The study aimed to assess the comprehensiveness and content quality of the YouTube videos providing information on the symptoms and preventive measures for Omicron. A comprehensive electronic search was conducted on YouTube, resulting in a total of 120 videos being selected for the study based on view count and relevance. The videos were evaluated for their content quality by assessing their adherence with the World Health Organization (WHO) and the Center for Disease Control (CDC) approved guidelines. The scores indicate that only 23.3% of videos included all 5 symptoms and 3.1% of videos included all the 6 preventive measures recommended by WHO and CDC. News channels gave out information that was not approved by government healthcare organizations. Individual content creators adhered to the information approved by the certified organizations with 34% of their videos containing information on all the 5 symptoms and 6 prevention guidelines approved by WHO and CDC.

A heat exchanger is a piece of equipment designed to transfer heat from one medium to another efficiently. It relies on the conduction, convection, and radiation principles with fluids flowing against one another. There are many other forms of heat exchange, but we choose the double pipe heat exchanger since it has two pipes (outer pipe with cold fluid and inner pipe with hot fluid). The goal is to maximize the rate of heat transfer while monitoring the mass flow rates of the two fluids. In order to achieve this, we placed washers between the outer and inner pipes at a certain distance, which would lower the speed of the cold fluid and increase the efficiency of the heat transfer rate. They are extensively utilized in power plants, chemical and petrochemical facilities, oil refineries, sewage treatment facilities, air conditioning, refrigeration, and space heating systems. A heat exchanger is most commonly seen in internal combustion engines, where engine coolant circulates through radiator coils as air passes by, cooling the coolant and heating the incoming air.