# Heat Flux of BBQ Grill: Estimating Temp. & Length of Handle

• engineer23
In summary, to find the heat flux of a barbeque grill, you'll need to know the specific heat capacity of the meat, the area and mass of the meat, and the temperature difference and time it takes to cook the meat. By using these values, you can estimate the heat flux of your grill, which is important for determining the appropriate length of a grilling utensil handle to keep the part you touch at a reasonable temperature.
engineer23
Does anyone have any idea what the heat flux of a barbeque grill might be? I'm estimating the temp. of the meat at 370 K, which is a little larger than that required to grill burgers to well-done. Just need a ballpark figure for the flux...I am trying to make my own grilling utensil and want to find the length the handle needs to be to keep the part you touch at a reasonable temperature.

To find the heat flux of your grill, you'll need to know several things.

1. The specific heat capacity of your meat (pick something like a hamburger or steak). There are some scientific web sites out there with ball park estimates of the heat capacity of certain meats. They do this for the food industry.

2. You'll need to know the area of the side of the meat (the side that will be touching the grill) and the mass of the meat (in grams not pounds) before and after cooking.

3. Measure the temperature of the meat before you put it onto the grill.

4. Time to see how long it takes to get to the meat to a certain temperature and find the mass of the meat then. It may also be good to measure the area of the meat again.

Take the specific heat capacity of the meat and multiply it by the mass of the meat (do two separate calculations, one with the BEFORE mass, the other with the AFTER mass). After that, multiply it by the temperature difference that the meat underwent. Divide this by the time that it took. Divide it again by the area of the meat (again use the BEFORE area for the BEFORE calculation and the AFTER area for the AFTER calculation).

The two values that you get will be a ballpark range of what your grill's heat flux is.

## 1. What is heat flux?

Heat flux is the rate of heat transfer per unit area. It is a measure of how much heat energy is being transferred through a specific area in a specific amount of time.

## 2. Why is it important to estimate the temperature and length of a BBQ grill handle?

Estimating the temperature and length of a BBQ grill handle is important to ensure the safety of the person using the grill. If the handle is too hot, it can cause burns or injuries, and if it is too short, it may increase the risk of getting burned by the heat radiating from the grill.

## 3. How can heat flux be measured on a BBQ grill?

Heat flux can be measured on a BBQ grill by using a heat flux sensor, which is a small device that can be attached to the surface of the grill. The sensor will measure the amount of heat being transferred through the surface and display it on a digital screen.

## 4. What factors affect the heat flux of a BBQ grill?

The heat flux of a BBQ grill can be affected by several factors such as the type of fuel being used, the distance between the heat source and the grill surface, and the material and thickness of the grill. Wind and ventilation can also affect the heat flux as they can increase or decrease the rate of heat transfer.

## 5. How can the heat flux of a BBQ grill be controlled?

The heat flux of a BBQ grill can be controlled by adjusting the distance between the heat source and the grill surface, using a heat diffuser or heat shield to distribute the heat more evenly, and using different cooking methods such as indirect grilling. It is also important to regularly clean and maintain the grill to ensure efficient heat transfer.

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