P

#### Pete Brown

Approximately how much does it cost?

I need to run my oven for about 10 minutes to heat it up to Regulo 6. But

I can't get a reading of gas used because my meter is so cronky.

P

Approximately how much does it cost?

I need to run my oven for about 10 minutes to heat it up to Regulo 6. But

I can't get a reading of gas used because my meter is so cronky.

Ad

T

Surely your meter can tell you this information, otherwise how are theyPete Brown said:

Approximately how much does it cost?

I need to run my oven for about 10 minutes to heat it up to Regulo 6. But

I can't get a reading of gas used because my meter is so cronky.

going to bill you if it is not taking an accurate reading?

As the oven is not going to use a lot of gas to heat it up, the main numbers

probably won't go up, but the part units should...

When you are using gas, does a dial turn round?

If so, turn off any other gas appliances and count the number of turns in,

say, a minute, then you know how much gas it is using per minute, then times

this by the amount of time it takes to het up (assuming the oven does not

modulate down as it gets near the set point!) then look at your last bill to

see the calculation used, and the units the meter is in (Ft or m3) and work

it out.

Different ovens of different sizes and amount of insulation levels are going

to be different.

P

I originally tried what you suggested but my gas meter doesn't seemSurely your meter can tell you this information, otherwise how are

they going to bill you if it is not taking an accurate reading?

As the oven is not going to use a lot of gas to heat it up, the main

numbers probably won't go up, but the part units should...

When you are using gas, does a dial turn round?

If so, turn off any other gas appliances and count the number of

turns in, say, a minute, then you know how much gas it is using per

minute, then times this by the amount of time it takes to het up

(assuming the oven does not modulate down as it gets near the set

point!) then look at your last bill to see the calculation used, and

the units the meter is in (Ft or m3) and work it out.

Different ovens of different sizes and amount of insulation levels

are going to be different.

sensitive enough to give an actual measurement for 10 minutes of gas.

That's why I posted. Here's a pic of the meter:

http://tinypic.com/view.php?pic=28vzrkp&s=4

The dial on the right goes round about once for 10 minutes of gas to heat

up the oven. However the digits don't advance.

I have no idea how to interpret the meter's reading. I think the pic

above shows "9612.90" cubic feet. Is that right? Maybe the dial has to

rotate 100 times to move this to "9613.00".

D

The printing below the maind numbers shows the max flow rate of 212The dial on the right goes round about once for 10 minutes of gas to

heat up the oven. However the digits don't advance.

cubic feet per hour and the amount of gas per revolution of the dial

0.071 cubic feet.

14 times (more or less) 1/0.071 = 14.084.I have no idea how to interpret the meter's reading. I think the pic

above shows "9612.90" cubic feet. Is that right? Maybe the dial has to

rotate 100 times to move this to "9613.00".

J

If you suspect your gas bill is "3x what it should be" then check

billing are listing your readings in cubic-FEET and not cubic-METRES.

It is a not uncommon mistake and can go undetected for low-usage (E7)

houses for years.

P

My gas bills always seem high so I checked this out.

If you suspect your gas bill is "3x what it should be" then check

billing are listing your readings in cubic-FEET and not cubic-METRES.

It is a not uncommon mistake and can go undetected for low-usage (E7)

houses for years.

The bill shows my readings as "imperial units". (Each imperial unit is

equivalent to approx 32 kWh.)

Is an imperial unit the same as a cubic foot?

Ad

P

Thank you for the info. Can I check my understanding with you....The printing below the maind numbers shows the max flow rate of 212

cubic feet per hour and the amount of gas per revolution of the dial

0.071 cubic feet.

14 times (more or less) 1/0.071 = 14.084.

If one revolution of the dial is 0.071 ft^3 then 14 revs would be

equivalent to 1 ft^3.

However, it looks as if the red digit is 0.1 ft^3. So wouldn't the red

digit get advanced for every 1.4 revolutions of the dial?

PHOTO: http://tinypic.com/view.php?pic=28vzrkp&s=4

D

Yes, it should.Thank you for the info. Can I check my understanding with you....

If one revolution of the dial is 0.071 ft^3 then 14 revs would be

equivalent to 1 ft^3.

However, it looks as if the red digit is 0.1 ft^3. So wouldn't the red

digit get advanced for every 1.4 revolutions of the dial?

D

Oh yes, I was wrong previously. (Mitigating circumstance is that I'veNo, the red digit is 10 ft^3 and your meter is displaying 961290 ft^3.

not lived in a place with a mains gas supply for > 10 years so the

nitty gritty details of billing is but a hazy memory, so only sending

the 100's of cuft figure had slipped my mind).

So the red digit should advance one for every 140 revs of the dial.

G

100 cu ft. The white digits on the meter. The red ones are ignored.My gas bills always seem high so I checked this out.

The bill shows my readings as "imperial units". (Each imperial unit is

equivalent to approx 32 kWh.)

Is an imperial unit the same as a cubic foot?

P

Oh yes, I was wrong previously. (Mitigating circumstance is that

I've not lived in a place with a mains gas supply for > 10 years

so the nitty gritty details of billing is but a hazy memory, so

only sending the 100's of cuft figure had slipped my mind).

So the red digit should advance one for every 140 revs of the

dial.

This is important guys!

I want to know how much extra it costs to warm all my ready meals in

the oven (with good results) rather than using the microwave (with

crap results).

If the dial goes round 140 times for each time the digit advances

then it's no wonder my gas meter was useless when I tried to see how

much gas it took to heat up the oven.

I'm back to square one. I need to ask if someone in the UK with a

decent gas meter can give me an approx answer to that.

My cooker takes about 10 minutes to get to Regulo 6 which is the

setting I usually use. What's it costing me?

Ad

T

entirely depends on heat lost into the room, how much that replaces heatPete said:This is important guys!

I want to know how much extra it costs to warm all my ready meals in

the oven (with good results) rather than using the microwave (with

crap results).

If the dial goes round 140 times for each time the digit advances

then it's no wonder my gas meter was useless when I tried to see how

much gas it took to heat up the oven.

I'm back to square one. I need to ask if someone in the UK with a

decent gas meter can give me an approx answer to that.

My cooker takes about 10 minutes to get to Regulo 6 which is the

setting I usually use. What's it costing me?

the CH would have been generating otherwise (at probably lower

efficiency) and how burnt you like your prepackaged garbage to be, I

suppose.

D

Didn't you say it took 1 revolution of the dial for one oven heating?If the dial goes round 140 times for each time the digit advances

then it's no wonder my gas meter was useless when I tried to see how

much gas it took to heat up the oven.

That is 0.017ft^3 gas consumed, find your bill and do the maths.

Simples.

S

Too many variables, such as the heat of the room in the first placeThis is important guys!

I want to know how much extra it costs to warm all my ready meals in

the oven (with good results) rather than using the microwave (with

crap results).

If the dial goes round 140 times for each time the digit advances

then it's no wonder my gas meter was useless when I tried to see how

much gas it took to heat up the oven.

I'm back to square one. I need to ask if someone in the UK with a

decent gas meter can give me an approx answer to that.

My cooker takes about 10 minutes to get to Regulo 6 which is the

setting I usually use. What's it costing me?

etc. But if you don't enjoy the end result from a micro-wave, it's

costing you too much anyway, IMO!

P

Didn't you say it took 1 revolution of the dial for one oven

heating?

That is 0.017ft^3 gas consumed, find your bill and do the maths.

Simples.

I *thought* it was almost one revolution because the digit hadn't

changed. Now I realise it could have been anything up to 140

revolutions.

I would have to watch the rotary dial like a lynx throughout the

heating up period to get a reading. Ughhhh!

P

I am looking for an approximate figure.entirely depends on heat lost into the room, how much that

replaces heat the CH would have been generating otherwise (at

probably lower efficiency) and how burnt you like your

prepackaged garbage to be, I suppose.

I don't need it accurate to three significant digits. Within 50% or

100% is good enough to give me an idea of cost so I can compare it to

the microwave.

Ad

G

For the first 10 minutes or so it will be working at full rate.I am looking for an approximate figure.

I don't need it accurate to three significant digits. Within 50% or

100% is good enough to give me an idea of cost so I can compare it to

the microwave.

Why not look up the rating in the handbook and calculate from there? You

should have the handbook and service manual if it was (correctly) installed

and commissioned by a corgi (now gas safe).

I'm sure plenty here can do the calcs if you can't.

H

You have a U6 imperial meter which records gas usage in cubic feet.Pete Brown said:I originally tried what you suggested but my gas meter doesn't seem

sensitive enough to give an actual measurement for 10 minutes of gas.

That's why I posted. Here's a pic of the meter:

http://tinypic.com/view.php?pic=28vzrkp&s=4

The dial on the right goes round about once for 10 minutes of gas to heat

up the oven. However the digits don't advance.

I have no idea how to interpret the meter's reading. I think the pic

above shows "9612.90" cubic feet. Is that right? Maybe the dial has to

rotate 100 times to move this to "9613.00".

The white digits are hundreds of cubic feet and the red digits are tens of

cubic feet so the moving red counter will revolve 10 times to increment the

white digit by 1.

The test dial records 1 cubic foot of gas per revolution and this is used to

determine the gas rate of the appliance under test.

Using a stop watch accurately time how long it take to complete one

revolution of the dial.

It is difficult to gas rate an oven because it could get up to temperature

before the end of the test and modulate down to a lower flame and perhaps

this is why it took around 10 minutes to revolve the test meter.

I turned my oven to 9 and left the door open to test and recorded

405seconds.

Divide 3600 (seconds in 1 hour) by time in seconds for 1 complete revolution

gives gas rate in cubic feet.

3600 multiplied by 1035(calorific value of gas) divided by time in seconds

for 1 rev of dial multiplied by 3412(number of BTu/h in 1 kW) gives kW

Bit mind numbing those sums so I just looked up my gas rate chart and came

up with 8.9 cubic feet and 2.7 kW per hour.

When you have calculated your consumption in kW then look up your most

recent gas bill to see your supplier charges you per kW and divide that by

your warm up time.

I need a sleep now.

H

The 0.071 ft3/rev could be a bit misleading but it does not refer to theMike Clarke said:The text below the digits on the meter says that it's 0.071 ft^3 per

revolution which makes it 14.08 revolutions per ft^3 so that's about 140

revolutions for one red digit.

test dial but to the internal volume of the measuring device.

This information is required to determine the amount of gas required to pass

when purging the gas installation.

The test dial does in fact show one cubic foot of gas passing for each

complete revolution.

Ad

P

Corgi? Of course the cooker doesn't get serviced.For the first 10 minutes or so it will be working at full rate.

Why not look up the rating in the handbook and calculate from

there? You should have the handbook and service manual if it was

(correctly) installed and commissioned by a corgi (now gas

safe).

I'm sure plenty here can do the calcs if you can't.

Service manual? The cooker was in the house before I moved in.

**Want to reply to this thread or ask your own question?**

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.