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.
Brazil nuts. Brazil nuts arenât nuts. Like horse chestnuts, they are seeds contained in a capsule or pod, which splits apart. True nuts donât split â the seed and the fruit are one and the same.Brazil nuts mostly come from Bolivia (in Brazil, they are called castanhas, or chestnuts).They grow at the very top of enormously tall trees, in round wooden capsules packed with between eight and two dozen seeds.rue nuts donât split â the seed and the fruit are one and the same. Brazil nuts mostly come from Bolivia (in Brazil, they are called castanhas, or chestnuts). They grow at the very top of enormously tall trees, in round wooden capsules packed with between eight and two dozen seeds.