Heat transfer always occurs from a region of high temperature to another region of lower temperature. Heat transfer changes the internal energy of both systems involved according to the First Law of Thermodynamics.
Cyperus esculentus (also called chufa sedge, nut grass, yellow nutsedge, tiger nut sedge, or earth almond) is a crop of the sedge family widespread across much of the world.It is native to most of the Western Hemisphere as well as southern Europe, Africa, Madagascar, the Middle East and the Indian Subcontinent.n Spain, C. esculentus is cultivated for its edible tubers, called earth almonds or tiger nuts, for the preparation of  horchata de chufa, a sweet, milk-like beverage. However, in most other countries, C. esculentus is considered a weed.
Macadamia nuts come from the fruit of a large evergreen tree native to eastern Australia.Thousands of years before European settlement, the aborigines of Australia gathered the native nuts from rainforest floors and consumed them as snacks.It wasn't until the early 1880s that the macadamia nut was first introduced to Hawaii, which today is one of the world's leading producers of macadamia nuts.acadamia nuts are ready for harvest when the fruits of the macadamia tree begin to fall to the ground. Large-scale commercial facilities will use mechanical sweepers to collect the nuts from the orchard floor.