No, an old fridge without a compressor cannot be effectively used as a deep freezer. The cooling mechanism in a refrigerator is different from that in a freezer.
Refrigerators typically use a compressor-based cooling system, which relies on a refrigerant and a compressor to cool the air inside. The compressor circulates the refrigerant, creating a temperature differential that cools the refrigerator compartment. The refrigerator compartment is designed to maintain temperatures above freezing, typically around 35-40 degrees Fahrenheit (1-4 degrees Celsius).
On the other hand, freezers, including deep freezers, require a different cooling mechanism to maintain much lower temperatures below freezing, typically around 0 degrees Fahrenheit (-18 degrees Celsius) or lower. Freezers use either a separate cooling system or an extended refrigeration system to achieve and maintain these lower temperatures.
Since an old fridge without a compressor lacks the necessary cooling mechanism and design for deep freezing, it will not be able to maintain the extremely low temperatures required for long-term frozen storage. It may not adequately freeze items or maintain their frozen state, leading to potential spoilage or degradation of food items.
If you require a deep freezer, it is recommended to use a dedicated freezer designed specifically for that purpose. These appliances are designed to reach and maintain the required low temperatures and provide suitable storage conditions for frozen items.