The thermal energy storage technology can convert solar energy into heat energy and store it for drying at night, which can effectively reduce energy consumption and improve drying efficiency.
What are the advantages of integrated stoves compared to traditional cookers? First, the suction rate of the range hood is different: the suction rate of the traditional range hood is 40-60%. The soot absorption rate of the integrated environmental protection stove is over 99%.
When thermal energy storage (TES) is integrated into the solar drying system, the efficiency increases significantly to 50.99 %, representing an improvement of approximately 14.14 % over the standalone solar dryer.
For example, the existing integrated stove with drying function is generally integrated with a stove, a steam oven and a drying cabinet, and each of the three has an independent heat source, which not only causes a waste of energy, but also makes the integrated stove work.
The integrated stove combines various functions such as range hood, stove, disinfection cabinet and storage cabinet. It has the characteristics of high smoke absorption rate, energy saving and environmental protection, ultra-quiet and intuitive display, which saves space, cost and manpower operation procedures.
Numerous studies have shown that solar cooking and drying can be an effective means of food preservation as the product is completely protected from rain, dust, insects and animals. However, some obstacles still need to be overcome for solar cooking and drying to become a more widespread technology.
The system''s exergy and energy efficiencies were reduced due to pressure drop, but the packed bed storage unit provided sufficient energy to dry the orange slices.
In summary, the energy efficiency of integrated stoves compared to traditional ranges or cooktops with separate ovens depends on various factors. It''s essential to consider the specific features, technology, and usage patterns of the appliance in question.
The research and application of the intelligent motor technology in the integrated stove effectively solves the user''s pain points in the cooking process and improves the life satisfaction of the smart kitchen.
Modern smart stoves use phase-change materials (think high-tech wax) and lithium-ion batteries to store energy during off-peak hours. One New York bakery reported 40% energy savings using this system – enough to power 20 stand mixers simultaneously [1].
The integration of sensible and latent heat energy storage units with solar dryers will help in achieving the continuous drying of various agricultural and food products. The TES units control the air temperature fluctuations inside the drying chamber and also prevent the products from getting overheated.
It was found that the dryer's thermal efficiency was improved with incorporating the heat storage unit, and the thermal efficiency with and without heat storage was 18.6% and 10.8%, respectively. They also calculated the PBP of the dryer, which was 1.9 years. Ndukwu et al. (2020a) investigated a MMT solar dryer with a glycerol-based TES unit.
Solar dryers integrated with sensible heat storage units. The solar dryer integrated with the SHS units is less expensive and can be constructed quickly without any pre-fabricated storage medium and heat exchanger.
A similar capacity of sensible (pebble) and latent (paraffin) heat storage materials were tested in the dryer unit. It was observed that the maximum energy stored in the sensible unit (52.5 MJ) was higher than in the latent unit (49.5 MJ), and the drying time of lemon slices in both the dryers with the storage unit was similar (6.2 h).
The proposed solar dryer saved 10–22 h of drying time. The total energy consumed by the dryer varied between 5 and 35 MJ. The exergy efficiency was varied between 5.6 and 95%. Tekasakul et al. (2017) tested an IDT solar dryer integrated with the furnace and brick stack unit to dry rubber sheets.
It was observed that the proposed dryer with a packed storage unit and waste heat recovery system (recuperator unit) consumed lower energy (76%) than other drying methods. Further, 50–60% of the waste heat was reutilized in the drying unit. Vijayan et al. (2016) investigated an IDT solar dryer integrated with SAH to dry bitter gourds.
