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 BREADMAN TR2500BC 2 LB Stainless Steel Convection Bread Maker Ultimate Plus $72.50 Time Remaining: 27d 7h 59m Buy It Now for only: $72.50 |
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 Oster 6058 6 Slice Digital Convection Toaster Oven Stainless Steel $64.99 Time Remaining: 24d 4h 50m Buy It Now for only: $64.99 |
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 New in Box Cuisinart Toaster Oven Convection Cooking Stainless Steel TOB 60 $70.00 (1 Bid) Time Remaining: 8h 59m |
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Steel Convection
Selecting a Convection Microwave
When you are looking for a convection microwave oven, you might appreciate some tips on things to look for when selecting one. It is a good idea to learn about the advantages of a convection microwave and the many uses it can be put to. Perhaps you don't really understand the difference between a conventional microwave oven and a convection microwave.
The technology that makes convection possible uses a specialized fan to circulate the hot air inside your convection microwave. As this hot air circulates it gets close to the food, which allows it to cook more evenly. It also causes the food to brown and bake. The versatility of the convection microwave gives you all of the speed of the traditional microwave with the added ability to cook foods with their desired texture and color.
If you need to be able to prepare and cook foods quickly because of your family's busy schedule, then a convection microwave is an excellent choice. You can bake cookies or roast poultry in a convection microwave. You will definitely cut down your time in the kitchen so that you can spend more time with your family.
As you look at the different models and styles available in convection microwave ovens, you will see that they are as varied as any other type of appliance. You will find models with minimal features as well as models that have all the bells and whistles you could possibly want. It is a good idea to decide which features you really want for your convection microwave so that you don't pay the extra cost for those you will never use. You may find as you look at all of the new models that some of the new features that you never even considered may be especially useful to you and that may help make your decision on which convection microwave you wish to purchase.
Size is definitely something to think about when selecting a convection microwave. You need to know how much space you have available at home. You may wish to purchase an over the range convection microwave to replace an old microwave or perhaps to replace an old range hood fan. These models are very versatile. In addition to the amount of space the convection microwave will take up, you also want to think about the amount of space available inside of it. Think about the types of things you will be cooking in it. If you want to roast your Thanksgiving turkey in it, then you will need a convection microwave large enough to accommodate a turkey. If there are only a few family members still at home, you may want to opt for a smaller model convection microwave.
Once you have decided on the size and features of your convection microwave, you can determine the color. You will be able to find most models available in a number of colors. Basic black, bright white, and stainless steel are very popular colors for convection microwave ovens and most other appliances. You should be able to select a color that works with other appliances in your home.
About the Author
Kurt Zier writes about home improvement and do-it-yourself projects for The Home Depot. He focuses on purchase decision considerations, extended protection programs, repairs, and types of services available in the marketplace. He also offers insights into product and service features and benefits. convection microwave
Calculating heat lost in a steel pipe?
I have a heat transfer question. If an unexposed steel pipe (k=47) of diameter 10 inches, maintains an internal temperature of 460F and is exposed to ambient air (70F) flowing at 5 mph. Determine the heat loss per unit length. The inside diameter of the pipe is 9.224 inches and the O.D. is 10.75 inches. Emissivity can be taken as 0.8. σ = 5.6669 x 10^-8.
I know you need to find (q/L)rad and (q/L)convection but I'm having trouble figuring out h, the convection coefficient. can anyone help?
First, you need the Reynolds number:
Re=ρvD/μ
where ρ=density of the air,
v= velocity of the air
D=dia of the pipe
μ= viscosity of the air
Remember to convert units so that Re comes out dimensionless!
Now, calculate the Nusselt number.
If Re > 500,
Nu=0.46Re^.5 + .00128 Re
If Re < 500,
Nu = 0.43 + 0.48 Re^.5
In either case,
Nu = h D / k
where h = external heat transfer coefficient!!
k = thermal conductivity of air.
Again, use units that make the Nu come out dimensionless
Breadman TR2700 Stainless-Steel Programmable Convection Bread Maker Best Price