Login | Register

Previous in Forum: embedded system   Next in Forum: Large Hadron Collider
Close

Comments Format:






Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







13 comments
Participant

Join Date: Jun 2008
Posts: 4

Magnetic induction for hot water heaters?

06/29/2008 5:18 AM

Does anyone know of commercially viable hot water heaters based on magnetic induction technology.

I understand that they are competitive with traditional electric hot water heaters only when operated with low night-rate electricity.

If anyone has heard of this type of product (induction hot water heaters), please email me the names of the manufacturers or distributors of it.

Thank you in advance for any help you can offer me.

Kind regards,

(Ms) Andi Ziegelman

President

Ziegelman Export – Marketing Research

Haifa, Israel

Tel: +972-4-8257966

www.ziegelman.co.il (Click on Ziegelman Export.)

Send to a friend Digg this Add to del.icio.us
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Guru
United Kingdom - Member - Olde Member!! Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jul 2006
Location: Dunstable, England
Posts: 2546
Good Answers: 35
#1

Re: Magnetic induction for hot water heaters?

06/29/2008 10:50 AM

Well I have an induction hob that heats water in a steel pan very efficiently.

I can't see why some steel tubes couldn't be arranged in the magnetic field to produce hot water...

But why? having a heater immersed in water will give you almost 100% efficiency in transferring the power into hot water...

Using induction heating will give less efficiency.

John.

__________________
Nobody is so blind as those that can not understand
Participant

Join Date: Jun 2008
Posts: 4
#2
In reply to #1

Re: Magnetic induction for hot water heaters?

06/29/2008 1:56 PM

Someone has developed an induction water heater that is more cost efficient than traditional water heaters, when it is used during the night with low tariff electricity.It is being sold in Israel to old age homes to replace electricity hot-water systems that heat water during the night for morning bathing of bed-ridden people. It may also have been sold to factories that have lots of night-shift employees that shower at work early in the morning after work. I searched and searched the Internet for other commercial units of this type, but haven't found any. I guess the owner of the patent for this induction system is correct when he says that there is no competition.

Guru
Popular Science - Weaponology - Scapolie, new member.

Join Date: Jan 2007
Posts: 901
Good Answers: 7
#7
In reply to #1

Re: Magnetic induction for hot water heaters?

06/30/2008 1:20 PM

Hi Electroman,

I cannot see why this cannot be done, this system of heating is often used in labs that produce synthetic gemstones. To produce Zirconium Oxide gemstones( cubic zirconia), they put Zr O powder in a crucible that is made of a tght cage of half inch copper tubing, water is run through the tubes to keep it cool. To heat it up to 1200C they place it in a chamber that is then bathed in RF.

If they can do that then I am sure they can heat water this way, but what is the expence?

Spencer.

Guru
United States - Member - Why don't you knock it off with them negative waves? Malaysia - Member - Why don't you knock it off with them negative waves? Engineering Fields - Mechanical Engineering - Why don't you say something righteous and hopeful for a change? Engineering Fields - Instrumentation Engineering - Vibration guy Hobbies - Musician - Wannabe Guitar Hero

Join Date: Aug 2007
Location: In Houston Texas, finalizing my transfer to Kuala Lumpur, Malaysia 3°10'36.60"N 101°40'15.58"E
Posts: 1106
Good Answers: 36
#3

Re: Magnetic induction for hot water heaters?

06/29/2008 2:37 PM

Wouldn't technology that is competitive on night rate electricity also be competitive on day rate electricity? Or are you factoring in payback time based on initial cost? The induction technology is more expensive on first cost but can pay back the difference in a reasonable time on the night rate?

__________________
Veritas vos liberabit....La vérité rend libre..... De waarheid is bevrijdend ..... La verdad te libera....The truth will set you free.
Participant

Join Date: Jun 2008
Posts: 4
#4
In reply to #3

Re: Magnetic induction for hot water heaters?

06/29/2008 2:49 PM

I guess that the payback issue is what makes the induction system cost effective at night rate electricity. Glad that you brought up this issue. Will check it out. I'm a curious person, but not an engineer.

I have given the co. behind this product a proposal for market research. Til I "get" the project, I don't have to get into the induction product. BEFORE I wrote the proposal, I wanted to see what competition was on the market. When I didn't find any, I thought to try this discussion group. God only knows how I found it. I'm not an engineer, but I still get email from Global Spec, in connection with a market research project I once did (10 years ago!). Thank you all for your valuable comments. The Internet is great.

Guru
United Kingdom - Member - Olde Member!! Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jul 2006
Location: Dunstable, England
Posts: 2546
Good Answers: 35
#5

Re: Magnetic induction for hot water heaters?

06/29/2008 4:26 PM

Hmmmmmmmmmm sounds to me like its another 'get rich quick' scheme...

Standard water heaters used to heat water using off-peak electricity would be far better than complex and expensive induction heating...

John.

__________________
Nobody is so blind as those that can not understand
Participant

Join Date: Jun 2008
Posts: 4
#6
In reply to #5

Re: CLARIFICATION:Magnetic induction for hot water heaters?

06/30/2008 8:51 AM

Hello,

Now I will straighten things out.

The induction hot-water heater about which I wrote is particularly cost effective when used with low night-rate electricity, and compared to hot-water heaters that work on gas and diesel fuel.

When compared to hot-water heaters that work on electricity, "my" induction system is only a little cheaper. In this case, the Return on Investment is over 3 years.

I apologize for the misunderstanding I caused. But I would like to thank everyone for helping me see my mistake.

Best wishes, ARA

Power-User
United States - Member - New Member

Join Date: Dec 2006
Location: La Grande, Oregon U.S.A.
Posts: 129
Good Answers: 4
#8
In reply to #6

Re: CLARIFICATION:Magnetic induction for hot water heaters?

06/30/2008 3:55 PM

A resistance heater will be approximately 100% efficient in converting electricity to heat. An induction heater will be somewhat less efficient due to switching losses in the controller which converts incoming power into a higher frequency that the heater can use. Gas and diesel will always be cheaper than electricity for heating, unless your electricity comes from hydro power or a very bare-bones, lightly regulated nuclear reactor. If you are using off-peak hours to heat enough water for the whole day, a resistance heater will heat just as much water with less electricity and cost much less to buy and maintain.

Score 1 for Good Answer
Guru
United Kingdom - Member - Olde Member!! Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jul 2006
Location: Dunstable, England
Posts: 2546
Good Answers: 35
#9
In reply to #8

Re: CLARIFICATION:Magnetic induction for hot water heaters?

06/30/2008 4:16 PM

Agreed Dave, as I said in post #1....

__________________
Nobody is so blind as those that can not understand
Power-User
United States - Member - New Member

Join Date: Dec 2006
Location: La Grande, Oregon U.S.A.
Posts: 129
Good Answers: 4
#10
In reply to #9

Re: CLARIFICATION:Magnetic induction for hot water heaters?

07/01/2008 12:23 PM

Electroman,

You did say that in post#1, my intention was to expand on the reason.

LG_DAVE

Guru
United Kingdom - Member - Olde Member!! Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jul 2006
Location: Dunstable, England
Posts: 2546
Good Answers: 35
#11
In reply to #10

Re: CLARIFICATION:Magnetic induction for hot water heaters?

07/01/2008 2:44 PM

Maybe I should learn to type a little faster so I can answer a question in as much detail as I'd like.

Or maybe I should just sit on the sidelines and give out GA for people who have typed a more detailed and clear answer?

Thanks - John

__________________
Nobody is so blind as those that can not understand
Power-User
United States - Member - New Member

Join Date: Dec 2006
Location: La Grande, Oregon U.S.A.
Posts: 129
Good Answers: 4
#12
In reply to #11

Re: CLARIFICATION:Magnetic induction for hot water heaters?

07/01/2008 6:49 PM

Lighten up electroman - no offense was meant

Guru
United Kingdom - Member - Olde Member!! Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jul 2006
Location: Dunstable, England
Posts: 2546
Good Answers: 35
#13
In reply to #12

Re: CLARIFICATION:Magnetic induction for hot water heaters?

07/02/2008 7:32 AM

Absolutely none was taken Dave - honest

__________________
Nobody is so blind as those that can not understand
13 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Copy to Clipboard

Users who posted comments:

ARA (3), Electroman (5), LG_Dave (3), Scapolie (1), Steve S. (1)

Previous in Forum: embedded system   Next in Forum: Large Hadron Collider
You might be interested in: Industrial Heaters, All Types, Water Heaters, Video Cameras