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Guru

Join Date: Dec 2006
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Specific Heat of wax

06/21/2007 9:05 AM

Hi Steam Gurus,

Please tell me the Specific Heat in Btu per Lb. per degree F of Wax and its specific gravity.

Also if I can get the steam consumption lbs/hr with this formula:

Gallons x specific heat x specific gravity x delta Temperature degree F x 8.3

Latent heat Steam (at operating pressure) x time taken (hrs).

Or any other suitable formula.

product: Wax

Volume: 3600 kg

Ambient Temp: 30C

Final Temp. 180C

Time required/batch cooking: 2 hrs.

Reactor size: 2000mm x 1500mm

Steam inlet to Reactor: 2"

Condensate outlet: 1.25"

Thanks

Duja

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Guru

Join Date: Nov 2006
Location: KnoxTN
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#1

Re: Specific Heat of wax

06/22/2007 8:07 PM

Q-1. Be specific. What kind of wax. Bees wax, candle wax, hi-temperature, low-temperature, etc. etc.

Q-2. Gallons? of what?

Without specific information as to exactly what materials and what you want to do we are in the dark and have to guess, usually wrong to provide an intelligent answer.

BTW where did the 8.3 come from?

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Guru

Join Date: Dec 2006
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#2
In reply to #1

Re: Specific Heat of wax

07/14/2007 3:55 PM

1 . Candle wax

2 . Gallons (Volume) in the Reactor

3 . 8.3 = 8.3 lbs to a UK Gallon

Tell me the Specific Heat?

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Guru

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#3
In reply to #2

Re: Specific Heat of wax

07/15/2007 1:46 PM

Specific heat capacity, also known simply as specific heat (Symbol: C or c) is the measure of the heat energy required to raise the temperature of one gram of a substance by one Kelvin (or degree Celsius).

Can be defined for other systems of measurement as well.

What is it that you ultimately want to know?

Amount (# of steam to melt a batch of (X pounds)?

Or?

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Guru

Join Date: Dec 2006
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#4
In reply to #3

Re: Specific Heat of wax

07/16/2007 4:26 PM

I asked a simple question" what is the specific heat of wax". You are just beating around the bush. Let me be more specific:

various liquids Specific heat Btu/lb F

Acetone .51

Alcohol,ethyl 32F .55

Benzol .52

Castor oil .43

Citron oil .44

Fuel oil sp.gr.96 .40

Fuel oil sp.gr.91 .44

Fuel oil sp.gr.86 .45

Fuel oil sp.gr.81 .50

Glycerine .58

Petroleum .51

Turpentine .41

Water 1.00

and so on & so forth.

please now if you know the specific heat of wax THEN PLEASE TELL ME!!!!!

I can also give you specific heat of Gases/Vapors/Food Stuffs running in hundreds & hundreds. I just do not have "wax".

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Guru

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#5
In reply to #4

Re: Specific Heat of wax

07/16/2007 4:55 PM

Not to be difficult BUT there are SIX general types of wax in two distinct classes.

Any particular one of interest?

  • Natural Waxes –
  • Synthetic (man-made)
    • Ethylenic polymers e.g. polyethylene & polyol ether-esters
    • Chlorinated naphthalenes
    • Hydrocarbon type, e.g. Fischer-Tropsch

As a WAG I would suggest .50 +/- untill you can find or get a better value.

The specific heat of the wax you are melting is a means to an end. Your OP had TMI not pertinent to the question.

Wax_Overview

IF you really have to have the Specific Heat for a specific wax contact the folks at the web site above with the specific wax of interest.

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Guru

Join Date: Dec 2006
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#6
In reply to #5

Re: Specific Heat of wax

07/17/2007 3:00 AM

Thanks Stan.

u are a life-saver.

Being delayed I took .53 as a long shot `guesstimate'.

Anyway you taught me that there are SIX general types. This was new to me.

Thanks heap buddy.

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#7

Re: Specific Heat of wax

04/06/2009 6:35 PM

This thread has been very useful to me, but would anyone happen to know approximately what the latent heat of fusion for waxes such as beeswax or lanolin would be?

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