Innovation and Entrepreneurship

3-12

Authors: Georgi V. Petrov and Zdravka Dzhandarmova

The problem is of particular importance not only in branch and national context, but also in the global world. Applies to the following main subproblems, related the economy, ecology and human life. This problem has a wide scope of research and design work. In agriculture, industry institutes and some universities have specialists who could work in this direction, but we need the Ministry of Agriculture and Agrarian Reform /Ministry of Agriculture/, National Energy Efficiency Agency /NAEE/, Cabinet, large tenant farms, professional associations and organizations and foundations to raise funds to finance projects for research, development and implementation in seven main areas

21-31

Authors: Ivan Lazarov

Heat exchange between bodies as complex physical process, depending on numerous conditions, is divided into three main types: thermal conductivity (conduction) heat transfer (convection) and radiant heat transfer (radiation).

40-52

Authors: Petar Kazakov, Nikolay Kolev, Eftim Vajarov

Ensuring the normal operation of the elements of thermal systems (TC) for a long required to be subject to periodic control and verification of their technical condition. Often this is accompanied by a change of the operation mode and putting into the structure of the system of the new, modern working devices, and introducing a system of spare devices. The report proposed a strategy for "hot" reserving of the elements on thermal systems in their maintenance and repair.