Surface combustion burners or radiant tile burners in comparison produce nitrogen oxides' levels 60-70% less. Therefore John Joyce's research into low NO x burners revolved primarily around surface combustion techniques. Another issue was the effect combustion temperatures have on the formation of NO x.
soup sandwich. A slang term used by members of the United States Army to describe a fellow soldier whose performance is unsatisfactory. This term is often shortened to just soup.. The term expresses a state of extreme uselessness, which can be understood by considering the functionality and worth of soup between two slices of bread.
01/2014. Soup & Sandwiches. The Healthy Lunch Duo. Soup and a sandwich has been a lunch-time favorite for years. What's more. filling and simple to prepare? Here are ways to make your soup and. sandwich meal a healthy option. Bread: ï· Choose bread high in fiber to help lower cholesterol. ï· Look for the words whole or bran first on. ingredient list. ï· Whole grain breads such as whole wheat and rye are great sources of. soluble fiber.