gas rating boilers

[kirkgas]

i used to use the app on my htc but its broke and i haven't claimed it on the insurance yet, using another phone at the moment so doing it manually now, the only problem i have is calculating ft/hr.

When working on imperial meters I times how long for one revolution then divide that by 1098, divide 1.11 to get heat input, anyone got a simple calcuation to convert kw to ft/hr ?

why do you want to take it back to ft3?
if the appliance HI is metric then 1097 (or whatever you use) divided bt T (secs to burn 1ft3) gives you HI in Kw, then divide by 3412 if you need it in BTU's
1097/T x 0.028 gives you a conversion from ft3/hr to m3/hr (as some MI state gas rate rather than HI)

 

[GQuigley67]

well worcester benchmark want either m3/hr or ft3/hr and i can manage it with metric meters to get m3/hr but struggle with imperial at the moment i am putting in HI but please don't shoot me i know its wrong but still showing its working correctly.

 

[kirkgas]

well worcester benchmark want either m3/hr or ft3/hr and i can manage it with metric meters to get m3/hr but struggle with imperial at the moment i am putting in HI but please don't shoot me i know its wrong but still showing its working correctly.

if they want m3/hr or ft3/hr then mark it in m3/hr,
1097/T(secs to burn ft3 of gas)x 0.028 will give you m3/hr using a U6 meter

 

[CMairiD]

I used an iPhone app on my Gas Safe inspection. No bother. As a matter of we had a laugh about it. He did long hand, I did iPhone and we were within .xx of each other. No different than using the gas rating slide rule and I'd challenge any inspector who picked me up on this.

But then again, I'm bloshy like that. 🙂

 

[tamz]

well worcester benchmark want either m3/hr or ft3/hr and i can manage it with metric meters to get m3/hr but struggle with imperial at the moment i am putting in HI but please don't shoot me i know its wrong but still showing its working correctly.

If you want to write down the imperial gas rate, time the dial for 1 rev then divide 3600 (number of seconds in an hour) by the time. eg. 44 secs for a rev. 3600 /44 = 81.8ft³/hr. To check it against the metric in the book multiply it by 0.0283 = 2.31m³/hr.