Crossflow fans typically dissipate heat better in ovens than conventional ovens because they provide more even heating and temperature control. Here are some of the advantages of crossflow fans in ovens over conventional ovens:

1. Even heating: Crossflow fans distribute hot air evenly throughout the oven through forced convection. This helps eliminate hot and cold spots that can exist in conventional ovens, resulting in more even heating. Food is heated more evenly in the oven, avoiding overcooked or undercooked areas.

2. Faster cooking times: Because crossflow fans effectively circulate hot air to the surface and interior of food, cooking times are typically reduced. Food absorbs heat more quickly to the desired degree of doneness, making cooking more efficient.

3. Baking and roasting quality: Crossflow fans produce better results in baking and roasting. Even heating and air circulation help the surface of food achieve a more even color, crispy appearance, and taste. Crossflow fans can also help achieve better puffing of foods such as bread and pastries.

4. Temperature Control: A crossflow fan helps to more accurately control the temperature in the oven. By circulating hot air, it can quickly adjust the temperature in the oven to the desired setting and keep it stable. This accuracy of temperature control makes the cooking process more reliable and can better control the degree of cooking of food.

It should be noted that the specific effect of a crossflow fan in an oven may be affected by factors such as the oven design and the quality of the crossflow fan. Therefore, choosing a high-quality oven and crossflow fan is the key to ensure the best cooling effect.