules will move faster, thereby meaning more collisions , more reactions, more cleaning.

An increase of 10 celcius can triple a rate of reaction.

This is scientific fact , not marketing spin.

Cheers

Doug

[Mike Halliday]

I agree with both sides of the argument, that heat isn't always needed. but isn't it better to have heat and chose not to use it rather than not have heat and sometimes need it.

to say that you can use TACT (or CHAT) to compensate for not having 'T'empriture is not always possible.

 Some may say if you don't heat then you can 'A'ggitate more, but what if its a wool Berber, has anyone ever over-aggitated a berber and left them with what looks like a cotton wool carpet

or.. do we really want to increase the amount of 'C'hemical used on a carpet to compensate for not having a heat option, aren't we trying to use less chemicals in our cleaning?

Mike

[Mark Roberts]

An increase of 10 celcius can triple a rate of reaction.

This is scientific fact , not marketing spin.

What you refer too is called the Arrhenius Equation, for every 10 degrees C  increase in temperature over 47 degrees C, the rate of reaction doubles then drops off rapidly! Rate of reaction (heat) in a chemical can decrease or increase its cleaning potential.

The formula really has nothing to do with cleaning and has many flaws
http://antoine.frostburg.edu/chem/senese/101/kinetics/faq/temperature-and-reaction-rate.shtml

Bane-clene sum it well-

Temperature

This would be a good place to mention thermal energy.
There has been a debate between two schools of thought as to what is the best temperature for wet extraction cleaning.One side says "the hotter the better", because cleaning power doubles for every 18° increase in temperature. They say this because many chemical reactions double for every 18° increase in temperature, above a certain critical temperature. However, the main objective in cleaning is to be above the melting point of the soil (try cleaning butter off a knife with cold water vs. hot water).

The other side says that high temperatures are unsafe to carpet and people and unnecessary. The carpet dyes and protectors are also more readily removed at the higher temperatures.
 
Well, both sides are correct! ALL OTHER THINGS BEING EQUAL, cleaning improves with increased temperature on any kind of surface. However, there are surfactants and emulsifiers available today with which one can formulate a product specifically to perform at its best at a particular temperature range. By using these specialized surfactants, it is usually unnecessary to strive for the highest temperatures possible. In fact, cleaning compounds of this type will outperform at moderate temperatures the old-fashioned surfactants at high temperatures! Only in the case of extremely grease-laden carpets in restaurants is it really necessary to increase the temperature of the Bane-Clene systems.

Remember also that a loss of temperature will occur from the solution tank to the carpet surface. Factors that determine the degree of temperature loss are: solution hose length, distance of the tee-jet opening from the surface of the carpet, and the outside temperature (especially in the winter) with truck-mounted equipment outside.

Instead of using higher temperatures, use better chemicals!

Mark

[paul wright]

lol  y would u hav fireworks ?  each lead on a cleaning machine and a external heater is rated to the max a socket can handle in this countr y 3200 w  if they were to draw more than this they could not sell them in this country    so u can plug as much machines or external heaters as u want into seperate sockets

[Doug Holloway]

Mark,

Thats why I said 'can triple a rate of reaction' , it obviously bepends on a lot of things including how far the reaction has progressed, degradation issues etc.( 'can' being the operative word)

In the day to day cleaning sense, heat will speed up the rate of reaction because things are happening quicker, molecules are moving faster allowing them a greater probability of contacting each other.

It's interesting you quote Bane as they are perceived as having a problem with temperature, due to the fact you can only get so much energy out of a domestic electricity supply.

Cheers

Doug

[paul wright]

ive used machines without heaters and with heaters   and lots diff chems     and the winner was  machine with built in heater  so much better    i even found i could clean better n faster  without chems   than i could with a non heated machine with loads diff chems