Keeping a grocery store at a low temperature during summer may lead to less energy consumption for refrigerators and freezers but could increase overall energy needed for air conditioning. This claim requires further investigation.
The student's question does not provide a factual scenario but rather seems to be a discussion point. Regarding energy consumption in grocery stores, one can argue that during summer, keeping a low temperature could potentially lead to less total energy consumption due to the refrigerators and freezers operating more efficiently in cooler ambient conditions.
Cooler indoor temperatures might reduce the differential between the inside of the refrigeration units and the store environment, possibly leading to a more efficient cooling process and less energy used to maintain low temperatures inside the units.
However, the energy saved on refrigeration might be offset by the increased energy required to cool the store's air. Without specific data, it's difficult to conclusively say if total energy consumption is less. Therefore, this claim would need further investigation, considering both cooling efficiency gains in refrigeration units and the additional energy costs of air conditioning during hot weather.