Convective Heat output
Convective Heat output
(OP)
I need some clarification regarding the following formula:
Qconv = Pn x Qs x b x ϕ
this equation is used to determine the cooking appliance's convective heat output in kw, 'b' and 'ϕ' are coefficients easily determined. I am confused whether to use the actual capacity of the appliance for 'Pn' or its power rating which is higher and will result in a big difference. When it comes to Qs is the cooking appliance convective heat output in W and sometimes its unit is W/kW.
Can anyone help clear this issue?





RE: Convective Heat output
'Qs' is the sensible heat emitted
my bad!
RE: Convective Heat output
They should define Pn.
RE: Convective Heat output
http://www.scribd.com/doc/29293566/HVAC-Handbook-Kitchen-Design-Guide-HALTON
and scroll down to page 45
RE: Convective Heat output
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Convective Heat output
RE: Convective Heat output
Look at ASHRAE Handbook of fundamentals, - internal heat gains - kitchen appliances.
RE: Convective Heat output
RE: Convective Heat output
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Convective Heat output
if Qs is given in W/kW, and it is electrical appliance, than it is likely that Pn is electrical power rating, but your "sometimes" provides confusion, there shouldn't be sometimes, Qs is given in W/kW or not.
RE: Convective Heat output