Yes, the size of the oven will have an impact on how well the crossflow fan will cool the oven. Here are some factors related to oven size that may affect how well the crossflow fan will cool the oven:

1. Air Circulation Path: The size of the oven will affect the air circulation path of the crossflow fan. In smaller ovens, the air circulation path is relatively short, and the crossflow fan can circulate the hot air more quickly throughout the oven. In larger ovens, the air circulation path is longer, and the crossflow fan may need more time to circulate the hot air. Therefore, larger ovens may require a higher-powered crossflow fan or longer cooking times to achieve even cooling.

2. Air Uniformity: The size of the oven will also have an impact on how uniform the air is throughout the oven. In smaller ovens, the relatively small space makes it easier for the crossflow fan to evenly distribute the hot air throughout the oven, resulting in more even cooling. However, in larger ovens, due to the larger space, additional design and layout may be required to ensure that the crossflow fan can evenly transfer the hot air to various areas to avoid hot and cold spots.

3. Heat dissipation: The size of the oven affects how quickly and efficiently heat is dissipated. Larger ovens typically have a larger surface area and can dissipate heat more quickly. The crossflow fan in this case requires a higher power to circulate and dissipate the hot air to ensure that the heat is evenly distributed throughout the oven and to avoid overheating inside the oven.

Therefore, the size of the oven will affect the heat dissipation effect of the crossflow fan. Larger ovens may require a higher power crossflow fan or additional design to achieve uniform heat dissipation. When selecting an oven, the size of the oven should be considered to match the crossflow fan to ensure the best cooking and heat dissipation effect.